./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 16:36:05,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:36:05,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:36:05,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:36:05,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:36:05,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:36:05,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:36:05,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:36:05,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:36:05,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:36:05,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:36:05,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:36:05,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:36:05,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:36:05,806 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:36:05,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:36:05,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:36:05,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:36:05,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:36:05,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:36:05,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:36:05,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:36:05,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:36:05,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:36:05,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:36:05,814 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:36:05,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:36:05,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:36:05,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:36:05,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:36:05,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:36:05,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:36:05,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:36:05,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:36:05,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:36:05,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:36:05,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:36:05,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:36:05,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:36:05,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:36:05,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:36:05,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:36:05,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:36:05,818 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:36:05,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:36:06,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:36:06,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:36:06,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:36:06,014 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:36:06,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-20 16:36:07,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:36:07,247 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:36:07,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-20 16:36:07,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/917be3836/d6c3a77ed14042ff8d5f204a9d7064fa/FLAGb4ce60966 [2024-06-20 16:36:07,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/917be3836/d6c3a77ed14042ff8d5f204a9d7064fa [2024-06-20 16:36:07,276 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:36:07,277 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:36:07,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-20 16:36:07,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:36:07,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:36:07,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:36:07,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:36:07,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:36:07,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:36:07" (1/2) ... [2024-06-20 16:36:07,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f05d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:36:07, skipping insertion in model container [2024-06-20 16:36:07,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:36:07" (1/2) ... [2024-06-20 16:36:07,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@285f51ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:36:07, skipping insertion in model container [2024-06-20 16:36:07,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:36:07" (2/2) ... [2024-06-20 16:36:07,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f05d8c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:07, skipping insertion in model container [2024-06-20 16:36:07,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:36:07" (2/2) ... [2024-06-20 16:36:07,434 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:36:07,528 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:36:07,545 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-20 16:36:07,545 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-20 16:36:07,545 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-20 16:36:07,545 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:36:07,545 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-20 16:36:07,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:36:07,940 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:36:07,948 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:36:08,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:36:08,066 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:36:08,067 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08 WrapperNode [2024-06-20 16:36:08,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:36:08,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:36:08,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:36:08,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:36:08,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,129 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 166 [2024-06-20 16:36:08,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:36:08,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:36:08,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:36:08,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:36:08,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,168 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 16:36:08,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:36:08,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:36:08,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:36:08,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:36:08,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (1/1) ... [2024-06-20 16:36:08,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:36:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:36:08,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 16:36:08,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 16:36:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:36:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:36:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:36:08,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:36:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:36:08,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:36:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 16:36:08,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 16:36:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:36:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:36:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:36:08,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:36:08,259 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:36:08,384 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:36:08,392 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:36:08,700 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:36:08,701 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:36:08,874 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:36:08,874 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:36:08,875 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:36:08 BoogieIcfgContainer [2024-06-20 16:36:08,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:36:08,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:36:08,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:36:08,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:36:08,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:36:07" (1/4) ... [2024-06-20 16:36:08,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51872aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:36:08, skipping insertion in model container [2024-06-20 16:36:08,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:36:07" (2/4) ... [2024-06-20 16:36:08,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51872aee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:36:08, skipping insertion in model container [2024-06-20 16:36:08,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:36:08" (3/4) ... [2024-06-20 16:36:08,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51872aee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:36:08, skipping insertion in model container [2024-06-20 16:36:08,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:36:08" (4/4) ... [2024-06-20 16:36:08,884 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-20 16:36:08,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:36:08,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-20 16:36:08,898 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:36:08,942 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:36:08,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-20 16:36:08,998 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-20 16:36:08,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:36:08,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:36:08,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-20 16:36:09,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-20 16:36:09,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:36:09,021 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;@3a2366ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:36:09,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-20 16:36:09,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:36:09,025 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:36:09,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:36:09,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:09,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:36:09,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 403727084, now seen corresponding path program 1 times [2024-06-20 16:36:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741525308] [2024-06-20 16:36:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:10,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741525308] [2024-06-20 16:36:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741525308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:10,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:36:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315676746] [2024-06-20 16:36:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:36:10,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:10,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:36:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:36:10,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-20 16:36:10,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:10,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:10,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-20 16:36:10,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:10,380 INFO L124 PetriNetUnfolderBase]: 1152/1770 cut-off events. [2024-06-20 16:36:10,380 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-20 16:36:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3587 conditions, 1770 events. 1152/1770 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8412 event pairs, 785 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 3575. Up to 1732 conditions per place. [2024-06-20 16:36:10,393 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-20 16:36:10,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 167 flow [2024-06-20 16:36:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:36:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:36:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-20 16:36:10,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-06-20 16:36:10,403 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 71 transitions. [2024-06-20 16:36:10,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 167 flow [2024-06-20 16:36:10,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:10,406 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-20 16:36:10,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-20 16:36:10,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-20 16:36:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-20 16:36:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:10,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:10,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:10,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:36:10,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:10,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1526065087, now seen corresponding path program 1 times [2024-06-20 16:36:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:10,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051683805] [2024-06-20 16:36:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:11,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051683805] [2024-06-20 16:36:11,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051683805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:11,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:36:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957847229] [2024-06-20 16:36:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:36:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:36:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:36:11,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-20 16:36:11,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:11,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:11,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-20 16:36:11,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:11,422 INFO L124 PetriNetUnfolderBase]: 1389/2124 cut-off events. [2024-06-20 16:36:11,422 INFO L125 PetriNetUnfolderBase]: For 400/405 co-relation queries the response was YES. [2024-06-20 16:36:11,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 2124 events. 1389/2124 cut-off events. For 400/405 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9968 event pairs, 621 based on Foata normal form. 10/2128 useless extension candidates. Maximal degree in co-relation 4846. Up to 2033 conditions per place. [2024-06-20 16:36:11,433 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 41 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-20 16:36:11,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 244 flow [2024-06-20 16:36:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:36:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:36:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-20 16:36:11,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-20 16:36:11,435 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-20 16:36:11,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 244 flow [2024-06-20 16:36:11,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:36:11,436 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2024-06-20 16:36:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-20 16:36:11,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-20 16:36:11,437 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2024-06-20 16:36:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:11,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:11,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:11,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:36:11,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:11,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash 160299932, now seen corresponding path program 1 times [2024-06-20 16:36:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383434525] [2024-06-20 16:36:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:11,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383434525] [2024-06-20 16:36:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383434525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:12,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:12,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:36:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565033484] [2024-06-20 16:36:12,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:36:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:36:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:36:12,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-20 16:36:12,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:12,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:12,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-20 16:36:12,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:12,974 INFO L124 PetriNetUnfolderBase]: 1380/2107 cut-off events. [2024-06-20 16:36:12,975 INFO L125 PetriNetUnfolderBase]: For 1135/1145 co-relation queries the response was YES. [2024-06-20 16:36:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 2107 events. 1380/2107 cut-off events. For 1135/1145 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9882 event pairs, 481 based on Foata normal form. 14/2113 useless extension candidates. Maximal degree in co-relation 5333. Up to 1988 conditions per place. [2024-06-20 16:36:12,986 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 45 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-20 16:36:12,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 300 flow [2024-06-20 16:36:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:36:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:36:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-20 16:36:12,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-06-20 16:36:12,991 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 5 states and 107 transitions. [2024-06-20 16:36:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 300 flow [2024-06-20 16:36:12,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 286 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-20 16:36:12,995 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 155 flow [2024-06-20 16:36:12,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-20 16:36:12,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-20 16:36:12,996 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 155 flow [2024-06-20 16:36:12,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:12,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:12,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:12,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:36:12,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:12,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1494515606, now seen corresponding path program 1 times [2024-06-20 16:36:12,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:12,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740942949] [2024-06-20 16:36:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:13,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740942949] [2024-06-20 16:36:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740942949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:13,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:13,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:36:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668776386] [2024-06-20 16:36:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:36:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:36:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:36:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-20 16:36:13,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:13,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-20 16:36:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:14,043 INFO L124 PetriNetUnfolderBase]: 1126/1734 cut-off events. [2024-06-20 16:36:14,043 INFO L125 PetriNetUnfolderBase]: For 1698/1698 co-relation queries the response was YES. [2024-06-20 16:36:14,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 1734 events. 1126/1734 cut-off events. For 1698/1698 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8160 event pairs, 594 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 4755. Up to 1683 conditions per place. [2024-06-20 16:36:14,052 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-06-20 16:36:14,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 291 flow [2024-06-20 16:36:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:36:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:36:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-20 16:36:14,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2024-06-20 16:36:14,054 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 155 flow. Second operand 5 states and 89 transitions. [2024-06-20 16:36:14,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 291 flow [2024-06-20 16:36:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 268 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:14,058 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 176 flow [2024-06-20 16:36:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-20 16:36:14,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-20 16:36:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 176 flow [2024-06-20 16:36:14,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:14,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:14,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:14,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:36:14,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:14,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash -906612192, now seen corresponding path program 1 times [2024-06-20 16:36:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921750756] [2024-06-20 16:36:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:14,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:14,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921750756] [2024-06-20 16:36:14,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921750756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:14,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:14,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:36:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611042430] [2024-06-20 16:36:14,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:14,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:36:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:14,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:36:14,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:36:14,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-20 16:36:14,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:14,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:14,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-20 16:36:14,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:15,313 INFO L124 PetriNetUnfolderBase]: 1116/1716 cut-off events. [2024-06-20 16:36:15,313 INFO L125 PetriNetUnfolderBase]: For 2633/2633 co-relation queries the response was YES. [2024-06-20 16:36:15,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 1716 events. 1116/1716 cut-off events. For 2633/2633 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8104 event pairs, 564 based on Foata normal form. 4/1718 useless extension candidates. Maximal degree in co-relation 5087. Up to 1651 conditions per place. [2024-06-20 16:36:15,323 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 44 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-06-20 16:36:15,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 344 flow [2024-06-20 16:36:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-20 16:36:15,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-20 16:36:15,325 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 176 flow. Second operand 6 states and 106 transitions. [2024-06-20 16:36:15,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 344 flow [2024-06-20 16:36:15,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 324 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:15,330 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 210 flow [2024-06-20 16:36:15,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-20 16:36:15,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-20 16:36:15,333 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 210 flow [2024-06-20 16:36:15,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:15,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:15,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:36:15,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:15,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1306634323, now seen corresponding path program 1 times [2024-06-20 16:36:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649775164] [2024-06-20 16:36:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:15,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649775164] [2024-06-20 16:36:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649775164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:36:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897095495] [2024-06-20 16:36:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:36:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:36:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:36:16,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:16,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:16,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:16,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:16,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:16,468 INFO L124 PetriNetUnfolderBase]: 1372/2099 cut-off events. [2024-06-20 16:36:16,469 INFO L125 PetriNetUnfolderBase]: For 4260/4274 co-relation queries the response was YES. [2024-06-20 16:36:16,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 2099 events. 1372/2099 cut-off events. For 4260/4274 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9883 event pairs, 514 based on Foata normal form. 16/2112 useless extension candidates. Maximal degree in co-relation 6631. Up to 1990 conditions per place. [2024-06-20 16:36:16,481 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-20 16:36:16,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 422 flow [2024-06-20 16:36:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-20 16:36:16,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-20 16:36:16,482 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 210 flow. Second operand 6 states and 106 transitions. [2024-06-20 16:36:16,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 422 flow [2024-06-20 16:36:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 392 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:16,487 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 258 flow [2024-06-20 16:36:16,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-20 16:36:16,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-20 16:36:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 258 flow [2024-06-20 16:36:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:16,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:36:16,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 261661045, now seen corresponding path program 2 times [2024-06-20 16:36:16,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104209915] [2024-06-20 16:36:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:16,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104209915] [2024-06-20 16:36:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104209915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:17,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:36:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234089380] [2024-06-20 16:36:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:36:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:36:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:36:17,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:17,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:17,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:17,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:17,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:17,619 INFO L124 PetriNetUnfolderBase]: 1378/2112 cut-off events. [2024-06-20 16:36:17,619 INFO L125 PetriNetUnfolderBase]: For 6010/6017 co-relation queries the response was YES. [2024-06-20 16:36:17,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7261 conditions, 2112 events. 1378/2112 cut-off events. For 6010/6017 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9965 event pairs, 503 based on Foata normal form. 8/2117 useless extension candidates. Maximal degree in co-relation 7240. Up to 1947 conditions per place. [2024-06-20 16:36:17,632 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 52 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-20 16:36:17,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 534 flow [2024-06-20 16:36:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-20 16:36:17,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-20 16:36:17,634 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 258 flow. Second operand 6 states and 109 transitions. [2024-06-20 16:36:17,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 534 flow [2024-06-20 16:36:17,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 508 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-20 16:36:17,639 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 340 flow [2024-06-20 16:36:17,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-20 16:36:17,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-20 16:36:17,640 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 340 flow [2024-06-20 16:36:17,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:17,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:17,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:17,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:36:17,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:17,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1297703964, now seen corresponding path program 1 times [2024-06-20 16:36:17,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:17,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658579806] [2024-06-20 16:36:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658579806] [2024-06-20 16:36:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658579806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:36:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820348848] [2024-06-20 16:36:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:18,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:36:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:36:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:36:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:18,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:18,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:18,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:18,740 INFO L124 PetriNetUnfolderBase]: 1613/2417 cut-off events. [2024-06-20 16:36:18,740 INFO L125 PetriNetUnfolderBase]: For 8648/8648 co-relation queries the response was YES. [2024-06-20 16:36:18,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 2417 events. 1613/2417 cut-off events. For 8648/8648 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10941 event pairs, 607 based on Foata normal form. 2/2418 useless extension candidates. Maximal degree in co-relation 8795. Up to 2399 conditions per place. [2024-06-20 16:36:18,757 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 60 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-06-20 16:36:18,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 528 flow [2024-06-20 16:36:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:36:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:36:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-20 16:36:18,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-20 16:36:18,761 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 340 flow. Second operand 5 states and 78 transitions. [2024-06-20 16:36:18,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 528 flow [2024-06-20 16:36:18,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 496 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-20 16:36:18,777 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 374 flow [2024-06-20 16:36:18,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-20 16:36:18,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-20 16:36:18,779 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 374 flow [2024-06-20 16:36:18,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:18,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:18,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:18,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:36:18,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:18,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:18,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1850868692, now seen corresponding path program 1 times [2024-06-20 16:36:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:18,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927103258] [2024-06-20 16:36:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:18,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927103258] [2024-06-20 16:36:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927103258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155702998] [2024-06-20 16:36:19,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:19,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:19,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 374 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:19,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:19,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:19,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:20,171 INFO L124 PetriNetUnfolderBase]: 1367/2091 cut-off events. [2024-06-20 16:36:20,172 INFO L125 PetriNetUnfolderBase]: For 8412/8425 co-relation queries the response was YES. [2024-06-20 16:36:20,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 2091 events. 1367/2091 cut-off events. For 8412/8425 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9850 event pairs, 490 based on Foata normal form. 12/2101 useless extension candidates. Maximal degree in co-relation 8070. Up to 1975 conditions per place. [2024-06-20 16:36:20,182 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 59 selfloop transitions, 18 changer transitions 0/81 dead transitions. [2024-06-20 16:36:20,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 578 flow [2024-06-20 16:36:20,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-20 16:36:20,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-20 16:36:20,184 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 374 flow. Second operand 6 states and 106 transitions. [2024-06-20 16:36:20,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 578 flow [2024-06-20 16:36:20,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 560 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-20 16:36:20,191 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 404 flow [2024-06-20 16:36:20,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-20 16:36:20,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-20 16:36:20,193 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 404 flow [2024-06-20 16:36:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:20,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:20,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:36:20,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -482160559, now seen corresponding path program 1 times [2024-06-20 16:36:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989327619] [2024-06-20 16:36:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:21,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989327619] [2024-06-20 16:36:21,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989327619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:21,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:21,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783076131] [2024-06-20 16:36:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:21,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:21,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:21,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:21,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:21,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:21,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:21,719 INFO L124 PetriNetUnfolderBase]: 1389/2130 cut-off events. [2024-06-20 16:36:21,719 INFO L125 PetriNetUnfolderBase]: For 10317/10334 co-relation queries the response was YES. [2024-06-20 16:36:21,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 2130 events. 1389/2130 cut-off events. For 10317/10334 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10120 event pairs, 485 based on Foata normal form. 18/2145 useless extension candidates. Maximal degree in co-relation 8460. Up to 1993 conditions per place. [2024-06-20 16:36:21,730 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 66 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-20 16:36:21,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 664 flow [2024-06-20 16:36:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-20 16:36:21,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-20 16:36:21,732 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 404 flow. Second operand 7 states and 122 transitions. [2024-06-20 16:36:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 664 flow [2024-06-20 16:36:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 619 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:21,742 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 437 flow [2024-06-20 16:36:21,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=437, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-20 16:36:21,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-20 16:36:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 437 flow [2024-06-20 16:36:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:21,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:36:21,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -478435909, now seen corresponding path program 2 times [2024-06-20 16:36:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084445556] [2024-06-20 16:36:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084445556] [2024-06-20 16:36:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084445556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:22,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528868286] [2024-06-20 16:36:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:22,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:22,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 437 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:22,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:22,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:23,262 INFO L124 PetriNetUnfolderBase]: 1465/2243 cut-off events. [2024-06-20 16:36:23,263 INFO L125 PetriNetUnfolderBase]: For 13140/13153 co-relation queries the response was YES. [2024-06-20 16:36:23,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9473 conditions, 2243 events. 1465/2243 cut-off events. For 13140/13153 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10710 event pairs, 456 based on Foata normal form. 18/2259 useless extension candidates. Maximal degree in co-relation 9443. Up to 2040 conditions per place. [2024-06-20 16:36:23,273 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 74 selfloop transitions, 20 changer transitions 0/98 dead transitions. [2024-06-20 16:36:23,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 803 flow [2024-06-20 16:36:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-20 16:36:23,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-20 16:36:23,275 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 437 flow. Second operand 7 states and 125 transitions. [2024-06-20 16:36:23,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 803 flow [2024-06-20 16:36:23,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 98 transitions, 749 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:23,283 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 508 flow [2024-06-20 16:36:23,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-20 16:36:23,284 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-20 16:36:23,284 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 508 flow [2024-06-20 16:36:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:23,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:23,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:36:23,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:23,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash -478441489, now seen corresponding path program 3 times [2024-06-20 16:36:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008637105] [2024-06-20 16:36:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008637105] [2024-06-20 16:36:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008637105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305937968] [2024-06-20 16:36:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:24,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:24,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:24,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:24,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:24,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:24,822 INFO L124 PetriNetUnfolderBase]: 1493/2292 cut-off events. [2024-06-20 16:36:24,822 INFO L125 PetriNetUnfolderBase]: For 16642/16649 co-relation queries the response was YES. [2024-06-20 16:36:24,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10288 conditions, 2292 events. 1493/2292 cut-off events. For 16642/16649 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10991 event pairs, 429 based on Foata normal form. 12/2301 useless extension candidates. Maximal degree in co-relation 10257. Up to 1890 conditions per place. [2024-06-20 16:36:24,834 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 63 selfloop transitions, 38 changer transitions 0/105 dead transitions. [2024-06-20 16:36:24,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 908 flow [2024-06-20 16:36:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-20 16:36:24,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-20 16:36:24,836 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 508 flow. Second operand 7 states and 130 transitions. [2024-06-20 16:36:24,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 908 flow [2024-06-20 16:36:24,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 863 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:24,846 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 629 flow [2024-06-20 16:36:24,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-20 16:36:24,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-20 16:36:24,847 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 629 flow [2024-06-20 16:36:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:24,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:24,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:36:24,848 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:24,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1236545068, now seen corresponding path program 1 times [2024-06-20 16:36:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046492162] [2024-06-20 16:36:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046492162] [2024-06-20 16:36:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046492162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:36:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816441918] [2024-06-20 16:36:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:36:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:36:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:36:26,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:26,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:26,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:26,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:26,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:26,784 INFO L124 PetriNetUnfolderBase]: 1658/2525 cut-off events. [2024-06-20 16:36:26,785 INFO L125 PetriNetUnfolderBase]: For 22056/22056 co-relation queries the response was YES. [2024-06-20 16:36:26,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11899 conditions, 2525 events. 1658/2525 cut-off events. For 22056/22056 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11658 event pairs, 514 based on Foata normal form. 8/2530 useless extension candidates. Maximal degree in co-relation 11866. Up to 2395 conditions per place. [2024-06-20 16:36:26,802 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 87 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2024-06-20 16:36:26,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 987 flow [2024-06-20 16:36:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:36:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:36:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-20 16:36:26,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 16:36:26,804 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 629 flow. Second operand 9 states and 145 transitions. [2024-06-20 16:36:26,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 987 flow [2024-06-20 16:36:26,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 928 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:26,821 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 707 flow [2024-06-20 16:36:26,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=707, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2024-06-20 16:36:26,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-20 16:36:26,822 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 707 flow [2024-06-20 16:36:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:26,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:26,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:26,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:36:26,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:26,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2064936622, now seen corresponding path program 1 times [2024-06-20 16:36:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408928877] [2024-06-20 16:36:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:27,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:27,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408928877] [2024-06-20 16:36:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408928877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:27,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:27,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:36:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591581013] [2024-06-20 16:36:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:27,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:36:27,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:36:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:36:27,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:27,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 707 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:27,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:27,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:27,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:28,355 INFO L124 PetriNetUnfolderBase]: 1662/2542 cut-off events. [2024-06-20 16:36:28,355 INFO L125 PetriNetUnfolderBase]: For 22966/22979 co-relation queries the response was YES. [2024-06-20 16:36:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12172 conditions, 2542 events. 1662/2542 cut-off events. For 22966/22979 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12264 event pairs, 356 based on Foata normal form. 14/2554 useless extension candidates. Maximal degree in co-relation 12135. Up to 2376 conditions per place. [2024-06-20 16:36:28,369 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 91 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-06-20 16:36:28,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 1011 flow [2024-06-20 16:36:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-20 16:36:28,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-20 16:36:28,371 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 707 flow. Second operand 7 states and 120 transitions. [2024-06-20 16:36:28,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 1011 flow [2024-06-20 16:36:28,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 948 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:28,391 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 717 flow [2024-06-20 16:36:28,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-06-20 16:36:28,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-20 16:36:28,391 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 717 flow [2024-06-20 16:36:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:28,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:28,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:28,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:36:28,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:28,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1483531136, now seen corresponding path program 1 times [2024-06-20 16:36:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058182972] [2024-06-20 16:36:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:29,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:29,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058182972] [2024-06-20 16:36:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058182972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:29,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:29,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:36:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361046932] [2024-06-20 16:36:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:36:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:36:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:36:29,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:29,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 717 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:29,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:29,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:30,055 INFO L124 PetriNetUnfolderBase]: 1657/2535 cut-off events. [2024-06-20 16:36:30,056 INFO L125 PetriNetUnfolderBase]: For 25729/25742 co-relation queries the response was YES. [2024-06-20 16:36:30,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 2535 events. 1657/2535 cut-off events. For 25729/25742 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12268 event pairs, 456 based on Foata normal form. 12/2545 useless extension candidates. Maximal degree in co-relation 12276. Up to 2363 conditions per place. [2024-06-20 16:36:30,070 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 86 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-20 16:36:30,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1045 flow [2024-06-20 16:36:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-20 16:36:30,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-20 16:36:30,072 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 717 flow. Second operand 7 states and 122 transitions. [2024-06-20 16:36:30,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1045 flow [2024-06-20 16:36:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 990 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:30,094 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 772 flow [2024-06-20 16:36:30,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=772, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-20 16:36:30,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-20 16:36:30,095 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 772 flow [2024-06-20 16:36:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:30,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:30,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:30,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:36:30,096 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:30,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1483531012, now seen corresponding path program 2 times [2024-06-20 16:36:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777873730] [2024-06-20 16:36:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777873730] [2024-06-20 16:36:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777873730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:36:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774573138] [2024-06-20 16:36:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:36:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:36:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:36:31,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:31,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 772 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:31,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:31,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:31,647 INFO L124 PetriNetUnfolderBase]: 1674/2562 cut-off events. [2024-06-20 16:36:31,648 INFO L125 PetriNetUnfolderBase]: For 29344/29357 co-relation queries the response was YES. [2024-06-20 16:36:31,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12821 conditions, 2562 events. 1674/2562 cut-off events. For 29344/29357 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12392 event pairs, 456 based on Foata normal form. 14/2574 useless extension candidates. Maximal degree in co-relation 12782. Up to 2399 conditions per place. [2024-06-20 16:36:31,663 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 92 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2024-06-20 16:36:31,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 117 transitions, 1092 flow [2024-06-20 16:36:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-20 16:36:31,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-20 16:36:31,665 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 772 flow. Second operand 7 states and 121 transitions. [2024-06-20 16:36:31,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 117 transitions, 1092 flow [2024-06-20 16:36:31,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 1024 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:31,694 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 790 flow [2024-06-20 16:36:31,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-06-20 16:36:31,695 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-20 16:36:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 790 flow [2024-06-20 16:36:31,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:31,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:31,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:31,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:36:31,696 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:31,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1946788492, now seen corresponding path program 3 times [2024-06-20 16:36:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802511466] [2024-06-20 16:36:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802511466] [2024-06-20 16:36:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802511466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:36:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391163079] [2024-06-20 16:36:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:36:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:36:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:36:32,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:32,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:32,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:32,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:32,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:33,225 INFO L124 PetriNetUnfolderBase]: 1666/2553 cut-off events. [2024-06-20 16:36:33,225 INFO L125 PetriNetUnfolderBase]: For 32739/32746 co-relation queries the response was YES. [2024-06-20 16:36:33,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12991 conditions, 2553 events. 1666/2553 cut-off events. For 32739/32746 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12337 event pairs, 458 based on Foata normal form. 8/2558 useless extension candidates. Maximal degree in co-relation 12951. Up to 2351 conditions per place. [2024-06-20 16:36:33,238 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 88 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-20 16:36:33,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 1116 flow [2024-06-20 16:36:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:36:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:36:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-20 16:36:33,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-20 16:36:33,250 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 790 flow. Second operand 7 states and 122 transitions. [2024-06-20 16:36:33,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 1116 flow [2024-06-20 16:36:33,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 118 transitions, 1050 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:33,276 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 823 flow [2024-06-20 16:36:33,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2024-06-20 16:36:33,276 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-20 16:36:33,276 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 823 flow [2024-06-20 16:36:33,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:33,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:33,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:36:33,277 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:33,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:33,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2133031907, now seen corresponding path program 1 times [2024-06-20 16:36:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446332063] [2024-06-20 16:36:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:33,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:33,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446332063] [2024-06-20 16:36:33,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446332063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:33,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:33,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:36:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663286758] [2024-06-20 16:36:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:33,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:36:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:36:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:36:34,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:34,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 823 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:34,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:34,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:34,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:34,526 INFO L124 PetriNetUnfolderBase]: 1794/2686 cut-off events. [2024-06-20 16:36:34,526 INFO L125 PetriNetUnfolderBase]: For 36407/36420 co-relation queries the response was YES. [2024-06-20 16:36:34,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13762 conditions, 2686 events. 1794/2686 cut-off events. For 36407/36420 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12320 event pairs, 508 based on Foata normal form. 12/2696 useless extension candidates. Maximal degree in co-relation 13721. Up to 2645 conditions per place. [2024-06-20 16:36:34,542 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 91 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2024-06-20 16:36:34,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 107 transitions, 1077 flow [2024-06-20 16:36:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:36:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:36:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-20 16:36:34,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:36:34,543 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 823 flow. Second operand 5 states and 80 transitions. [2024-06-20 16:36:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 107 transitions, 1077 flow [2024-06-20 16:36:34,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 107 transitions, 996 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-20 16:36:34,573 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 808 flow [2024-06-20 16:36:34,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-06-20 16:36:34,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-20 16:36:34,574 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 808 flow [2024-06-20 16:36:34,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:34,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:34,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:34,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:36:34,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:34,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1093730239, now seen corresponding path program 2 times [2024-06-20 16:36:34,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655227773] [2024-06-20 16:36:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:35,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655227773] [2024-06-20 16:36:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655227773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:35,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:35,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:36:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010336535] [2024-06-20 16:36:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:35,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:36:35,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:36:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:36:35,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:35,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 808 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:35,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:35,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:35,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:35,816 INFO L124 PetriNetUnfolderBase]: 1788/2678 cut-off events. [2024-06-20 16:36:35,817 INFO L125 PetriNetUnfolderBase]: For 38461/38474 co-relation queries the response was YES. [2024-06-20 16:36:35,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13996 conditions, 2678 events. 1788/2678 cut-off events. For 38461/38474 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12264 event pairs, 508 based on Foata normal form. 12/2688 useless extension candidates. Maximal degree in co-relation 13954. Up to 2629 conditions per place. [2024-06-20 16:36:35,831 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 93 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-06-20 16:36:35,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 1082 flow [2024-06-20 16:36:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-20 16:36:35,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:36:35,832 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 808 flow. Second operand 6 states and 92 transitions. [2024-06-20 16:36:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 1082 flow [2024-06-20 16:36:35,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 1040 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:35,857 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 840 flow [2024-06-20 16:36:35,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-06-20 16:36:35,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-20 16:36:35,857 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 840 flow [2024-06-20 16:36:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:35,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:35,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:36:35,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:35,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1546350907, now seen corresponding path program 1 times [2024-06-20 16:36:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931596070] [2024-06-20 16:36:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931596070] [2024-06-20 16:36:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931596070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:36,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:36,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:36:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194223629] [2024-06-20 16:36:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:36:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:36:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:36:36,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:36,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 840 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:36,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:36,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:36,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:37,017 INFO L124 PetriNetUnfolderBase]: 1806/2701 cut-off events. [2024-06-20 16:36:37,017 INFO L125 PetriNetUnfolderBase]: For 38237/38237 co-relation queries the response was YES. [2024-06-20 16:36:37,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14190 conditions, 2701 events. 1806/2701 cut-off events. For 38237/38237 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12317 event pairs, 501 based on Foata normal form. 2/2702 useless extension candidates. Maximal degree in co-relation 14147. Up to 2662 conditions per place. [2024-06-20 16:36:37,035 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 109 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-06-20 16:36:37,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 127 transitions, 1246 flow [2024-06-20 16:36:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-20 16:36:37,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:36:37,038 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 840 flow. Second operand 6 states and 96 transitions. [2024-06-20 16:36:37,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 127 transitions, 1246 flow [2024-06-20 16:36:37,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 127 transitions, 1195 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:37,075 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 940 flow [2024-06-20 16:36:37,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2024-06-20 16:36:37,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-20 16:36:37,076 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 940 flow [2024-06-20 16:36:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:37,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:36:37,077 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:37,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1825876899, now seen corresponding path program 2 times [2024-06-20 16:36:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251452791] [2024-06-20 16:36:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:37,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:37,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251452791] [2024-06-20 16:36:37,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251452791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:37,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:37,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:36:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066230916] [2024-06-20 16:36:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:36:37,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:36:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:36:37,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:37,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 940 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:37,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:37,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:37,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:38,175 INFO L124 PetriNetUnfolderBase]: 1800/2693 cut-off events. [2024-06-20 16:36:38,176 INFO L125 PetriNetUnfolderBase]: For 41673/41673 co-relation queries the response was YES. [2024-06-20 16:36:38,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14747 conditions, 2693 events. 1800/2693 cut-off events. For 41673/41673 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12293 event pairs, 499 based on Foata normal form. 2/2694 useless extension candidates. Maximal degree in co-relation 14701. Up to 2672 conditions per place. [2024-06-20 16:36:38,190 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 109 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-06-20 16:36:38,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 123 transitions, 1213 flow [2024-06-20 16:36:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-20 16:36:38,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-20 16:36:38,191 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 940 flow. Second operand 6 states and 89 transitions. [2024-06-20 16:36:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 123 transitions, 1213 flow [2024-06-20 16:36:38,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 1177 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-20 16:36:38,225 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 941 flow [2024-06-20 16:36:38,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=941, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2024-06-20 16:36:38,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-20 16:36:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 941 flow [2024-06-20 16:36:38,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:38,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:38,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:36:38,226 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1855361061, now seen corresponding path program 1 times [2024-06-20 16:36:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:38,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114075660] [2024-06-20 16:36:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:38,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114075660] [2024-06-20 16:36:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114075660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:36:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528832955] [2024-06-20 16:36:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:36:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:36:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:36:39,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:39,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 941 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:39,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:39,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:39,561 INFO L124 PetriNetUnfolderBase]: 1795/2686 cut-off events. [2024-06-20 16:36:39,562 INFO L125 PetriNetUnfolderBase]: For 45088/45088 co-relation queries the response was YES. [2024-06-20 16:36:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14848 conditions, 2686 events. 1795/2686 cut-off events. For 45088/45088 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12237 event pairs, 498 based on Foata normal form. 2/2687 useless extension candidates. Maximal degree in co-relation 14799. Up to 2662 conditions per place. [2024-06-20 16:36:39,576 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 110 selfloop transitions, 12 changer transitions 0/125 dead transitions. [2024-06-20 16:36:39,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 1227 flow [2024-06-20 16:36:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:36:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:36:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-20 16:36:39,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-20 16:36:39,577 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 941 flow. Second operand 6 states and 89 transitions. [2024-06-20 16:36:39,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 1227 flow [2024-06-20 16:36:39,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 125 transitions, 1203 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:39,608 INFO L231 Difference]: Finished difference. Result has 105 places, 115 transitions, 968 flow [2024-06-20 16:36:39,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=968, PETRI_PLACES=105, PETRI_TRANSITIONS=115} [2024-06-20 16:36:39,608 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-20 16:36:39,608 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 115 transitions, 968 flow [2024-06-20 16:36:39,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:39,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:39,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:36:39,609 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:39,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash 566497330, now seen corresponding path program 1 times [2024-06-20 16:36:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:39,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824523] [2024-06-20 16:36:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:40,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:40,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824523] [2024-06-20 16:36:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207871882] [2024-06-20 16:36:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:40,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:40,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 115 transitions, 968 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:41,287 INFO L124 PetriNetUnfolderBase]: 1694/2598 cut-off events. [2024-06-20 16:36:41,288 INFO L125 PetriNetUnfolderBase]: For 49403/49416 co-relation queries the response was YES. [2024-06-20 16:36:41,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14890 conditions, 2598 events. 1694/2598 cut-off events. For 49403/49416 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12493 event pairs, 332 based on Foata normal form. 14/2610 useless extension candidates. Maximal degree in co-relation 14841. Up to 2404 conditions per place. [2024-06-20 16:36:41,305 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 123 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-06-20 16:36:41,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 146 transitions, 1360 flow [2024-06-20 16:36:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-20 16:36:41,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-20 16:36:41,307 INFO L175 Difference]: Start difference. First operand has 105 places, 115 transitions, 968 flow. Second operand 8 states and 135 transitions. [2024-06-20 16:36:41,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 146 transitions, 1360 flow [2024-06-20 16:36:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 146 transitions, 1325 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:41,342 INFO L231 Difference]: Finished difference. Result has 109 places, 117 transitions, 1018 flow [2024-06-20 16:36:41,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1018, PETRI_PLACES=109, PETRI_TRANSITIONS=117} [2024-06-20 16:36:41,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-20 16:36:41,343 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 117 transitions, 1018 flow [2024-06-20 16:36:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:41,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:41,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:36:41,343 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:41,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 413348816, now seen corresponding path program 2 times [2024-06-20 16:36:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682394965] [2024-06-20 16:36:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:41,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682394965] [2024-06-20 16:36:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682394965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:42,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:42,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783008136] [2024-06-20 16:36:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:42,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:42,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:42,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 117 transitions, 1018 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:42,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:42,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:42,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:43,249 INFO L124 PetriNetUnfolderBase]: 1736/2669 cut-off events. [2024-06-20 16:36:43,249 INFO L125 PetriNetUnfolderBase]: For 55611/55624 co-relation queries the response was YES. [2024-06-20 16:36:43,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 2669 events. 1736/2669 cut-off events. For 55611/55624 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13013 event pairs, 421 based on Foata normal form. 14/2681 useless extension candidates. Maximal degree in co-relation 15743. Up to 2473 conditions per place. [2024-06-20 16:36:43,265 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 121 selfloop transitions, 22 changer transitions 0/148 dead transitions. [2024-06-20 16:36:43,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 148 transitions, 1420 flow [2024-06-20 16:36:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-20 16:36:43,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-20 16:36:43,266 INFO L175 Difference]: Start difference. First operand has 109 places, 117 transitions, 1018 flow. Second operand 8 states and 136 transitions. [2024-06-20 16:36:43,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 148 transitions, 1420 flow [2024-06-20 16:36:43,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 1353 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-20 16:36:43,320 INFO L231 Difference]: Finished difference. Result has 111 places, 119 transitions, 1048 flow [2024-06-20 16:36:43,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2024-06-20 16:36:43,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-20 16:36:43,320 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1048 flow [2024-06-20 16:36:43,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:43,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:36:43,321 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:43,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash 413352536, now seen corresponding path program 3 times [2024-06-20 16:36:43,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799041767] [2024-06-20 16:36:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:43,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799041767] [2024-06-20 16:36:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799041767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105754445] [2024-06-20 16:36:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:44,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:44,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:44,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1048 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:44,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:44,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:44,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:45,340 INFO L124 PetriNetUnfolderBase]: 1753/2696 cut-off events. [2024-06-20 16:36:45,340 INFO L125 PetriNetUnfolderBase]: For 61749/61762 co-relation queries the response was YES. [2024-06-20 16:36:45,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16318 conditions, 2696 events. 1753/2696 cut-off events. For 61749/61762 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13186 event pairs, 426 based on Foata normal form. 14/2708 useless extension candidates. Maximal degree in co-relation 16267. Up to 2491 conditions per place. [2024-06-20 16:36:45,357 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 119 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2024-06-20 16:36:45,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 150 transitions, 1460 flow [2024-06-20 16:36:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:36:45,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-20 16:36:45,358 INFO L175 Difference]: Start difference. First operand has 111 places, 119 transitions, 1048 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:36:45,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 150 transitions, 1460 flow [2024-06-20 16:36:45,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 150 transitions, 1381 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 16:36:45,411 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 1079 flow [2024-06-20 16:36:45,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1079, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2024-06-20 16:36:45,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-06-20 16:36:45,411 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 1079 flow [2024-06-20 16:36:45,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:45,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:45,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:36:45,412 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:45,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash 500194448, now seen corresponding path program 1 times [2024-06-20 16:36:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:45,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533787206] [2024-06-20 16:36:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:46,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533787206] [2024-06-20 16:36:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533787206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:46,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999481822] [2024-06-20 16:36:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:46,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:46,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:46,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:46,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 1079 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:46,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:46,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:47,126 INFO L124 PetriNetUnfolderBase]: 1903/2861 cut-off events. [2024-06-20 16:36:47,126 INFO L125 PetriNetUnfolderBase]: For 66533/66550 co-relation queries the response was YES. [2024-06-20 16:36:47,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16936 conditions, 2861 events. 1903/2861 cut-off events. For 66533/66550 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13356 event pairs, 477 based on Foata normal form. 18/2876 useless extension candidates. Maximal degree in co-relation 16884. Up to 2713 conditions per place. [2024-06-20 16:36:47,143 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 133 selfloop transitions, 25 changer transitions 0/161 dead transitions. [2024-06-20 16:36:47,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 161 transitions, 1560 flow [2024-06-20 16:36:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:36:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:36:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-20 16:36:47,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-20 16:36:47,144 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 1079 flow. Second operand 9 states and 146 transitions. [2024-06-20 16:36:47,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 161 transitions, 1560 flow [2024-06-20 16:36:47,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 161 transitions, 1467 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-20 16:36:47,197 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 1129 flow [2024-06-20 16:36:47,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1129, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2024-06-20 16:36:47,197 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-20 16:36:47,198 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 1129 flow [2024-06-20 16:36:47,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:47,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:47,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:47,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:36:47,198 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:47,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1699490225, now seen corresponding path program 1 times [2024-06-20 16:36:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239301963] [2024-06-20 16:36:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:47,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239301963] [2024-06-20 16:36:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239301963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:47,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:47,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:47,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679060703] [2024-06-20 16:36:47,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:47,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:47,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:47,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:47,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 127 transitions, 1129 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:47,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:47,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:47,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:48,698 INFO L124 PetriNetUnfolderBase]: 1955/2931 cut-off events. [2024-06-20 16:36:48,698 INFO L125 PetriNetUnfolderBase]: For 72506/72519 co-relation queries the response was YES. [2024-06-20 16:36:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17619 conditions, 2931 events. 1955/2931 cut-off events. For 72506/72519 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13703 event pairs, 491 based on Foata normal form. 14/2943 useless extension candidates. Maximal degree in co-relation 17565. Up to 2820 conditions per place. [2024-06-20 16:36:48,751 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 127 selfloop transitions, 26 changer transitions 0/156 dead transitions. [2024-06-20 16:36:48,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 1617 flow [2024-06-20 16:36:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-20 16:36:48,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 16:36:48,752 INFO L175 Difference]: Start difference. First operand has 117 places, 127 transitions, 1129 flow. Second operand 8 states and 125 transitions. [2024-06-20 16:36:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 1617 flow [2024-06-20 16:36:48,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 156 transitions, 1535 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 16:36:48,792 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 1180 flow [2024-06-20 16:36:48,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1180, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2024-06-20 16:36:48,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-20 16:36:48,793 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 1180 flow [2024-06-20 16:36:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:36:48,793 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -215182388, now seen corresponding path program 2 times [2024-06-20 16:36:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30485751] [2024-06-20 16:36:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:50,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:50,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30485751] [2024-06-20 16:36:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30485751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:50,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180183059] [2024-06-20 16:36:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:50,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:50,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:50,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 1180 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:50,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:50,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:50,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:50,876 INFO L124 PetriNetUnfolderBase]: 1999/2995 cut-off events. [2024-06-20 16:36:50,876 INFO L125 PetriNetUnfolderBase]: For 77647/77657 co-relation queries the response was YES. [2024-06-20 16:36:50,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18280 conditions, 2995 events. 1999/2995 cut-off events. For 77647/77657 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14018 event pairs, 486 based on Foata normal form. 12/3005 useless extension candidates. Maximal degree in co-relation 18225. Up to 2815 conditions per place. [2024-06-20 16:36:50,894 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 145 selfloop transitions, 29 changer transitions 0/177 dead transitions. [2024-06-20 16:36:50,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 177 transitions, 1716 flow [2024-06-20 16:36:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:36:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:36:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-20 16:36:50,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-20 16:36:50,895 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 1180 flow. Second operand 9 states and 147 transitions. [2024-06-20 16:36:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 177 transitions, 1716 flow [2024-06-20 16:36:50,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 177 transitions, 1658 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:50,955 INFO L231 Difference]: Finished difference. Result has 125 places, 144 transitions, 1295 flow [2024-06-20 16:36:50,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1295, PETRI_PLACES=125, PETRI_TRANSITIONS=144} [2024-06-20 16:36:50,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-20 16:36:50,955 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 144 transitions, 1295 flow [2024-06-20 16:36:50,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:50,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:50,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:50,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:36:50,956 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:50,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -220896680, now seen corresponding path program 4 times [2024-06-20 16:36:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692535192] [2024-06-20 16:36:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:52,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692535192] [2024-06-20 16:36:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692535192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:52,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:52,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808442215] [2024-06-20 16:36:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:52,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:52,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:52,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:52,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:52,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 144 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:52,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:52,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:52,778 INFO L124 PetriNetUnfolderBase]: 1871/2875 cut-off events. [2024-06-20 16:36:52,779 INFO L125 PetriNetUnfolderBase]: For 82467/82479 co-relation queries the response was YES. [2024-06-20 16:36:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18435 conditions, 2875 events. 1871/2875 cut-off events. For 82467/82479 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14155 event pairs, 403 based on Foata normal form. 8/2873 useless extension candidates. Maximal degree in co-relation 18377. Up to 2633 conditions per place. [2024-06-20 16:36:52,796 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 139 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-06-20 16:36:52,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 176 transitions, 1785 flow [2024-06-20 16:36:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-20 16:36:52,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-20 16:36:52,797 INFO L175 Difference]: Start difference. First operand has 125 places, 144 transitions, 1295 flow. Second operand 8 states and 138 transitions. [2024-06-20 16:36:52,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 176 transitions, 1785 flow [2024-06-20 16:36:52,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1744 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-20 16:36:52,865 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 1413 flow [2024-06-20 16:36:52,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1413, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2024-06-20 16:36:52,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-20 16:36:52,865 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 1413 flow [2024-06-20 16:36:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:52,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:52,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:52,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:36:52,866 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:52,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -215390150, now seen corresponding path program 5 times [2024-06-20 16:36:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:52,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211788724] [2024-06-20 16:36:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:54,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211788724] [2024-06-20 16:36:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211788724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932444876] [2024-06-20 16:36:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:54,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:54,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 1413 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:54,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:54,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:54,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:54,830 INFO L124 PetriNetUnfolderBase]: 1959/3026 cut-off events. [2024-06-20 16:36:54,830 INFO L125 PetriNetUnfolderBase]: For 98491/98506 co-relation queries the response was YES. [2024-06-20 16:36:54,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19650 conditions, 3026 events. 1959/3026 cut-off events. For 98491/98506 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15168 event pairs, 422 based on Foata normal form. 36/3053 useless extension candidates. Maximal degree in co-relation 19589. Up to 2580 conditions per place. [2024-06-20 16:36:54,850 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 139 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2024-06-20 16:36:54,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 184 transitions, 2027 flow [2024-06-20 16:36:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-20 16:36:54,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-20 16:36:54,851 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 1413 flow. Second operand 8 states and 144 transitions. [2024-06-20 16:36:54,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 184 transitions, 2027 flow [2024-06-20 16:36:54,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 184 transitions, 1932 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-20 16:36:54,939 INFO L231 Difference]: Finished difference. Result has 135 places, 151 transitions, 1463 flow [2024-06-20 16:36:54,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1463, PETRI_PLACES=135, PETRI_TRANSITIONS=151} [2024-06-20 16:36:54,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-20 16:36:54,939 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 151 transitions, 1463 flow [2024-06-20 16:36:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:36:54,940 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:54,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -215384198, now seen corresponding path program 3 times [2024-06-20 16:36:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062166150] [2024-06-20 16:36:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062166150] [2024-06-20 16:36:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062166150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609614056] [2024-06-20 16:36:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:56,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:56,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:56,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 151 transitions, 1463 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:56,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:56,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:56,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:57,099 INFO L124 PetriNetUnfolderBase]: 2132/3214 cut-off events. [2024-06-20 16:36:57,100 INFO L125 PetriNetUnfolderBase]: For 96843/96853 co-relation queries the response was YES. [2024-06-20 16:36:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20553 conditions, 3214 events. 2132/3214 cut-off events. For 96843/96853 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15465 event pairs, 507 based on Foata normal form. 12/3224 useless extension candidates. Maximal degree in co-relation 20490. Up to 3034 conditions per place. [2024-06-20 16:36:57,121 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 150 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-20 16:36:57,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 182 transitions, 1909 flow [2024-06-20 16:36:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:36:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:36:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-20 16:36:57,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 16:36:57,123 INFO L175 Difference]: Start difference. First operand has 135 places, 151 transitions, 1463 flow. Second operand 9 states and 145 transitions. [2024-06-20 16:36:57,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 182 transitions, 1909 flow [2024-06-20 16:36:57,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 182 transitions, 1782 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 16:36:57,233 INFO L231 Difference]: Finished difference. Result has 138 places, 151 transitions, 1402 flow [2024-06-20 16:36:57,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=138, PETRI_TRANSITIONS=151} [2024-06-20 16:36:57,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-20 16:36:57,234 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 151 transitions, 1402 flow [2024-06-20 16:36:57,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:57,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:57,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:57,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:36:57,234 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:57,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash -220900400, now seen corresponding path program 6 times [2024-06-20 16:36:57,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:57,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438007373] [2024-06-20 16:36:57,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:57,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:58,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:58,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438007373] [2024-06-20 16:36:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438007373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:58,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:36:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942639190] [2024-06-20 16:36:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:58,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:36:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:36:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:36:58,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:36:58,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 151 transitions, 1402 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:58,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:58,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:36:58,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:36:59,001 INFO L124 PetriNetUnfolderBase]: 1941/3003 cut-off events. [2024-06-20 16:36:59,001 INFO L125 PetriNetUnfolderBase]: For 95595/95607 co-relation queries the response was YES. [2024-06-20 16:36:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19377 conditions, 3003 events. 1941/3003 cut-off events. For 95595/95607 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15085 event pairs, 417 based on Foata normal form. 8/3001 useless extension candidates. Maximal degree in co-relation 19313. Up to 2751 conditions per place. [2024-06-20 16:36:59,022 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 144 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-20 16:36:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 180 transitions, 1876 flow [2024-06-20 16:36:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:36:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:36:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-20 16:36:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-20 16:36:59,023 INFO L175 Difference]: Start difference. First operand has 138 places, 151 transitions, 1402 flow. Second operand 8 states and 137 transitions. [2024-06-20 16:36:59,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 180 transitions, 1876 flow [2024-06-20 16:36:59,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 180 transitions, 1792 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:36:59,105 INFO L231 Difference]: Finished difference. Result has 138 places, 153 transitions, 1445 flow [2024-06-20 16:36:59,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=138, PETRI_TRANSITIONS=153} [2024-06-20 16:36:59,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-20 16:36:59,106 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 153 transitions, 1445 flow [2024-06-20 16:36:59,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:59,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:36:59,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:36:59,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:36:59,106 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:36:59,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:36:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1670879705, now seen corresponding path program 2 times [2024-06-20 16:36:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:36:59,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441651088] [2024-06-20 16:36:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:36:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:36:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:36:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:36:59,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:36:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441651088] [2024-06-20 16:36:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441651088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:36:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:36:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:36:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724766155] [2024-06-20 16:36:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:36:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:36:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:36:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:36:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:36:59,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:36:59,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 153 transitions, 1445 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:36:59,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:36:59,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:36:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:00,509 INFO L124 PetriNetUnfolderBase]: 2104/3177 cut-off events. [2024-06-20 16:37:00,509 INFO L125 PetriNetUnfolderBase]: For 100236/100243 co-relation queries the response was YES. [2024-06-20 16:37:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19935 conditions, 3177 events. 2104/3177 cut-off events. For 100236/100243 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15231 event pairs, 520 based on Foata normal form. 8/3182 useless extension candidates. Maximal degree in co-relation 19871. Up to 3071 conditions per place. [2024-06-20 16:37:00,529 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 138 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-20 16:37:00,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 166 transitions, 1809 flow [2024-06-20 16:37:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:37:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:37:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-20 16:37:00,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-20 16:37:00,530 INFO L175 Difference]: Start difference. First operand has 138 places, 153 transitions, 1445 flow. Second operand 6 states and 97 transitions. [2024-06-20 16:37:00,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 166 transitions, 1809 flow [2024-06-20 16:37:00,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 166 transitions, 1678 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-20 16:37:00,630 INFO L231 Difference]: Finished difference. Result has 138 places, 153 transitions, 1370 flow [2024-06-20 16:37:00,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1370, PETRI_PLACES=138, PETRI_TRANSITIONS=153} [2024-06-20 16:37:00,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-20 16:37:00,630 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 153 transitions, 1370 flow [2024-06-20 16:37:00,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:00,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:00,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:00,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:37:00,631 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:00,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash -454100347, now seen corresponding path program 3 times [2024-06-20 16:37:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754685649] [2024-06-20 16:37:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:01,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754685649] [2024-06-20 16:37:01,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754685649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:01,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:01,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546298427] [2024-06-20 16:37:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:01,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:01,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 153 transitions, 1370 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:01,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:01,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:01,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:01,982 INFO L124 PetriNetUnfolderBase]: 2092/3161 cut-off events. [2024-06-20 16:37:01,982 INFO L125 PetriNetUnfolderBase]: For 101402/101409 co-relation queries the response was YES. [2024-06-20 16:37:01,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19571 conditions, 3161 events. 2092/3161 cut-off events. For 101402/101409 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15092 event pairs, 522 based on Foata normal form. 8/3166 useless extension candidates. Maximal degree in co-relation 19506. Up to 3031 conditions per place. [2024-06-20 16:37:02,004 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 138 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-20 16:37:02,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 171 transitions, 1790 flow [2024-06-20 16:37:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 16:37:02,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-20 16:37:02,005 INFO L175 Difference]: Start difference. First operand has 138 places, 153 transitions, 1370 flow. Second operand 7 states and 109 transitions. [2024-06-20 16:37:02,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 171 transitions, 1790 flow [2024-06-20 16:37:02,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 171 transitions, 1740 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:02,090 INFO L231 Difference]: Finished difference. Result has 140 places, 156 transitions, 1432 flow [2024-06-20 16:37:02,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1432, PETRI_PLACES=140, PETRI_TRANSITIONS=156} [2024-06-20 16:37:02,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-20 16:37:02,090 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 156 transitions, 1432 flow [2024-06-20 16:37:02,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:02,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:02,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:02,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:37:02,090 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:02,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash 891534869, now seen corresponding path program 1 times [2024-06-20 16:37:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:02,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450641963] [2024-06-20 16:37:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450641963] [2024-06-20 16:37:03,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450641963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:03,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:03,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391131823] [2024-06-20 16:37:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:03,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:03,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 156 transitions, 1432 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:03,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:03,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:03,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:03,551 INFO L124 PetriNetUnfolderBase]: 2110/3181 cut-off events. [2024-06-20 16:37:03,551 INFO L125 PetriNetUnfolderBase]: For 105755/105755 co-relation queries the response was YES. [2024-06-20 16:37:03,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20176 conditions, 3181 events. 2110/3181 cut-off events. For 105755/105755 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15236 event pairs, 505 based on Foata normal form. 2/3182 useless extension candidates. Maximal degree in co-relation 20110. Up to 3115 conditions per place. [2024-06-20 16:37:03,573 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 158 selfloop transitions, 23 changer transitions 0/184 dead transitions. [2024-06-20 16:37:03,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 184 transitions, 1983 flow [2024-06-20 16:37:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-20 16:37:03,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:37:03,574 INFO L175 Difference]: Start difference. First operand has 140 places, 156 transitions, 1432 flow. Second operand 7 states and 112 transitions. [2024-06-20 16:37:03,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 184 transitions, 1983 flow [2024-06-20 16:37:03,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 184 transitions, 1893 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:03,666 INFO L231 Difference]: Finished difference. Result has 143 places, 164 transitions, 1481 flow [2024-06-20 16:37:03,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=143, PETRI_TRANSITIONS=164} [2024-06-20 16:37:03,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-20 16:37:03,667 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 164 transitions, 1481 flow [2024-06-20 16:37:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:03,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:03,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:03,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:37:03,667 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:03,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash 692238659, now seen corresponding path program 2 times [2024-06-20 16:37:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:03,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350818904] [2024-06-20 16:37:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:04,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:04,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350818904] [2024-06-20 16:37:04,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350818904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:04,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:04,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978354787] [2024-06-20 16:37:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:04,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:04,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 164 transitions, 1481 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:05,059 INFO L124 PetriNetUnfolderBase]: 2120/3195 cut-off events. [2024-06-20 16:37:05,059 INFO L125 PetriNetUnfolderBase]: For 111972/111972 co-relation queries the response was YES. [2024-06-20 16:37:05,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20699 conditions, 3195 events. 2120/3195 cut-off events. For 111972/111972 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15326 event pairs, 502 based on Foata normal form. 2/3196 useless extension candidates. Maximal degree in co-relation 20631. Up to 3151 conditions per place. [2024-06-20 16:37:05,080 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 161 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2024-06-20 16:37:05,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 183 transitions, 1920 flow [2024-06-20 16:37:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-20 16:37:05,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821428571428571 [2024-06-20 16:37:05,081 INFO L175 Difference]: Start difference. First operand has 143 places, 164 transitions, 1481 flow. Second operand 7 states and 107 transitions. [2024-06-20 16:37:05,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 183 transitions, 1920 flow [2024-06-20 16:37:05,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 183 transitions, 1862 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:05,177 INFO L231 Difference]: Finished difference. Result has 147 places, 167 transitions, 1508 flow [2024-06-20 16:37:05,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1508, PETRI_PLACES=147, PETRI_TRANSITIONS=167} [2024-06-20 16:37:05,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-20 16:37:05,178 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 167 transitions, 1508 flow [2024-06-20 16:37:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:05,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:05,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:05,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:37:05,178 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:05,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -767608223, now seen corresponding path program 3 times [2024-06-20 16:37:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565627204] [2024-06-20 16:37:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565627204] [2024-06-20 16:37:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565627204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660037292] [2024-06-20 16:37:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:06,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:06,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 167 transitions, 1508 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:06,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:06,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:06,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:06,669 INFO L124 PetriNetUnfolderBase]: 2114/3187 cut-off events. [2024-06-20 16:37:06,669 INFO L125 PetriNetUnfolderBase]: For 116312/116312 co-relation queries the response was YES. [2024-06-20 16:37:06,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20765 conditions, 3187 events. 2114/3187 cut-off events. For 116312/116312 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15237 event pairs, 502 based on Foata normal form. 2/3188 useless extension candidates. Maximal degree in co-relation 20695. Up to 3158 conditions per place. [2024-06-20 16:37:06,690 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 163 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2024-06-20 16:37:06,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 180 transitions, 1903 flow [2024-06-20 16:37:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-20 16:37:06,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857 [2024-06-20 16:37:06,693 INFO L175 Difference]: Start difference. First operand has 147 places, 167 transitions, 1508 flow. Second operand 7 states and 101 transitions. [2024-06-20 16:37:06,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 180 transitions, 1903 flow [2024-06-20 16:37:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 180 transitions, 1849 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:06,784 INFO L231 Difference]: Finished difference. Result has 149 places, 168 transitions, 1499 flow [2024-06-20 16:37:06,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1499, PETRI_PLACES=149, PETRI_TRANSITIONS=168} [2024-06-20 16:37:06,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-20 16:37:06,785 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 168 transitions, 1499 flow [2024-06-20 16:37:06,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:06,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:06,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:37:06,786 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:06,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1681626886, now seen corresponding path program 1 times [2024-06-20 16:37:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:06,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964823270] [2024-06-20 16:37:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964823270] [2024-06-20 16:37:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964823270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:07,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:07,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:07,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379591369] [2024-06-20 16:37:07,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:07,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:07,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:07,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:07,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 168 transitions, 1499 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:07,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:07,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:07,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:08,132 INFO L124 PetriNetUnfolderBase]: 2111/3183 cut-off events. [2024-06-20 16:37:08,132 INFO L125 PetriNetUnfolderBase]: For 120105/120105 co-relation queries the response was YES. [2024-06-20 16:37:08,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 3183 events. 2111/3183 cut-off events. For 120105/120105 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15230 event pairs, 505 based on Foata normal form. 1/3183 useless extension candidates. Maximal degree in co-relation 20771. Up to 3156 conditions per place. [2024-06-20 16:37:08,157 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 162 selfloop transitions, 16 changer transitions 0/181 dead transitions. [2024-06-20 16:37:08,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 181 transitions, 1921 flow [2024-06-20 16:37:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:37:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:37:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-20 16:37:08,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:37:08,158 INFO L175 Difference]: Start difference. First operand has 149 places, 168 transitions, 1499 flow. Second operand 6 states and 90 transitions. [2024-06-20 16:37:08,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 181 transitions, 1921 flow [2024-06-20 16:37:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 181 transitions, 1889 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:08,314 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1555 flow [2024-06-20 16:37:08,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1555, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-20 16:37:08,314 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-20 16:37:08,314 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1555 flow [2024-06-20 16:37:08,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:08,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:08,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:37:08,315 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:08,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1648066645, now seen corresponding path program 1 times [2024-06-20 16:37:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:08,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026266086] [2024-06-20 16:37:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:09,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:09,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026266086] [2024-06-20 16:37:09,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026266086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:09,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:09,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358668773] [2024-06-20 16:37:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:09,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:09,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1555 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:09,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:09,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:09,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:10,605 INFO L124 PetriNetUnfolderBase]: 2106/3178 cut-off events. [2024-06-20 16:37:10,606 INFO L125 PetriNetUnfolderBase]: For 126027/126037 co-relation queries the response was YES. [2024-06-20 16:37:10,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21165 conditions, 3178 events. 2106/3178 cut-off events. For 126027/126037 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15197 event pairs, 501 based on Foata normal form. 10/3186 useless extension candidates. Maximal degree in co-relation 21093. Up to 2996 conditions per place. [2024-06-20 16:37:10,628 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 169 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-20 16:37:10,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 208 transitions, 2083 flow [2024-06-20 16:37:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:37:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:37:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-20 16:37:10,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-20 16:37:10,629 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1555 flow. Second operand 9 states and 146 transitions. [2024-06-20 16:37:10,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 208 transitions, 2083 flow [2024-06-20 16:37:10,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 208 transitions, 2027 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-20 16:37:10,751 INFO L231 Difference]: Finished difference. Result has 156 places, 174 transitions, 1619 flow [2024-06-20 16:37:10,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1619, PETRI_PLACES=156, PETRI_TRANSITIONS=174} [2024-06-20 16:37:10,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-20 16:37:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 174 transitions, 1619 flow [2024-06-20 16:37:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:37:10,753 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:10,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1747386121, now seen corresponding path program 1 times [2024-06-20 16:37:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914915680] [2024-06-20 16:37:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914915680] [2024-06-20 16:37:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914915680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065124645] [2024-06-20 16:37:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:12,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 174 transitions, 1619 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:12,929 INFO L124 PetriNetUnfolderBase]: 2334/3534 cut-off events. [2024-06-20 16:37:12,929 INFO L125 PetriNetUnfolderBase]: For 146310/146314 co-relation queries the response was YES. [2024-06-20 16:37:12,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23587 conditions, 3534 events. 2334/3534 cut-off events. For 146310/146314 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17263 event pairs, 523 based on Foata normal form. 24/3557 useless extension candidates. Maximal degree in co-relation 23513. Up to 3208 conditions per place. [2024-06-20 16:37:12,952 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 207 selfloop transitions, 39 changer transitions 0/249 dead transitions. [2024-06-20 16:37:12,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 249 transitions, 2583 flow [2024-06-20 16:37:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:37:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:37:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-20 16:37:12,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2024-06-20 16:37:12,953 INFO L175 Difference]: Start difference. First operand has 156 places, 174 transitions, 1619 flow. Second operand 11 states and 182 transitions. [2024-06-20 16:37:12,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 249 transitions, 2583 flow [2024-06-20 16:37:13,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 249 transitions, 2364 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:37:13,061 INFO L231 Difference]: Finished difference. Result has 165 places, 201 transitions, 1878 flow [2024-06-20 16:37:13,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1878, PETRI_PLACES=165, PETRI_TRANSITIONS=201} [2024-06-20 16:37:13,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-20 16:37:13,062 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 201 transitions, 1878 flow [2024-06-20 16:37:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:13,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:13,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:37:13,062 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1163111407, now seen corresponding path program 2 times [2024-06-20 16:37:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258193356] [2024-06-20 16:37:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258193356] [2024-06-20 16:37:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258193356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:14,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:14,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:14,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210945990] [2024-06-20 16:37:14,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:14,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:14,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 201 transitions, 1878 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:14,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:14,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:14,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:15,393 INFO L124 PetriNetUnfolderBase]: 2426/3690 cut-off events. [2024-06-20 16:37:15,393 INFO L125 PetriNetUnfolderBase]: For 151310/151330 co-relation queries the response was YES. [2024-06-20 16:37:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24475 conditions, 3690 events. 2426/3690 cut-off events. For 151310/151330 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18357 event pairs, 529 based on Foata normal form. 38/3723 useless extension candidates. Maximal degree in co-relation 24395. Up to 3130 conditions per place. [2024-06-20 16:37:15,422 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 192 selfloop transitions, 53 changer transitions 0/248 dead transitions. [2024-06-20 16:37:15,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 248 transitions, 2580 flow [2024-06-20 16:37:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:37:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:37:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-20 16:37:15,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-20 16:37:15,423 INFO L175 Difference]: Start difference. First operand has 165 places, 201 transitions, 1878 flow. Second operand 10 states and 164 transitions. [2024-06-20 16:37:15,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 248 transitions, 2580 flow [2024-06-20 16:37:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 248 transitions, 2511 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-20 16:37:15,598 INFO L231 Difference]: Finished difference. Result has 171 places, 204 transitions, 1991 flow [2024-06-20 16:37:15,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1991, PETRI_PLACES=171, PETRI_TRANSITIONS=204} [2024-06-20 16:37:15,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-20 16:37:15,599 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 204 transitions, 1991 flow [2024-06-20 16:37:15,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:15,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:15,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:15,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:37:15,599 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:15,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash -601426224, now seen corresponding path program 1 times [2024-06-20 16:37:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:15,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271501409] [2024-06-20 16:37:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:15,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271501409] [2024-06-20 16:37:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271501409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296681822] [2024-06-20 16:37:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:16,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:16,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 204 transitions, 1991 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:16,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:16,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:16,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:16,966 INFO L124 PetriNetUnfolderBase]: 2463/3740 cut-off events. [2024-06-20 16:37:16,966 INFO L125 PetriNetUnfolderBase]: For 148214/148230 co-relation queries the response was YES. [2024-06-20 16:37:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25116 conditions, 3740 events. 2463/3740 cut-off events. For 148214/148230 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18658 event pairs, 573 based on Foata normal form. 16/3753 useless extension candidates. Maximal degree in co-relation 25036. Up to 3642 conditions per place. [2024-06-20 16:37:16,998 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 197 selfloop transitions, 34 changer transitions 0/234 dead transitions. [2024-06-20 16:37:16,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 234 transitions, 2733 flow [2024-06-20 16:37:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-20 16:37:16,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-20 16:37:16,999 INFO L175 Difference]: Start difference. First operand has 171 places, 204 transitions, 1991 flow. Second operand 7 states and 110 transitions. [2024-06-20 16:37:16,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 234 transitions, 2733 flow [2024-06-20 16:37:17,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 234 transitions, 2603 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 16:37:17,221 INFO L231 Difference]: Finished difference. Result has 172 places, 216 transitions, 2127 flow [2024-06-20 16:37:17,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2127, PETRI_PLACES=172, PETRI_TRANSITIONS=216} [2024-06-20 16:37:17,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-20 16:37:17,221 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 216 transitions, 2127 flow [2024-06-20 16:37:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:17,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:17,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:37:17,223 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:17,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -594759984, now seen corresponding path program 2 times [2024-06-20 16:37:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:17,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117321182] [2024-06-20 16:37:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117321182] [2024-06-20 16:37:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117321182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:17,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:17,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091524831] [2024-06-20 16:37:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:17,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:17,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 216 transitions, 2127 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:17,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:17,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:17,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:18,589 INFO L124 PetriNetUnfolderBase]: 2457/3732 cut-off events. [2024-06-20 16:37:18,590 INFO L125 PetriNetUnfolderBase]: For 145000/145016 co-relation queries the response was YES. [2024-06-20 16:37:18,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25001 conditions, 3732 events. 2457/3732 cut-off events. For 145000/145016 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 18572 event pairs, 572 based on Foata normal form. 16/3745 useless extension candidates. Maximal degree in co-relation 24918. Up to 3672 conditions per place. [2024-06-20 16:37:18,616 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 203 selfloop transitions, 22 changer transitions 0/228 dead transitions. [2024-06-20 16:37:18,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 228 transitions, 2621 flow [2024-06-20 16:37:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:37:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:37:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-20 16:37:18,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:37:18,617 INFO L175 Difference]: Start difference. First operand has 172 places, 216 transitions, 2127 flow. Second operand 6 states and 92 transitions. [2024-06-20 16:37:18,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 228 transitions, 2621 flow [2024-06-20 16:37:18,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 228 transitions, 2538 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:18,797 INFO L231 Difference]: Finished difference. Result has 175 places, 216 transitions, 2098 flow [2024-06-20 16:37:18,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2098, PETRI_PLACES=175, PETRI_TRANSITIONS=216} [2024-06-20 16:37:18,797 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-20 16:37:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 216 transitions, 2098 flow [2024-06-20 16:37:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:18,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:18,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:37:18,798 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 382614879, now seen corresponding path program 3 times [2024-06-20 16:37:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:18,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560211186] [2024-06-20 16:37:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:20,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:20,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560211186] [2024-06-20 16:37:20,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560211186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:20,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:20,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045833380] [2024-06-20 16:37:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:20,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:20,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 216 transitions, 2098 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:20,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:20,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:20,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:21,140 INFO L124 PetriNetUnfolderBase]: 2532/3860 cut-off events. [2024-06-20 16:37:21,140 INFO L125 PetriNetUnfolderBase]: For 157228/157238 co-relation queries the response was YES. [2024-06-20 16:37:21,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25749 conditions, 3860 events. 2532/3860 cut-off events. For 157228/157238 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19480 event pairs, 495 based on Foata normal form. 24/3879 useless extension candidates. Maximal degree in co-relation 25665. Up to 3455 conditions per place. [2024-06-20 16:37:21,175 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 208 selfloop transitions, 50 changer transitions 0/261 dead transitions. [2024-06-20 16:37:21,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 261 transitions, 2825 flow [2024-06-20 16:37:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:37:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:37:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-20 16:37:21,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-20 16:37:21,177 INFO L175 Difference]: Start difference. First operand has 175 places, 216 transitions, 2098 flow. Second operand 10 states and 164 transitions. [2024-06-20 16:37:21,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 261 transitions, 2825 flow [2024-06-20 16:37:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 261 transitions, 2783 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 16:37:21,341 INFO L231 Difference]: Finished difference. Result has 182 places, 220 transitions, 2238 flow [2024-06-20 16:37:21,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=182, PETRI_TRANSITIONS=220} [2024-06-20 16:37:21,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-20 16:37:21,342 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 220 transitions, 2238 flow [2024-06-20 16:37:21,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:21,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:21,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:21,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:37:21,342 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:21,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 580900919, now seen corresponding path program 4 times [2024-06-20 16:37:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:21,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849851947] [2024-06-20 16:37:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:21,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849851947] [2024-06-20 16:37:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849851947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:22,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:22,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:37:22,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122254191] [2024-06-20 16:37:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:37:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:37:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:37:22,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:22,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 220 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:22,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:22,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:22,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:23,294 INFO L124 PetriNetUnfolderBase]: 2693/4124 cut-off events. [2024-06-20 16:37:23,294 INFO L125 PetriNetUnfolderBase]: For 179350/179366 co-relation queries the response was YES. [2024-06-20 16:37:23,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28511 conditions, 4124 events. 2693/4124 cut-off events. For 179350/179366 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21325 event pairs, 540 based on Foata normal form. 30/4151 useless extension candidates. Maximal degree in co-relation 28425. Up to 3383 conditions per place. [2024-06-20 16:37:23,328 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 219 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2024-06-20 16:37:23,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 268 transitions, 3196 flow [2024-06-20 16:37:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:37:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:37:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:37:23,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-20 16:37:23,332 INFO L175 Difference]: Start difference. First operand has 182 places, 220 transitions, 2238 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:37:23,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 268 transitions, 3196 flow [2024-06-20 16:37:23,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 268 transitions, 3053 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:37:23,569 INFO L231 Difference]: Finished difference. Result has 184 places, 223 transitions, 2314 flow [2024-06-20 16:37:23,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2314, PETRI_PLACES=184, PETRI_TRANSITIONS=223} [2024-06-20 16:37:23,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-20 16:37:23,570 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 223 transitions, 2314 flow [2024-06-20 16:37:23,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:23,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:23,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:37:23,571 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:23,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash 548848659, now seen corresponding path program 5 times [2024-06-20 16:37:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8741392] [2024-06-20 16:37:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8741392] [2024-06-20 16:37:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8741392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438932322] [2024-06-20 16:37:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:24,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 223 transitions, 2314 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:24,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:24,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:25,775 INFO L124 PetriNetUnfolderBase]: 2785/4276 cut-off events. [2024-06-20 16:37:25,776 INFO L125 PetriNetUnfolderBase]: For 191915/191931 co-relation queries the response was YES. [2024-06-20 16:37:25,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29490 conditions, 4276 events. 2785/4276 cut-off events. For 191915/191931 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22489 event pairs, 603 based on Foata normal form. 34/4307 useless extension candidates. Maximal degree in co-relation 29403. Up to 3869 conditions per place. [2024-06-20 16:37:25,813 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 219 selfloop transitions, 47 changer transitions 0/269 dead transitions. [2024-06-20 16:37:25,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 269 transitions, 3082 flow [2024-06-20 16:37:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:37:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:37:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:37:25,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-20 16:37:25,814 INFO L175 Difference]: Start difference. First operand has 184 places, 223 transitions, 2314 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:37:25,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 269 transitions, 3082 flow [2024-06-20 16:37:26,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 269 transitions, 3018 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-20 16:37:26,073 INFO L231 Difference]: Finished difference. Result has 190 places, 226 transitions, 2432 flow [2024-06-20 16:37:26,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2432, PETRI_PLACES=190, PETRI_TRANSITIONS=226} [2024-06-20 16:37:26,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-20 16:37:26,073 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 226 transitions, 2432 flow [2024-06-20 16:37:26,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:26,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:26,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:37:26,074 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:26,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 555104769, now seen corresponding path program 6 times [2024-06-20 16:37:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193953170] [2024-06-20 16:37:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193953170] [2024-06-20 16:37:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193953170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:37:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361153204] [2024-06-20 16:37:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:37:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:37:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:37:27,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:27,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 226 transitions, 2432 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:27,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:27,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:27,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:28,330 INFO L124 PetriNetUnfolderBase]: 2810/4323 cut-off events. [2024-06-20 16:37:28,331 INFO L125 PetriNetUnfolderBase]: For 195953/195969 co-relation queries the response was YES. [2024-06-20 16:37:28,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29764 conditions, 4323 events. 2810/4323 cut-off events. For 195953/195969 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22810 event pairs, 600 based on Foata normal form. 34/4354 useless extension candidates. Maximal degree in co-relation 29675. Up to 3796 conditions per place. [2024-06-20 16:37:28,367 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 221 selfloop transitions, 47 changer transitions 0/271 dead transitions. [2024-06-20 16:37:28,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 271 transitions, 3189 flow [2024-06-20 16:37:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:37:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:37:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:37:28,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-20 16:37:28,368 INFO L175 Difference]: Start difference. First operand has 190 places, 226 transitions, 2432 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:37:28,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 271 transitions, 3189 flow [2024-06-20 16:37:28,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 271 transitions, 3071 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:37:28,702 INFO L231 Difference]: Finished difference. Result has 192 places, 228 transitions, 2481 flow [2024-06-20 16:37:28,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2481, PETRI_PLACES=192, PETRI_TRANSITIONS=228} [2024-06-20 16:37:28,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-20 16:37:28,703 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 228 transitions, 2481 flow [2024-06-20 16:37:28,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:28,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:28,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:37:28,703 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:28,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1447700666, now seen corresponding path program 1 times [2024-06-20 16:37:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719356197] [2024-06-20 16:37:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:29,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719356197] [2024-06-20 16:37:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719356197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:29,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:29,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049476750] [2024-06-20 16:37:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:29,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:29,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:29,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:29,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 228 transitions, 2481 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:29,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:29,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:29,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:30,639 INFO L124 PetriNetUnfolderBase]: 2835/4362 cut-off events. [2024-06-20 16:37:30,639 INFO L125 PetriNetUnfolderBase]: For 189553/189559 co-relation queries the response was YES. [2024-06-20 16:37:30,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30033 conditions, 4362 events. 2835/4362 cut-off events. For 189553/189559 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23157 event pairs, 955 based on Foata normal form. 8/4368 useless extension candidates. Maximal degree in co-relation 29943. Up to 4303 conditions per place. [2024-06-20 16:37:30,678 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 230 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-20 16:37:30,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 257 transitions, 3203 flow [2024-06-20 16:37:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-20 16:37:30,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 16:37:30,679 INFO L175 Difference]: Start difference. First operand has 192 places, 228 transitions, 2481 flow. Second operand 8 states and 114 transitions. [2024-06-20 16:37:30,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 257 transitions, 3203 flow [2024-06-20 16:37:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 257 transitions, 3052 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 16:37:31,042 INFO L231 Difference]: Finished difference. Result has 194 places, 242 transitions, 2587 flow [2024-06-20 16:37:31,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2587, PETRI_PLACES=194, PETRI_TRANSITIONS=242} [2024-06-20 16:37:31,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-20 16:37:31,042 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 242 transitions, 2587 flow [2024-06-20 16:37:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:31,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:31,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:31,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:37:31,043 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:31,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash -257649764, now seen corresponding path program 2 times [2024-06-20 16:37:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105529027] [2024-06-20 16:37:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:31,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105529027] [2024-06-20 16:37:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105529027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:31,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:31,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:31,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17172435] [2024-06-20 16:37:31,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:31,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:31,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:31,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 242 transitions, 2587 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:31,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:31,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:31,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:32,838 INFO L124 PetriNetUnfolderBase]: 2843/4375 cut-off events. [2024-06-20 16:37:32,838 INFO L125 PetriNetUnfolderBase]: For 192349/192359 co-relation queries the response was YES. [2024-06-20 16:37:32,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29954 conditions, 4375 events. 2843/4375 cut-off events. For 192349/192359 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23228 event pairs, 956 based on Foata normal form. 12/4385 useless extension candidates. Maximal degree in co-relation 29860. Up to 4291 conditions per place. [2024-06-20 16:37:32,877 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 216 selfloop transitions, 35 changer transitions 0/254 dead transitions. [2024-06-20 16:37:32,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 254 transitions, 3157 flow [2024-06-20 16:37:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:37:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:37:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-20 16:37:32,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:37:32,878 INFO L175 Difference]: Start difference. First operand has 194 places, 242 transitions, 2587 flow. Second operand 6 states and 92 transitions. [2024-06-20 16:37:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 254 transitions, 3157 flow [2024-06-20 16:37:33,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 254 transitions, 3087 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:33,194 INFO L231 Difference]: Finished difference. Result has 197 places, 244 transitions, 2640 flow [2024-06-20 16:37:33,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2640, PETRI_PLACES=197, PETRI_TRANSITIONS=244} [2024-06-20 16:37:33,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-20 16:37:33,195 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 244 transitions, 2640 flow [2024-06-20 16:37:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:33,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:33,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:37:33,195 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:33,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1272577290, now seen corresponding path program 3 times [2024-06-20 16:37:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394010525] [2024-06-20 16:37:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394010525] [2024-06-20 16:37:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394010525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700910445] [2024-06-20 16:37:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:33,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:33,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:33,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 244 transitions, 2640 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:34,697 INFO L124 PetriNetUnfolderBase]: 2853/4394 cut-off events. [2024-06-20 16:37:34,698 INFO L125 PetriNetUnfolderBase]: For 200553/200563 co-relation queries the response was YES. [2024-06-20 16:37:34,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30367 conditions, 4394 events. 2853/4394 cut-off events. For 200553/200563 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23422 event pairs, 961 based on Foata normal form. 12/4404 useless extension candidates. Maximal degree in co-relation 30272. Up to 4302 conditions per place. [2024-06-20 16:37:34,736 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 235 selfloop transitions, 26 changer transitions 0/264 dead transitions. [2024-06-20 16:37:34,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 264 transitions, 3276 flow [2024-06-20 16:37:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-20 16:37:34,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-20 16:37:34,737 INFO L175 Difference]: Start difference. First operand has 197 places, 244 transitions, 2640 flow. Second operand 7 states and 108 transitions. [2024-06-20 16:37:34,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 264 transitions, 3276 flow [2024-06-20 16:37:35,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 264 transitions, 3179 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-20 16:37:35,057 INFO L231 Difference]: Finished difference. Result has 200 places, 247 transitions, 2665 flow [2024-06-20 16:37:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2665, PETRI_PLACES=200, PETRI_TRANSITIONS=247} [2024-06-20 16:37:35,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-20 16:37:35,058 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 247 transitions, 2665 flow [2024-06-20 16:37:35,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:35,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:37:35,058 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:35,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1284957450, now seen corresponding path program 4 times [2024-06-20 16:37:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386036400] [2024-06-20 16:37:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386036400] [2024-06-20 16:37:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386036400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543779268] [2024-06-20 16:37:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:35,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:35,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 247 transitions, 2665 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:35,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:35,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:35,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:36,512 INFO L124 PetriNetUnfolderBase]: 2871/4419 cut-off events. [2024-06-20 16:37:36,512 INFO L125 PetriNetUnfolderBase]: For 201084/201094 co-relation queries the response was YES. [2024-06-20 16:37:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30728 conditions, 4419 events. 2871/4419 cut-off events. For 201084/201094 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23617 event pairs, 962 based on Foata normal form. 12/4429 useless extension candidates. Maximal degree in co-relation 30632. Up to 4266 conditions per place. [2024-06-20 16:37:36,554 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 222 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2024-06-20 16:37:36,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 273 transitions, 3495 flow [2024-06-20 16:37:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-20 16:37:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-06-20 16:37:36,555 INFO L175 Difference]: Start difference. First operand has 200 places, 247 transitions, 2665 flow. Second operand 7 states and 111 transitions. [2024-06-20 16:37:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 273 transitions, 3495 flow [2024-06-20 16:37:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 273 transitions, 3353 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 16:37:36,914 INFO L231 Difference]: Finished difference. Result has 202 places, 256 transitions, 2796 flow [2024-06-20 16:37:36,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2796, PETRI_PLACES=202, PETRI_TRANSITIONS=256} [2024-06-20 16:37:36,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-20 16:37:36,914 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 256 transitions, 2796 flow [2024-06-20 16:37:36,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:36,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:36,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:37:36,915 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:36,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1973941756, now seen corresponding path program 5 times [2024-06-20 16:37:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401163219] [2024-06-20 16:37:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:37,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401163219] [2024-06-20 16:37:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401163219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252633045] [2024-06-20 16:37:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:37,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:37,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:37,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 256 transitions, 2796 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:37,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:37,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:37,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:38,374 INFO L124 PetriNetUnfolderBase]: 2881/4428 cut-off events. [2024-06-20 16:37:38,374 INFO L125 PetriNetUnfolderBase]: For 210256/210266 co-relation queries the response was YES. [2024-06-20 16:37:38,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31398 conditions, 4428 events. 2881/4428 cut-off events. For 210256/210266 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23543 event pairs, 960 based on Foata normal form. 12/4438 useless extension candidates. Maximal degree in co-relation 31301. Up to 4337 conditions per place. [2024-06-20 16:37:38,416 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 233 selfloop transitions, 36 changer transitions 0/272 dead transitions. [2024-06-20 16:37:38,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 272 transitions, 3542 flow [2024-06-20 16:37:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-20 16:37:38,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:37:38,417 INFO L175 Difference]: Start difference. First operand has 202 places, 256 transitions, 2796 flow. Second operand 7 states and 105 transitions. [2024-06-20 16:37:38,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 272 transitions, 3542 flow [2024-06-20 16:37:38,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 272 transitions, 3454 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:38,750 INFO L231 Difference]: Finished difference. Result has 206 places, 259 transitions, 2856 flow [2024-06-20 16:37:38,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2856, PETRI_PLACES=206, PETRI_TRANSITIONS=259} [2024-06-20 16:37:38,751 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-20 16:37:38,751 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 259 transitions, 2856 flow [2024-06-20 16:37:38,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:38,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:38,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:37:38,751 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:38,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -604827878, now seen corresponding path program 6 times [2024-06-20 16:37:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:38,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25302170] [2024-06-20 16:37:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25302170] [2024-06-20 16:37:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25302170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:39,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:39,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:37:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137565393] [2024-06-20 16:37:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:37:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:39,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:37:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:37:39,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:39,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 259 transitions, 2856 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:39,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:39,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:39,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:40,249 INFO L124 PetriNetUnfolderBase]: 2875/4420 cut-off events. [2024-06-20 16:37:40,249 INFO L125 PetriNetUnfolderBase]: For 206658/206668 co-relation queries the response was YES. [2024-06-20 16:37:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30989 conditions, 4420 events. 2875/4420 cut-off events. For 206658/206668 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23510 event pairs, 965 based on Foata normal form. 12/4430 useless extension candidates. Maximal degree in co-relation 30890. Up to 4354 conditions per place. [2024-06-20 16:37:40,287 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 239 selfloop transitions, 28 changer transitions 0/270 dead transitions. [2024-06-20 16:37:40,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 270 transitions, 3428 flow [2024-06-20 16:37:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-20 16:37:40,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-20 16:37:40,288 INFO L175 Difference]: Start difference. First operand has 206 places, 259 transitions, 2856 flow. Second operand 7 states and 102 transitions. [2024-06-20 16:37:40,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 270 transitions, 3428 flow [2024-06-20 16:37:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 270 transitions, 3249 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:40,680 INFO L231 Difference]: Finished difference. Result has 208 places, 259 transitions, 2739 flow [2024-06-20 16:37:40,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2739, PETRI_PLACES=208, PETRI_TRANSITIONS=259} [2024-06-20 16:37:40,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-20 16:37:40,681 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 259 transitions, 2739 flow [2024-06-20 16:37:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:40,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:40,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:40,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:37:40,681 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:40,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash -590534150, now seen corresponding path program 3 times [2024-06-20 16:37:40,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:40,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378996463] [2024-06-20 16:37:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:40,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:41,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378996463] [2024-06-20 16:37:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378996463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:41,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:37:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171374840] [2024-06-20 16:37:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:41,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:37:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:37:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:37:41,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:41,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 259 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:41,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:41,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:41,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:42,551 INFO L124 PetriNetUnfolderBase]: 2883/4432 cut-off events. [2024-06-20 16:37:42,552 INFO L125 PetriNetUnfolderBase]: For 213463/213473 co-relation queries the response was YES. [2024-06-20 16:37:42,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31069 conditions, 4432 events. 2883/4432 cut-off events. For 213463/213473 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23588 event pairs, 963 based on Foata normal form. 12/4442 useless extension candidates. Maximal degree in co-relation 30970. Up to 4323 conditions per place. [2024-06-20 16:37:42,595 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 231 selfloop transitions, 42 changer transitions 0/276 dead transitions. [2024-06-20 16:37:42,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 276 transitions, 3495 flow [2024-06-20 16:37:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-20 16:37:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-20 16:37:42,597 INFO L175 Difference]: Start difference. First operand has 208 places, 259 transitions, 2739 flow. Second operand 7 states and 104 transitions. [2024-06-20 16:37:42,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 276 transitions, 3495 flow [2024-06-20 16:37:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 276 transitions, 3374 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-20 16:37:43,003 INFO L231 Difference]: Finished difference. Result has 208 places, 263 transitions, 2791 flow [2024-06-20 16:37:43,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2791, PETRI_PLACES=208, PETRI_TRANSITIONS=263} [2024-06-20 16:37:43,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-20 16:37:43,004 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 263 transitions, 2791 flow [2024-06-20 16:37:43,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:43,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:43,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:43,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:37:43,005 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:43,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2090139194, now seen corresponding path program 4 times [2024-06-20 16:37:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:43,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886447965] [2024-06-20 16:37:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:44,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886447965] [2024-06-20 16:37:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886447965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:44,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:44,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:44,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191773849] [2024-06-20 16:37:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:44,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:44,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:44,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 263 transitions, 2791 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:44,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:44,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:44,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:44,988 INFO L124 PetriNetUnfolderBase]: 2878/4425 cut-off events. [2024-06-20 16:37:44,988 INFO L125 PetriNetUnfolderBase]: For 219774/219784 co-relation queries the response was YES. [2024-06-20 16:37:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31117 conditions, 4425 events. 2878/4425 cut-off events. For 219774/219784 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23550 event pairs, 966 based on Foata normal form. 12/4435 useless extension candidates. Maximal degree in co-relation 31018. Up to 4345 conditions per place. [2024-06-20 16:37:45,031 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 233 selfloop transitions, 38 changer transitions 0/274 dead transitions. [2024-06-20 16:37:45,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 274 transitions, 3365 flow [2024-06-20 16:37:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-20 16:37:45,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-20 16:37:45,032 INFO L175 Difference]: Start difference. First operand has 208 places, 263 transitions, 2791 flow. Second operand 8 states and 112 transitions. [2024-06-20 16:37:45,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 274 transitions, 3365 flow [2024-06-20 16:37:45,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 3262 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:45,478 INFO L231 Difference]: Finished difference. Result has 213 places, 263 transitions, 2769 flow [2024-06-20 16:37:45,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2769, PETRI_PLACES=213, PETRI_TRANSITIONS=263} [2024-06-20 16:37:45,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-20 16:37:45,479 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 263 transitions, 2769 flow [2024-06-20 16:37:45,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:45,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:45,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:37:45,479 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1867773342, now seen corresponding path program 1 times [2024-06-20 16:37:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625032449] [2024-06-20 16:37:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625032449] [2024-06-20 16:37:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625032449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063304543] [2024-06-20 16:37:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:46,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:46,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 263 transitions, 2769 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:46,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:46,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:46,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:47,327 INFO L124 PetriNetUnfolderBase]: 2918/4486 cut-off events. [2024-06-20 16:37:47,327 INFO L125 PetriNetUnfolderBase]: For 234324/234334 co-relation queries the response was YES. [2024-06-20 16:37:47,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31675 conditions, 4486 events. 2918/4486 cut-off events. For 234324/234334 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23980 event pairs, 976 based on Foata normal form. 18/4502 useless extension candidates. Maximal degree in co-relation 31574. Up to 4294 conditions per place. [2024-06-20 16:37:47,369 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 251 selfloop transitions, 36 changer transitions 0/290 dead transitions. [2024-06-20 16:37:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 290 transitions, 3507 flow [2024-06-20 16:37:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-20 16:37:47,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 16:37:47,370 INFO L175 Difference]: Start difference. First operand has 213 places, 263 transitions, 2769 flow. Second operand 8 states and 127 transitions. [2024-06-20 16:37:47,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 290 transitions, 3507 flow [2024-06-20 16:37:47,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 290 transitions, 3416 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 16:37:47,763 INFO L231 Difference]: Finished difference. Result has 214 places, 267 transitions, 2826 flow [2024-06-20 16:37:47,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2826, PETRI_PLACES=214, PETRI_TRANSITIONS=267} [2024-06-20 16:37:47,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-20 16:37:47,763 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 267 transitions, 2826 flow [2024-06-20 16:37:47,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:47,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:47,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:37:47,764 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1280323756, now seen corresponding path program 2 times [2024-06-20 16:37:47,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:47,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926277849] [2024-06-20 16:37:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:48,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926277849] [2024-06-20 16:37:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926277849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:48,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849771393] [2024-06-20 16:37:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:48,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:48,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:48,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:48,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 267 transitions, 2826 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:48,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:48,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:48,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:49,697 INFO L124 PetriNetUnfolderBase]: 2936/4510 cut-off events. [2024-06-20 16:37:49,697 INFO L125 PetriNetUnfolderBase]: For 237721/237721 co-relation queries the response was YES. [2024-06-20 16:37:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 4510 events. 2936/4510 cut-off events. For 237721/237721 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24183 event pairs, 1474 based on Foata normal form. 2/4511 useless extension candidates. Maximal degree in co-relation 32504. Up to 4389 conditions per place. [2024-06-20 16:37:49,736 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 260 selfloop transitions, 36 changer transitions 0/299 dead transitions. [2024-06-20 16:37:49,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 299 transitions, 3791 flow [2024-06-20 16:37:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-20 16:37:49,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 16:37:49,738 INFO L175 Difference]: Start difference. First operand has 214 places, 267 transitions, 2826 flow. Second operand 8 states and 126 transitions. [2024-06-20 16:37:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 299 transitions, 3791 flow [2024-06-20 16:37:50,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 299 transitions, 3642 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-20 16:37:50,205 INFO L231 Difference]: Finished difference. Result has 218 places, 278 transitions, 2984 flow [2024-06-20 16:37:50,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2984, PETRI_PLACES=218, PETRI_TRANSITIONS=278} [2024-06-20 16:37:50,205 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-20 16:37:50,205 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 278 transitions, 2984 flow [2024-06-20 16:37:50,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:50,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:50,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:50,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:37:50,206 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:50,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:50,206 INFO L85 PathProgramCache]: Analyzing trace with hash -15430278, now seen corresponding path program 1 times [2024-06-20 16:37:50,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:50,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526434108] [2024-06-20 16:37:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:50,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526434108] [2024-06-20 16:37:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526434108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111617728] [2024-06-20 16:37:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:51,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:51,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:51,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 278 transitions, 2984 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:51,961 INFO L124 PetriNetUnfolderBase]: 2944/4523 cut-off events. [2024-06-20 16:37:51,961 INFO L125 PetriNetUnfolderBase]: For 247765/247765 co-relation queries the response was YES. [2024-06-20 16:37:51,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32993 conditions, 4523 events. 2944/4523 cut-off events. For 247765/247765 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24219 event pairs, 1478 based on Foata normal form. 2/4524 useless extension candidates. Maximal degree in co-relation 32888. Up to 4464 conditions per place. [2024-06-20 16:37:52,007 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 273 selfloop transitions, 19 changer transitions 0/295 dead transitions. [2024-06-20 16:37:52,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 295 transitions, 3658 flow [2024-06-20 16:37:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-20 16:37:52,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-06-20 16:37:52,008 INFO L175 Difference]: Start difference. First operand has 218 places, 278 transitions, 2984 flow. Second operand 7 states and 106 transitions. [2024-06-20 16:37:52,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 295 transitions, 3658 flow [2024-06-20 16:37:52,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 295 transitions, 3555 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-20 16:37:52,664 INFO L231 Difference]: Finished difference. Result has 222 places, 280 transitions, 2966 flow [2024-06-20 16:37:52,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2966, PETRI_PLACES=222, PETRI_TRANSITIONS=280} [2024-06-20 16:37:52,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-20 16:37:52,664 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 280 transitions, 2966 flow [2024-06-20 16:37:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:52,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:52,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:37:52,665 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:52,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash -827007172, now seen corresponding path program 3 times [2024-06-20 16:37:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:52,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850114332] [2024-06-20 16:37:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850114332] [2024-06-20 16:37:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850114332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019658481] [2024-06-20 16:37:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:53,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:53,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 280 transitions, 2966 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:53,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:53,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:53,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:54,531 INFO L124 PetriNetUnfolderBase]: 2954/4537 cut-off events. [2024-06-20 16:37:54,532 INFO L125 PetriNetUnfolderBase]: For 257088/257088 co-relation queries the response was YES. [2024-06-20 16:37:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33319 conditions, 4537 events. 2954/4537 cut-off events. For 257088/257088 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24323 event pairs, 1478 based on Foata normal form. 2/4538 useless extension candidates. Maximal degree in co-relation 33212. Up to 4468 conditions per place. [2024-06-20 16:37:54,571 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 274 selfloop transitions, 23 changer transitions 0/300 dead transitions. [2024-06-20 16:37:54,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 300 transitions, 3683 flow [2024-06-20 16:37:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-20 16:37:54,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-20 16:37:54,572 INFO L175 Difference]: Start difference. First operand has 222 places, 280 transitions, 2966 flow. Second operand 8 states and 119 transitions. [2024-06-20 16:37:54,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 300 transitions, 3683 flow [2024-06-20 16:37:55,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 300 transitions, 3614 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-20 16:37:55,100 INFO L231 Difference]: Finished difference. Result has 225 places, 283 transitions, 3010 flow [2024-06-20 16:37:55,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3010, PETRI_PLACES=225, PETRI_TRANSITIONS=283} [2024-06-20 16:37:55,100 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-20 16:37:55,101 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 283 transitions, 3010 flow [2024-06-20 16:37:55,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:55,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:55,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:37:55,101 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1973956636, now seen corresponding path program 2 times [2024-06-20 16:37:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778571781] [2024-06-20 16:37:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:55,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778571781] [2024-06-20 16:37:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778571781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:56,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685863258] [2024-06-20 16:37:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:56,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:56,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:56,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 283 transitions, 3010 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:56,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:56,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:56,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:57,019 INFO L124 PetriNetUnfolderBase]: 2962/4549 cut-off events. [2024-06-20 16:37:57,020 INFO L125 PetriNetUnfolderBase]: For 265761/265761 co-relation queries the response was YES. [2024-06-20 16:37:57,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33563 conditions, 4549 events. 2962/4549 cut-off events. For 265761/265761 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24407 event pairs, 1486 based on Foata normal form. 2/4550 useless extension candidates. Maximal degree in co-relation 33455. Up to 4505 conditions per place. [2024-06-20 16:37:57,067 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 279 selfloop transitions, 14 changer transitions 0/296 dead transitions. [2024-06-20 16:37:57,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 296 transitions, 3672 flow [2024-06-20 16:37:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:37:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:37:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-20 16:37:57,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-20 16:37:57,069 INFO L175 Difference]: Start difference. First operand has 225 places, 283 transitions, 3010 flow. Second operand 7 states and 100 transitions. [2024-06-20 16:37:57,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 296 transitions, 3672 flow [2024-06-20 16:37:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 296 transitions, 3590 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-20 16:37:57,636 INFO L231 Difference]: Finished difference. Result has 226 places, 285 transitions, 3007 flow [2024-06-20 16:37:57,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3007, PETRI_PLACES=226, PETRI_TRANSITIONS=285} [2024-06-20 16:37:57,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-20 16:37:57,637 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 285 transitions, 3007 flow [2024-06-20 16:37:57,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:57,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:37:57,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:37:57,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:37:57,638 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:37:57,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:37:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -599106022, now seen corresponding path program 4 times [2024-06-20 16:37:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:37:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288620390] [2024-06-20 16:37:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:37:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:37:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:37:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:37:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:37:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288620390] [2024-06-20 16:37:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288620390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:37:58,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:37:58,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:37:58,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252557200] [2024-06-20 16:37:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:37:58,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:37:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:37:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:37:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:37:58,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:37:58,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 285 transitions, 3007 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:37:58,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:37:58,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:37:58,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:37:59,438 INFO L124 PetriNetUnfolderBase]: 2966/4555 cut-off events. [2024-06-20 16:37:59,438 INFO L125 PetriNetUnfolderBase]: For 274558/274558 co-relation queries the response was YES. [2024-06-20 16:37:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33712 conditions, 4555 events. 2966/4555 cut-off events. For 274558/274558 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24390 event pairs, 1483 based on Foata normal form. 4/4558 useless extension candidates. Maximal degree in co-relation 33603. Up to 4493 conditions per place. [2024-06-20 16:37:59,484 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 279 selfloop transitions, 20 changer transitions 0/302 dead transitions. [2024-06-20 16:37:59,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 302 transitions, 3722 flow [2024-06-20 16:37:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:37:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:37:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-20 16:37:59,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 16:37:59,485 INFO L175 Difference]: Start difference. First operand has 226 places, 285 transitions, 3007 flow. Second operand 8 states and 114 transitions. [2024-06-20 16:37:59,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 302 transitions, 3722 flow [2024-06-20 16:38:00,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 302 transitions, 3619 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:00,078 INFO L231 Difference]: Finished difference. Result has 229 places, 289 transitions, 3027 flow [2024-06-20 16:38:00,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3027, PETRI_PLACES=229, PETRI_TRANSITIONS=289} [2024-06-20 16:38:00,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-20 16:38:00,078 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 289 transitions, 3027 flow [2024-06-20 16:38:00,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:00,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:00,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:00,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:38:00,079 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:00,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:00,079 INFO L85 PathProgramCache]: Analyzing trace with hash -590825116, now seen corresponding path program 1 times [2024-06-20 16:38:00,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665022701] [2024-06-20 16:38:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:01,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665022701] [2024-06-20 16:38:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665022701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086755910] [2024-06-20 16:38:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:01,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:01,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 289 transitions, 3027 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:01,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:01,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:01,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:02,000 INFO L124 PetriNetUnfolderBase]: 2963/4551 cut-off events. [2024-06-20 16:38:02,000 INFO L125 PetriNetUnfolderBase]: For 277741/277741 co-relation queries the response was YES. [2024-06-20 16:38:02,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34029 conditions, 4551 events. 2963/4551 cut-off events. For 277741/277741 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24384 event pairs, 1484 based on Foata normal form. 1/4551 useless extension candidates. Maximal degree in co-relation 33919. Up to 4496 conditions per place. [2024-06-20 16:38:02,048 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 277 selfloop transitions, 23 changer transitions 0/303 dead transitions. [2024-06-20 16:38:02,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 303 transitions, 3725 flow [2024-06-20 16:38:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-20 16:38:02,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-20 16:38:02,049 INFO L175 Difference]: Start difference. First operand has 229 places, 289 transitions, 3027 flow. Second operand 7 states and 102 transitions. [2024-06-20 16:38:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 303 transitions, 3725 flow [2024-06-20 16:38:02,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 303 transitions, 3645 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:02,807 INFO L231 Difference]: Finished difference. Result has 230 places, 292 transitions, 3067 flow [2024-06-20 16:38:02,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3067, PETRI_PLACES=230, PETRI_TRANSITIONS=292} [2024-06-20 16:38:02,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-20 16:38:02,808 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 292 transitions, 3067 flow [2024-06-20 16:38:02,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:02,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:02,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:38:02,808 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:02,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -590824868, now seen corresponding path program 3 times [2024-06-20 16:38:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:02,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798476272] [2024-06-20 16:38:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798476272] [2024-06-20 16:38:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798476272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131074869] [2024-06-20 16:38:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:03,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:03,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 292 transitions, 3067 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:03,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:03,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:03,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:04,673 INFO L124 PetriNetUnfolderBase]: 2971/4563 cut-off events. [2024-06-20 16:38:04,673 INFO L125 PetriNetUnfolderBase]: For 288322/288322 co-relation queries the response was YES. [2024-06-20 16:38:04,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34566 conditions, 4563 events. 2971/4563 cut-off events. For 288322/288322 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24478 event pairs, 1486 based on Foata normal form. 2/4564 useless extension candidates. Maximal degree in co-relation 34455. Up to 4507 conditions per place. [2024-06-20 16:38:04,722 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 281 selfloop transitions, 21 changer transitions 0/305 dead transitions. [2024-06-20 16:38:04,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 305 transitions, 3755 flow [2024-06-20 16:38:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-20 16:38:04,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857 [2024-06-20 16:38:04,723 INFO L175 Difference]: Start difference. First operand has 230 places, 292 transitions, 3067 flow. Second operand 7 states and 101 transitions. [2024-06-20 16:38:04,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 305 transitions, 3755 flow [2024-06-20 16:38:05,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 305 transitions, 3675 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:05,361 INFO L231 Difference]: Finished difference. Result has 232 places, 294 transitions, 3091 flow [2024-06-20 16:38:05,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3091, PETRI_PLACES=232, PETRI_TRANSITIONS=294} [2024-06-20 16:38:05,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-20 16:38:05,362 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 294 transitions, 3091 flow [2024-06-20 16:38:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:05,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:05,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:05,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:38:05,363 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:05,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:05,363 INFO L85 PathProgramCache]: Analyzing trace with hash -598860068, now seen corresponding path program 4 times [2024-06-20 16:38:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:05,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627669120] [2024-06-20 16:38:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627669120] [2024-06-20 16:38:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627669120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124545621] [2024-06-20 16:38:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:06,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:06,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:06,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:06,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 294 transitions, 3091 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:06,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:06,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:06,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:07,123 INFO L124 PetriNetUnfolderBase]: 2966/4556 cut-off events. [2024-06-20 16:38:07,123 INFO L125 PetriNetUnfolderBase]: For 294734/294734 co-relation queries the response was YES. [2024-06-20 16:38:07,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34668 conditions, 4556 events. 2966/4556 cut-off events. For 294734/294734 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 24366 event pairs, 1487 based on Foata normal form. 2/4557 useless extension candidates. Maximal degree in co-relation 34556. Up to 4507 conditions per place. [2024-06-20 16:38:07,173 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 289 selfloop transitions, 15 changer transitions 0/307 dead transitions. [2024-06-20 16:38:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 307 transitions, 3781 flow [2024-06-20 16:38:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-20 16:38:07,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-20 16:38:07,174 INFO L175 Difference]: Start difference. First operand has 232 places, 294 transitions, 3091 flow. Second operand 7 states and 100 transitions. [2024-06-20 16:38:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 307 transitions, 3781 flow [2024-06-20 16:38:07,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 307 transitions, 3693 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:07,874 INFO L231 Difference]: Finished difference. Result has 234 places, 296 transitions, 3096 flow [2024-06-20 16:38:07,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3096, PETRI_PLACES=234, PETRI_TRANSITIONS=296} [2024-06-20 16:38:07,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-20 16:38:07,875 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 296 transitions, 3096 flow [2024-06-20 16:38:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:07,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:07,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:38:07,876 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:07,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -997869429, now seen corresponding path program 1 times [2024-06-20 16:38:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437537254] [2024-06-20 16:38:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437537254] [2024-06-20 16:38:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437537254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:09,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:09,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137359292] [2024-06-20 16:38:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:09,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:09,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 296 transitions, 3096 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:09,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:09,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:09,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:11,024 INFO L124 PetriNetUnfolderBase]: 3095/4765 cut-off events. [2024-06-20 16:38:11,024 INFO L125 PetriNetUnfolderBase]: For 305566/305576 co-relation queries the response was YES. [2024-06-20 16:38:11,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35586 conditions, 4765 events. 3095/4765 cut-off events. For 305566/305576 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25846 event pairs, 950 based on Foata normal form. 22/4786 useless extension candidates. Maximal degree in co-relation 35473. Up to 4479 conditions per place. [2024-06-20 16:38:11,078 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 316 selfloop transitions, 45 changer transitions 0/364 dead transitions. [2024-06-20 16:38:11,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 364 transitions, 4149 flow [2024-06-20 16:38:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-20 16:38:11,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 16:38:11,079 INFO L175 Difference]: Start difference. First operand has 234 places, 296 transitions, 3096 flow. Second operand 12 states and 190 transitions. [2024-06-20 16:38:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 364 transitions, 4149 flow [2024-06-20 16:38:11,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 364 transitions, 4076 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:11,779 INFO L231 Difference]: Finished difference. Result has 246 places, 312 transitions, 3331 flow [2024-06-20 16:38:11,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3331, PETRI_PLACES=246, PETRI_TRANSITIONS=312} [2024-06-20 16:38:11,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-20 16:38:11,779 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 312 transitions, 3331 flow [2024-06-20 16:38:11,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:11,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:11,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:11,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:38:11,780 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:11,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -86792557, now seen corresponding path program 2 times [2024-06-20 16:38:11,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:11,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512967838] [2024-06-20 16:38:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:11,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:13,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512967838] [2024-06-20 16:38:13,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512967838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:13,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844196859] [2024-06-20 16:38:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:13,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:13,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 312 transitions, 3331 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:13,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:13,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:15,212 INFO L124 PetriNetUnfolderBase]: 3356/5170 cut-off events. [2024-06-20 16:38:15,212 INFO L125 PetriNetUnfolderBase]: For 321134/321138 co-relation queries the response was YES. [2024-06-20 16:38:15,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38499 conditions, 5170 events. 3356/5170 cut-off events. For 321134/321138 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28374 event pairs, 913 based on Foata normal form. 16/5185 useless extension candidates. Maximal degree in co-relation 38380. Up to 4748 conditions per place. [2024-06-20 16:38:15,270 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 327 selfloop transitions, 69 changer transitions 0/399 dead transitions. [2024-06-20 16:38:15,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 399 transitions, 4713 flow [2024-06-20 16:38:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-20 16:38:15,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40208333333333335 [2024-06-20 16:38:15,271 INFO L175 Difference]: Start difference. First operand has 246 places, 312 transitions, 3331 flow. Second operand 12 states and 193 transitions. [2024-06-20 16:38:15,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 399 transitions, 4713 flow [2024-06-20 16:38:15,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 399 transitions, 4633 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:15,961 INFO L231 Difference]: Finished difference. Result has 258 places, 345 transitions, 3876 flow [2024-06-20 16:38:15,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3251, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3876, PETRI_PLACES=258, PETRI_TRANSITIONS=345} [2024-06-20 16:38:15,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-06-20 16:38:15,962 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 345 transitions, 3876 flow [2024-06-20 16:38:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:15,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:15,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:15,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:38:15,962 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:15,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 229218653, now seen corresponding path program 3 times [2024-06-20 16:38:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:15,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585896368] [2024-06-20 16:38:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:17,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:17,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585896368] [2024-06-20 16:38:17,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585896368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:17,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:17,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:17,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13283443] [2024-06-20 16:38:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:17,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:17,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 345 transitions, 3876 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:17,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:17,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:17,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:19,050 INFO L124 PetriNetUnfolderBase]: 3585/5545 cut-off events. [2024-06-20 16:38:19,050 INFO L125 PetriNetUnfolderBase]: For 349876/349880 co-relation queries the response was YES. [2024-06-20 16:38:19,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41284 conditions, 5545 events. 3585/5545 cut-off events. For 349876/349880 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 31053 event pairs, 967 based on Foata normal form. 20/5564 useless extension candidates. Maximal degree in co-relation 41160. Up to 4957 conditions per place. [2024-06-20 16:38:19,106 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 336 selfloop transitions, 74 changer transitions 0/413 dead transitions. [2024-06-20 16:38:19,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 413 transitions, 5110 flow [2024-06-20 16:38:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-20 16:38:19,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 16:38:19,107 INFO L175 Difference]: Start difference. First operand has 258 places, 345 transitions, 3876 flow. Second operand 12 states and 195 transitions. [2024-06-20 16:38:19,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 413 transitions, 5110 flow [2024-06-20 16:38:19,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 413 transitions, 5006 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:19,767 INFO L231 Difference]: Finished difference. Result has 267 places, 360 transitions, 4192 flow [2024-06-20 16:38:19,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4192, PETRI_PLACES=267, PETRI_TRANSITIONS=360} [2024-06-20 16:38:19,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-20 16:38:19,768 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 360 transitions, 4192 flow [2024-06-20 16:38:19,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:19,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:19,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:38:19,768 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:19,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash 103571933, now seen corresponding path program 4 times [2024-06-20 16:38:19,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279612202] [2024-06-20 16:38:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279612202] [2024-06-20 16:38:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279612202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:21,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924372160] [2024-06-20 16:38:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:21,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:21,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:21,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 360 transitions, 4192 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:21,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:21,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:21,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:22,612 INFO L124 PetriNetUnfolderBase]: 3677/5692 cut-off events. [2024-06-20 16:38:22,613 INFO L125 PetriNetUnfolderBase]: For 354726/354730 co-relation queries the response was YES. [2024-06-20 16:38:22,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42545 conditions, 5692 events. 3677/5692 cut-off events. For 354726/354730 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32137 event pairs, 1097 based on Foata normal form. 16/5707 useless extension candidates. Maximal degree in co-relation 42417. Up to 5383 conditions per place. [2024-06-20 16:38:22,681 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 363 selfloop transitions, 52 changer transitions 0/418 dead transitions. [2024-06-20 16:38:22,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 418 transitions, 5294 flow [2024-06-20 16:38:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-20 16:38:22,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 16:38:22,682 INFO L175 Difference]: Start difference. First operand has 267 places, 360 transitions, 4192 flow. Second operand 12 states and 190 transitions. [2024-06-20 16:38:22,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 418 transitions, 5294 flow [2024-06-20 16:38:23,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 418 transitions, 5146 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 16:38:23,690 INFO L231 Difference]: Finished difference. Result has 275 places, 367 transitions, 4267 flow [2024-06-20 16:38:23,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4267, PETRI_PLACES=275, PETRI_TRANSITIONS=367} [2024-06-20 16:38:23,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-20 16:38:23,690 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 367 transitions, 4267 flow [2024-06-20 16:38:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:23,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:23,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:38:23,691 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash 218113523, now seen corresponding path program 5 times [2024-06-20 16:38:23,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:23,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51609689] [2024-06-20 16:38:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:25,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51609689] [2024-06-20 16:38:25,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51609689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:25,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787820646] [2024-06-20 16:38:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:25,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:25,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 367 transitions, 4267 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:25,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:25,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:25,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:26,963 INFO L124 PetriNetUnfolderBase]: 3718/5767 cut-off events. [2024-06-20 16:38:26,963 INFO L125 PetriNetUnfolderBase]: For 368379/368383 co-relation queries the response was YES. [2024-06-20 16:38:27,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43126 conditions, 5767 events. 3718/5767 cut-off events. For 368379/368383 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 32784 event pairs, 1106 based on Foata normal form. 16/5782 useless extension candidates. Maximal degree in co-relation 42994. Up to 5374 conditions per place. [2024-06-20 16:38:27,034 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 348 selfloop transitions, 69 changer transitions 0/420 dead transitions. [2024-06-20 16:38:27,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 420 transitions, 5350 flow [2024-06-20 16:38:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-20 16:38:27,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:38:27,036 INFO L175 Difference]: Start difference. First operand has 275 places, 367 transitions, 4267 flow. Second operand 12 states and 192 transitions. [2024-06-20 16:38:27,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 420 transitions, 5350 flow [2024-06-20 16:38:28,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 420 transitions, 5232 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:28,088 INFO L231 Difference]: Finished difference. Result has 282 places, 369 transitions, 4371 flow [2024-06-20 16:38:28,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4371, PETRI_PLACES=282, PETRI_TRANSITIONS=369} [2024-06-20 16:38:28,088 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-20 16:38:28,089 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 369 transitions, 4371 flow [2024-06-20 16:38:28,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:28,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:28,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:38:28,089 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:28,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1295688499, now seen corresponding path program 6 times [2024-06-20 16:38:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349832465] [2024-06-20 16:38:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349832465] [2024-06-20 16:38:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349832465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:29,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790052873] [2024-06-20 16:38:29,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:29,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:29,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 369 transitions, 4371 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:29,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:29,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:29,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:31,423 INFO L124 PetriNetUnfolderBase]: 3899/6056 cut-off events. [2024-06-20 16:38:31,423 INFO L125 PetriNetUnfolderBase]: For 381245/381255 co-relation queries the response was YES. [2024-06-20 16:38:31,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44725 conditions, 6056 events. 3899/6056 cut-off events. For 381245/381255 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 34576 event pairs, 1061 based on Foata normal form. 22/6077 useless extension candidates. Maximal degree in co-relation 44590. Up to 5630 conditions per place. [2024-06-20 16:38:31,492 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 375 selfloop transitions, 55 changer transitions 0/433 dead transitions. [2024-06-20 16:38:31,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 433 transitions, 5578 flow [2024-06-20 16:38:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:38:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:38:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-20 16:38:31,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 16:38:31,493 INFO L175 Difference]: Start difference. First operand has 282 places, 369 transitions, 4371 flow. Second operand 11 states and 175 transitions. [2024-06-20 16:38:31,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 433 transitions, 5578 flow [2024-06-20 16:38:32,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 433 transitions, 5405 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 16:38:32,274 INFO L231 Difference]: Finished difference. Result has 287 places, 386 transitions, 4546 flow [2024-06-20 16:38:32,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4198, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4546, PETRI_PLACES=287, PETRI_TRANSITIONS=386} [2024-06-20 16:38:32,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-20 16:38:32,275 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 386 transitions, 4546 flow [2024-06-20 16:38:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:32,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:32,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:38:32,275 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:32,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -656342676, now seen corresponding path program 1 times [2024-06-20 16:38:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147529453] [2024-06-20 16:38:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:33,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:33,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147529453] [2024-06-20 16:38:33,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147529453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:33,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:33,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483456362] [2024-06-20 16:38:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:33,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:33,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:38:33,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 386 transitions, 4546 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:33,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:33,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:38:33,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:34,511 INFO L124 PetriNetUnfolderBase]: 3913/6112 cut-off events. [2024-06-20 16:38:34,511 INFO L125 PetriNetUnfolderBase]: For 415352/415385 co-relation queries the response was YES. [2024-06-20 16:38:34,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46187 conditions, 6112 events. 3913/6112 cut-off events. For 415352/415385 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35362 event pairs, 741 based on Foata normal form. 38/6133 useless extension candidates. Maximal degree in co-relation 46048. Up to 5596 conditions per place. [2024-06-20 16:38:34,590 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 324 selfloop transitions, 58 changer transitions 0/413 dead transitions. [2024-06-20 16:38:34,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 413 transitions, 5636 flow [2024-06-20 16:38:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:38:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:38:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-20 16:38:34,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-20 16:38:34,591 INFO L175 Difference]: Start difference. First operand has 287 places, 386 transitions, 4546 flow. Second operand 7 states and 122 transitions. [2024-06-20 16:38:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 413 transitions, 5636 flow [2024-06-20 16:38:35,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 413 transitions, 5513 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:35,614 INFO L231 Difference]: Finished difference. Result has 288 places, 388 transitions, 4592 flow [2024-06-20 16:38:35,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4423, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4592, PETRI_PLACES=288, PETRI_TRANSITIONS=388} [2024-06-20 16:38:35,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-20 16:38:35,615 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 388 transitions, 4592 flow [2024-06-20 16:38:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:35,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:35,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:38:35,615 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:35,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 284889732, now seen corresponding path program 2 times [2024-06-20 16:38:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212993413] [2024-06-20 16:38:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:36,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212993413] [2024-06-20 16:38:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212993413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:36,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743863410] [2024-06-20 16:38:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:36,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:36,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 388 transitions, 4592 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:36,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:36,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:37,857 INFO L124 PetriNetUnfolderBase]: 3971/6170 cut-off events. [2024-06-20 16:38:37,857 INFO L125 PetriNetUnfolderBase]: For 407657/407667 co-relation queries the response was YES. [2024-06-20 16:38:37,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46050 conditions, 6170 events. 3971/6170 cut-off events. For 407657/407667 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35469 event pairs, 943 based on Foata normal form. 22/6188 useless extension candidates. Maximal degree in co-relation 45910. Up to 5887 conditions per place. [2024-06-20 16:38:37,941 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 352 selfloop transitions, 49 changer transitions 0/404 dead transitions. [2024-06-20 16:38:37,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 404 transitions, 5492 flow [2024-06-20 16:38:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:38:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:38:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-20 16:38:37,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-20 16:38:37,942 INFO L175 Difference]: Start difference. First operand has 288 places, 388 transitions, 4592 flow. Second operand 6 states and 101 transitions. [2024-06-20 16:38:37,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 404 transitions, 5492 flow [2024-06-20 16:38:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 404 transitions, 5422 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:38:38,940 INFO L231 Difference]: Finished difference. Result has 291 places, 388 transitions, 4634 flow [2024-06-20 16:38:38,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4634, PETRI_PLACES=291, PETRI_TRANSITIONS=388} [2024-06-20 16:38:38,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-20 16:38:38,940 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 388 transitions, 4634 flow [2024-06-20 16:38:38,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:38,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:38,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:38,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:38:38,941 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:38,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1501310884, now seen corresponding path program 1 times [2024-06-20 16:38:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702201227] [2024-06-20 16:38:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702201227] [2024-06-20 16:38:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702201227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881335958] [2024-06-20 16:38:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:39,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:39,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:39,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:39,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:39,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 388 transitions, 4634 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:39,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:39,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:39,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:41,234 INFO L124 PetriNetUnfolderBase]: 4033/6257 cut-off events. [2024-06-20 16:38:41,234 INFO L125 PetriNetUnfolderBase]: For 413164/413178 co-relation queries the response was YES. [2024-06-20 16:38:41,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47266 conditions, 6257 events. 4033/6257 cut-off events. For 413164/413178 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 36182 event pairs, 1004 based on Foata normal form. 18/6274 useless extension candidates. Maximal degree in co-relation 47124. Up to 5987 conditions per place. [2024-06-20 16:38:41,303 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 365 selfloop transitions, 76 changer transitions 0/444 dead transitions. [2024-06-20 16:38:41,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 444 transitions, 6028 flow [2024-06-20 16:38:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:38:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:38:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-20 16:38:41,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:38:41,304 INFO L175 Difference]: Start difference. First operand has 291 places, 388 transitions, 4634 flow. Second operand 12 states and 184 transitions. [2024-06-20 16:38:41,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 444 transitions, 6028 flow [2024-06-20 16:38:42,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 444 transitions, 5909 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:42,412 INFO L231 Difference]: Finished difference. Result has 301 places, 407 transitions, 4965 flow [2024-06-20 16:38:42,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4965, PETRI_PLACES=301, PETRI_TRANSITIONS=407} [2024-06-20 16:38:42,413 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-20 16:38:42,413 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 407 transitions, 4965 flow [2024-06-20 16:38:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:42,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:42,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:42,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:38:42,413 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -558291442, now seen corresponding path program 2 times [2024-06-20 16:38:42,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:42,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112608988] [2024-06-20 16:38:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:43,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:43,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112608988] [2024-06-20 16:38:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112608988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:43,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:43,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:43,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450202251] [2024-06-20 16:38:43,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:43,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:43,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 407 transitions, 4965 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:43,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:43,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:43,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:44,630 INFO L124 PetriNetUnfolderBase]: 4021/6238 cut-off events. [2024-06-20 16:38:44,630 INFO L125 PetriNetUnfolderBase]: For 420085/420099 co-relation queries the response was YES. [2024-06-20 16:38:44,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48459 conditions, 6238 events. 4021/6238 cut-off events. For 420085/420099 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 36026 event pairs, 1075 based on Foata normal form. 18/6255 useless extension candidates. Maximal degree in co-relation 48313. Up to 6027 conditions per place. [2024-06-20 16:38:44,717 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 367 selfloop transitions, 67 changer transitions 0/437 dead transitions. [2024-06-20 16:38:44,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 437 transitions, 5959 flow [2024-06-20 16:38:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:38:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:38:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-20 16:38:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2024-06-20 16:38:44,718 INFO L175 Difference]: Start difference. First operand has 301 places, 407 transitions, 4965 flow. Second operand 11 states and 166 transitions. [2024-06-20 16:38:44,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 437 transitions, 5959 flow [2024-06-20 16:38:46,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 437 transitions, 5760 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-20 16:38:46,141 INFO L231 Difference]: Finished difference. Result has 307 places, 407 transitions, 4906 flow [2024-06-20 16:38:46,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4766, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4906, PETRI_PLACES=307, PETRI_TRANSITIONS=407} [2024-06-20 16:38:46,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-20 16:38:46,141 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 407 transitions, 4906 flow [2024-06-20 16:38:46,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:46,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:46,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:46,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:38:46,142 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:46,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1573786571, now seen corresponding path program 7 times [2024-06-20 16:38:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800213263] [2024-06-20 16:38:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:47,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800213263] [2024-06-20 16:38:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800213263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:47,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:47,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:38:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745019322] [2024-06-20 16:38:47,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:38:47,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:47,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:38:47,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:38:48,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:48,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 407 transitions, 4906 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:48,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:48,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:48,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:49,615 INFO L124 PetriNetUnfolderBase]: 4062/6308 cut-off events. [2024-06-20 16:38:49,616 INFO L125 PetriNetUnfolderBase]: For 442375/442389 co-relation queries the response was YES. [2024-06-20 16:38:49,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48994 conditions, 6308 events. 4062/6308 cut-off events. For 442375/442389 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 36418 event pairs, 1055 based on Foata normal form. 26/6332 useless extension candidates. Maximal degree in co-relation 48848. Up to 5607 conditions per place. [2024-06-20 16:38:49,696 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 381 selfloop transitions, 65 changer transitions 0/449 dead transitions. [2024-06-20 16:38:49,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 449 transitions, 6030 flow [2024-06-20 16:38:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:38:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:38:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-20 16:38:49,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-06-20 16:38:49,697 INFO L175 Difference]: Start difference. First operand has 307 places, 407 transitions, 4906 flow. Second operand 10 states and 157 transitions. [2024-06-20 16:38:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 449 transitions, 6030 flow [2024-06-20 16:38:51,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 449 transitions, 5890 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 16:38:51,009 INFO L231 Difference]: Finished difference. Result has 309 places, 410 transitions, 5008 flow [2024-06-20 16:38:51,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4766, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5008, PETRI_PLACES=309, PETRI_TRANSITIONS=410} [2024-06-20 16:38:51,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-20 16:38:51,010 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 410 transitions, 5008 flow [2024-06-20 16:38:51,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:51,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:51,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:51,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:38:51,010 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:51,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1433938332, now seen corresponding path program 3 times [2024-06-20 16:38:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194459117] [2024-06-20 16:38:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194459117] [2024-06-20 16:38:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194459117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106504905] [2024-06-20 16:38:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:51,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:51,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:51,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 410 transitions, 5008 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:51,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:51,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:51,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:53,296 INFO L124 PetriNetUnfolderBase]: 4114/6385 cut-off events. [2024-06-20 16:38:53,297 INFO L125 PetriNetUnfolderBase]: For 458460/458478 co-relation queries the response was YES. [2024-06-20 16:38:53,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50521 conditions, 6385 events. 4114/6385 cut-off events. For 458460/458478 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37107 event pairs, 989 based on Foata normal form. 22/6404 useless extension candidates. Maximal degree in co-relation 50373. Up to 6034 conditions per place. [2024-06-20 16:38:53,387 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 351 selfloop transitions, 88 changer transitions 0/442 dead transitions. [2024-06-20 16:38:53,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 442 transitions, 6306 flow [2024-06-20 16:38:53,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:38:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:38:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-20 16:38:53,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-20 16:38:53,388 INFO L175 Difference]: Start difference. First operand has 309 places, 410 transitions, 5008 flow. Second operand 9 states and 143 transitions. [2024-06-20 16:38:53,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 442 transitions, 6306 flow [2024-06-20 16:38:54,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 442 transitions, 6114 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-20 16:38:54,952 INFO L231 Difference]: Finished difference. Result has 311 places, 416 transitions, 5168 flow [2024-06-20 16:38:54,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4818, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5168, PETRI_PLACES=311, PETRI_TRANSITIONS=416} [2024-06-20 16:38:54,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-20 16:38:54,952 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 416 transitions, 5168 flow [2024-06-20 16:38:54,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:54,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:54,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:54,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:38:54,953 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:54,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 591671022, now seen corresponding path program 4 times [2024-06-20 16:38:54,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:54,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943678666] [2024-06-20 16:38:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:38:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:38:55,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:38:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943678666] [2024-06-20 16:38:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943678666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:38:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:38:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:38:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956012267] [2024-06-20 16:38:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:38:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:38:55,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:38:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:38:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:38:55,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:38:55,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 416 transitions, 5168 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:55,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:38:55,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:38:55,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:38:57,374 INFO L124 PetriNetUnfolderBase]: 4134/6411 cut-off events. [2024-06-20 16:38:57,375 INFO L125 PetriNetUnfolderBase]: For 457121/457139 co-relation queries the response was YES. [2024-06-20 16:38:57,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50644 conditions, 6411 events. 4134/6411 cut-off events. For 457121/457139 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 37223 event pairs, 1104 based on Foata normal form. 22/6430 useless extension candidates. Maximal degree in co-relation 50495. Up to 6178 conditions per place. [2024-06-20 16:38:57,452 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 366 selfloop transitions, 72 changer transitions 0/441 dead transitions. [2024-06-20 16:38:57,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 441 transitions, 6234 flow [2024-06-20 16:38:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:38:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:38:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-20 16:38:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-20 16:38:57,453 INFO L175 Difference]: Start difference. First operand has 311 places, 416 transitions, 5168 flow. Second operand 9 states and 136 transitions. [2024-06-20 16:38:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 441 transitions, 6234 flow [2024-06-20 16:38:58,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 441 transitions, 6027 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-20 16:38:58,756 INFO L231 Difference]: Finished difference. Result has 314 places, 421 transitions, 5219 flow [2024-06-20 16:38:58,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5219, PETRI_PLACES=314, PETRI_TRANSITIONS=421} [2024-06-20 16:38:58,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-20 16:38:58,757 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 421 transitions, 5219 flow [2024-06-20 16:38:58,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:38:58,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:38:58,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:38:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:38:58,757 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:38:58,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:38:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash -950385095, now seen corresponding path program 8 times [2024-06-20 16:38:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:38:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063437969] [2024-06-20 16:38:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:38:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:38:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063437969] [2024-06-20 16:39:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063437969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:39:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763377718] [2024-06-20 16:39:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:39:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:39:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:39:00,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:00,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 421 transitions, 5219 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:00,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:00,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:00,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:02,505 INFO L124 PetriNetUnfolderBase]: 4253/6614 cut-off events. [2024-06-20 16:39:02,505 INFO L125 PetriNetUnfolderBase]: For 486673/486681 co-relation queries the response was YES. [2024-06-20 16:39:02,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52275 conditions, 6614 events. 4253/6614 cut-off events. For 486673/486681 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 38785 event pairs, 1064 based on Foata normal form. 20/6632 useless extension candidates. Maximal degree in co-relation 52125. Up to 4993 conditions per place. [2024-06-20 16:39:02,584 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 352 selfloop transitions, 111 changer transitions 0/466 dead transitions. [2024-06-20 16:39:02,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 466 transitions, 6685 flow [2024-06-20 16:39:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:39:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:39:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-20 16:39:02,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-20 16:39:02,585 INFO L175 Difference]: Start difference. First operand has 314 places, 421 transitions, 5219 flow. Second operand 9 states and 155 transitions. [2024-06-20 16:39:02,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 466 transitions, 6685 flow [2024-06-20 16:39:03,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 466 transitions, 6509 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:03,673 INFO L231 Difference]: Finished difference. Result has 318 places, 425 transitions, 5463 flow [2024-06-20 16:39:03,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5463, PETRI_PLACES=318, PETRI_TRANSITIONS=425} [2024-06-20 16:39:03,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-20 16:39:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 425 transitions, 5463 flow [2024-06-20 16:39:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:03,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:03,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:03,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:39:03,676 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:03,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2094969490, now seen corresponding path program 1 times [2024-06-20 16:39:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804032429] [2024-06-20 16:39:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804032429] [2024-06-20 16:39:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804032429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:39:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493796448] [2024-06-20 16:39:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:39:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:39:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:39:05,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:05,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 425 transitions, 5463 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:05,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:05,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:05,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:07,418 INFO L124 PetriNetUnfolderBase]: 4286/6681 cut-off events. [2024-06-20 16:39:07,418 INFO L125 PetriNetUnfolderBase]: For 495997/496005 co-relation queries the response was YES. [2024-06-20 16:39:07,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53113 conditions, 6681 events. 4286/6681 cut-off events. For 495997/496005 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 39368 event pairs, 1187 based on Foata normal form. 24/6703 useless extension candidates. Maximal degree in co-relation 52962. Up to 5541 conditions per place. [2024-06-20 16:39:07,515 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 357 selfloop transitions, 107 changer transitions 0/467 dead transitions. [2024-06-20 16:39:07,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 467 transitions, 6648 flow [2024-06-20 16:39:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-20 16:39:07,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-20 16:39:07,517 INFO L175 Difference]: Start difference. First operand has 318 places, 425 transitions, 5463 flow. Second operand 10 states and 163 transitions. [2024-06-20 16:39:07,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 467 transitions, 6648 flow [2024-06-20 16:39:09,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 467 transitions, 6475 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:09,069 INFO L231 Difference]: Finished difference. Result has 323 places, 426 transitions, 5589 flow [2024-06-20 16:39:09,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5292, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5589, PETRI_PLACES=323, PETRI_TRANSITIONS=426} [2024-06-20 16:39:09,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-20 16:39:09,070 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 426 transitions, 5589 flow [2024-06-20 16:39:09,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:09,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:09,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:09,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:39:09,070 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:09,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2091244623, now seen corresponding path program 9 times [2024-06-20 16:39:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369788688] [2024-06-20 16:39:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:11,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:11,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369788688] [2024-06-20 16:39:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369788688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:11,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:39:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112852391] [2024-06-20 16:39:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:39:11,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:39:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:39:11,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:11,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 426 transitions, 5589 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:11,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:11,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:11,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:12,904 INFO L124 PetriNetUnfolderBase]: 4327/6747 cut-off events. [2024-06-20 16:39:12,904 INFO L125 PetriNetUnfolderBase]: For 500407/500415 co-relation queries the response was YES. [2024-06-20 16:39:12,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54014 conditions, 6747 events. 4327/6747 cut-off events. For 500407/500415 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 39976 event pairs, 1258 based on Foata normal form. 20/6765 useless extension candidates. Maximal degree in co-relation 53861. Up to 6240 conditions per place. [2024-06-20 16:39:12,999 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 402 selfloop transitions, 63 changer transitions 0/468 dead transitions. [2024-06-20 16:39:12,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 468 transitions, 6755 flow [2024-06-20 16:39:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-20 16:39:13,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-06-20 16:39:13,000 INFO L175 Difference]: Start difference. First operand has 323 places, 426 transitions, 5589 flow. Second operand 10 states and 158 transitions. [2024-06-20 16:39:13,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 468 transitions, 6755 flow [2024-06-20 16:39:14,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 468 transitions, 6517 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 16:39:14,699 INFO L231 Difference]: Finished difference. Result has 326 places, 429 transitions, 5579 flow [2024-06-20 16:39:14,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5351, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5579, PETRI_PLACES=326, PETRI_TRANSITIONS=429} [2024-06-20 16:39:14,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-20 16:39:14,700 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 429 transitions, 5579 flow [2024-06-20 16:39:14,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:14,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:14,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:14,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:39:14,700 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:14,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2094963693, now seen corresponding path program 10 times [2024-06-20 16:39:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:14,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095314888] [2024-06-20 16:39:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:14,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095314888] [2024-06-20 16:39:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095314888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:16,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:39:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673798719] [2024-06-20 16:39:16,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:39:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:16,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:39:16,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:39:16,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:16,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 429 transitions, 5579 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:16,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:18,228 INFO L124 PetriNetUnfolderBase]: 4307/6719 cut-off events. [2024-06-20 16:39:18,229 INFO L125 PetriNetUnfolderBase]: For 490505/490513 co-relation queries the response was YES. [2024-06-20 16:39:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52904 conditions, 6719 events. 4307/6719 cut-off events. For 490505/490513 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39827 event pairs, 1224 based on Foata normal form. 20/6737 useless extension candidates. Maximal degree in co-relation 52749. Up to 6018 conditions per place. [2024-06-20 16:39:18,316 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 370 selfloop transitions, 97 changer transitions 0/470 dead transitions. [2024-06-20 16:39:18,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 470 transitions, 6696 flow [2024-06-20 16:39:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-20 16:39:18,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:39:18,317 INFO L175 Difference]: Start difference. First operand has 326 places, 429 transitions, 5579 flow. Second operand 10 states and 160 transitions. [2024-06-20 16:39:18,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 470 transitions, 6696 flow [2024-06-20 16:39:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 470 transitions, 6474 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:19,906 INFO L231 Difference]: Finished difference. Result has 330 places, 431 transitions, 5604 flow [2024-06-20 16:39:19,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5604, PETRI_PLACES=330, PETRI_TRANSITIONS=431} [2024-06-20 16:39:19,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-20 16:39:19,907 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 431 transitions, 5604 flow [2024-06-20 16:39:19,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:19,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:19,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:39:19,907 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:19,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1318647162, now seen corresponding path program 5 times [2024-06-20 16:39:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603965634] [2024-06-20 16:39:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603965634] [2024-06-20 16:39:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603965634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:20,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:20,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244685000] [2024-06-20 16:39:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:20,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:20,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:20,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:20,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 431 transitions, 5604 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:20,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:20,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:20,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:22,333 INFO L124 PetriNetUnfolderBase]: 4413/6858 cut-off events. [2024-06-20 16:39:22,334 INFO L125 PetriNetUnfolderBase]: For 508495/508505 co-relation queries the response was YES. [2024-06-20 16:39:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54662 conditions, 6858 events. 4413/6858 cut-off events. For 508495/508505 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 40424 event pairs, 913 based on Foata normal form. 14/6868 useless extension candidates. Maximal degree in co-relation 54505. Up to 6320 conditions per place. [2024-06-20 16:39:22,430 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 360 selfloop transitions, 107 changer transitions 0/470 dead transitions. [2024-06-20 16:39:22,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 470 transitions, 7246 flow [2024-06-20 16:39:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-20 16:39:22,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-20 16:39:22,431 INFO L175 Difference]: Start difference. First operand has 330 places, 431 transitions, 5604 flow. Second operand 8 states and 135 transitions. [2024-06-20 16:39:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 470 transitions, 7246 flow [2024-06-20 16:39:24,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 470 transitions, 7052 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-20 16:39:24,158 INFO L231 Difference]: Finished difference. Result has 333 places, 444 transitions, 6012 flow [2024-06-20 16:39:24,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5414, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6012, PETRI_PLACES=333, PETRI_TRANSITIONS=444} [2024-06-20 16:39:24,159 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-20 16:39:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 444 transitions, 6012 flow [2024-06-20 16:39:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:24,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:24,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:24,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:39:24,159 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:24,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:24,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1318468416, now seen corresponding path program 1 times [2024-06-20 16:39:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929615419] [2024-06-20 16:39:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929615419] [2024-06-20 16:39:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929615419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:25,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145011421] [2024-06-20 16:39:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:25,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:25,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 444 transitions, 6012 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:25,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:25,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:25,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:26,856 INFO L124 PetriNetUnfolderBase]: 4450/6915 cut-off events. [2024-06-20 16:39:26,856 INFO L125 PetriNetUnfolderBase]: For 512467/512475 co-relation queries the response was YES. [2024-06-20 16:39:26,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55956 conditions, 6915 events. 4450/6915 cut-off events. For 512467/512475 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 41011 event pairs, 1481 based on Foata normal form. 10/6923 useless extension candidates. Maximal degree in co-relation 55796. Up to 6731 conditions per place. [2024-06-20 16:39:26,958 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 411 selfloop transitions, 59 changer transitions 0/473 dead transitions. [2024-06-20 16:39:26,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 473 transitions, 7368 flow [2024-06-20 16:39:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-20 16:39:26,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 16:39:26,960 INFO L175 Difference]: Start difference. First operand has 333 places, 444 transitions, 6012 flow. Second operand 8 states and 127 transitions. [2024-06-20 16:39:26,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 473 transitions, 7368 flow [2024-06-20 16:39:28,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 473 transitions, 7198 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-20 16:39:28,793 INFO L231 Difference]: Finished difference. Result has 339 places, 453 transitions, 6181 flow [2024-06-20 16:39:28,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6181, PETRI_PLACES=339, PETRI_TRANSITIONS=453} [2024-06-20 16:39:28,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-20 16:39:28,794 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 453 transitions, 6181 flow [2024-06-20 16:39:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:28,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:28,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:28,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:39:28,795 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:28,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash 595164102, now seen corresponding path program 6 times [2024-06-20 16:39:28,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:28,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800802240] [2024-06-20 16:39:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:28,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800802240] [2024-06-20 16:39:29,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800802240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:29,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:29,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:29,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082892356] [2024-06-20 16:39:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:29,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:29,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:29,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 453 transitions, 6181 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:29,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:29,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:29,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:31,273 INFO L124 PetriNetUnfolderBase]: 4486/6960 cut-off events. [2024-06-20 16:39:31,274 INFO L125 PetriNetUnfolderBase]: For 533017/533027 co-relation queries the response was YES. [2024-06-20 16:39:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56672 conditions, 6960 events. 4486/6960 cut-off events. For 533017/533027 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 41062 event pairs, 896 based on Foata normal form. 14/6970 useless extension candidates. Maximal degree in co-relation 56509. Up to 6403 conditions per place. [2024-06-20 16:39:31,376 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 361 selfloop transitions, 118 changer transitions 0/482 dead transitions. [2024-06-20 16:39:31,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 482 transitions, 7703 flow [2024-06-20 16:39:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-20 16:39:31,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-20 16:39:31,377 INFO L175 Difference]: Start difference. First operand has 339 places, 453 transitions, 6181 flow. Second operand 8 states and 133 transitions. [2024-06-20 16:39:31,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 482 transitions, 7703 flow [2024-06-20 16:39:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 482 transitions, 7553 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:33,193 INFO L231 Difference]: Finished difference. Result has 342 places, 459 transitions, 6425 flow [2024-06-20 16:39:33,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6035, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6425, PETRI_PLACES=342, PETRI_TRANSITIONS=459} [2024-06-20 16:39:33,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-20 16:39:33,194 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 459 transitions, 6425 flow [2024-06-20 16:39:33,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:33,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:33,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:33,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:39:33,194 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:33,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1318318686, now seen corresponding path program 2 times [2024-06-20 16:39:33,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:33,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970987137] [2024-06-20 16:39:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970987137] [2024-06-20 16:39:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970987137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288576296] [2024-06-20 16:39:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:34,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:34,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:34,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 459 transitions, 6425 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:34,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:34,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:35,994 INFO L124 PetriNetUnfolderBase]: 4496/6979 cut-off events. [2024-06-20 16:39:35,994 INFO L125 PetriNetUnfolderBase]: For 530380/530388 co-relation queries the response was YES. [2024-06-20 16:39:36,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57124 conditions, 6979 events. 4496/6979 cut-off events. For 530380/530388 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41412 event pairs, 1490 based on Foata normal form. 10/6987 useless extension candidates. Maximal degree in co-relation 56960. Up to 6840 conditions per place. [2024-06-20 16:39:36,092 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 429 selfloop transitions, 46 changer transitions 0/478 dead transitions. [2024-06-20 16:39:36,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 478 transitions, 7514 flow [2024-06-20 16:39:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:39:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:39:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-20 16:39:36,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-20 16:39:36,093 INFO L175 Difference]: Start difference. First operand has 342 places, 459 transitions, 6425 flow. Second operand 8 states and 122 transitions. [2024-06-20 16:39:36,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 478 transitions, 7514 flow [2024-06-20 16:39:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 478 transitions, 7324 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:38,044 INFO L231 Difference]: Finished difference. Result has 346 places, 462 transitions, 6402 flow [2024-06-20 16:39:38,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6235, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6402, PETRI_PLACES=346, PETRI_TRANSITIONS=462} [2024-06-20 16:39:38,044 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-20 16:39:38,044 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 462 transitions, 6402 flow [2024-06-20 16:39:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:38,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:38,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:39:38,045 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 602515752, now seen corresponding path program 7 times [2024-06-20 16:39:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688984908] [2024-06-20 16:39:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:38,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:38,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688984908] [2024-06-20 16:39:38,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688984908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:38,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:38,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:38,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063541677] [2024-06-20 16:39:38,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:38,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:38,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:38,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:38,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:38,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:38,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 462 transitions, 6402 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:38,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:38,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:38,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:40,709 INFO L124 PetriNetUnfolderBase]: 4488/6964 cut-off events. [2024-06-20 16:39:40,709 INFO L125 PetriNetUnfolderBase]: For 537338/537348 co-relation queries the response was YES. [2024-06-20 16:39:40,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56557 conditions, 6964 events. 4488/6964 cut-off events. For 537338/537348 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 41115 event pairs, 1033 based on Foata normal form. 14/6974 useless extension candidates. Maximal degree in co-relation 56392. Up to 6640 conditions per place. [2024-06-20 16:39:40,821 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 402 selfloop transitions, 73 changer transitions 0/478 dead transitions. [2024-06-20 16:39:40,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 478 transitions, 7588 flow [2024-06-20 16:39:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:39:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:39:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-20 16:39:40,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-20 16:39:40,822 INFO L175 Difference]: Start difference. First operand has 346 places, 462 transitions, 6402 flow. Second operand 7 states and 113 transitions. [2024-06-20 16:39:40,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 478 transitions, 7588 flow [2024-06-20 16:39:42,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 478 transitions, 7422 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:42,240 INFO L231 Difference]: Finished difference. Result has 347 places, 462 transitions, 6389 flow [2024-06-20 16:39:42,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6389, PETRI_PLACES=347, PETRI_TRANSITIONS=462} [2024-06-20 16:39:42,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-20 16:39:42,241 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 462 transitions, 6389 flow [2024-06-20 16:39:42,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:42,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:42,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:39:42,241 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:42,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1111665246, now seen corresponding path program 3 times [2024-06-20 16:39:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791724533] [2024-06-20 16:39:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791724533] [2024-06-20 16:39:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791724533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:43,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365774492] [2024-06-20 16:39:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:43,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 462 transitions, 6389 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:43,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:43,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:43,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:44,785 INFO L124 PetriNetUnfolderBase]: 4482/6958 cut-off events. [2024-06-20 16:39:44,785 INFO L125 PetriNetUnfolderBase]: For 537619/537627 co-relation queries the response was YES. [2024-06-20 16:39:44,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56456 conditions, 6958 events. 4482/6958 cut-off events. For 537619/537627 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 41238 event pairs, 1504 based on Foata normal form. 10/6966 useless extension candidates. Maximal degree in co-relation 56290. Up to 6860 conditions per place. [2024-06-20 16:39:44,886 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 436 selfloop transitions, 34 changer transitions 0/473 dead transitions. [2024-06-20 16:39:44,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 473 transitions, 7381 flow [2024-06-20 16:39:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:39:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:39:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-20 16:39:44,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:39:44,887 INFO L175 Difference]: Start difference. First operand has 347 places, 462 transitions, 6389 flow. Second operand 7 states and 105 transitions. [2024-06-20 16:39:44,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 473 transitions, 7381 flow [2024-06-20 16:39:46,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 473 transitions, 7225 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-20 16:39:46,564 INFO L231 Difference]: Finished difference. Result has 350 places, 462 transitions, 6311 flow [2024-06-20 16:39:46,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6233, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6311, PETRI_PLACES=350, PETRI_TRANSITIONS=462} [2024-06-20 16:39:46,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-20 16:39:46,564 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 462 transitions, 6311 flow [2024-06-20 16:39:46,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:46,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:46,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:46,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:39:46,565 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:46,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1111785402, now seen corresponding path program 8 times [2024-06-20 16:39:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769914256] [2024-06-20 16:39:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:47,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769914256] [2024-06-20 16:39:47,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769914256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:47,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:47,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414342082] [2024-06-20 16:39:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:47,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:47,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:47,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:47,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:47,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 462 transitions, 6311 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:47,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:47,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:47,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:49,055 INFO L124 PetriNetUnfolderBase]: 4470/6940 cut-off events. [2024-06-20 16:39:49,056 INFO L125 PetriNetUnfolderBase]: For 543342/543352 co-relation queries the response was YES. [2024-06-20 16:39:49,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55933 conditions, 6940 events. 4470/6940 cut-off events. For 543342/543352 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 41003 event pairs, 1041 based on Foata normal form. 14/6950 useless extension candidates. Maximal degree in co-relation 55766. Up to 6719 conditions per place. [2024-06-20 16:39:49,169 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 415 selfloop transitions, 57 changer transitions 0/475 dead transitions. [2024-06-20 16:39:49,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 475 transitions, 7323 flow [2024-06-20 16:39:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:39:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:39:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 16:39:49,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-20 16:39:49,170 INFO L175 Difference]: Start difference. First operand has 350 places, 462 transitions, 6311 flow. Second operand 7 states and 109 transitions. [2024-06-20 16:39:49,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 475 transitions, 7323 flow [2024-06-20 16:39:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 475 transitions, 7213 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-20 16:39:51,173 INFO L231 Difference]: Finished difference. Result has 352 places, 462 transitions, 6321 flow [2024-06-20 16:39:51,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6201, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6321, PETRI_PLACES=352, PETRI_TRANSITIONS=462} [2024-06-20 16:39:51,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-20 16:39:51,174 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 462 transitions, 6321 flow [2024-06-20 16:39:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:51,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:51,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:39:51,174 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:51,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash 602783065, now seen corresponding path program 1 times [2024-06-20 16:39:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442774982] [2024-06-20 16:39:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:51,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:51,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442774982] [2024-06-20 16:39:51,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442774982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:51,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:51,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:39:51,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980440452] [2024-06-20 16:39:51,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:51,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:39:51,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:51,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:39:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:39:52,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:52,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 462 transitions, 6321 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:52,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:52,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:53,634 INFO L124 PetriNetUnfolderBase]: 4463/6932 cut-off events. [2024-06-20 16:39:53,635 INFO L125 PetriNetUnfolderBase]: For 543667/543675 co-relation queries the response was YES. [2024-06-20 16:39:53,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55917 conditions, 6932 events. 4463/6932 cut-off events. For 543667/543675 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 41063 event pairs, 1501 based on Foata normal form. 9/6939 useless extension candidates. Maximal degree in co-relation 55749. Up to 6833 conditions per place. [2024-06-20 16:39:53,738 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 429 selfloop transitions, 41 changer transitions 0/473 dead transitions. [2024-06-20 16:39:53,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 473 transitions, 7365 flow [2024-06-20 16:39:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:39:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:39:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-20 16:39:53,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 16:39:53,739 INFO L175 Difference]: Start difference. First operand has 352 places, 462 transitions, 6321 flow. Second operand 6 states and 93 transitions. [2024-06-20 16:39:53,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 473 transitions, 7365 flow [2024-06-20 16:39:55,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 473 transitions, 7211 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 16:39:55,738 INFO L231 Difference]: Finished difference. Result has 352 places, 464 transitions, 6339 flow [2024-06-20 16:39:55,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6167, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6339, PETRI_PLACES=352, PETRI_TRANSITIONS=464} [2024-06-20 16:39:55,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-20 16:39:55,739 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 464 transitions, 6339 flow [2024-06-20 16:39:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:55,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:39:55,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:39:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:39:55,740 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:39:55,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:39:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -831336113, now seen corresponding path program 11 times [2024-06-20 16:39:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:39:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064389593] [2024-06-20 16:39:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:39:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:39:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:39:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:39:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:39:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064389593] [2024-06-20 16:39:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064389593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:39:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:39:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:39:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117130370] [2024-06-20 16:39:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:39:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:39:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:39:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:39:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:39:57,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:39:57,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 464 transitions, 6339 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:39:57,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:39:57,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:39:57,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:39:59,161 INFO L124 PetriNetUnfolderBase]: 4504/7006 cut-off events. [2024-06-20 16:39:59,161 INFO L125 PetriNetUnfolderBase]: For 576910/576918 co-relation queries the response was YES. [2024-06-20 16:39:59,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56501 conditions, 7006 events. 4504/7006 cut-off events. For 576910/576918 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 41772 event pairs, 1479 based on Foata normal form. 20/7024 useless extension candidates. Maximal degree in co-relation 56332. Up to 6613 conditions per place. [2024-06-20 16:39:59,266 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 446 selfloop transitions, 54 changer transitions 0/503 dead transitions. [2024-06-20 16:39:59,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 503 transitions, 7574 flow [2024-06-20 16:39:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:39:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:39:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-20 16:39:59,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-20 16:39:59,267 INFO L175 Difference]: Start difference. First operand has 352 places, 464 transitions, 6339 flow. Second operand 10 states and 163 transitions. [2024-06-20 16:39:59,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 503 transitions, 7574 flow [2024-06-20 16:40:01,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 503 transitions, 7445 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-20 16:40:01,266 INFO L231 Difference]: Finished difference. Result has 357 places, 465 transitions, 6377 flow [2024-06-20 16:40:01,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6210, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6377, PETRI_PLACES=357, PETRI_TRANSITIONS=465} [2024-06-20 16:40:01,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-20 16:40:01,266 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 465 transitions, 6377 flow [2024-06-20 16:40:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:01,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:40:01,266 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -831480263, now seen corresponding path program 12 times [2024-06-20 16:40:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:01,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991865817] [2024-06-20 16:40:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991865817] [2024-06-20 16:40:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991865817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:40:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492396423] [2024-06-20 16:40:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:40:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:40:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:40:03,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:03,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 465 transitions, 6377 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:03,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:03,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:03,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:04,950 INFO L124 PetriNetUnfolderBase]: 4545/7077 cut-off events. [2024-06-20 16:40:04,950 INFO L125 PetriNetUnfolderBase]: For 584724/584732 co-relation queries the response was YES. [2024-06-20 16:40:05,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57194 conditions, 7077 events. 4545/7077 cut-off events. For 584724/584732 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 42321 event pairs, 1475 based on Foata normal form. 20/7095 useless extension candidates. Maximal degree in co-relation 57025. Up to 6505 conditions per place. [2024-06-20 16:40:05,054 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 448 selfloop transitions, 59 changer transitions 0/510 dead transitions. [2024-06-20 16:40:05,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 510 transitions, 7705 flow [2024-06-20 16:40:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:40:05,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-20 16:40:05,056 INFO L175 Difference]: Start difference. First operand has 357 places, 465 transitions, 6377 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:40:05,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 510 transitions, 7705 flow [2024-06-20 16:40:07,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 510 transitions, 7546 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:07,087 INFO L231 Difference]: Finished difference. Result has 361 places, 468 transitions, 6455 flow [2024-06-20 16:40:07,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6218, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6455, PETRI_PLACES=361, PETRI_TRANSITIONS=468} [2024-06-20 16:40:07,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-20 16:40:07,087 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 468 transitions, 6455 flow [2024-06-20 16:40:07,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:07,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:07,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:07,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:40:07,088 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:07,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:07,088 INFO L85 PathProgramCache]: Analyzing trace with hash -214577413, now seen corresponding path program 13 times [2024-06-20 16:40:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013821822] [2024-06-20 16:40:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013821822] [2024-06-20 16:40:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013821822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:08,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:08,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:40:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104981259] [2024-06-20 16:40:08,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:40:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:40:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:40:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:09,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 468 transitions, 6455 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:09,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:09,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:09,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:11,045 INFO L124 PetriNetUnfolderBase]: 4603/7170 cut-off events. [2024-06-20 16:40:11,046 INFO L125 PetriNetUnfolderBase]: For 601402/601412 co-relation queries the response was YES. [2024-06-20 16:40:11,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57991 conditions, 7170 events. 4603/7170 cut-off events. For 601402/601412 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42810 event pairs, 952 based on Foata normal form. 22/7188 useless extension candidates. Maximal degree in co-relation 57820. Up to 6738 conditions per place. [2024-06-20 16:40:11,159 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 438 selfloop transitions, 68 changer transitions 0/509 dead transitions. [2024-06-20 16:40:11,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 509 transitions, 7705 flow [2024-06-20 16:40:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-20 16:40:11,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-20 16:40:11,161 INFO L175 Difference]: Start difference. First operand has 361 places, 468 transitions, 6455 flow. Second operand 10 states and 161 transitions. [2024-06-20 16:40:11,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 509 transitions, 7705 flow [2024-06-20 16:40:13,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 509 transitions, 7499 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:13,095 INFO L231 Difference]: Finished difference. Result has 365 places, 471 transitions, 6472 flow [2024-06-20 16:40:13,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6472, PETRI_PLACES=365, PETRI_TRANSITIONS=471} [2024-06-20 16:40:13,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-20 16:40:13,096 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 471 transitions, 6472 flow [2024-06-20 16:40:13,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:13,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:13,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:13,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:40:13,096 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1828288297, now seen corresponding path program 14 times [2024-06-20 16:40:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992322416] [2024-06-20 16:40:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:13,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992322416] [2024-06-20 16:40:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992322416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:40:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985484671] [2024-06-20 16:40:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:40:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:40:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:40:15,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:15,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 471 transitions, 6472 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:15,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:15,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:15,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:17,011 INFO L124 PetriNetUnfolderBase]: 4644/7241 cut-off events. [2024-06-20 16:40:17,011 INFO L125 PetriNetUnfolderBase]: For 616487/616497 co-relation queries the response was YES. [2024-06-20 16:40:17,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58374 conditions, 7241 events. 4644/7241 cut-off events. For 616487/616497 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 43469 event pairs, 957 based on Foata normal form. 22/7259 useless extension candidates. Maximal degree in co-relation 58201. Up to 6768 conditions per place. [2024-06-20 16:40:17,112 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 438 selfloop transitions, 71 changer transitions 0/512 dead transitions. [2024-06-20 16:40:17,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 512 transitions, 7743 flow [2024-06-20 16:40:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-20 16:40:17,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-20 16:40:17,114 INFO L175 Difference]: Start difference. First operand has 365 places, 471 transitions, 6472 flow. Second operand 10 states and 162 transitions. [2024-06-20 16:40:17,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 512 transitions, 7743 flow [2024-06-20 16:40:19,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 512 transitions, 7556 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:19,176 INFO L231 Difference]: Finished difference. Result has 369 places, 474 transitions, 6536 flow [2024-06-20 16:40:19,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6285, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6536, PETRI_PLACES=369, PETRI_TRANSITIONS=474} [2024-06-20 16:40:19,176 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-20 16:40:19,176 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 474 transitions, 6536 flow [2024-06-20 16:40:19,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:19,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:19,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:19,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:40:19,177 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:19,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash -632034323, now seen corresponding path program 15 times [2024-06-20 16:40:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277269396] [2024-06-20 16:40:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277269396] [2024-06-20 16:40:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277269396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:40:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957415087] [2024-06-20 16:40:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:40:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:40:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:40:20,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:20,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 474 transitions, 6536 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:20,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:20,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:20,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:22,638 INFO L124 PetriNetUnfolderBase]: 4624/7214 cut-off events. [2024-06-20 16:40:22,638 INFO L125 PetriNetUnfolderBase]: For 603032/603040 co-relation queries the response was YES. [2024-06-20 16:40:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57415 conditions, 7214 events. 4624/7214 cut-off events. For 603032/603040 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 43474 event pairs, 1506 based on Foata normal form. 20/7232 useless extension candidates. Maximal degree in co-relation 57240. Up to 6701 conditions per place. [2024-06-20 16:40:22,755 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 459 selfloop transitions, 54 changer transitions 0/516 dead transitions. [2024-06-20 16:40:22,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 516 transitions, 7784 flow [2024-06-20 16:40:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-20 16:40:22,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-20 16:40:22,756 INFO L175 Difference]: Start difference. First operand has 369 places, 474 transitions, 6536 flow. Second operand 10 states and 167 transitions. [2024-06-20 16:40:22,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 516 transitions, 7784 flow [2024-06-20 16:40:25,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 516 transitions, 7538 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-20 16:40:25,039 INFO L231 Difference]: Finished difference. Result has 372 places, 474 transitions, 6404 flow [2024-06-20 16:40:25,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6290, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6404, PETRI_PLACES=372, PETRI_TRANSITIONS=474} [2024-06-20 16:40:25,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 331 predicate places. [2024-06-20 16:40:25,040 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 474 transitions, 6404 flow [2024-06-20 16:40:25,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:25,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:25,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:40:25,040 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:25,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1831863217, now seen corresponding path program 16 times [2024-06-20 16:40:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751482420] [2024-06-20 16:40:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:26,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:26,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751482420] [2024-06-20 16:40:26,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751482420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:26,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:26,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:40:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288537460] [2024-06-20 16:40:26,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:40:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:40:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:40:26,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:26,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 474 transitions, 6404 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:26,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:26,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:26,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:28,703 INFO L124 PetriNetUnfolderBase]: 4604/7177 cut-off events. [2024-06-20 16:40:28,703 INFO L125 PetriNetUnfolderBase]: For 581679/581689 co-relation queries the response was YES. [2024-06-20 16:40:28,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55903 conditions, 7177 events. 4604/7177 cut-off events. For 581679/581689 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 42960 event pairs, 929 based on Foata normal form. 22/7195 useless extension candidates. Maximal degree in co-relation 55727. Up to 6750 conditions per place. [2024-06-20 16:40:28,816 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 440 selfloop transitions, 65 changer transitions 0/508 dead transitions. [2024-06-20 16:40:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 508 transitions, 7488 flow [2024-06-20 16:40:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-20 16:40:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 16:40:28,817 INFO L175 Difference]: Start difference. First operand has 372 places, 474 transitions, 6404 flow. Second operand 9 states and 145 transitions. [2024-06-20 16:40:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 508 transitions, 7488 flow [2024-06-20 16:40:31,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 508 transitions, 7352 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:31,565 INFO L231 Difference]: Finished difference. Result has 373 places, 475 transitions, 6346 flow [2024-06-20 16:40:31,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6178, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6346, PETRI_PLACES=373, PETRI_TRANSITIONS=475} [2024-06-20 16:40:31,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-20 16:40:31,566 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 475 transitions, 6346 flow [2024-06-20 16:40:31,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:31,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:31,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:40:31,566 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:31,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1022942544, now seen corresponding path program 4 times [2024-06-20 16:40:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:31,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592005840] [2024-06-20 16:40:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:32,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:32,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592005840] [2024-06-20 16:40:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592005840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661027059] [2024-06-20 16:40:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:32,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:32,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:32,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 475 transitions, 6346 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:32,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:32,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:32,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:34,445 INFO L124 PetriNetUnfolderBase]: 4667/7272 cut-off events. [2024-06-20 16:40:34,445 INFO L125 PetriNetUnfolderBase]: For 578163/578171 co-relation queries the response was YES. [2024-06-20 16:40:34,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56596 conditions, 7272 events. 4667/7272 cut-off events. For 578163/578171 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43753 event pairs, 1542 based on Foata normal form. 10/7280 useless extension candidates. Maximal degree in co-relation 56418. Up to 7050 conditions per place. [2024-06-20 16:40:34,546 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 460 selfloop transitions, 49 changer transitions 0/512 dead transitions. [2024-06-20 16:40:34,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 512 transitions, 7677 flow [2024-06-20 16:40:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:40:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:40:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-20 16:40:34,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:40:34,547 INFO L175 Difference]: Start difference. First operand has 373 places, 475 transitions, 6346 flow. Second operand 8 states and 128 transitions. [2024-06-20 16:40:34,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 512 transitions, 7677 flow [2024-06-20 16:40:37,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 512 transitions, 7366 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-20 16:40:37,258 INFO L231 Difference]: Finished difference. Result has 374 places, 489 transitions, 6363 flow [2024-06-20 16:40:37,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6363, PETRI_PLACES=374, PETRI_TRANSITIONS=489} [2024-06-20 16:40:37,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-20 16:40:37,259 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 489 transitions, 6363 flow [2024-06-20 16:40:37,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:37,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:37,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:37,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:40:37,259 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:37,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -634474590, now seen corresponding path program 5 times [2024-06-20 16:40:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:37,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640065429] [2024-06-20 16:40:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:38,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:38,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640065429] [2024-06-20 16:40:38,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640065429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:38,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:38,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64258920] [2024-06-20 16:40:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:38,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:38,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 489 transitions, 6363 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:38,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:38,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:40,062 INFO L124 PetriNetUnfolderBase]: 4701/7319 cut-off events. [2024-06-20 16:40:40,062 INFO L125 PetriNetUnfolderBase]: For 596744/596752 co-relation queries the response was YES. [2024-06-20 16:40:40,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56888 conditions, 7319 events. 4701/7319 cut-off events. For 596744/596752 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 44041 event pairs, 1525 based on Foata normal form. 10/7327 useless extension candidates. Maximal degree in co-relation 56710. Up to 7022 conditions per place. [2024-06-20 16:40:40,170 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 432 selfloop transitions, 85 changer transitions 0/520 dead transitions. [2024-06-20 16:40:40,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 520 transitions, 8115 flow [2024-06-20 16:40:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:40:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:40:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-20 16:40:40,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:40:40,171 INFO L175 Difference]: Start difference. First operand has 374 places, 489 transitions, 6363 flow. Second operand 8 states and 128 transitions. [2024-06-20 16:40:40,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 520 transitions, 8115 flow [2024-06-20 16:40:42,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 520 transitions, 7931 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-20 16:40:42,808 INFO L231 Difference]: Finished difference. Result has 378 places, 498 transitions, 6649 flow [2024-06-20 16:40:42,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6191, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6649, PETRI_PLACES=378, PETRI_TRANSITIONS=498} [2024-06-20 16:40:42,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-20 16:40:42,808 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 498 transitions, 6649 flow [2024-06-20 16:40:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:42,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:42,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:42,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:40:42,809 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:42,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 794862648, now seen corresponding path program 9 times [2024-06-20 16:40:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:42,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144070712] [2024-06-20 16:40:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144070712] [2024-06-20 16:40:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144070712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:43,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380132085] [2024-06-20 16:40:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:43,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:43,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 498 transitions, 6649 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:43,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:43,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:43,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:45,522 INFO L124 PetriNetUnfolderBase]: 4753/7386 cut-off events. [2024-06-20 16:40:45,522 INFO L125 PetriNetUnfolderBase]: For 595119/595125 co-relation queries the response was YES. [2024-06-20 16:40:45,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57859 conditions, 7386 events. 4753/7386 cut-off events. For 595119/595125 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 44269 event pairs, 966 based on Foata normal form. 10/7392 useless extension candidates. Maximal degree in co-relation 57680. Up to 7051 conditions per place. [2024-06-20 16:40:45,629 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 462 selfloop transitions, 68 changer transitions 0/533 dead transitions. [2024-06-20 16:40:45,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 533 transitions, 8185 flow [2024-06-20 16:40:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:40:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:40:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-20 16:40:45,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-06-20 16:40:45,630 INFO L175 Difference]: Start difference. First operand has 378 places, 498 transitions, 6649 flow. Second operand 10 states and 153 transitions. [2024-06-20 16:40:45,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 533 transitions, 8185 flow [2024-06-20 16:40:48,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 533 transitions, 7955 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-20 16:40:48,328 INFO L231 Difference]: Finished difference. Result has 383 places, 504 transitions, 6739 flow [2024-06-20 16:40:48,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6739, PETRI_PLACES=383, PETRI_TRANSITIONS=504} [2024-06-20 16:40:48,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-20 16:40:48,329 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 504 transitions, 6739 flow [2024-06-20 16:40:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:48,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:48,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:40:48,329 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:48,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash 795041394, now seen corresponding path program 6 times [2024-06-20 16:40:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43416133] [2024-06-20 16:40:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43416133] [2024-06-20 16:40:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43416133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376941982] [2024-06-20 16:40:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:49,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:49,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 504 transitions, 6739 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:49,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:49,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:49,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:51,159 INFO L124 PetriNetUnfolderBase]: 4763/7405 cut-off events. [2024-06-20 16:40:51,159 INFO L125 PetriNetUnfolderBase]: For 576880/576888 co-relation queries the response was YES. [2024-06-20 16:40:51,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57922 conditions, 7405 events. 4763/7405 cut-off events. For 576880/576888 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 44605 event pairs, 1557 based on Foata normal form. 10/7413 useless extension candidates. Maximal degree in co-relation 57743. Up to 7278 conditions per place. [2024-06-20 16:40:51,265 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 494 selfloop transitions, 35 changer transitions 0/532 dead transitions. [2024-06-20 16:40:51,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 532 transitions, 8148 flow [2024-06-20 16:40:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:40:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:40:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-20 16:40:51,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-20 16:40:51,267 INFO L175 Difference]: Start difference. First operand has 383 places, 504 transitions, 6739 flow. Second operand 9 states and 136 transitions. [2024-06-20 16:40:51,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 532 transitions, 8148 flow [2024-06-20 16:40:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 532 transitions, 7874 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:53,556 INFO L231 Difference]: Finished difference. Result has 387 places, 508 transitions, 6636 flow [2024-06-20 16:40:53,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6636, PETRI_PLACES=387, PETRI_TRANSITIONS=508} [2024-06-20 16:40:53,556 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-20 16:40:53,556 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 508 transitions, 6636 flow [2024-06-20 16:40:53,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:53,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:53,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:53,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:40:53,556 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:53,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash -862584246, now seen corresponding path program 10 times [2024-06-20 16:40:53,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:53,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958513941] [2024-06-20 16:40:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958513941] [2024-06-20 16:40:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958513941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:54,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107106739] [2024-06-20 16:40:54,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:54,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:54,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 508 transitions, 6636 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:54,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:54,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:40:56,190 INFO L124 PetriNetUnfolderBase]: 4751/7384 cut-off events. [2024-06-20 16:40:56,190 INFO L125 PetriNetUnfolderBase]: For 577667/577673 co-relation queries the response was YES. [2024-06-20 16:40:56,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57272 conditions, 7384 events. 4751/7384 cut-off events. For 577667/577673 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44270 event pairs, 966 based on Foata normal form. 10/7390 useless extension candidates. Maximal degree in co-relation 57091. Up to 7057 conditions per place. [2024-06-20 16:40:56,295 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 460 selfloop transitions, 67 changer transitions 0/530 dead transitions. [2024-06-20 16:40:56,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 530 transitions, 7804 flow [2024-06-20 16:40:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:40:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:40:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-20 16:40:56,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:40:56,297 INFO L175 Difference]: Start difference. First operand has 387 places, 508 transitions, 6636 flow. Second operand 8 states and 128 transitions. [2024-06-20 16:40:56,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 530 transitions, 7804 flow [2024-06-20 16:40:58,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 530 transitions, 7664 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-20 16:40:58,914 INFO L231 Difference]: Finished difference. Result has 389 places, 508 transitions, 6636 flow [2024-06-20 16:40:58,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6636, PETRI_PLACES=389, PETRI_TRANSITIONS=508} [2024-06-20 16:40:58,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-20 16:40:58,915 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 508 transitions, 6636 flow [2024-06-20 16:40:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:58,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:40:58,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:40:58,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:40:58,916 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:40:58,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:40:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash -862584060, now seen corresponding path program 7 times [2024-06-20 16:40:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:40:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968951212] [2024-06-20 16:40:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:40:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:40:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:40:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:40:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:40:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968951212] [2024-06-20 16:40:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968951212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:40:59,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:40:59,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:40:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516629809] [2024-06-20 16:40:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:40:59,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:40:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:40:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:40:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:40:59,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:40:59,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 508 transitions, 6636 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:40:59,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:40:59,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:40:59,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:01,712 INFO L124 PetriNetUnfolderBase]: 4745/7381 cut-off events. [2024-06-20 16:41:01,712 INFO L125 PetriNetUnfolderBase]: For 578137/578145 co-relation queries the response was YES. [2024-06-20 16:41:01,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57199 conditions, 7381 events. 4745/7381 cut-off events. For 578137/578145 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 44473 event pairs, 1553 based on Foata normal form. 10/7389 useless extension candidates. Maximal degree in co-relation 57017. Up to 7272 conditions per place. [2024-06-20 16:41:01,823 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 494 selfloop transitions, 29 changer transitions 0/526 dead transitions. [2024-06-20 16:41:01,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 526 transitions, 7764 flow [2024-06-20 16:41:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-20 16:41:01,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-20 16:41:01,824 INFO L175 Difference]: Start difference. First operand has 389 places, 508 transitions, 6636 flow. Second operand 8 states and 119 transitions. [2024-06-20 16:41:01,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 526 transitions, 7764 flow [2024-06-20 16:41:04,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 526 transitions, 7590 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-20 16:41:04,437 INFO L231 Difference]: Finished difference. Result has 390 places, 508 transitions, 6526 flow [2024-06-20 16:41:04,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6462, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6526, PETRI_PLACES=390, PETRI_TRANSITIONS=508} [2024-06-20 16:41:04,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-20 16:41:04,438 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 508 transitions, 6526 flow [2024-06-20 16:41:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:04,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:04,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:04,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:41:04,438 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:04,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -478799100, now seen corresponding path program 8 times [2024-06-20 16:41:04,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016415086] [2024-06-20 16:41:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016415086] [2024-06-20 16:41:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016415086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820554800] [2024-06-20 16:41:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:05,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 508 transitions, 6526 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:07,235 INFO L124 PetriNetUnfolderBase]: 4755/7395 cut-off events. [2024-06-20 16:41:07,235 INFO L125 PetriNetUnfolderBase]: For 590126/590134 co-relation queries the response was YES. [2024-06-20 16:41:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57254 conditions, 7395 events. 4755/7395 cut-off events. For 590126/590134 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 44578 event pairs, 1526 based on Foata normal form. 10/7403 useless extension candidates. Maximal degree in co-relation 57071. Up to 7224 conditions per place. [2024-06-20 16:41:07,343 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 471 selfloop transitions, 54 changer transitions 0/528 dead transitions. [2024-06-20 16:41:07,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 528 transitions, 7742 flow [2024-06-20 16:41:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-20 16:41:07,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-20 16:41:07,344 INFO L175 Difference]: Start difference. First operand has 390 places, 508 transitions, 6526 flow. Second operand 8 states and 121 transitions. [2024-06-20 16:41:07,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 528 transitions, 7742 flow [2024-06-20 16:41:09,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 528 transitions, 7684 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:41:09,794 INFO L231 Difference]: Finished difference. Result has 392 places, 511 transitions, 6662 flow [2024-06-20 16:41:09,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6468, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6662, PETRI_PLACES=392, PETRI_TRANSITIONS=511} [2024-06-20 16:41:09,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-20 16:41:09,795 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 511 transitions, 6662 flow [2024-06-20 16:41:09,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:09,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:09,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:09,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:41:09,795 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:09,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -478799286, now seen corresponding path program 11 times [2024-06-20 16:41:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816637409] [2024-06-20 16:41:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:09,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:10,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816637409] [2024-06-20 16:41:10,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816637409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:10,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:10,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:10,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020790381] [2024-06-20 16:41:10,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:10,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:10,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:10,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 511 transitions, 6662 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:10,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:10,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:10,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:12,338 INFO L124 PetriNetUnfolderBase]: 4775/7418 cut-off events. [2024-06-20 16:41:12,338 INFO L125 PetriNetUnfolderBase]: For 610322/610328 co-relation queries the response was YES. [2024-06-20 16:41:12,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57812 conditions, 7418 events. 4775/7418 cut-off events. For 610322/610328 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 44519 event pairs, 950 based on Foata normal form. 10/7424 useless extension candidates. Maximal degree in co-relation 57628. Up to 6707 conditions per place. [2024-06-20 16:41:12,448 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 404 selfloop transitions, 135 changer transitions 0/542 dead transitions. [2024-06-20 16:41:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 542 transitions, 8422 flow [2024-06-20 16:41:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-20 16:41:12,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-20 16:41:12,449 INFO L175 Difference]: Start difference. First operand has 392 places, 511 transitions, 6662 flow. Second operand 8 states and 131 transitions. [2024-06-20 16:41:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 542 transitions, 8422 flow [2024-06-20 16:41:15,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 542 transitions, 8256 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 16:41:15,377 INFO L231 Difference]: Finished difference. Result has 394 places, 517 transitions, 6954 flow [2024-06-20 16:41:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6954, PETRI_PLACES=394, PETRI_TRANSITIONS=517} [2024-06-20 16:41:15,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-20 16:41:15,377 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 517 transitions, 6954 flow [2024-06-20 16:41:15,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:15,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:15,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:41:15,377 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:15,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 132573376, now seen corresponding path program 9 times [2024-06-20 16:41:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:15,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132031832] [2024-06-20 16:41:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132031832] [2024-06-20 16:41:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132031832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:16,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:16,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:16,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7474204] [2024-06-20 16:41:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:16,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:16,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:16,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:16,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 517 transitions, 6954 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:16,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:18,122 INFO L124 PetriNetUnfolderBase]: 4785/7437 cut-off events. [2024-06-20 16:41:18,122 INFO L125 PetriNetUnfolderBase]: For 622845/622853 co-relation queries the response was YES. [2024-06-20 16:41:18,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58815 conditions, 7437 events. 4785/7437 cut-off events. For 622845/622853 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 44785 event pairs, 1538 based on Foata normal form. 10/7445 useless extension candidates. Maximal degree in co-relation 58630. Up to 7234 conditions per place. [2024-06-20 16:41:18,229 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 469 selfloop transitions, 65 changer transitions 0/537 dead transitions. [2024-06-20 16:41:18,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 537 transitions, 8194 flow [2024-06-20 16:41:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-20 16:41:18,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-20 16:41:18,230 INFO L175 Difference]: Start difference. First operand has 394 places, 517 transitions, 6954 flow. Second operand 8 states and 122 transitions. [2024-06-20 16:41:18,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 537 transitions, 8194 flow [2024-06-20 16:41:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 537 transitions, 8011 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-20 16:41:20,967 INFO L231 Difference]: Finished difference. Result has 398 places, 520 transitions, 6993 flow [2024-06-20 16:41:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6993, PETRI_PLACES=398, PETRI_TRANSITIONS=520} [2024-06-20 16:41:20,967 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-20 16:41:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 520 transitions, 6993 flow [2024-06-20 16:41:20,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:20,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:20,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:20,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:41:20,967 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 885401414, now seen corresponding path program 12 times [2024-06-20 16:41:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738170738] [2024-06-20 16:41:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:21,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738170738] [2024-06-20 16:41:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738170738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:21,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:21,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192470824] [2024-06-20 16:41:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:21,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:21,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:21,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 520 transitions, 6993 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:21,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:21,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:21,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:23,658 INFO L124 PetriNetUnfolderBase]: 4810/7467 cut-off events. [2024-06-20 16:41:23,658 INFO L125 PetriNetUnfolderBase]: For 635067/635073 co-relation queries the response was YES. [2024-06-20 16:41:23,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58610 conditions, 7467 events. 4810/7467 cut-off events. For 635067/635073 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 44832 event pairs, 1093 based on Foata normal form. 10/7473 useless extension candidates. Maximal degree in co-relation 58423. Up to 7219 conditions per place. [2024-06-20 16:41:23,764 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 477 selfloop transitions, 63 changer transitions 0/543 dead transitions. [2024-06-20 16:41:23,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 543 transitions, 8283 flow [2024-06-20 16:41:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-20 16:41:23,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-20 16:41:23,765 INFO L175 Difference]: Start difference. First operand has 398 places, 520 transitions, 6993 flow. Second operand 8 states and 122 transitions. [2024-06-20 16:41:23,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 543 transitions, 8283 flow [2024-06-20 16:41:26,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 543 transitions, 8089 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-20 16:41:26,729 INFO L231 Difference]: Finished difference. Result has 401 places, 527 transitions, 7067 flow [2024-06-20 16:41:26,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6799, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7067, PETRI_PLACES=401, PETRI_TRANSITIONS=527} [2024-06-20 16:41:26,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-20 16:41:26,730 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 527 transitions, 7067 flow [2024-06-20 16:41:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:26,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:26,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:41:26,730 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:26,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1135716519, now seen corresponding path program 2 times [2024-06-20 16:41:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:26,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458573448] [2024-06-20 16:41:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458573448] [2024-06-20 16:41:27,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458573448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:27,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:27,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:27,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291770458] [2024-06-20 16:41:27,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:27,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:27,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:27,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 527 transitions, 7067 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:27,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:27,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:27,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:29,510 INFO L124 PetriNetUnfolderBase]: 4815/7476 cut-off events. [2024-06-20 16:41:29,511 INFO L125 PetriNetUnfolderBase]: For 641292/641300 co-relation queries the response was YES. [2024-06-20 16:41:29,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59411 conditions, 7476 events. 4815/7476 cut-off events. For 641292/641300 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 45024 event pairs, 1551 based on Foata normal form. 9/7483 useless extension candidates. Maximal degree in co-relation 59222. Up to 7348 conditions per place. [2024-06-20 16:41:29,627 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 486 selfloop transitions, 56 changer transitions 0/545 dead transitions. [2024-06-20 16:41:29,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 545 transitions, 8591 flow [2024-06-20 16:41:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:41:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:41:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-20 16:41:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:41:29,628 INFO L175 Difference]: Start difference. First operand has 401 places, 527 transitions, 7067 flow. Second operand 7 states and 105 transitions. [2024-06-20 16:41:29,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 545 transitions, 8591 flow [2024-06-20 16:41:33,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 545 transitions, 8393 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-20 16:41:33,180 INFO L231 Difference]: Finished difference. Result has 404 places, 533 transitions, 7205 flow [2024-06-20 16:41:33,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7205, PETRI_PLACES=404, PETRI_TRANSITIONS=533} [2024-06-20 16:41:33,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-20 16:41:33,180 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 533 transitions, 7205 flow [2024-06-20 16:41:33,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:33,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:33,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:41:33,180 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:33,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1392425566, now seen corresponding path program 10 times [2024-06-20 16:41:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861563755] [2024-06-20 16:41:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861563755] [2024-06-20 16:41:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861563755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173603796] [2024-06-20 16:41:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:34,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:34,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:34,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 533 transitions, 7205 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:34,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:34,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:35,903 INFO L124 PetriNetUnfolderBase]: 4825/7490 cut-off events. [2024-06-20 16:41:35,903 INFO L125 PetriNetUnfolderBase]: For 657958/657966 co-relation queries the response was YES. [2024-06-20 16:41:35,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59552 conditions, 7490 events. 4825/7490 cut-off events. For 657958/657966 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 45142 event pairs, 1548 based on Foata normal form. 10/7498 useless extension candidates. Maximal degree in co-relation 59362. Up to 7352 conditions per place. [2024-06-20 16:41:36,027 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 500 selfloop transitions, 47 changer transitions 0/550 dead transitions. [2024-06-20 16:41:36,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 550 transitions, 8635 flow [2024-06-20 16:41:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-20 16:41:36,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-20 16:41:36,028 INFO L175 Difference]: Start difference. First operand has 404 places, 533 transitions, 7205 flow. Second operand 8 states and 117 transitions. [2024-06-20 16:41:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 550 transitions, 8635 flow [2024-06-20 16:41:39,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 550 transitions, 8498 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-20 16:41:39,671 INFO L231 Difference]: Finished difference. Result has 408 places, 536 transitions, 7256 flow [2024-06-20 16:41:39,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7256, PETRI_PLACES=408, PETRI_TRANSITIONS=536} [2024-06-20 16:41:39,671 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-20 16:41:39,671 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 536 transitions, 7256 flow [2024-06-20 16:41:39,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:39,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:39,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:39,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:41:39,672 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:39,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1569794236, now seen corresponding path program 11 times [2024-06-20 16:41:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904408002] [2024-06-20 16:41:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:39,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:40,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904408002] [2024-06-20 16:41:40,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904408002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:40,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:40,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:40,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384453881] [2024-06-20 16:41:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:40,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:40,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:40,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 536 transitions, 7256 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:40,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:40,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:40,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:42,511 INFO L124 PetriNetUnfolderBase]: 4835/7504 cut-off events. [2024-06-20 16:41:42,511 INFO L125 PetriNetUnfolderBase]: For 659059/659067 co-relation queries the response was YES. [2024-06-20 16:41:42,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59773 conditions, 7504 events. 4835/7504 cut-off events. For 659059/659067 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 45194 event pairs, 1555 based on Foata normal form. 10/7512 useless extension candidates. Maximal degree in co-relation 59582. Up to 7419 conditions per place. [2024-06-20 16:41:42,635 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 517 selfloop transitions, 31 changer transitions 0/551 dead transitions. [2024-06-20 16:41:42,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 551 transitions, 8502 flow [2024-06-20 16:41:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-20 16:41:42,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-20 16:41:42,636 INFO L175 Difference]: Start difference. First operand has 408 places, 536 transitions, 7256 flow. Second operand 8 states and 113 transitions. [2024-06-20 16:41:42,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 551 transitions, 8502 flow [2024-06-20 16:41:45,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 551 transitions, 8282 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-20 16:41:45,746 INFO L231 Difference]: Finished difference. Result has 410 places, 539 transitions, 7202 flow [2024-06-20 16:41:45,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7202, PETRI_PLACES=410, PETRI_TRANSITIONS=539} [2024-06-20 16:41:45,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-20 16:41:45,746 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 539 transitions, 7202 flow [2024-06-20 16:41:45,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:45,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:45,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:41:45,747 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:45,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1392662902, now seen corresponding path program 13 times [2024-06-20 16:41:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658131144] [2024-06-20 16:41:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658131144] [2024-06-20 16:41:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658131144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:46,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:46,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:46,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634562898] [2024-06-20 16:41:46,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:46,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:46,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:46,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 539 transitions, 7202 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:46,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:46,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:46,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:48,305 INFO L124 PetriNetUnfolderBase]: 4855/7530 cut-off events. [2024-06-20 16:41:48,305 INFO L125 PetriNetUnfolderBase]: For 680005/680011 co-relation queries the response was YES. [2024-06-20 16:41:48,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60058 conditions, 7530 events. 4855/7530 cut-off events. For 680005/680011 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 45187 event pairs, 1084 based on Foata normal form. 10/7536 useless extension candidates. Maximal degree in co-relation 59866. Up to 7102 conditions per place. [2024-06-20 16:41:48,415 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 459 selfloop transitions, 98 changer transitions 0/560 dead transitions. [2024-06-20 16:41:48,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 560 transitions, 8712 flow [2024-06-20 16:41:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-20 16:41:48,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 16:41:48,416 INFO L175 Difference]: Start difference. First operand has 410 places, 539 transitions, 7202 flow. Second operand 8 states and 124 transitions. [2024-06-20 16:41:48,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 560 transitions, 8712 flow [2024-06-20 16:41:51,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 560 transitions, 8588 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-20 16:41:51,676 INFO L231 Difference]: Finished difference. Result has 412 places, 542 transitions, 7381 flow [2024-06-20 16:41:51,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7078, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7381, PETRI_PLACES=412, PETRI_TRANSITIONS=542} [2024-06-20 16:41:51,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-20 16:41:51,676 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 542 transitions, 7381 flow [2024-06-20 16:41:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:51,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:51,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:51,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:41:51,677 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:51,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1392662716, now seen corresponding path program 12 times [2024-06-20 16:41:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164361750] [2024-06-20 16:41:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164361750] [2024-06-20 16:41:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164361750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:52,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:52,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696393290] [2024-06-20 16:41:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:52,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:52,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 542 transitions, 7381 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:52,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:52,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:52,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:41:54,421 INFO L124 PetriNetUnfolderBase]: 4849/7524 cut-off events. [2024-06-20 16:41:54,421 INFO L125 PetriNetUnfolderBase]: For 679442/679450 co-relation queries the response was YES. [2024-06-20 16:41:54,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60150 conditions, 7524 events. 4849/7524 cut-off events. For 679442/679450 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 45342 event pairs, 1547 based on Foata normal form. 10/7532 useless extension candidates. Maximal degree in co-relation 59957. Up to 7417 conditions per place. [2024-06-20 16:41:54,543 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 513 selfloop transitions, 39 changer transitions 0/555 dead transitions. [2024-06-20 16:41:54,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 555 transitions, 8557 flow [2024-06-20 16:41:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:41:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:41:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-20 16:41:54,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-20 16:41:54,544 INFO L175 Difference]: Start difference. First operand has 412 places, 542 transitions, 7381 flow. Second operand 8 states and 115 transitions. [2024-06-20 16:41:54,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 555 transitions, 8557 flow [2024-06-20 16:41:57,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 555 transitions, 8119 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-20 16:41:57,461 INFO L231 Difference]: Finished difference. Result has 413 places, 542 transitions, 7027 flow [2024-06-20 16:41:57,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6943, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7027, PETRI_PLACES=413, PETRI_TRANSITIONS=542} [2024-06-20 16:41:57,462 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-20 16:41:57,462 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 542 transitions, 7027 flow [2024-06-20 16:41:57,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:57,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:41:57,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:41:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:41:57,462 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:41:57,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:41:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1569527109, now seen corresponding path program 3 times [2024-06-20 16:41:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:41:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861053307] [2024-06-20 16:41:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:41:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:41:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:41:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:41:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:41:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861053307] [2024-06-20 16:41:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861053307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:41:58,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:41:58,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:41:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955655779] [2024-06-20 16:41:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:41:58,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:41:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:41:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:41:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:41:58,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:41:58,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 542 transitions, 7027 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:41:58,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:41:58,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:41:58,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:00,199 INFO L124 PetriNetUnfolderBase]: 4846/7520 cut-off events. [2024-06-20 16:42:00,199 INFO L125 PetriNetUnfolderBase]: For 679256/679264 co-relation queries the response was YES. [2024-06-20 16:42:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59266 conditions, 7520 events. 4846/7520 cut-off events. For 679256/679264 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 45344 event pairs, 1554 based on Foata normal form. 9/7527 useless extension candidates. Maximal degree in co-relation 59073. Up to 7426 conditions per place. [2024-06-20 16:42:00,319 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 509 selfloop transitions, 40 changer transitions 0/552 dead transitions. [2024-06-20 16:42:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 552 transitions, 8167 flow [2024-06-20 16:42:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:42:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:42:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-20 16:42:00,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-06-20 16:42:00,320 INFO L175 Difference]: Start difference. First operand has 413 places, 542 transitions, 7027 flow. Second operand 7 states and 103 transitions. [2024-06-20 16:42:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 552 transitions, 8167 flow [2024-06-20 16:42:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 552 transitions, 7955 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:03,936 INFO L231 Difference]: Finished difference. Result has 412 places, 542 transitions, 6905 flow [2024-06-20 16:42:03,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6815, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6905, PETRI_PLACES=412, PETRI_TRANSITIONS=542} [2024-06-20 16:42:03,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-20 16:42:03,936 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 542 transitions, 6905 flow [2024-06-20 16:42:03,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:03,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:03,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:03,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:42:03,937 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:03,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1569794422, now seen corresponding path program 14 times [2024-06-20 16:42:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472616900] [2024-06-20 16:42:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:04,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472616900] [2024-06-20 16:42:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472616900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:04,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:04,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:42:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907483694] [2024-06-20 16:42:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:42:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:42:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:42:04,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:04,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 542 transitions, 6905 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:04,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:04,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:06,535 INFO L124 PetriNetUnfolderBase]: 4858/7535 cut-off events. [2024-06-20 16:42:06,535 INFO L125 PetriNetUnfolderBase]: For 701993/701999 co-relation queries the response was YES. [2024-06-20 16:42:06,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59300 conditions, 7535 events. 4858/7535 cut-off events. For 701993/701999 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 45244 event pairs, 1091 based on Foata normal form. 10/7541 useless extension candidates. Maximal degree in co-relation 59107. Up to 7242 conditions per place. [2024-06-20 16:42:06,655 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 490 selfloop transitions, 71 changer transitions 0/564 dead transitions. [2024-06-20 16:42:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 564 transitions, 8427 flow [2024-06-20 16:42:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-20 16:42:06,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 16:42:06,656 INFO L175 Difference]: Start difference. First operand has 412 places, 542 transitions, 6905 flow. Second operand 8 states and 125 transitions. [2024-06-20 16:42:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 564 transitions, 8427 flow [2024-06-20 16:42:09,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 564 transitions, 8303 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:09,523 INFO L231 Difference]: Finished difference. Result has 413 places, 545 transitions, 7020 flow [2024-06-20 16:42:09,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6783, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7020, PETRI_PLACES=413, PETRI_TRANSITIONS=545} [2024-06-20 16:42:09,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-20 16:42:09,523 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 545 transitions, 7020 flow [2024-06-20 16:42:09,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:09,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:09,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:09,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:42:09,523 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:09,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1569530674, now seen corresponding path program 1 times [2024-06-20 16:42:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534328004] [2024-06-20 16:42:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534328004] [2024-06-20 16:42:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534328004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:10,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068170581] [2024-06-20 16:42:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:10,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:10,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 545 transitions, 7020 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:10,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:10,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:10,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:12,519 INFO L124 PetriNetUnfolderBase]: 4876/7565 cut-off events. [2024-06-20 16:42:12,520 INFO L125 PetriNetUnfolderBase]: For 719042/719048 co-relation queries the response was YES. [2024-06-20 16:42:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59253 conditions, 7565 events. 4876/7565 cut-off events. For 719042/719048 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 45489 event pairs, 1100 based on Foata normal form. 18/7579 useless extension candidates. Maximal degree in co-relation 59060. Up to 7279 conditions per place. [2024-06-20 16:42:12,644 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 504 selfloop transitions, 59 changer transitions 0/566 dead transitions. [2024-06-20 16:42:12,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 566 transitions, 8328 flow [2024-06-20 16:42:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-20 16:42:12,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-20 16:42:12,645 INFO L175 Difference]: Start difference. First operand has 413 places, 545 transitions, 7020 flow. Second operand 8 states and 123 transitions. [2024-06-20 16:42:12,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 566 transitions, 8328 flow [2024-06-20 16:42:16,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 566 transitions, 7988 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:16,465 INFO L231 Difference]: Finished difference. Result has 414 places, 546 transitions, 6830 flow [2024-06-20 16:42:16,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6680, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6830, PETRI_PLACES=414, PETRI_TRANSITIONS=546} [2024-06-20 16:42:16,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-20 16:42:16,466 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 546 transitions, 6830 flow [2024-06-20 16:42:16,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:16,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:16,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:16,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:42:16,466 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:16,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1126688854, now seen corresponding path program 2 times [2024-06-20 16:42:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806253137] [2024-06-20 16:42:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:17,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806253137] [2024-06-20 16:42:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806253137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:17,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891279205] [2024-06-20 16:42:17,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:17,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:17,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:17,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 546 transitions, 6830 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:17,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:17,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:17,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:19,292 INFO L124 PetriNetUnfolderBase]: 4904/7609 cut-off events. [2024-06-20 16:42:19,292 INFO L125 PetriNetUnfolderBase]: For 715615/715621 co-relation queries the response was YES. [2024-06-20 16:42:19,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59090 conditions, 7609 events. 4904/7609 cut-off events. For 715615/715621 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 45751 event pairs, 1094 based on Foata normal form. 14/7619 useless extension candidates. Maximal degree in co-relation 58897. Up to 7139 conditions per place. [2024-06-20 16:42:19,414 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 503 selfloop transitions, 65 changer transitions 0/571 dead transitions. [2024-06-20 16:42:19,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 571 transitions, 8348 flow [2024-06-20 16:42:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-20 16:42:19,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 16:42:19,415 INFO L175 Difference]: Start difference. First operand has 414 places, 546 transitions, 6830 flow. Second operand 8 states and 125 transitions. [2024-06-20 16:42:19,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 571 transitions, 8348 flow [2024-06-20 16:42:22,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 571 transitions, 8222 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 16:42:22,303 INFO L231 Difference]: Finished difference. Result has 416 places, 547 transitions, 6864 flow [2024-06-20 16:42:22,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6704, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6864, PETRI_PLACES=416, PETRI_TRANSITIONS=547} [2024-06-20 16:42:22,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-20 16:42:22,304 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 547 transitions, 6864 flow [2024-06-20 16:42:22,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:22,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:22,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:22,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:42:22,304 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:22,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1696651046, now seen corresponding path program 3 times [2024-06-20 16:42:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:22,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54116972] [2024-06-20 16:42:22,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:22,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:23,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54116972] [2024-06-20 16:42:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54116972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:23,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:23,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506125340] [2024-06-20 16:42:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:23,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:23,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:23,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 547 transitions, 6864 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:23,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:23,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:23,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:25,170 INFO L124 PetriNetUnfolderBase]: 4886/7583 cut-off events. [2024-06-20 16:42:25,170 INFO L125 PetriNetUnfolderBase]: For 694341/694347 co-relation queries the response was YES. [2024-06-20 16:42:25,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58271 conditions, 7583 events. 4886/7583 cut-off events. For 694341/694347 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 45629 event pairs, 1090 based on Foata normal form. 14/7593 useless extension candidates. Maximal degree in co-relation 58077. Up to 7259 conditions per place. [2024-06-20 16:42:25,289 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 508 selfloop transitions, 60 changer transitions 0/571 dead transitions. [2024-06-20 16:42:25,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 571 transitions, 8190 flow [2024-06-20 16:42:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-20 16:42:25,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 16:42:25,290 INFO L175 Difference]: Start difference. First operand has 416 places, 547 transitions, 6864 flow. Second operand 8 states and 126 transitions. [2024-06-20 16:42:25,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 571 transitions, 8190 flow [2024-06-20 16:42:28,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 571 transitions, 8060 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-20 16:42:28,106 INFO L231 Difference]: Finished difference. Result has 419 places, 547 transitions, 6858 flow [2024-06-20 16:42:28,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6734, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6858, PETRI_PLACES=419, PETRI_TRANSITIONS=547} [2024-06-20 16:42:28,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-20 16:42:28,107 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 547 transitions, 6858 flow [2024-06-20 16:42:28,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:28,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:28,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:28,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:42:28,107 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:28,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash -622437600, now seen corresponding path program 1 times [2024-06-20 16:42:28,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:28,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010274820] [2024-06-20 16:42:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:29,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010274820] [2024-06-20 16:42:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010274820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028028355] [2024-06-20 16:42:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:29,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:29,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 547 transitions, 6858 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:29,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:29,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:29,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:31,230 INFO L124 PetriNetUnfolderBase]: 4894/7607 cut-off events. [2024-06-20 16:42:31,231 INFO L125 PetriNetUnfolderBase]: For 682609/682609 co-relation queries the response was YES. [2024-06-20 16:42:31,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58374 conditions, 7607 events. 4894/7607 cut-off events. For 682609/682609 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 46096 event pairs, 2426 based on Foata normal form. 2/7608 useless extension candidates. Maximal degree in co-relation 58179. Up to 7501 conditions per place. [2024-06-20 16:42:31,352 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 536 selfloop transitions, 30 changer transitions 0/569 dead transitions. [2024-06-20 16:42:31,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 569 transitions, 8148 flow [2024-06-20 16:42:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-20 16:42:31,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-20 16:42:31,353 INFO L175 Difference]: Start difference. First operand has 419 places, 547 transitions, 6858 flow. Second operand 8 states and 121 transitions. [2024-06-20 16:42:31,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 569 transitions, 8148 flow [2024-06-20 16:42:34,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 569 transitions, 7961 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:42:34,347 INFO L231 Difference]: Finished difference. Result has 419 places, 549 transitions, 6796 flow [2024-06-20 16:42:34,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6671, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6796, PETRI_PLACES=419, PETRI_TRANSITIONS=549} [2024-06-20 16:42:34,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-20 16:42:34,347 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 549 transitions, 6796 flow [2024-06-20 16:42:34,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:34,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:34,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:34,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:42:34,348 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:34,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -622443552, now seen corresponding path program 1 times [2024-06-20 16:42:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425031363] [2024-06-20 16:42:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425031363] [2024-06-20 16:42:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425031363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038549148] [2024-06-20 16:42:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:35,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 549 transitions, 6796 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:35,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:35,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:37,674 INFO L124 PetriNetUnfolderBase]: 4904/7621 cut-off events. [2024-06-20 16:42:37,674 INFO L125 PetriNetUnfolderBase]: For 695288/695288 co-relation queries the response was YES. [2024-06-20 16:42:37,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58337 conditions, 7621 events. 4904/7621 cut-off events. For 695288/695288 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 46168 event pairs, 2422 based on Foata normal form. 2/7622 useless extension candidates. Maximal degree in co-relation 58142. Up to 7474 conditions per place. [2024-06-20 16:42:37,804 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 528 selfloop transitions, 43 changer transitions 0/574 dead transitions. [2024-06-20 16:42:37,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 574 transitions, 8142 flow [2024-06-20 16:42:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:42:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:42:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-20 16:42:37,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-20 16:42:37,805 INFO L175 Difference]: Start difference. First operand has 419 places, 549 transitions, 6796 flow. Second operand 9 states and 136 transitions. [2024-06-20 16:42:37,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 574 transitions, 8142 flow [2024-06-20 16:42:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 574 transitions, 8033 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:42:40,910 INFO L231 Difference]: Finished difference. Result has 422 places, 552 transitions, 6859 flow [2024-06-20 16:42:40,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6687, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6859, PETRI_PLACES=422, PETRI_TRANSITIONS=552} [2024-06-20 16:42:40,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-20 16:42:40,911 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 552 transitions, 6859 flow [2024-06-20 16:42:40,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:40,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:40,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:40,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:42:40,911 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:40,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash -478345260, now seen corresponding path program 2 times [2024-06-20 16:42:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:40,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507576870] [2024-06-20 16:42:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:40,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507576870] [2024-06-20 16:42:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507576870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:42,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872075349] [2024-06-20 16:42:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:42,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:42,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:42,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 552 transitions, 6859 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:42,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:42,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:42,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:44,101 INFO L124 PetriNetUnfolderBase]: 4912/7633 cut-off events. [2024-06-20 16:42:44,101 INFO L125 PetriNetUnfolderBase]: For 709380/709380 co-relation queries the response was YES. [2024-06-20 16:42:44,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59055 conditions, 7633 events. 4912/7633 cut-off events. For 709380/709380 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 46276 event pairs, 2430 based on Foata normal form. 2/7634 useless extension candidates. Maximal degree in co-relation 58859. Up to 7550 conditions per place. [2024-06-20 16:42:44,231 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 546 selfloop transitions, 22 changer transitions 0/571 dead transitions. [2024-06-20 16:42:44,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 571 transitions, 8145 flow [2024-06-20 16:42:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-20 16:42:44,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-20 16:42:44,232 INFO L175 Difference]: Start difference. First operand has 422 places, 552 transitions, 6859 flow. Second operand 8 states and 117 transitions. [2024-06-20 16:42:44,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 571 transitions, 8145 flow [2024-06-20 16:42:47,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 571 transitions, 7995 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-20 16:42:47,533 INFO L231 Difference]: Finished difference. Result has 423 places, 554 transitions, 6824 flow [2024-06-20 16:42:47,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6709, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6824, PETRI_PLACES=423, PETRI_TRANSITIONS=554} [2024-06-20 16:42:47,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-20 16:42:47,533 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 554 transitions, 6824 flow [2024-06-20 16:42:47,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:47,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:47,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:47,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:42:47,534 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:47,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash -478553022, now seen corresponding path program 2 times [2024-06-20 16:42:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:47,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637421516] [2024-06-20 16:42:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:47,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:48,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637421516] [2024-06-20 16:42:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637421516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:42:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630062109] [2024-06-20 16:42:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:42:48,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:42:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:42:48,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:48,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 554 transitions, 6824 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:48,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:48,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:48,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:50,507 INFO L124 PetriNetUnfolderBase]: 4914/7636 cut-off events. [2024-06-20 16:42:50,507 INFO L125 PetriNetUnfolderBase]: For 718230/718230 co-relation queries the response was YES. [2024-06-20 16:42:50,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59112 conditions, 7636 events. 4914/7636 cut-off events. For 718230/718230 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 46288 event pairs, 2431 based on Foata normal form. 2/7637 useless extension candidates. Maximal degree in co-relation 58915. Up to 7543 conditions per place. [2024-06-20 16:42:50,613 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 546 selfloop transitions, 25 changer transitions 0/574 dead transitions. [2024-06-20 16:42:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 574 transitions, 8148 flow [2024-06-20 16:42:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-20 16:42:50,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-20 16:42:50,614 INFO L175 Difference]: Start difference. First operand has 423 places, 554 transitions, 6824 flow. Second operand 8 states and 119 transitions. [2024-06-20 16:42:50,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 574 transitions, 8148 flow [2024-06-20 16:42:53,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 574 transitions, 8049 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 16:42:53,754 INFO L231 Difference]: Finished difference. Result has 425 places, 557 transitions, 6871 flow [2024-06-20 16:42:53,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6871, PETRI_PLACES=425, PETRI_TRANSITIONS=557} [2024-06-20 16:42:53,755 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-20 16:42:53,755 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 557 transitions, 6871 flow [2024-06-20 16:42:53,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:53,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:42:53,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:42:53,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:42:53,755 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:42:53,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:42:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -478337820, now seen corresponding path program 3 times [2024-06-20 16:42:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:42:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301418593] [2024-06-20 16:42:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:42:53,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:42:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:42:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:42:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:42:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301418593] [2024-06-20 16:42:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301418593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:42:54,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:42:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:42:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983366146] [2024-06-20 16:42:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:42:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:42:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:42:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:42:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:42:55,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:42:55,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 557 transitions, 6871 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:42:55,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:42:55,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:42:55,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:42:56,867 INFO L124 PetriNetUnfolderBase]: 4922/7648 cut-off events. [2024-06-20 16:42:56,867 INFO L125 PetriNetUnfolderBase]: For 732847/732847 co-relation queries the response was YES. [2024-06-20 16:42:56,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59796 conditions, 7648 events. 4922/7648 cut-off events. For 732847/732847 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 46332 event pairs, 2429 based on Foata normal form. 2/7649 useless extension candidates. Maximal degree in co-relation 59598. Up to 7565 conditions per place. [2024-06-20 16:42:56,984 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 552 selfloop transitions, 21 changer transitions 0/576 dead transitions. [2024-06-20 16:42:56,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 576 transitions, 8161 flow [2024-06-20 16:42:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:42:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:42:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-20 16:42:56,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-20 16:42:56,985 INFO L175 Difference]: Start difference. First operand has 425 places, 557 transitions, 6871 flow. Second operand 8 states and 116 transitions. [2024-06-20 16:42:56,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 576 transitions, 8161 flow [2024-06-20 16:43:00,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 576 transitions, 8045 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:00,339 INFO L231 Difference]: Finished difference. Result has 427 places, 559 transitions, 6874 flow [2024-06-20 16:43:00,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6874, PETRI_PLACES=427, PETRI_TRANSITIONS=559} [2024-06-20 16:43:00,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-20 16:43:00,339 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 559 transitions, 6874 flow [2024-06-20 16:43:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:00,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:00,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:00,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:43:00,340 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:00,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1063106930, now seen corresponding path program 4 times [2024-06-20 16:43:00,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225802864] [2024-06-20 16:43:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:01,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:01,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225802864] [2024-06-20 16:43:01,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225802864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:01,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:01,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:01,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716047006] [2024-06-20 16:43:01,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:01,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:01,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 559 transitions, 6874 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:01,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:01,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:01,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:03,471 INFO L124 PetriNetUnfolderBase]: 4930/7660 cut-off events. [2024-06-20 16:43:03,471 INFO L125 PetriNetUnfolderBase]: For 747880/747880 co-relation queries the response was YES. [2024-06-20 16:43:03,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60105 conditions, 7660 events. 4930/7660 cut-off events. For 747880/747880 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 46447 event pairs, 2452 based on Foata normal form. 2/7661 useless extension candidates. Maximal degree in co-relation 59906. Up to 7592 conditions per place. [2024-06-20 16:43:03,598 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 554 selfloop transitions, 17 changer transitions 0/574 dead transitions. [2024-06-20 16:43:03,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 574 transitions, 8148 flow [2024-06-20 16:43:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:43:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:43:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-20 16:43:03,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 16:43:03,599 INFO L175 Difference]: Start difference. First operand has 427 places, 559 transitions, 6874 flow. Second operand 8 states and 111 transitions. [2024-06-20 16:43:03,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 574 transitions, 8148 flow [2024-06-20 16:43:07,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 574 transitions, 8045 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:07,394 INFO L231 Difference]: Finished difference. Result has 429 places, 561 transitions, 6886 flow [2024-06-20 16:43:07,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6886, PETRI_PLACES=429, PETRI_TRANSITIONS=561} [2024-06-20 16:43:07,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-20 16:43:07,394 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 561 transitions, 6886 flow [2024-06-20 16:43:07,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:07,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:07,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:07,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:43:07,394 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:07,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:07,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1135700926, now seen corresponding path program 5 times [2024-06-20 16:43:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264599689] [2024-06-20 16:43:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:08,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264599689] [2024-06-20 16:43:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264599689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475484236] [2024-06-20 16:43:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:08,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:08,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 561 transitions, 6886 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:08,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:08,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:08,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:10,296 INFO L124 PetriNetUnfolderBase]: 4938/7672 cut-off events. [2024-06-20 16:43:10,296 INFO L125 PetriNetUnfolderBase]: For 763508/763508 co-relation queries the response was YES. [2024-06-20 16:43:10,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60398 conditions, 7672 events. 4938/7672 cut-off events. For 763508/763508 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 46562 event pairs, 2458 based on Foata normal form. 2/7673 useless extension candidates. Maximal degree in co-relation 60198. Up to 7588 conditions per place. [2024-06-20 16:43:10,419 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 550 selfloop transitions, 23 changer transitions 0/576 dead transitions. [2024-06-20 16:43:10,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 576 transitions, 8156 flow [2024-06-20 16:43:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:43:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:43:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-20 16:43:10,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 16:43:10,420 INFO L175 Difference]: Start difference. First operand has 429 places, 561 transitions, 6886 flow. Second operand 8 states and 111 transitions. [2024-06-20 16:43:10,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 576 transitions, 8156 flow [2024-06-20 16:43:13,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 576 transitions, 8061 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-20 16:43:13,974 INFO L231 Difference]: Finished difference. Result has 432 places, 563 transitions, 6923 flow [2024-06-20 16:43:13,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6923, PETRI_PLACES=432, PETRI_TRANSITIONS=563} [2024-06-20 16:43:13,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-20 16:43:13,975 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 563 transitions, 6923 flow [2024-06-20 16:43:13,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:13,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:13,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:13,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:43:13,975 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:13,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash 803615257, now seen corresponding path program 1 times [2024-06-20 16:43:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:13,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16049209] [2024-06-20 16:43:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:13,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16049209] [2024-06-20 16:43:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16049209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:14,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:14,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075369914] [2024-06-20 16:43:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:14,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:14,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:15,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:15,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 563 transitions, 6923 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:15,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:15,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:15,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:16,880 INFO L124 PetriNetUnfolderBase]: 4932/7664 cut-off events. [2024-06-20 16:43:16,880 INFO L125 PetriNetUnfolderBase]: For 767235/767235 co-relation queries the response was YES. [2024-06-20 16:43:16,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60236 conditions, 7664 events. 4932/7664 cut-off events. For 767235/767235 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 46496 event pairs, 2453 based on Foata normal form. 2/7665 useless extension candidates. Maximal degree in co-relation 60035. Up to 7571 conditions per place. [2024-06-20 16:43:17,013 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 546 selfloop transitions, 31 changer transitions 0/580 dead transitions. [2024-06-20 16:43:17,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 580 transitions, 8267 flow [2024-06-20 16:43:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:43:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:43:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-20 16:43:17,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 16:43:17,014 INFO L175 Difference]: Start difference. First operand has 432 places, 563 transitions, 6923 flow. Second operand 8 states and 114 transitions. [2024-06-20 16:43:17,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 580 transitions, 8267 flow [2024-06-20 16:43:20,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 580 transitions, 8153 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:20,850 INFO L231 Difference]: Finished difference. Result has 434 places, 566 transitions, 6983 flow [2024-06-20 16:43:20,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6983, PETRI_PLACES=434, PETRI_TRANSITIONS=566} [2024-06-20 16:43:20,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-20 16:43:20,850 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 566 transitions, 6983 flow [2024-06-20 16:43:20,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:20,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:20,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:20,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:43:20,851 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:20,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:20,851 INFO L85 PathProgramCache]: Analyzing trace with hash -456159086, now seen corresponding path program 6 times [2024-06-20 16:43:20,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:20,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193799288] [2024-06-20 16:43:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:21,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:21,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193799288] [2024-06-20 16:43:21,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193799288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:21,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:21,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582734850] [2024-06-20 16:43:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:21,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:21,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:21,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:21,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 566 transitions, 6983 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:21,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:21,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:21,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:23,848 INFO L124 PetriNetUnfolderBase]: 4940/7676 cut-off events. [2024-06-20 16:43:23,848 INFO L125 PetriNetUnfolderBase]: For 783315/783315 co-relation queries the response was YES. [2024-06-20 16:43:23,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60929 conditions, 7676 events. 4940/7676 cut-off events. For 783315/783315 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 46550 event pairs, 2457 based on Foata normal form. 2/7677 useless extension candidates. Maximal degree in co-relation 60727. Up to 7593 conditions per place. [2024-06-20 16:43:23,973 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 551 selfloop transitions, 27 changer transitions 0/581 dead transitions. [2024-06-20 16:43:23,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 581 transitions, 8281 flow [2024-06-20 16:43:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:43:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:43:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-20 16:43:23,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-20 16:43:23,974 INFO L175 Difference]: Start difference. First operand has 434 places, 566 transitions, 6983 flow. Second operand 8 states and 112 transitions. [2024-06-20 16:43:23,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 581 transitions, 8281 flow [2024-06-20 16:43:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 581 transitions, 8147 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:43:28,050 INFO L231 Difference]: Finished difference. Result has 435 places, 568 transitions, 6997 flow [2024-06-20 16:43:28,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6849, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6997, PETRI_PLACES=435, PETRI_TRANSITIONS=568} [2024-06-20 16:43:28,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-20 16:43:28,051 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 568 transitions, 6997 flow [2024-06-20 16:43:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:28,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:28,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:43:28,051 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:28,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:28,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1126504156, now seen corresponding path program 7 times [2024-06-20 16:43:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101333196] [2024-06-20 16:43:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:29,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:29,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101333196] [2024-06-20 16:43:29,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101333196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:29,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:29,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999309118] [2024-06-20 16:43:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:29,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:29,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:29,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:29,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 568 transitions, 6997 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:29,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:29,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:29,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:31,166 INFO L124 PetriNetUnfolderBase]: 4935/7669 cut-off events. [2024-06-20 16:43:31,167 INFO L125 PetriNetUnfolderBase]: For 786292/786292 co-relation queries the response was YES. [2024-06-20 16:43:31,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60740 conditions, 7669 events. 4935/7669 cut-off events. For 786292/786292 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 46453 event pairs, 2450 based on Foata normal form. 2/7670 useless extension candidates. Maximal degree in co-relation 60537. Up to 7596 conditions per place. [2024-06-20 16:43:31,282 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 563 selfloop transitions, 17 changer transitions 0/583 dead transitions. [2024-06-20 16:43:31,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 583 transitions, 8279 flow [2024-06-20 16:43:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:43:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:43:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-20 16:43:31,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 16:43:31,283 INFO L175 Difference]: Start difference. First operand has 435 places, 568 transitions, 6997 flow. Second operand 8 states and 110 transitions. [2024-06-20 16:43:31,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 583 transitions, 8279 flow [2024-06-20 16:43:34,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 583 transitions, 8147 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:34,762 INFO L231 Difference]: Finished difference. Result has 437 places, 570 transitions, 6994 flow [2024-06-20 16:43:34,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6994, PETRI_PLACES=437, PETRI_TRANSITIONS=570} [2024-06-20 16:43:34,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-20 16:43:34,762 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 570 transitions, 6994 flow [2024-06-20 16:43:34,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:34,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:34,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:34,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:43:34,763 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:34,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1364405445, now seen corresponding path program 1 times [2024-06-20 16:43:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979103848] [2024-06-20 16:43:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:34,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979103848] [2024-06-20 16:43:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979103848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:43:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370444248] [2024-06-20 16:43:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:35,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:43:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:43:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:43:35,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-20 16:43:35,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 570 transitions, 6994 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:35,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:35,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-20 16:43:35,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:37,744 INFO L124 PetriNetUnfolderBase]: 5050/7846 cut-off events. [2024-06-20 16:43:37,745 INFO L125 PetriNetUnfolderBase]: For 800454/800553 co-relation queries the response was YES. [2024-06-20 16:43:37,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62050 conditions, 7846 events. 5050/7846 cut-off events. For 800454/800553 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 47749 event pairs, 977 based on Foata normal form. 31/7840 useless extension candidates. Maximal degree in co-relation 61846. Up to 7248 conditions per place. [2024-06-20 16:43:37,864 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 477 selfloop transitions, 123 changer transitions 0/651 dead transitions. [2024-06-20 16:43:37,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 651 transitions, 9243 flow [2024-06-20 16:43:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:43:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:43:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-20 16:43:37,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-20 16:43:37,865 INFO L175 Difference]: Start difference. First operand has 437 places, 570 transitions, 6994 flow. Second operand 10 states and 164 transitions. [2024-06-20 16:43:37,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 651 transitions, 9243 flow [2024-06-20 16:43:42,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 651 transitions, 9134 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:42,163 INFO L231 Difference]: Finished difference. Result has 444 places, 621 transitions, 8024 flow [2024-06-20 16:43:42,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8024, PETRI_PLACES=444, PETRI_TRANSITIONS=621} [2024-06-20 16:43:42,163 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-20 16:43:42,164 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 621 transitions, 8024 flow [2024-06-20 16:43:42,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:42,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:42,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:43:42,164 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:42,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1356348003, now seen corresponding path program 2 times [2024-06-20 16:43:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169153498] [2024-06-20 16:43:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:43,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:43,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169153498] [2024-06-20 16:43:43,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169153498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:43,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:43,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:43:43,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928244729] [2024-06-20 16:43:43,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:43:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:43:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:43:43,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:43,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 621 transitions, 8024 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:43,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:43,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:43,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:45,355 INFO L124 PetriNetUnfolderBase]: 5191/8024 cut-off events. [2024-06-20 16:43:45,355 INFO L125 PetriNetUnfolderBase]: For 817714/817716 co-relation queries the response was YES. [2024-06-20 16:43:45,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64726 conditions, 8024 events. 5191/8024 cut-off events. For 817714/817716 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 48553 event pairs, 1545 based on Foata normal form. 6/8029 useless extension candidates. Maximal degree in co-relation 64518. Up to 7765 conditions per place. [2024-06-20 16:43:45,484 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 568 selfloop transitions, 91 changer transitions 0/662 dead transitions. [2024-06-20 16:43:45,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 662 transitions, 9683 flow [2024-06-20 16:43:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:43:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:43:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-20 16:43:45,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-20 16:43:45,485 INFO L175 Difference]: Start difference. First operand has 444 places, 621 transitions, 8024 flow. Second operand 11 states and 168 transitions. [2024-06-20 16:43:45,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 662 transitions, 9683 flow [2024-06-20 16:43:49,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 662 transitions, 9471 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-20 16:43:49,468 INFO L231 Difference]: Finished difference. Result has 454 places, 633 transitions, 8266 flow [2024-06-20 16:43:49,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8266, PETRI_PLACES=454, PETRI_TRANSITIONS=633} [2024-06-20 16:43:49,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-20 16:43:49,469 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 633 transitions, 8266 flow [2024-06-20 16:43:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:49,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:49,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:49,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:43:49,469 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:49,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1498429549, now seen corresponding path program 3 times [2024-06-20 16:43:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:49,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124903433] [2024-06-20 16:43:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:50,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124903433] [2024-06-20 16:43:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124903433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:50,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:50,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:43:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289055990] [2024-06-20 16:43:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:43:50,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:43:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:43:50,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:50,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 633 transitions, 8266 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:50,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:50,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:50,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:43:52,790 INFO L124 PetriNetUnfolderBase]: 5240/8091 cut-off events. [2024-06-20 16:43:52,790 INFO L125 PetriNetUnfolderBase]: For 825261/825269 co-relation queries the response was YES. [2024-06-20 16:43:52,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65950 conditions, 8091 events. 5240/8091 cut-off events. For 825261/825269 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 48947 event pairs, 1183 based on Foata normal form. 10/8100 useless extension candidates. Maximal degree in co-relation 65739. Up to 7753 conditions per place. [2024-06-20 16:43:52,926 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 564 selfloop transitions, 119 changer transitions 0/686 dead transitions. [2024-06-20 16:43:52,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 686 transitions, 10175 flow [2024-06-20 16:43:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:43:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:43:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-20 16:43:52,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-20 16:43:52,928 INFO L175 Difference]: Start difference. First operand has 454 places, 633 transitions, 8266 flow. Second operand 12 states and 184 transitions. [2024-06-20 16:43:52,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 686 transitions, 10175 flow [2024-06-20 16:43:57,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 686 transitions, 9939 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-20 16:43:57,830 INFO L231 Difference]: Finished difference. Result has 462 places, 651 transitions, 8712 flow [2024-06-20 16:43:57,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8059, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8712, PETRI_PLACES=462, PETRI_TRANSITIONS=651} [2024-06-20 16:43:57,831 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-20 16:43:57,831 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 651 transitions, 8712 flow [2024-06-20 16:43:57,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:57,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:43:57,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:43:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:43:57,831 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:43:57,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:43:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1007043018, now seen corresponding path program 1 times [2024-06-20 16:43:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:43:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475111463] [2024-06-20 16:43:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:43:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:43:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:43:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:43:58,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:43:58,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475111463] [2024-06-20 16:43:58,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475111463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:43:58,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:43:58,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:43:58,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648441764] [2024-06-20 16:43:58,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:43:58,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:43:58,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:43:58,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:43:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:43:58,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:43:58,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 651 transitions, 8712 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:43:58,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:43:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:43:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:01,276 INFO L124 PetriNetUnfolderBase]: 5324/8212 cut-off events. [2024-06-20 16:44:01,276 INFO L125 PetriNetUnfolderBase]: For 880069/880077 co-relation queries the response was YES. [2024-06-20 16:44:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68011 conditions, 8212 events. 5324/8212 cut-off events. For 880069/880077 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 49694 event pairs, 1187 based on Foata normal form. 12/8223 useless extension candidates. Maximal degree in co-relation 67797. Up to 7866 conditions per place. [2024-06-20 16:44:01,443 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 604 selfloop transitions, 110 changer transitions 0/717 dead transitions. [2024-06-20 16:44:01,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 717 transitions, 11109 flow [2024-06-20 16:44:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-20 16:44:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-20 16:44:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 211 transitions. [2024-06-20 16:44:01,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3767857142857143 [2024-06-20 16:44:01,444 INFO L175 Difference]: Start difference. First operand has 462 places, 651 transitions, 8712 flow. Second operand 14 states and 211 transitions. [2024-06-20 16:44:01,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 717 transitions, 11109 flow [2024-06-20 16:44:05,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 717 transitions, 10937 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-20 16:44:05,555 INFO L231 Difference]: Finished difference. Result has 474 places, 671 transitions, 9280 flow [2024-06-20 16:44:05,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8544, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9280, PETRI_PLACES=474, PETRI_TRANSITIONS=671} [2024-06-20 16:44:05,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-20 16:44:05,555 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 671 transitions, 9280 flow [2024-06-20 16:44:05,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:05,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:05,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:44:05,556 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:05,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -701895848, now seen corresponding path program 2 times [2024-06-20 16:44:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745079794] [2024-06-20 16:44:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745079794] [2024-06-20 16:44:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745079794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187379528] [2024-06-20 16:44:06,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:06,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:06,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 671 transitions, 9280 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:06,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:06,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:06,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:09,090 INFO L124 PetriNetUnfolderBase]: 5378/8286 cut-off events. [2024-06-20 16:44:09,091 INFO L125 PetriNetUnfolderBase]: For 939644/939652 co-relation queries the response was YES. [2024-06-20 16:44:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71048 conditions, 8286 events. 5378/8286 cut-off events. For 939644/939652 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 50146 event pairs, 1194 based on Foata normal form. 14/8299 useless extension candidates. Maximal degree in co-relation 70830. Up to 7843 conditions per place. [2024-06-20 16:44:09,244 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 587 selfloop transitions, 132 changer transitions 0/722 dead transitions. [2024-06-20 16:44:09,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 722 transitions, 11503 flow [2024-06-20 16:44:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:44:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:44:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-20 16:44:09,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-20 16:44:09,245 INFO L175 Difference]: Start difference. First operand has 474 places, 671 transitions, 9280 flow. Second operand 13 states and 200 transitions. [2024-06-20 16:44:09,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 722 transitions, 11503 flow [2024-06-20 16:44:14,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 722 transitions, 11161 flow, removed 106 selfloop flow, removed 8 redundant places. [2024-06-20 16:44:14,614 INFO L231 Difference]: Finished difference. Result has 479 places, 680 transitions, 9537 flow [2024-06-20 16:44:14,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8978, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9537, PETRI_PLACES=479, PETRI_TRANSITIONS=680} [2024-06-20 16:44:14,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-20 16:44:14,615 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 680 transitions, 9537 flow [2024-06-20 16:44:14,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:14,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:14,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:14,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:44:14,615 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:14,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash 171486346, now seen corresponding path program 3 times [2024-06-20 16:44:14,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:14,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115223651] [2024-06-20 16:44:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:15,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115223651] [2024-06-20 16:44:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115223651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692401211] [2024-06-20 16:44:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:15,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:15,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:15,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:15,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 680 transitions, 9537 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:15,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:15,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:15,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:18,329 INFO L124 PetriNetUnfolderBase]: 5413/8337 cut-off events. [2024-06-20 16:44:18,329 INFO L125 PetriNetUnfolderBase]: For 964096/964104 co-relation queries the response was YES. [2024-06-20 16:44:18,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71911 conditions, 8337 events. 5413/8337 cut-off events. For 964096/964104 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50472 event pairs, 1213 based on Foata normal form. 15/8351 useless extension candidates. Maximal degree in co-relation 71691. Up to 8006 conditions per place. [2024-06-20 16:44:18,470 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 611 selfloop transitions, 112 changer transitions 0/726 dead transitions. [2024-06-20 16:44:18,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 726 transitions, 11410 flow [2024-06-20 16:44:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:44:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:44:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 195 transitions. [2024-06-20 16:44:18,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:44:18,471 INFO L175 Difference]: Start difference. First operand has 479 places, 680 transitions, 9537 flow. Second operand 13 states and 195 transitions. [2024-06-20 16:44:18,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 726 transitions, 11410 flow [2024-06-20 16:44:23,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 726 transitions, 11027 flow, removed 116 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:23,784 INFO L231 Difference]: Finished difference. Result has 482 places, 686 transitions, 9583 flow [2024-06-20 16:44:23,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9194, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9583, PETRI_PLACES=482, PETRI_TRANSITIONS=686} [2024-06-20 16:44:23,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-20 16:44:23,785 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 686 transitions, 9583 flow [2024-06-20 16:44:23,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:23,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:23,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:44:23,785 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:23,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2138475060, now seen corresponding path program 4 times [2024-06-20 16:44:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67458849] [2024-06-20 16:44:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:23,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67458849] [2024-06-20 16:44:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67458849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:24,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109338276] [2024-06-20 16:44:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:24,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:24,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:24,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:24,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 686 transitions, 9583 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:24,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:24,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:24,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:27,177 INFO L124 PetriNetUnfolderBase]: 5392/8306 cut-off events. [2024-06-20 16:44:27,178 INFO L125 PetriNetUnfolderBase]: For 913940/913948 co-relation queries the response was YES. [2024-06-20 16:44:27,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70288 conditions, 8306 events. 5392/8306 cut-off events. For 913940/913948 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50255 event pairs, 1240 based on Foata normal form. 15/8320 useless extension candidates. Maximal degree in co-relation 70067. Up to 8026 conditions per place. [2024-06-20 16:44:27,341 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 617 selfloop transitions, 100 changer transitions 0/720 dead transitions. [2024-06-20 16:44:27,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 720 transitions, 11207 flow [2024-06-20 16:44:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:44:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:44:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-20 16:44:27,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-20 16:44:27,342 INFO L175 Difference]: Start difference. First operand has 482 places, 686 transitions, 9583 flow. Second operand 12 states and 178 transitions. [2024-06-20 16:44:27,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 720 transitions, 11207 flow [2024-06-20 16:44:32,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 720 transitions, 10795 flow, removed 98 selfloop flow, removed 11 redundant places. [2024-06-20 16:44:32,968 INFO L231 Difference]: Finished difference. Result has 483 places, 686 transitions, 9381 flow [2024-06-20 16:44:32,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9171, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9381, PETRI_PLACES=483, PETRI_TRANSITIONS=686} [2024-06-20 16:44:32,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-20 16:44:32,969 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 686 transitions, 9381 flow [2024-06-20 16:44:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:32,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:32,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:44:32,969 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:32,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2130194123, now seen corresponding path program 1 times [2024-06-20 16:44:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510816815] [2024-06-20 16:44:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:33,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510816815] [2024-06-20 16:44:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510816815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:33,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554873066] [2024-06-20 16:44:33,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:33,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:33,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:33,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 686 transitions, 9381 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:33,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:33,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:33,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:36,297 INFO L124 PetriNetUnfolderBase]: 5407/8328 cut-off events. [2024-06-20 16:44:36,297 INFO L125 PetriNetUnfolderBase]: For 897809/897817 co-relation queries the response was YES. [2024-06-20 16:44:36,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70179 conditions, 8328 events. 5407/8328 cut-off events. For 897809/897817 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 50400 event pairs, 1242 based on Foata normal form. 10/8337 useless extension candidates. Maximal degree in co-relation 69957. Up to 8065 conditions per place. [2024-06-20 16:44:36,452 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 621 selfloop transitions, 99 changer transitions 0/723 dead transitions. [2024-06-20 16:44:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 723 transitions, 11119 flow [2024-06-20 16:44:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:44:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:44:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-20 16:44:36,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2024-06-20 16:44:36,453 INFO L175 Difference]: Start difference. First operand has 483 places, 686 transitions, 9381 flow. Second operand 11 states and 166 transitions. [2024-06-20 16:44:36,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 723 transitions, 11119 flow [2024-06-20 16:44:41,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 723 transitions, 10899 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-20 16:44:41,840 INFO L231 Difference]: Finished difference. Result has 485 places, 692 transitions, 9529 flow [2024-06-20 16:44:41,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9165, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9529, PETRI_PLACES=485, PETRI_TRANSITIONS=692} [2024-06-20 16:44:41,841 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-20 16:44:41,841 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 692 transitions, 9529 flow [2024-06-20 16:44:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:41,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:41,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:44:41,841 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:41,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 643618297, now seen corresponding path program 4 times [2024-06-20 16:44:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:41,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987377579] [2024-06-20 16:44:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:42,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987377579] [2024-06-20 16:44:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987377579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:42,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:42,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424712790] [2024-06-20 16:44:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:42,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:42,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 692 transitions, 9529 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:42,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:42,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:42,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:45,393 INFO L124 PetriNetUnfolderBase]: 5409/8340 cut-off events. [2024-06-20 16:44:45,393 INFO L125 PetriNetUnfolderBase]: For 908616/908622 co-relation queries the response was YES. [2024-06-20 16:44:45,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70673 conditions, 8340 events. 5409/8340 cut-off events. For 908616/908622 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 50575 event pairs, 1443 based on Foata normal form. 8/8345 useless extension candidates. Maximal degree in co-relation 70449. Up to 7802 conditions per place. [2024-06-20 16:44:45,545 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 556 selfloop transitions, 163 changer transitions 0/722 dead transitions. [2024-06-20 16:44:45,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 722 transitions, 11467 flow [2024-06-20 16:44:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:44:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:44:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-20 16:44:45,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-20 16:44:45,546 INFO L175 Difference]: Start difference. First operand has 485 places, 692 transitions, 9529 flow. Second operand 9 states and 143 transitions. [2024-06-20 16:44:45,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 722 transitions, 11467 flow [2024-06-20 16:44:51,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 722 transitions, 11171 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-20 16:44:51,107 INFO L231 Difference]: Finished difference. Result has 487 places, 695 transitions, 9772 flow [2024-06-20 16:44:51,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9233, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9772, PETRI_PLACES=487, PETRI_TRANSITIONS=695} [2024-06-20 16:44:51,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-20 16:44:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 695 transitions, 9772 flow [2024-06-20 16:44:51,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:51,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:44:51,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:44:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:44:51,108 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:44:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:44:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1152011901, now seen corresponding path program 5 times [2024-06-20 16:44:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:44:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164957850] [2024-06-20 16:44:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:44:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:44:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:44:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:44:51,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:44:51,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164957850] [2024-06-20 16:44:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164957850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:44:51,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:44:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:44:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069541960] [2024-06-20 16:44:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:44:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:44:51,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:44:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:44:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:44:52,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:44:52,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 695 transitions, 9772 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:44:52,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:44:52,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:44:52,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:44:54,548 INFO L124 PetriNetUnfolderBase]: 5419/8349 cut-off events. [2024-06-20 16:44:54,548 INFO L125 PetriNetUnfolderBase]: For 927889/927895 co-relation queries the response was YES. [2024-06-20 16:44:54,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71457 conditions, 8349 events. 5419/8349 cut-off events. For 927889/927895 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 50597 event pairs, 1544 based on Foata normal form. 8/8355 useless extension candidates. Maximal degree in co-relation 71231. Up to 8030 conditions per place. [2024-06-20 16:44:54,718 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 607 selfloop transitions, 110 changer transitions 0/720 dead transitions. [2024-06-20 16:44:54,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 720 transitions, 11448 flow [2024-06-20 16:44:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:44:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:44:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-20 16:44:54,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-20 16:44:54,719 INFO L175 Difference]: Start difference. First operand has 487 places, 695 transitions, 9772 flow. Second operand 9 states and 137 transitions. [2024-06-20 16:44:54,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 720 transitions, 11448 flow [2024-06-20 16:45:00,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 720 transitions, 10976 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 16:45:00,349 INFO L231 Difference]: Finished difference. Result has 487 places, 699 transitions, 9679 flow [2024-06-20 16:45:00,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9320, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9679, PETRI_PLACES=487, PETRI_TRANSITIONS=699} [2024-06-20 16:45:00,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-20 16:45:00,350 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 699 transitions, 9679 flow [2024-06-20 16:45:00,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:00,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:00,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:00,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:45:00,351 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:00,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1502564264, now seen corresponding path program 5 times [2024-06-20 16:45:00,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:00,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606648445] [2024-06-20 16:45:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:00,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606648445] [2024-06-20 16:45:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606648445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:01,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54151579] [2024-06-20 16:45:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:01,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:01,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 699 transitions, 9679 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:01,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:01,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:01,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:03,883 INFO L124 PetriNetUnfolderBase]: 5471/8420 cut-off events. [2024-06-20 16:45:03,883 INFO L125 PetriNetUnfolderBase]: For 950617/950629 co-relation queries the response was YES. [2024-06-20 16:45:04,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72450 conditions, 8420 events. 5471/8420 cut-off events. For 950617/950629 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 50926 event pairs, 1133 based on Foata normal form. 16/8432 useless extension candidates. Maximal degree in co-relation 72224. Up to 7699 conditions per place. [2024-06-20 16:45:04,299 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 559 selfloop transitions, 174 changer transitions 0/736 dead transitions. [2024-06-20 16:45:04,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 736 transitions, 11797 flow [2024-06-20 16:45:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:45:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:45:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-20 16:45:04,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-06-20 16:45:04,300 INFO L175 Difference]: Start difference. First operand has 487 places, 699 transitions, 9679 flow. Second operand 10 states and 159 transitions. [2024-06-20 16:45:04,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 736 transitions, 11797 flow [2024-06-20 16:45:09,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 736 transitions, 11581 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:45:09,140 INFO L231 Difference]: Finished difference. Result has 491 places, 705 transitions, 10046 flow [2024-06-20 16:45:09,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10046, PETRI_PLACES=491, PETRI_TRANSITIONS=705} [2024-06-20 16:45:09,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-20 16:45:09,141 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 705 transitions, 10046 flow [2024-06-20 16:45:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:09,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:09,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:45:09,141 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:09,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1502414534, now seen corresponding path program 6 times [2024-06-20 16:45:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147517173] [2024-06-20 16:45:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:10,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:10,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147517173] [2024-06-20 16:45:10,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147517173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:10,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:10,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59771222] [2024-06-20 16:45:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:10,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:10,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:10,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 705 transitions, 10046 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:10,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:10,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:10,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:12,931 INFO L124 PetriNetUnfolderBase]: 5491/8449 cut-off events. [2024-06-20 16:45:12,931 INFO L125 PetriNetUnfolderBase]: For 959536/959548 co-relation queries the response was YES. [2024-06-20 16:45:13,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73545 conditions, 8449 events. 5491/8449 cut-off events. For 959536/959548 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 51134 event pairs, 1162 based on Foata normal form. 16/8461 useless extension candidates. Maximal degree in co-relation 73319. Up to 7953 conditions per place. [2024-06-20 16:45:13,094 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 593 selfloop transitions, 141 changer transitions 0/737 dead transitions. [2024-06-20 16:45:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 737 transitions, 11836 flow [2024-06-20 16:45:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:45:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:45:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-20 16:45:13,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-06-20 16:45:13,095 INFO L175 Difference]: Start difference. First operand has 491 places, 705 transitions, 10046 flow. Second operand 10 states and 154 transitions. [2024-06-20 16:45:13,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 737 transitions, 11836 flow [2024-06-20 16:45:19,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 737 transitions, 11471 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-20 16:45:19,307 INFO L231 Difference]: Finished difference. Result has 494 places, 708 transitions, 10094 flow [2024-06-20 16:45:19,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9721, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10094, PETRI_PLACES=494, PETRI_TRANSITIONS=708} [2024-06-20 16:45:19,308 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-20 16:45:19,308 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 708 transitions, 10094 flow [2024-06-20 16:45:19,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:19,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:19,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:45:19,308 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:19,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1295493967, now seen corresponding path program 2 times [2024-06-20 16:45:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122996255] [2024-06-20 16:45:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122996255] [2024-06-20 16:45:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122996255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:20,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:20,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:20,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089746349] [2024-06-20 16:45:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:20,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:20,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:20,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 708 transitions, 10094 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:20,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:20,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:20,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:22,804 INFO L124 PetriNetUnfolderBase]: 5501/8460 cut-off events. [2024-06-20 16:45:22,805 INFO L125 PetriNetUnfolderBase]: For 939547/939559 co-relation queries the response was YES. [2024-06-20 16:45:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73279 conditions, 8460 events. 5501/8460 cut-off events. For 939547/939559 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 51092 event pairs, 1269 based on Foata normal form. 14/8470 useless extension candidates. Maximal degree in co-relation 73052. Up to 8156 conditions per place. [2024-06-20 16:45:22,954 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 624 selfloop transitions, 110 changer transitions 0/737 dead transitions. [2024-06-20 16:45:22,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 737 transitions, 11875 flow [2024-06-20 16:45:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:45:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:45:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-20 16:45:22,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:45:22,955 INFO L175 Difference]: Start difference. First operand has 494 places, 708 transitions, 10094 flow. Second operand 9 states and 135 transitions. [2024-06-20 16:45:22,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 737 transitions, 11875 flow [2024-06-20 16:45:30,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 737 transitions, 11536 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-20 16:45:30,048 INFO L231 Difference]: Finished difference. Result has 496 places, 717 transitions, 10243 flow [2024-06-20 16:45:30,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9763, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10243, PETRI_PLACES=496, PETRI_TRANSITIONS=717} [2024-06-20 16:45:30,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-20 16:45:30,049 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 717 transitions, 10243 flow [2024-06-20 16:45:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:30,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:30,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:30,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:45:30,050 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:30,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1295761094, now seen corresponding path program 7 times [2024-06-20 16:45:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:30,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206057303] [2024-06-20 16:45:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206057303] [2024-06-20 16:45:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206057303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:31,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:31,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332232735] [2024-06-20 16:45:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:31,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:31,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:31,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 717 transitions, 10243 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:31,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:31,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:31,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:33,528 INFO L124 PetriNetUnfolderBase]: 5521/8488 cut-off events. [2024-06-20 16:45:33,528 INFO L125 PetriNetUnfolderBase]: For 956118/956130 co-relation queries the response was YES. [2024-06-20 16:45:33,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74232 conditions, 8488 events. 5521/8488 cut-off events. For 956118/956130 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 51304 event pairs, 1267 based on Foata normal form. 16/8500 useless extension candidates. Maximal degree in co-relation 74003. Up to 8141 conditions per place. [2024-06-20 16:45:33,688 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 625 selfloop transitions, 115 changer transitions 0/743 dead transitions. [2024-06-20 16:45:33,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 743 transitions, 11951 flow [2024-06-20 16:45:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:45:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:45:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-20 16:45:33,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-20 16:45:33,689 INFO L175 Difference]: Start difference. First operand has 496 places, 717 transitions, 10243 flow. Second operand 10 states and 148 transitions. [2024-06-20 16:45:33,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 743 transitions, 11951 flow [2024-06-20 16:45:39,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 743 transitions, 11754 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-20 16:45:39,409 INFO L231 Difference]: Finished difference. Result has 502 places, 720 transitions, 10373 flow [2024-06-20 16:45:39,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10373, PETRI_PLACES=502, PETRI_TRANSITIONS=720} [2024-06-20 16:45:39,409 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-20 16:45:39,410 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 720 transitions, 10373 flow [2024-06-20 16:45:39,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:39,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:39,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:39,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:45:39,410 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:39,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1267066986, now seen corresponding path program 8 times [2024-06-20 16:45:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:39,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792888508] [2024-06-20 16:45:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:40,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792888508] [2024-06-20 16:45:40,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792888508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:40,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:40,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771105340] [2024-06-20 16:45:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:40,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:40,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 720 transitions, 10373 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:40,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:40,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:40,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:42,907 INFO L124 PetriNetUnfolderBase]: 5595/8595 cut-off events. [2024-06-20 16:45:42,907 INFO L125 PetriNetUnfolderBase]: For 1004185/1004191 co-relation queries the response was YES. [2024-06-20 16:45:43,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76049 conditions, 8595 events. 5595/8595 cut-off events. For 1004185/1004191 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 52012 event pairs, 1563 based on Foata normal form. 10/8603 useless extension candidates. Maximal degree in co-relation 75819. Up to 8310 conditions per place. [2024-06-20 16:45:43,086 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 677 selfloop transitions, 76 changer transitions 0/756 dead transitions. [2024-06-20 16:45:43,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 756 transitions, 12552 flow [2024-06-20 16:45:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:45:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:45:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-20 16:45:43,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-20 16:45:43,087 INFO L175 Difference]: Start difference. First operand has 502 places, 720 transitions, 10373 flow. Second operand 9 states and 143 transitions. [2024-06-20 16:45:43,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 756 transitions, 12552 flow [2024-06-20 16:45:48,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 756 transitions, 12259 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-20 16:45:48,578 INFO L231 Difference]: Finished difference. Result has 503 places, 729 transitions, 10499 flow [2024-06-20 16:45:48,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10086, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10499, PETRI_PLACES=503, PETRI_TRANSITIONS=729} [2024-06-20 16:45:48,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-20 16:45:48,578 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 729 transitions, 10499 flow [2024-06-20 16:45:48,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:48,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:48,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:48,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:45:48,579 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:48,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash -917411795, now seen corresponding path program 1 times [2024-06-20 16:45:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:48,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254682296] [2024-06-20 16:45:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:48,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:49,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254682296] [2024-06-20 16:45:49,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254682296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:49,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962633574] [2024-06-20 16:45:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:49,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:49,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:49,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:49,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 729 transitions, 10499 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:49,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:49,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:45:52,086 INFO L124 PetriNetUnfolderBase]: 5642/8661 cut-off events. [2024-06-20 16:45:52,086 INFO L125 PetriNetUnfolderBase]: For 1005220/1005226 co-relation queries the response was YES. [2024-06-20 16:45:52,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76722 conditions, 8661 events. 5642/8661 cut-off events. For 1005220/1005226 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 52438 event pairs, 1571 based on Foata normal form. 8/8667 useless extension candidates. Maximal degree in co-relation 76491. Up to 8365 conditions per place. [2024-06-20 16:45:52,258 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 670 selfloop transitions, 90 changer transitions 0/763 dead transitions. [2024-06-20 16:45:52,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 763 transitions, 12675 flow [2024-06-20 16:45:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:45:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:45:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-20 16:45:52,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-20 16:45:52,259 INFO L175 Difference]: Start difference. First operand has 503 places, 729 transitions, 10499 flow. Second operand 9 states and 141 transitions. [2024-06-20 16:45:52,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 763 transitions, 12675 flow [2024-06-20 16:45:58,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 763 transitions, 12442 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-20 16:45:58,656 INFO L231 Difference]: Finished difference. Result has 509 places, 741 transitions, 10794 flow [2024-06-20 16:45:58,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10266, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10794, PETRI_PLACES=509, PETRI_TRANSITIONS=741} [2024-06-20 16:45:58,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-20 16:45:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 741 transitions, 10794 flow [2024-06-20 16:45:58,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:58,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:45:58,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:45:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:45:58,657 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:45:58,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:45:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -917412012, now seen corresponding path program 9 times [2024-06-20 16:45:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:45:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174970150] [2024-06-20 16:45:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:45:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:45:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:45:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:45:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:45:59,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174970150] [2024-06-20 16:45:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174970150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:45:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:45:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:45:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765285289] [2024-06-20 16:45:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:45:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:45:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:45:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:45:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:45:59,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:45:59,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 741 transitions, 10794 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:45:59,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:45:59,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:45:59,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:02,512 INFO L124 PetriNetUnfolderBase]: 5662/8689 cut-off events. [2024-06-20 16:46:02,512 INFO L125 PetriNetUnfolderBase]: For 1033605/1033611 co-relation queries the response was YES. [2024-06-20 16:46:02,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77351 conditions, 8689 events. 5662/8689 cut-off events. For 1033605/1033611 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52588 event pairs, 1569 based on Foata normal form. 10/8697 useless extension candidates. Maximal degree in co-relation 77116. Up to 8392 conditions per place. [2024-06-20 16:46:02,675 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 688 selfloop transitions, 78 changer transitions 0/769 dead transitions. [2024-06-20 16:46:02,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 769 transitions, 12829 flow [2024-06-20 16:46:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:46:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:46:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-20 16:46:02,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-20 16:46:02,676 INFO L175 Difference]: Start difference. First operand has 509 places, 741 transitions, 10794 flow. Second operand 9 states and 143 transitions. [2024-06-20 16:46:02,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 769 transitions, 12829 flow [2024-06-20 16:46:09,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 769 transitions, 12629 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-20 16:46:09,671 INFO L231 Difference]: Finished difference. Result has 513 places, 744 transitions, 10825 flow [2024-06-20 16:46:09,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10596, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10825, PETRI_PLACES=513, PETRI_TRANSITIONS=744} [2024-06-20 16:46:09,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-20 16:46:09,672 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 744 transitions, 10825 flow [2024-06-20 16:46:09,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:09,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:09,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:09,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:46:09,672 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:46:09,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash -923102682, now seen corresponding path program 10 times [2024-06-20 16:46:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:09,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809449966] [2024-06-20 16:46:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:10,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:10,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809449966] [2024-06-20 16:46:10,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809449966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:10,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:10,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:46:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963166264] [2024-06-20 16:46:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:10,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:46:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:46:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:46:10,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:46:10,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 744 transitions, 10825 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:10,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:10,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:46:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:13,678 INFO L124 PetriNetUnfolderBase]: 5784/8854 cut-off events. [2024-06-20 16:46:13,678 INFO L125 PetriNetUnfolderBase]: For 1106738/1106744 co-relation queries the response was YES. [2024-06-20 16:46:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80794 conditions, 8854 events. 5784/8854 cut-off events. For 1106738/1106744 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 53440 event pairs, 1010 based on Foata normal form. 10/8860 useless extension candidates. Maximal degree in co-relation 80558. Up to 7401 conditions per place. [2024-06-20 16:46:13,851 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 525 selfloop transitions, 263 changer transitions 0/791 dead transitions. [2024-06-20 16:46:13,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 791 transitions, 13830 flow [2024-06-20 16:46:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:46:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:46:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-20 16:46:13,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-20 16:46:13,852 INFO L175 Difference]: Start difference. First operand has 513 places, 744 transitions, 10825 flow. Second operand 9 states and 154 transitions. [2024-06-20 16:46:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 791 transitions, 13830 flow [2024-06-20 16:46:19,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 791 transitions, 13656 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:46:19,309 INFO L231 Difference]: Finished difference. Result has 518 places, 760 transitions, 11893 flow [2024-06-20 16:46:19,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10651, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11893, PETRI_PLACES=518, PETRI_TRANSITIONS=760} [2024-06-20 16:46:19,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-20 16:46:19,310 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 760 transitions, 11893 flow [2024-06-20 16:46:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:19,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:19,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:46:19,310 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:46:19,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2081442766, now seen corresponding path program 11 times [2024-06-20 16:46:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593244661] [2024-06-20 16:46:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593244661] [2024-06-20 16:46:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593244661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:46:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175145568] [2024-06-20 16:46:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:46:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:46:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:46:20,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:46:20,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 760 transitions, 11893 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:20,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:20,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:46:20,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:23,111 INFO L124 PetriNetUnfolderBase]: 5804/8882 cut-off events. [2024-06-20 16:46:23,112 INFO L125 PetriNetUnfolderBase]: For 1137420/1137426 co-relation queries the response was YES. [2024-06-20 16:46:23,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83211 conditions, 8882 events. 5804/8882 cut-off events. For 1137420/1137426 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 53596 event pairs, 1017 based on Foata normal form. 10/8888 useless extension candidates. Maximal degree in co-relation 82972. Up to 7417 conditions per place. [2024-06-20 16:46:23,302 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 519 selfloop transitions, 268 changer transitions 0/790 dead transitions. [2024-06-20 16:46:23,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 790 transitions, 14272 flow [2024-06-20 16:46:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:46:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:46:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-20 16:46:23,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-20 16:46:23,303 INFO L175 Difference]: Start difference. First operand has 518 places, 760 transitions, 11893 flow. Second operand 9 states and 150 transitions. [2024-06-20 16:46:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 790 transitions, 14272 flow [2024-06-20 16:46:29,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 790 transitions, 13898 flow, removed 143 selfloop flow, removed 3 redundant places. [2024-06-20 16:46:29,603 INFO L231 Difference]: Finished difference. Result has 524 places, 763 transitions, 12183 flow [2024-06-20 16:46:29,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11573, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12183, PETRI_PLACES=524, PETRI_TRANSITIONS=763} [2024-06-20 16:46:29,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-20 16:46:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 763 transitions, 12183 flow [2024-06-20 16:46:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:29,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:29,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:46:29,605 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:46:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2081801467, now seen corresponding path program 1 times [2024-06-20 16:46:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806070431] [2024-06-20 16:46:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:30,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:30,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806070431] [2024-06-20 16:46:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806070431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:30,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:30,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:46:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757615692] [2024-06-20 16:46:30,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:30,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:46:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:46:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:46:30,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:46:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 763 transitions, 12183 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:30,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:30,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:46:30,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:33,614 INFO L124 PetriNetUnfolderBase]: 5812/8899 cut-off events. [2024-06-20 16:46:33,614 INFO L125 PetriNetUnfolderBase]: For 1132452/1132458 co-relation queries the response was YES. [2024-06-20 16:46:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83255 conditions, 8899 events. 5812/8899 cut-off events. For 1132452/1132458 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 53920 event pairs, 1624 based on Foata normal form. 8/8905 useless extension candidates. Maximal degree in co-relation 83014. Up to 8741 conditions per place. [2024-06-20 16:46:33,790 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 726 selfloop transitions, 52 changer transitions 0/781 dead transitions. [2024-06-20 16:46:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 781 transitions, 13901 flow [2024-06-20 16:46:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:46:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:46:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-20 16:46:33,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:46:33,791 INFO L175 Difference]: Start difference. First operand has 524 places, 763 transitions, 12183 flow. Second operand 8 states and 120 transitions. [2024-06-20 16:46:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 781 transitions, 13901 flow [2024-06-20 16:46:39,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 781 transitions, 13505 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 16:46:39,727 INFO L231 Difference]: Finished difference. Result has 526 places, 765 transitions, 11968 flow [2024-06-20 16:46:39,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11787, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11968, PETRI_PLACES=526, PETRI_TRANSITIONS=765} [2024-06-20 16:46:39,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-20 16:46:39,728 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 765 transitions, 11968 flow [2024-06-20 16:46:39,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:39,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:39,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:46:39,728 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:46:39,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2081794306, now seen corresponding path program 12 times [2024-06-20 16:46:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787588772] [2024-06-20 16:46:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787588772] [2024-06-20 16:46:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787588772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:46:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781523671] [2024-06-20 16:46:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:40,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:46:40,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:46:40,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:46:40,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:46:40,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 765 transitions, 11968 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:40,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:40,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:46:40,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:43,289 INFO L124 PetriNetUnfolderBase]: 5832/8927 cut-off events. [2024-06-20 16:46:43,289 INFO L125 PetriNetUnfolderBase]: For 1163760/1163766 co-relation queries the response was YES. [2024-06-20 16:46:43,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82932 conditions, 8927 events. 5832/8927 cut-off events. For 1163760/1163766 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 54046 event pairs, 1626 based on Foata normal form. 10/8935 useless extension candidates. Maximal degree in co-relation 82690. Up to 8747 conditions per place. [2024-06-20 16:46:43,468 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 727 selfloop transitions, 57 changer transitions 0/787 dead transitions. [2024-06-20 16:46:43,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 787 transitions, 13770 flow [2024-06-20 16:46:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:46:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:46:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-20 16:46:43,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-20 16:46:43,469 INFO L175 Difference]: Start difference. First operand has 526 places, 765 transitions, 11968 flow. Second operand 9 states and 134 transitions. [2024-06-20 16:46:43,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 787 transitions, 13770 flow [2024-06-20 16:46:50,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 787 transitions, 13615 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 16:46:51,000 INFO L231 Difference]: Finished difference. Result has 529 places, 768 transitions, 12015 flow [2024-06-20 16:46:51,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11813, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12015, PETRI_PLACES=529, PETRI_TRANSITIONS=768} [2024-06-20 16:46:51,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-20 16:46:51,001 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 768 transitions, 12015 flow [2024-06-20 16:46:51,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:51,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:46:51,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:46:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:46:51,001 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:46:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:46:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -912775962, now seen corresponding path program 13 times [2024-06-20 16:46:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:46:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435087803] [2024-06-20 16:46:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:46:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:46:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:46:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:46:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:46:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435087803] [2024-06-20 16:46:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435087803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:46:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:46:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:46:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28683949] [2024-06-20 16:46:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:46:52,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:46:52,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:46:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:46:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:46:52,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:46:52,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 768 transitions, 12015 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:46:52,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:46:52,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:46:52,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:46:54,970 INFO L124 PetriNetUnfolderBase]: 5868/8972 cut-off events. [2024-06-20 16:46:54,970 INFO L125 PetriNetUnfolderBase]: For 1193846/1193852 co-relation queries the response was YES. [2024-06-20 16:46:55,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83865 conditions, 8972 events. 5868/8972 cut-off events. For 1193846/1193852 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 54113 event pairs, 1010 based on Foata normal form. 10/8978 useless extension candidates. Maximal degree in co-relation 83622. Up to 7476 conditions per place. [2024-06-20 16:46:55,199 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 511 selfloop transitions, 286 changer transitions 0/800 dead transitions. [2024-06-20 16:46:55,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 800 transitions, 14473 flow [2024-06-20 16:46:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:46:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:46:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-20 16:46:55,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-20 16:46:55,200 INFO L175 Difference]: Start difference. First operand has 529 places, 768 transitions, 12015 flow. Second operand 9 states and 148 transitions. [2024-06-20 16:46:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 800 transitions, 14473 flow [2024-06-20 16:47:02,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 800 transitions, 14311 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-20 16:47:02,664 INFO L231 Difference]: Finished difference. Result has 531 places, 774 transitions, 12608 flow [2024-06-20 16:47:02,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11853, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12608, PETRI_PLACES=531, PETRI_TRANSITIONS=774} [2024-06-20 16:47:02,665 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-20 16:47:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 774 transitions, 12608 flow [2024-06-20 16:47:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:02,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:47:02,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:47:02,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:47:02,665 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:47:02,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:47:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1267251343, now seen corresponding path program 2 times [2024-06-20 16:47:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:47:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785234416] [2024-06-20 16:47:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:47:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:47:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:47:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:47:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:47:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785234416] [2024-06-20 16:47:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785234416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:47:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:47:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:47:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598063946] [2024-06-20 16:47:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:47:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:47:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:47:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:47:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:47:03,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:47:03,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 774 transitions, 12608 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:03,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:47:03,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:47:03,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:47:06,922 INFO L124 PetriNetUnfolderBase]: 5878/8991 cut-off events. [2024-06-20 16:47:06,922 INFO L125 PetriNetUnfolderBase]: For 1207493/1207499 co-relation queries the response was YES. [2024-06-20 16:47:07,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85042 conditions, 8991 events. 5878/8991 cut-off events. For 1207493/1207499 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 54424 event pairs, 1635 based on Foata normal form. 8/8997 useless extension candidates. Maximal degree in co-relation 84798. Up to 8811 conditions per place. [2024-06-20 16:47:07,107 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 732 selfloop transitions, 60 changer transitions 0/795 dead transitions. [2024-06-20 16:47:07,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 795 transitions, 14423 flow [2024-06-20 16:47:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:47:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:47:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-20 16:47:07,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-20 16:47:07,108 INFO L175 Difference]: Start difference. First operand has 531 places, 774 transitions, 12608 flow. Second operand 9 states and 134 transitions. [2024-06-20 16:47:07,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 795 transitions, 14423 flow [2024-06-20 16:47:14,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 795 transitions, 14052 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-20 16:47:14,102 INFO L231 Difference]: Finished difference. Result has 535 places, 777 transitions, 12462 flow [2024-06-20 16:47:14,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12237, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12462, PETRI_PLACES=535, PETRI_TRANSITIONS=777} [2024-06-20 16:47:14,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-20 16:47:14,103 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 777 transitions, 12462 flow [2024-06-20 16:47:14,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:14,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:47:14,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:47:14,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:47:14,103 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:47:14,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:47:14,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1494310491, now seen corresponding path program 6 times [2024-06-20 16:47:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:47:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464487475] [2024-06-20 16:47:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:47:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:47:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:47:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:47:15,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:47:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464487475] [2024-06-20 16:47:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464487475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:47:15,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:47:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:47:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404744342] [2024-06-20 16:47:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:47:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:47:15,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:47:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:47:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:47:15,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:47:15,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 777 transitions, 12462 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:15,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:47:15,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:47:15,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:47:18,276 INFO L124 PetriNetUnfolderBase]: 5872/8978 cut-off events. [2024-06-20 16:47:18,276 INFO L125 PetriNetUnfolderBase]: For 1206058/1206064 co-relation queries the response was YES. [2024-06-20 16:47:18,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83966 conditions, 8978 events. 5872/8978 cut-off events. For 1206058/1206064 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 54200 event pairs, 1195 based on Foata normal form. 8/8982 useless extension candidates. Maximal degree in co-relation 83721. Up to 8692 conditions per place. [2024-06-20 16:47:18,459 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 695 selfloop transitions, 90 changer transitions 0/788 dead transitions. [2024-06-20 16:47:18,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 788 transitions, 14102 flow [2024-06-20 16:47:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:47:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:47:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-20 16:47:18,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892857142857143 [2024-06-20 16:47:18,460 INFO L175 Difference]: Start difference. First operand has 535 places, 777 transitions, 12462 flow. Second operand 7 states and 109 transitions. [2024-06-20 16:47:18,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 788 transitions, 14102 flow [2024-06-20 16:47:25,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 788 transitions, 13856 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-20 16:47:25,992 INFO L231 Difference]: Finished difference. Result has 534 places, 777 transitions, 12410 flow [2024-06-20 16:47:25,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12216, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12410, PETRI_PLACES=534, PETRI_TRANSITIONS=777} [2024-06-20 16:47:25,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 493 predicate places. [2024-06-20 16:47:25,993 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 777 transitions, 12410 flow [2024-06-20 16:47:25,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:47:25,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:47:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:47:25,993 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:47:25,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:47:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1494400856, now seen corresponding path program 14 times [2024-06-20 16:47:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:47:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043657400] [2024-06-20 16:47:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:47:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:47:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:47:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:47:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:47:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043657400] [2024-06-20 16:47:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043657400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:47:26,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:47:26,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:47:26,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664837445] [2024-06-20 16:47:26,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:47:26,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:47:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:47:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:47:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:47:26,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:47:26,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 777 transitions, 12410 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:26,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:47:26,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:47:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:47:30,147 INFO L124 PetriNetUnfolderBase]: 5860/8962 cut-off events. [2024-06-20 16:47:30,147 INFO L125 PetriNetUnfolderBase]: For 1207893/1207899 co-relation queries the response was YES. [2024-06-20 16:47:30,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83363 conditions, 8962 events. 5860/8962 cut-off events. For 1207893/1207899 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 54086 event pairs, 1189 based on Foata normal form. 10/8968 useless extension candidates. Maximal degree in co-relation 83117. Up to 8656 conditions per place. [2024-06-20 16:47:30,313 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 697 selfloop transitions, 91 changer transitions 0/791 dead transitions. [2024-06-20 16:47:30,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 791 transitions, 14096 flow [2024-06-20 16:47:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:47:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:47:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-20 16:47:30,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-20 16:47:30,315 INFO L175 Difference]: Start difference. First operand has 534 places, 777 transitions, 12410 flow. Second operand 8 states and 121 transitions. [2024-06-20 16:47:30,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 791 transitions, 14096 flow [2024-06-20 16:47:37,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 791 transitions, 13774 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-20 16:47:37,955 INFO L231 Difference]: Finished difference. Result has 535 places, 777 transitions, 12277 flow [2024-06-20 16:47:37,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12088, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12277, PETRI_PLACES=535, PETRI_TRANSITIONS=777} [2024-06-20 16:47:37,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-20 16:47:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 777 transitions, 12277 flow [2024-06-20 16:47:37,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:37,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:47:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:47:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:47:37,956 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:47:37,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:47:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1494667983, now seen corresponding path program 3 times [2024-06-20 16:47:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:47:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500732976] [2024-06-20 16:47:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:47:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:47:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:47:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:47:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:47:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500732976] [2024-06-20 16:47:38,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500732976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:47:38,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:47:38,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:47:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956481315] [2024-06-20 16:47:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:47:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:47:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:47:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:47:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:47:38,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:47:38,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 777 transitions, 12277 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:38,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:47:38,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:47:38,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:47:42,123 INFO L124 PetriNetUnfolderBase]: 5862/8965 cut-off events. [2024-06-20 16:47:42,123 INFO L125 PetriNetUnfolderBase]: For 1185389/1185395 co-relation queries the response was YES. [2024-06-20 16:47:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83091 conditions, 8965 events. 5862/8965 cut-off events. For 1185389/1185395 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 54115 event pairs, 1211 based on Foata normal form. 8/8969 useless extension candidates. Maximal degree in co-relation 82845. Up to 8681 conditions per place. [2024-06-20 16:47:42,282 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 698 selfloop transitions, 90 changer transitions 0/791 dead transitions. [2024-06-20 16:47:42,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 791 transitions, 14044 flow [2024-06-20 16:47:42,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:47:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:47:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-20 16:47:42,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-20 16:47:42,283 INFO L175 Difference]: Start difference. First operand has 535 places, 777 transitions, 12277 flow. Second operand 7 states and 108 transitions. [2024-06-20 16:47:42,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 791 transitions, 14044 flow [2024-06-20 16:47:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 791 transitions, 13787 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:47:50,165 INFO L231 Difference]: Finished difference. Result has 535 places, 780 transitions, 12341 flow [2024-06-20 16:47:50,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12020, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12341, PETRI_PLACES=535, PETRI_TRANSITIONS=780} [2024-06-20 16:47:50,166 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-20 16:47:50,166 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 780 transitions, 12341 flow [2024-06-20 16:47:50,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:50,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:47:50,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:47:50,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:47:50,166 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:47:50,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:47:50,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1506703547, now seen corresponding path program 2 times [2024-06-20 16:47:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:47:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470454466] [2024-06-20 16:47:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:47:50,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:47:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:47:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:47:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:47:51,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470454466] [2024-06-20 16:47:51,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470454466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:47:51,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:47:51,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:47:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463208546] [2024-06-20 16:47:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:47:51,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:47:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:47:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:47:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:47:51,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:47:51,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 780 transitions, 12341 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:47:51,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:47:51,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:47:51,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:47:54,242 INFO L124 PetriNetUnfolderBase]: 5870/8980 cut-off events. [2024-06-20 16:47:54,242 INFO L125 PetriNetUnfolderBase]: For 1205375/1205381 co-relation queries the response was YES. [2024-06-20 16:47:54,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83289 conditions, 8980 events. 5870/8980 cut-off events. For 1205375/1205381 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 54377 event pairs, 1705 based on Foata normal form. 8/8986 useless extension candidates. Maximal degree in co-relation 83042. Up to 8857 conditions per place. [2024-06-20 16:47:54,398 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 750 selfloop transitions, 40 changer transitions 0/793 dead transitions. [2024-06-20 16:47:54,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 793 transitions, 14025 flow [2024-06-20 16:47:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:47:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:47:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-20 16:47:54,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-06-20 16:47:54,399 INFO L175 Difference]: Start difference. First operand has 535 places, 780 transitions, 12341 flow. Second operand 7 states and 103 transitions. [2024-06-20 16:47:54,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 793 transitions, 14025 flow [2024-06-20 16:48:01,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 793 transitions, 13779 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-20 16:48:01,663 INFO L231 Difference]: Finished difference. Result has 537 places, 782 transitions, 12256 flow [2024-06-20 16:48:01,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12095, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12256, PETRI_PLACES=537, PETRI_TRANSITIONS=782} [2024-06-20 16:48:01,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 496 predicate places. [2024-06-20 16:48:01,664 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 782 transitions, 12256 flow [2024-06-20 16:48:01,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:01,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:48:01,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:48:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:48:01,664 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:48:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:48:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1498132667, now seen corresponding path program 3 times [2024-06-20 16:48:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:48:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295771146] [2024-06-20 16:48:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:48:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:48:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:48:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:48:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:48:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295771146] [2024-06-20 16:48:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295771146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:48:02,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:48:02,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:48:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455559738] [2024-06-20 16:48:02,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:48:02,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:48:02,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:48:02,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:48:02,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:48:02,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:48:02,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 782 transitions, 12256 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:02,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:48:02,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:48:02,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:48:05,783 INFO L124 PetriNetUnfolderBase]: 5878/8992 cut-off events. [2024-06-20 16:48:05,783 INFO L125 PetriNetUnfolderBase]: For 1223746/1223752 co-relation queries the response was YES. [2024-06-20 16:48:06,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83439 conditions, 8992 events. 5878/8992 cut-off events. For 1223746/1223752 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 54467 event pairs, 1713 based on Foata normal form. 8/8998 useless extension candidates. Maximal degree in co-relation 83191. Up to 8884 conditions per place. [2024-06-20 16:48:06,092 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 756 selfloop transitions, 36 changer transitions 0/795 dead transitions. [2024-06-20 16:48:06,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 795 transitions, 13968 flow [2024-06-20 16:48:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:48:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:48:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-20 16:48:06,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429 [2024-06-20 16:48:06,093 INFO L175 Difference]: Start difference. First operand has 537 places, 782 transitions, 12256 flow. Second operand 7 states and 103 transitions. [2024-06-20 16:48:06,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 795 transitions, 13968 flow [2024-06-20 16:48:14,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 795 transitions, 13853 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-20 16:48:14,388 INFO L231 Difference]: Finished difference. Result has 540 places, 784 transitions, 12298 flow [2024-06-20 16:48:14,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12141, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12298, PETRI_PLACES=540, PETRI_TRANSITIONS=784} [2024-06-20 16:48:14,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-20 16:48:14,388 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 784 transitions, 12298 flow [2024-06-20 16:48:14,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:14,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:48:14,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:48:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:48:14,389 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:48:14,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:48:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1498119926, now seen corresponding path program 15 times [2024-06-20 16:48:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:48:14,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237281183] [2024-06-20 16:48:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:48:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:48:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:48:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:48:15,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:48:15,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237281183] [2024-06-20 16:48:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237281183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:48:15,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:48:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:48:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529312574] [2024-06-20 16:48:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:48:15,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:48:15,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:48:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:48:15,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:48:15,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:48:15,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 784 transitions, 12298 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:48:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:48:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:48:18,473 INFO L124 PetriNetUnfolderBase]: 5866/8973 cut-off events. [2024-06-20 16:48:18,474 INFO L125 PetriNetUnfolderBase]: For 1224883/1224889 co-relation queries the response was YES. [2024-06-20 16:48:18,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82953 conditions, 8973 events. 5866/8973 cut-off events. For 1224883/1224889 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 54200 event pairs, 1186 based on Foata normal form. 10/8979 useless extension candidates. Maximal degree in co-relation 82704. Up to 8316 conditions per place. [2024-06-20 16:48:18,631 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 650 selfloop transitions, 151 changer transitions 0/804 dead transitions. [2024-06-20 16:48:18,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 804 transitions, 14554 flow [2024-06-20 16:48:18,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:48:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:48:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-20 16:48:18,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:48:18,632 INFO L175 Difference]: Start difference. First operand has 540 places, 784 transitions, 12298 flow. Second operand 8 states and 128 transitions. [2024-06-20 16:48:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 804 transitions, 14554 flow [2024-06-20 16:48:26,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 804 transitions, 14375 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-20 16:48:26,788 INFO L231 Difference]: Finished difference. Result has 543 places, 784 transitions, 12428 flow [2024-06-20 16:48:26,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12119, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12428, PETRI_PLACES=543, PETRI_TRANSITIONS=784} [2024-06-20 16:48:26,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 502 predicate places. [2024-06-20 16:48:26,789 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 784 transitions, 12428 flow [2024-06-20 16:48:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:26,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:48:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:48:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:48:26,789 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:48:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:48:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1498363059, now seen corresponding path program 1 times [2024-06-20 16:48:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:48:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420141793] [2024-06-20 16:48:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:48:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:48:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:48:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:48:27,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:48:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420141793] [2024-06-20 16:48:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420141793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:48:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:48:27,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:48:27,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123002508] [2024-06-20 16:48:27,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:48:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:48:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:48:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:48:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:48:27,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-20 16:48:27,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 784 transitions, 12428 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:48:27,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:48:27,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-20 16:48:27,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:48:30,854 INFO L124 PetriNetUnfolderBase]: 5863/8972 cut-off events. [2024-06-20 16:48:30,854 INFO L125 PetriNetUnfolderBase]: For 1215374/1215380 co-relation queries the response was YES. [2024-06-20 16:48:30,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83085 conditions, 8972 events. 5863/8972 cut-off events. For 1215374/1215380 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 54440 event pairs, 1695 based on Foata normal form. 7/8977 useless extension candidates. Maximal degree in co-relation 82835. Up to 8833 conditions per place. [2024-06-20 16:48:31,017 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 738 selfloop transitions, 56 changer transitions 0/797 dead transitions. [2024-06-20 16:48:31,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 797 transitions, 14180 flow [2024-06-20 16:48:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:48:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:48:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-20 16:48:31,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:48:31,018 INFO L175 Difference]: Start difference. First operand has 543 places, 784 transitions, 12428 flow. Second operand 7 states and 105 transitions. [2024-06-20 16:48:31,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 797 transitions, 14180 flow