./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011.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/mix011.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix011.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix011.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-bcb38a6-m [2024-06-04 14:40:09,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:40:09,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:40:09,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:40:09,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:40:09,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:40:09,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:40:09,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:40:09,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:40:09,201 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:40:09,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:40:09,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:40:09,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:40:09,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:40:09,208 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:40:09,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:40:09,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:40:09,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:40:09,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:40:09,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:40:09,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:40:09,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:40:09,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:40:09,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:40:09,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:40:09,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:40:09,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:40:09,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:40:09,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:40:09,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:40:09,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:40:09,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:40:09,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:40:09,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:40:09,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:40:09,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:40:09,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:40:09,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:40:09,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:40:09,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:40:09,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:40:09,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:40:09,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:40:09,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:40:09,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:40:09,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:40:09,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:40:09,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:40:09,428 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:40:09,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011.opt.i [2024-06-04 14:40:10,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:40:10,700 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:40:10,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011.opt.i [2024-06-04 14:40:10,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0058efe97/78e2c7fbb11f48d3b38670badcb3978e/FLAGefafb1bcc [2024-06-04 14:40:10,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0058efe97/78e2c7fbb11f48d3b38670badcb3978e [2024-06-04 14:40:10,731 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:40:10,732 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:40:10,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix011.opt.yml/witness.yml [2024-06-04 14:40:10,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:40:10,899 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:40:10,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:40:10,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:40:10,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:40:10,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:40:10" (1/2) ... [2024-06-04 14:40:10,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331840fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:40:10, skipping insertion in model container [2024-06-04 14:40:10,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:40:10" (1/2) ... [2024-06-04 14:40:10,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ac9540b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:40:10, skipping insertion in model container [2024-06-04 14:40:10,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:40:10" (2/2) ... [2024-06-04 14:40:10,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331840fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:10, skipping insertion in model container [2024-06-04 14:40:10,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:40:10" (2/2) ... [2024-06-04 14:40:10,908 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:40:10,997 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:40:10,999 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-04 14:40:10,999 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-04 14:40:10,999 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-04 14:40:10,999 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:40:10,999 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-04 14:40:11,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:40:11,360 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:40:11,370 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:40:11,481 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:40:11,519 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:40:11,520 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11 WrapperNode [2024-06-04 14:40:11,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:40:11,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:40:11,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:40:11,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:40:11,526 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 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,539 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 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,563 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2024-06-04 14:40:11,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:40:11,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:40:11,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:40:11,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:40:11,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,597 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]. [2024-06-04 14:40:11,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:40:11,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:40:11,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:40:11,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:40:11,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (1/1) ... [2024-06-04 14:40:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:40:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:40:11,648 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) [2024-06-04 14:40:11,661 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 [2024-06-04 14:40:11,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:40:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:40:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:40:11,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:40:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:40:11,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:40:11,685 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 14:40:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 14:40:11,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:40:11,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:40:11,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:40:11,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:40:11,687 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:40:11,817 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:40:11,818 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:40:12,065 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:40:12,065 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:40:12,230 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:40:12,230 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:40:12,231 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:40:12 BoogieIcfgContainer [2024-06-04 14:40:12,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:40:12,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:40:12,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:40:12,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:40:12,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:40:10" (1/4) ... [2024-06-04 14:40:12,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd564e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:40:12, skipping insertion in model container [2024-06-04 14:40:12,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:40:10" (2/4) ... [2024-06-04 14:40:12,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd564e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:40:12, skipping insertion in model container [2024-06-04 14:40:12,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:40:11" (3/4) ... [2024-06-04 14:40:12,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cd564e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:40:12, skipping insertion in model container [2024-06-04 14:40:12,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:40:12" (4/4) ... [2024-06-04 14:40:12,240 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011.opt.i [2024-06-04 14:40:12,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:40:12,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:40:12,253 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:40:12,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:40:12,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:40:12,359 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-04 14:40:12,359 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:40:12,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:40:12,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:40:12,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-04 14:40:12,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:40:12,414 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;@558d3516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:40:12,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:40:12,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:40:12,418 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:40:12,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:40:12,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:12,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:40:12,418 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)] === [2024-06-04 14:40:12,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash -456574516, now seen corresponding path program 1 times [2024-06-04 14:40:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:12,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623366629] [2024-06-04 14:40:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623366629] [2024-06-04 14:40:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623366629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:40:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052048551] [2024-06-04 14:40:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:13,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:40:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:40:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:40:13,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:40:13,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:13,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:13,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:40:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:14,141 INFO L124 PetriNetUnfolderBase]: 1359/2140 cut-off events. [2024-06-04 14:40:14,141 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-04 14:40:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4256 conditions, 2140 events. 1359/2140 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11006 event pairs, 941 based on Foata normal form. 1/2063 useless extension candidates. Maximal degree in co-relation 4241. Up to 2029 conditions per place. [2024-06-04 14:40:14,158 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-04 14:40:14,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 181 flow [2024-06-04 14:40:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:40:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:40:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 14:40:14,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-04 14:40:14,169 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 80 transitions. [2024-06-04 14:40:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 181 flow [2024-06-04 14:40:14,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:14,175 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-04 14:40:14,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-04 14:40:14,179 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-04 14:40:14,180 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-04 14:40:14,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:14,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:14,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:14,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:40:14,181 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)] === [2024-06-04 14:40:14,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:14,182 INFO L85 PathProgramCache]: Analyzing trace with hash -681415701, now seen corresponding path program 1 times [2024-06-04 14:40:14,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315514337] [2024-06-04 14:40:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:15,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:15,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315514337] [2024-06-04 14:40:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315514337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:15,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:15,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:40:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117870662] [2024-06-04 14:40:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:15,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:40:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:40:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:40:15,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:15,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:15,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:15,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:15,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:15,613 INFO L124 PetriNetUnfolderBase]: 1560/2388 cut-off events. [2024-06-04 14:40:15,613 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-06-04 14:40:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 2388 events. 1560/2388 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11944 event pairs, 930 based on Foata normal form. 3/2380 useless extension candidates. Maximal degree in co-relation 5391. Up to 2302 conditions per place. [2024-06-04 14:40:15,625 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 42 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 14:40:15,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 250 flow [2024-06-04 14:40:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:40:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:40:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-04 14:40:15,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-06-04 14:40:15,628 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 100 transitions. [2024-06-04 14:40:15,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 250 flow [2024-06-04 14:40:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:40:15,630 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-04 14:40:15,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-04 14:40:15,630 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-04 14:40:15,631 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-04 14:40:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:15,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:15,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:40:15,632 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)] === [2024-06-04 14:40:15,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash 350950747, now seen corresponding path program 1 times [2024-06-04 14:40:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483166603] [2024-06-04 14:40:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483166603] [2024-06-04 14:40:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483166603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:16,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:40:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521302900] [2024-06-04 14:40:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:40:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:40:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:40:16,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:17,144 INFO L124 PetriNetUnfolderBase]: 1568/2456 cut-off events. [2024-06-04 14:40:17,144 INFO L125 PetriNetUnfolderBase]: For 1364/1364 co-relation queries the response was YES. [2024-06-04 14:40:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6091 conditions, 2456 events. 1568/2456 cut-off events. For 1364/1364 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12655 event pairs, 669 based on Foata normal form. 5/2458 useless extension candidates. Maximal degree in co-relation 6074. Up to 2248 conditions per place. [2024-06-04 14:40:17,156 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 55 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-06-04 14:40:17,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 404 flow [2024-06-04 14:40:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:40:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:40:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-04 14:40:17,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-06-04 14:40:17,159 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 130 transitions. [2024-06-04 14:40:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 404 flow [2024-06-04 14:40:17,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 390 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:40:17,162 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 241 flow [2024-06-04 14:40:17,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=5, PETRI_FLOW=241, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-06-04 14:40:17,162 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-04 14:40:17,162 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 241 flow [2024-06-04 14:40:17,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:17,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:17,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:40:17,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:17,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2038715558, now seen corresponding path program 1 times [2024-06-04 14:40:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060196251] [2024-06-04 14:40:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:18,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:18,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060196251] [2024-06-04 14:40:18,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060196251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:18,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:18,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:40:18,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229988498] [2024-06-04 14:40:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:18,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:40:18,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:40:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:40:18,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:18,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:18,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:18,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:18,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:19,031 INFO L124 PetriNetUnfolderBase]: 1580/2476 cut-off events. [2024-06-04 14:40:19,031 INFO L125 PetriNetUnfolderBase]: For 3221/3223 co-relation queries the response was YES. [2024-06-04 14:40:19,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7235 conditions, 2476 events. 1580/2476 cut-off events. For 3221/3223 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12818 event pairs, 481 based on Foata normal form. 12/2485 useless extension candidates. Maximal degree in co-relation 7215. Up to 2216 conditions per place. [2024-06-04 14:40:19,045 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 59 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-04 14:40:19,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 507 flow [2024-06-04 14:40:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-04 14:40:19,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-06-04 14:40:19,047 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 241 flow. Second operand 6 states and 149 transitions. [2024-06-04 14:40:19,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 507 flow [2024-06-04 14:40:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 499 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-04 14:40:19,051 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 297 flow [2024-06-04 14:40:19,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-04 14:40:19,052 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-06-04 14:40:19,052 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 297 flow [2024-06-04 14:40:19,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:19,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:19,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:40:19,053 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)] === [2024-06-04 14:40:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1789071829, now seen corresponding path program 1 times [2024-06-04 14:40:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059906717] [2024-06-04 14:40:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:19,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059906717] [2024-06-04 14:40:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059906717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:19,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:40:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788397961] [2024-06-04 14:40:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:40:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:40:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:40:19,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:19,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:19,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:19,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:19,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:20,100 INFO L124 PetriNetUnfolderBase]: 1368/2207 cut-off events. [2024-06-04 14:40:20,100 INFO L125 PetriNetUnfolderBase]: For 4097/4097 co-relation queries the response was YES. [2024-06-04 14:40:20,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6979 conditions, 2207 events. 1368/2207 cut-off events. For 4097/4097 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11659 event pairs, 562 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 6956. Up to 2036 conditions per place. [2024-06-04 14:40:20,113 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 50 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-06-04 14:40:20,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 441 flow [2024-06-04 14:40:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:40:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:40:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 14:40:20,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-04 14:40:20,115 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 297 flow. Second operand 5 states and 106 transitions. [2024-06-04 14:40:20,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 441 flow [2024-06-04 14:40:20,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 391 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:20,122 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 271 flow [2024-06-04 14:40:20,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-04 14:40:20,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-04 14:40:20,125 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 271 flow [2024-06-04 14:40:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:20,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:20,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:20,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:40:20,128 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)] === [2024-06-04 14:40:20,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash -374644645, now seen corresponding path program 1 times [2024-06-04 14:40:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888656287] [2024-06-04 14:40:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888656287] [2024-06-04 14:40:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888656287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:20,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:20,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:20,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296493841] [2024-06-04 14:40:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:20,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:20,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:20,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:20,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:20,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:21,391 INFO L124 PetriNetUnfolderBase]: 1606/2533 cut-off events. [2024-06-04 14:40:21,392 INFO L125 PetriNetUnfolderBase]: For 5550/5550 co-relation queries the response was YES. [2024-06-04 14:40:21,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8034 conditions, 2533 events. 1606/2533 cut-off events. For 5550/5550 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13043 event pairs, 676 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 8009. Up to 2373 conditions per place. [2024-06-04 14:40:21,410 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 55 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-04 14:40:21,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 459 flow [2024-06-04 14:40:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:40:21,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:21,412 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 271 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:40:21,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 459 flow [2024-06-04 14:40:21,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 437 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:21,417 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 303 flow [2024-06-04 14:40:21,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-04 14:40:21,419 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-04 14:40:21,419 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 303 flow [2024-06-04 14:40:21,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:21,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:21,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:21,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:40:21,420 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)] === [2024-06-04 14:40:21,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1385399280, now seen corresponding path program 1 times [2024-06-04 14:40:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:21,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582834861] [2024-06-04 14:40:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582834861] [2024-06-04 14:40:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582834861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481066867] [2024-06-04 14:40:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:22,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:22,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 303 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:22,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:22,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:22,672 INFO L124 PetriNetUnfolderBase]: 1745/2696 cut-off events. [2024-06-04 14:40:22,673 INFO L125 PetriNetUnfolderBase]: For 8609/8613 co-relation queries the response was YES. [2024-06-04 14:40:22,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 2696 events. 1745/2696 cut-off events. For 8609/8613 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13663 event pairs, 726 based on Foata normal form. 8/2700 useless extension candidates. Maximal degree in co-relation 9290. Up to 2505 conditions per place. [2024-06-04 14:40:22,686 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 54 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-04 14:40:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 545 flow [2024-06-04 14:40:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-04 14:40:22,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-04 14:40:22,688 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 303 flow. Second operand 6 states and 129 transitions. [2024-06-04 14:40:22,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 545 flow [2024-06-04 14:40:22,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 515 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:22,692 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 345 flow [2024-06-04 14:40:22,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-04 14:40:22,693 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-06-04 14:40:22,693 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 345 flow [2024-06-04 14:40:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:22,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:22,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:40:22,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:22,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1311128692, now seen corresponding path program 2 times [2024-06-04 14:40:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562598245] [2024-06-04 14:40:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:23,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562598245] [2024-06-04 14:40:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562598245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422190036] [2024-06-04 14:40:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:23,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:23,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:23,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:23,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:23,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:23,916 INFO L124 PetriNetUnfolderBase]: 1733/2669 cut-off events. [2024-06-04 14:40:23,917 INFO L125 PetriNetUnfolderBase]: For 10388/10392 co-relation queries the response was YES. [2024-06-04 14:40:23,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 2669 events. 1733/2669 cut-off events. For 10388/10392 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13484 event pairs, 740 based on Foata normal form. 3/2666 useless extension candidates. Maximal degree in co-relation 9525. Up to 2489 conditions per place. [2024-06-04 14:40:23,958 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 48 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-04 14:40:23,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 519 flow [2024-06-04 14:40:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-04 14:40:23,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-04 14:40:23,962 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 345 flow. Second operand 6 states and 125 transitions. [2024-06-04 14:40:23,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 519 flow [2024-06-04 14:40:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 490 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:23,967 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 364 flow [2024-06-04 14:40:23,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-04 14:40:23,968 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-04 14:40:23,968 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 364 flow [2024-06-04 14:40:23,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:23,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:23,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:23,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:40:23,969 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)] === [2024-06-04 14:40:23,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1270918778, now seen corresponding path program 1 times [2024-06-04 14:40:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877219221] [2024-06-04 14:40:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877219221] [2024-06-04 14:40:24,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877219221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:24,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229251507] [2024-06-04 14:40:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:24,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:24,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:24,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:24,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:24,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:24,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:25,343 INFO L124 PetriNetUnfolderBase]: 1590/2517 cut-off events. [2024-06-04 14:40:25,343 INFO L125 PetriNetUnfolderBase]: For 10273/10273 co-relation queries the response was YES. [2024-06-04 14:40:25,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2517 events. 1590/2517 cut-off events. For 10273/10273 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12895 event pairs, 634 based on Foata normal form. 4/2509 useless extension candidates. Maximal degree in co-relation 8993. Up to 2330 conditions per place. [2024-06-04 14:40:25,355 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 63 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-04 14:40:25,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 590 flow [2024-06-04 14:40:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:40:25,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:40:25,357 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 364 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:40:25,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 590 flow [2024-06-04 14:40:25,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 525 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:25,362 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 363 flow [2024-06-04 14:40:25,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=363, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-04 14:40:25,363 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-06-04 14:40:25,363 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 363 flow [2024-06-04 14:40:25,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:25,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:25,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:25,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:40:25,364 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)] === [2024-06-04 14:40:25,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1430626116, now seen corresponding path program 1 times [2024-06-04 14:40:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:25,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249688303] [2024-06-04 14:40:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:26,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249688303] [2024-06-04 14:40:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249688303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:26,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:26,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:26,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494946243] [2024-06-04 14:40:26,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:26,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:26,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:26,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:26,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:26,753 INFO L124 PetriNetUnfolderBase]: 1856/2804 cut-off events. [2024-06-04 14:40:26,754 INFO L125 PetriNetUnfolderBase]: For 14897/14901 co-relation queries the response was YES. [2024-06-04 14:40:26,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 2804 events. 1856/2804 cut-off events. For 14897/14901 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13769 event pairs, 731 based on Foata normal form. 8/2811 useless extension candidates. Maximal degree in co-relation 10758. Up to 2601 conditions per place. [2024-06-04 14:40:26,767 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 64 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2024-06-04 14:40:26,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 695 flow [2024-06-04 14:40:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:40:26,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:40:26,769 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 363 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:40:26,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 695 flow [2024-06-04 14:40:26,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 655 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:26,775 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 442 flow [2024-06-04 14:40:26,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-04 14:40:26,776 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-06-04 14:40:26,777 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 442 flow [2024-06-04 14:40:26,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:26,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:26,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:26,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:40:26,778 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)] === [2024-06-04 14:40:26,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1990284642, now seen corresponding path program 2 times [2024-06-04 14:40:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363228349] [2024-06-04 14:40:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363228349] [2024-06-04 14:40:27,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363228349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:27,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:27,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628358335] [2024-06-04 14:40:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:27,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:27,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:27,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:27,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:28,137 INFO L124 PetriNetUnfolderBase]: 1867/2816 cut-off events. [2024-06-04 14:40:28,137 INFO L125 PetriNetUnfolderBase]: For 18505/18509 co-relation queries the response was YES. [2024-06-04 14:40:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 2816 events. 1867/2816 cut-off events. For 18505/18509 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13786 event pairs, 745 based on Foata normal form. 3/2815 useless extension candidates. Maximal degree in co-relation 11626. Up to 2608 conditions per place. [2024-06-04 14:40:28,151 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 61 selfloop transitions, 33 changer transitions 0/99 dead transitions. [2024-06-04 14:40:28,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 826 flow [2024-06-04 14:40:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:40:28,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:40:28,153 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 442 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:40:28,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 826 flow [2024-06-04 14:40:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 790 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:28,161 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 542 flow [2024-06-04 14:40:28,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-06-04 14:40:28,162 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-06-04 14:40:28,162 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 542 flow [2024-06-04 14:40:28,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:28,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:28,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:28,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:40:28,163 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)] === [2024-06-04 14:40:28,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:28,163 INFO L85 PathProgramCache]: Analyzing trace with hash 743768442, now seen corresponding path program 3 times [2024-06-04 14:40:28,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:28,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628324463] [2024-06-04 14:40:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628324463] [2024-06-04 14:40:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628324463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:28,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500132706] [2024-06-04 14:40:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:28,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:28,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 542 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:28,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:28,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:28,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:29,527 INFO L124 PetriNetUnfolderBase]: 1862/2809 cut-off events. [2024-06-04 14:40:29,527 INFO L125 PetriNetUnfolderBase]: For 21860/21864 co-relation queries the response was YES. [2024-06-04 14:40:29,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 2809 events. 1862/2809 cut-off events. For 21860/21864 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13778 event pairs, 745 based on Foata normal form. 3/2808 useless extension candidates. Maximal degree in co-relation 12084. Up to 2605 conditions per place. [2024-06-04 14:40:29,540 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 58 selfloop transitions, 34 changer transitions 0/97 dead transitions. [2024-06-04 14:40:29,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 822 flow [2024-06-04 14:40:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-04 14:40:29,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-04 14:40:29,542 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 542 flow. Second operand 7 states and 142 transitions. [2024-06-04 14:40:29,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 822 flow [2024-06-04 14:40:29,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 767 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-04 14:40:29,553 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 563 flow [2024-06-04 14:40:29,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=563, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-04 14:40:29,554 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-04 14:40:29,554 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 563 flow [2024-06-04 14:40:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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) [2024-06-04 14:40:29,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:29,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:40:29,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1280814125, now seen corresponding path program 1 times [2024-06-04 14:40:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212405793] [2024-06-04 14:40:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:30,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212405793] [2024-06-04 14:40:30,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212405793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:30,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:30,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:40:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192288537] [2024-06-04 14:40:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:30,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:40:30,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:40:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:40:30,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:30,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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) [2024-06-04 14:40:30,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:30,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:30,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:30,606 INFO L124 PetriNetUnfolderBase]: 1534/2474 cut-off events. [2024-06-04 14:40:30,606 INFO L125 PetriNetUnfolderBase]: For 20405/20405 co-relation queries the response was YES. [2024-06-04 14:40:30,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10598 conditions, 2474 events. 1534/2474 cut-off events. For 20405/20405 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12973 event pairs, 581 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 10564. Up to 2252 conditions per place. [2024-06-04 14:40:30,618 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 67 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2024-06-04 14:40:30,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 755 flow [2024-06-04 14:40:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:40:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:40:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-04 14:40:30,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-04 14:40:30,620 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 563 flow. Second operand 5 states and 102 transitions. [2024-06-04 14:40:30,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 755 flow [2024-06-04 14:40:30,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 667 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:30,631 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 525 flow [2024-06-04 14:40:30,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-06-04 14:40:30,632 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-04 14:40:30,632 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 525 flow [2024-06-04 14:40:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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) [2024-06-04 14:40:30,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:30,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:30,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:40:30,634 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)] === [2024-06-04 14:40:30,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash -71126321, now seen corresponding path program 1 times [2024-06-04 14:40:30,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:30,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669351843] [2024-06-04 14:40:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669351843] [2024-06-04 14:40:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669351843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:31,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:31,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371212177] [2024-06-04 14:40:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:31,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:31,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:31,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:32,186 INFO L124 PetriNetUnfolderBase]: 1903/2883 cut-off events. [2024-06-04 14:40:32,186 INFO L125 PetriNetUnfolderBase]: For 27655/27659 co-relation queries the response was YES. [2024-06-04 14:40:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12925 conditions, 2883 events. 1903/2883 cut-off events. For 27655/27659 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14276 event pairs, 642 based on Foata normal form. 9/2891 useless extension candidates. Maximal degree in co-relation 12891. Up to 2522 conditions per place. [2024-06-04 14:40:32,199 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 77 selfloop transitions, 36 changer transitions 0/118 dead transitions. [2024-06-04 14:40:32,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 945 flow [2024-06-04 14:40:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-04 14:40:32,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-04 14:40:32,201 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 525 flow. Second operand 8 states and 167 transitions. [2024-06-04 14:40:32,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 945 flow [2024-06-04 14:40:32,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 917 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:32,214 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 646 flow [2024-06-04 14:40:32,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=646, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-04 14:40:32,214 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-06-04 14:40:32,214 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 646 flow [2024-06-04 14:40:32,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:32,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:32,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:32,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:40:32,215 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)] === [2024-06-04 14:40:32,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -71132118, now seen corresponding path program 1 times [2024-06-04 14:40:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:32,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359929629] [2024-06-04 14:40:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359929629] [2024-06-04 14:40:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359929629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:32,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195238550] [2024-06-04 14:40:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:32,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:33,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:33,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:33,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:33,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:33,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:33,644 INFO L124 PetriNetUnfolderBase]: 1914/2909 cut-off events. [2024-06-04 14:40:33,644 INFO L125 PetriNetUnfolderBase]: For 32077/32079 co-relation queries the response was YES. [2024-06-04 14:40:33,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 2909 events. 1914/2909 cut-off events. For 32077/32079 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14481 event pairs, 691 based on Foata normal form. 4/2912 useless extension candidates. Maximal degree in co-relation 13912. Up to 2677 conditions per place. [2024-06-04 14:40:33,659 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 75 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2024-06-04 14:40:33,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 116 transitions, 1028 flow [2024-06-04 14:40:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 14:40:33,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:33,661 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 646 flow. Second operand 7 states and 147 transitions. [2024-06-04 14:40:33,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 116 transitions, 1028 flow [2024-06-04 14:40:33,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 979 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:33,677 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 715 flow [2024-06-04 14:40:33,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=715, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2024-06-04 14:40:33,677 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 39 predicate places. [2024-06-04 14:40:33,678 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 715 flow [2024-06-04 14:40:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:40:33,678 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)] === [2024-06-04 14:40:33,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -347173778, now seen corresponding path program 2 times [2024-06-04 14:40:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745181665] [2024-06-04 14:40:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:34,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745181665] [2024-06-04 14:40:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745181665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:34,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278048289] [2024-06-04 14:40:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:34,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:34,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 715 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:34,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:34,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:34,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:35,105 INFO L124 PetriNetUnfolderBase]: 1925/2925 cut-off events. [2024-06-04 14:40:35,105 INFO L125 PetriNetUnfolderBase]: For 36206/36208 co-relation queries the response was YES. [2024-06-04 14:40:35,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14343 conditions, 2925 events. 1925/2925 cut-off events. For 36206/36208 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14508 event pairs, 686 based on Foata normal form. 4/2928 useless extension candidates. Maximal degree in co-relation 14306. Up to 2689 conditions per place. [2024-06-04 14:40:35,118 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2024-06-04 14:40:35,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 1099 flow [2024-06-04 14:40:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-04 14:40:35,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 14:40:35,121 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 715 flow. Second operand 7 states and 143 transitions. [2024-06-04 14:40:35,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 1099 flow [2024-06-04 14:40:35,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 979 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:35,137 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 720 flow [2024-06-04 14:40:35,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-06-04 14:40:35,137 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-04 14:40:35,137 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 720 flow [2024-06-04 14:40:35,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:35,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:35,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:35,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:40:35,138 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)] === [2024-06-04 14:40:35,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1569484236, now seen corresponding path program 3 times [2024-06-04 14:40:35,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:35,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962883036] [2024-06-04 14:40:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:35,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:35,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962883036] [2024-06-04 14:40:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962883036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:35,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:35,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963705972] [2024-06-04 14:40:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:35,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:35,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:35,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:35,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:35,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:35,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:36,533 INFO L124 PetriNetUnfolderBase]: 1920/2918 cut-off events. [2024-06-04 14:40:36,533 INFO L125 PetriNetUnfolderBase]: For 39693/39699 co-relation queries the response was YES. [2024-06-04 14:40:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14487 conditions, 2918 events. 1920/2918 cut-off events. For 39693/39699 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14512 event pairs, 712 based on Foata normal form. 5/2921 useless extension candidates. Maximal degree in co-relation 14450. Up to 2684 conditions per place. [2024-06-04 14:40:36,547 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 72 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2024-06-04 14:40:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 980 flow [2024-06-04 14:40:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:40:36,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:40:36,549 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 720 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:40:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 980 flow [2024-06-04 14:40:36,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 902 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:36,568 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 718 flow [2024-06-04 14:40:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-06-04 14:40:36,569 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-06-04 14:40:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 718 flow [2024-06-04 14:40:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-04 14:40:36,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:36,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:40:36,570 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1569282643, now seen corresponding path program 2 times [2024-06-04 14:40:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602667900] [2024-06-04 14:40:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602667900] [2024-06-04 14:40:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602667900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139612817] [2024-06-04 14:40:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:37,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:37,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:37,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:37,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:37,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:38,223 INFO L124 PetriNetUnfolderBase]: 1942/2938 cut-off events. [2024-06-04 14:40:38,223 INFO L125 PetriNetUnfolderBase]: For 44285/44289 co-relation queries the response was YES. [2024-06-04 14:40:38,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 2938 events. 1942/2938 cut-off events. For 44285/44289 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14474 event pairs, 660 based on Foata normal form. 5/2938 useless extension candidates. Maximal degree in co-relation 14831. Up to 2542 conditions per place. [2024-06-04 14:40:38,273 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 75 selfloop transitions, 49 changer transitions 0/129 dead transitions. [2024-06-04 14:40:38,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 1240 flow [2024-06-04 14:40:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-04 14:40:38,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:38,274 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 718 flow. Second operand 8 states and 168 transitions. [2024-06-04 14:40:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 1240 flow [2024-06-04 14:40:38,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 1139 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:38,293 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 793 flow [2024-06-04 14:40:38,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-06-04 14:40:38,293 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-06-04 14:40:38,293 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 793 flow [2024-06-04 14:40:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:38,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:38,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:38,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:40:38,294 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1582253017, now seen corresponding path program 3 times [2024-06-04 14:40:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570624636] [2024-06-04 14:40:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:38,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570624636] [2024-06-04 14:40:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570624636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941344510] [2024-06-04 14:40:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:39,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:39,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 793 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:39,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:39,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:39,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:39,824 INFO L124 PetriNetUnfolderBase]: 1964/2972 cut-off events. [2024-06-04 14:40:39,824 INFO L125 PetriNetUnfolderBase]: For 49469/49473 co-relation queries the response was YES. [2024-06-04 14:40:39,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15515 conditions, 2972 events. 1964/2972 cut-off events. For 49469/49473 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14718 event pairs, 660 based on Foata normal form. 5/2971 useless extension candidates. Maximal degree in co-relation 15476. Up to 2551 conditions per place. [2024-06-04 14:40:39,839 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 71 selfloop transitions, 55 changer transitions 0/131 dead transitions. [2024-06-04 14:40:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 1297 flow [2024-06-04 14:40:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-04 14:40:39,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-04 14:40:39,841 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 793 flow. Second operand 8 states and 167 transitions. [2024-06-04 14:40:39,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 1297 flow [2024-06-04 14:40:39,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 1245 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:39,862 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 899 flow [2024-06-04 14:40:39,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-06-04 14:40:39,863 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-06-04 14:40:39,863 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 899 flow [2024-06-04 14:40:39,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:39,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:39,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:39,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:40:39,863 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:39,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1691768301, now seen corresponding path program 4 times [2024-06-04 14:40:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884327804] [2024-06-04 14:40:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:39,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884327804] [2024-06-04 14:40:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884327804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:40,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361657191] [2024-06-04 14:40:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:40,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:40,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 899 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:40,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:40,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:40,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:41,413 INFO L124 PetriNetUnfolderBase]: 1954/2961 cut-off events. [2024-06-04 14:40:41,413 INFO L125 PetriNetUnfolderBase]: For 53152/53156 co-relation queries the response was YES. [2024-06-04 14:40:41,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15710 conditions, 2961 events. 1954/2961 cut-off events. For 53152/53156 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14648 event pairs, 660 based on Foata normal form. 5/2961 useless extension candidates. Maximal degree in co-relation 15668. Up to 2547 conditions per place. [2024-06-04 14:40:41,428 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 72 selfloop transitions, 53 changer transitions 0/130 dead transitions. [2024-06-04 14:40:41,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 1293 flow [2024-06-04 14:40:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:40:41,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:40:41,430 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 899 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:40:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 1293 flow [2024-06-04 14:40:41,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 130 transitions, 1129 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:41,457 INFO L231 Difference]: Finished difference. Result has 96 places, 101 transitions, 849 flow [2024-06-04 14:40:41,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=849, PETRI_PLACES=96, PETRI_TRANSITIONS=101} [2024-06-04 14:40:41,457 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-06-04 14:40:41,457 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 849 flow [2024-06-04 14:40:41,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:41,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:41,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:41,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:40:41,458 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)] === [2024-06-04 14:40:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1050533193, now seen corresponding path program 1 times [2024-06-04 14:40:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634549562] [2024-06-04 14:40:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634549562] [2024-06-04 14:40:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634549562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627360060] [2024-06-04 14:40:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:42,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:42,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:42,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:42,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:42,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:42,963 INFO L124 PetriNetUnfolderBase]: 1616/2617 cut-off events. [2024-06-04 14:40:42,964 INFO L125 PetriNetUnfolderBase]: For 48128/48128 co-relation queries the response was YES. [2024-06-04 14:40:42,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13579 conditions, 2617 events. 1616/2617 cut-off events. For 48128/48128 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13826 event pairs, 550 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 13537. Up to 2362 conditions per place. [2024-06-04 14:40:42,978 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 89 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2024-06-04 14:40:42,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 114 transitions, 1099 flow [2024-06-04 14:40:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-04 14:40:42,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2024-06-04 14:40:42,979 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 849 flow. Second operand 6 states and 119 transitions. [2024-06-04 14:40:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 114 transitions, 1099 flow [2024-06-04 14:40:43,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 114 transitions, 966 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:43,006 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 776 flow [2024-06-04 14:40:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-06-04 14:40:43,006 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-06-04 14:40:43,006 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 776 flow [2024-06-04 14:40:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:43,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:40:43,007 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 323858279, now seen corresponding path program 1 times [2024-06-04 14:40:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007664785] [2024-06-04 14:40:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007664785] [2024-06-04 14:40:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007664785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94449356] [2024-06-04 14:40:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:43,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:43,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:43,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 776 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:43,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:43,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:44,359 INFO L124 PetriNetUnfolderBase]: 1859/2880 cut-off events. [2024-06-04 14:40:44,359 INFO L125 PetriNetUnfolderBase]: For 60730/60732 co-relation queries the response was YES. [2024-06-04 14:40:44,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 2880 events. 1859/2880 cut-off events. For 60730/60732 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14649 event pairs, 444 based on Foata normal form. 6/2885 useless extension candidates. Maximal degree in co-relation 15533. Up to 2550 conditions per place. [2024-06-04 14:40:44,373 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 98 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-04 14:40:44,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1210 flow [2024-06-04 14:40:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 14:40:44,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:44,375 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 776 flow. Second operand 7 states and 147 transitions. [2024-06-04 14:40:44,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1210 flow [2024-06-04 14:40:44,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 1172 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:44,399 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 843 flow [2024-06-04 14:40:44,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=843, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-04 14:40:44,399 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-06-04 14:40:44,399 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 843 flow [2024-06-04 14:40:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:44,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:44,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:40:44,400 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)] === [2024-06-04 14:40:44,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash 326715239, now seen corresponding path program 2 times [2024-06-04 14:40:44,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:44,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41000292] [2024-06-04 14:40:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:44,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41000292] [2024-06-04 14:40:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41000292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384867043] [2024-06-04 14:40:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:45,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:45,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:45,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 843 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:45,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:45,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:45,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:45,759 INFO L124 PetriNetUnfolderBase]: 1851/2868 cut-off events. [2024-06-04 14:40:45,759 INFO L125 PetriNetUnfolderBase]: For 65529/65531 co-relation queries the response was YES. [2024-06-04 14:40:45,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15878 conditions, 2868 events. 1851/2868 cut-off events. For 65529/65531 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14601 event pairs, 603 based on Foata normal form. 6/2873 useless extension candidates. Maximal degree in co-relation 15834. Up to 2615 conditions per place. [2024-06-04 14:40:45,776 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 97 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-04 14:40:45,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 1137 flow [2024-06-04 14:40:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-04 14:40:45,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-06-04 14:40:45,777 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 843 flow. Second operand 7 states and 145 transitions. [2024-06-04 14:40:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 1137 flow [2024-06-04 14:40:45,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 131 transitions, 1082 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:45,804 INFO L231 Difference]: Finished difference. Result has 101 places, 108 transitions, 837 flow [2024-06-04 14:40:45,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=101, PETRI_TRANSITIONS=108} [2024-06-04 14:40:45,805 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-06-04 14:40:45,805 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 108 transitions, 837 flow [2024-06-04 14:40:45,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:45,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:45,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:40:45,805 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)] === [2024-06-04 14:40:45,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 442011369, now seen corresponding path program 1 times [2024-06-04 14:40:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613569881] [2024-06-04 14:40:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613569881] [2024-06-04 14:40:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613569881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:46,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450754620] [2024-06-04 14:40:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:46,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:46,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 108 transitions, 837 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:46,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:46,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:47,386 INFO L124 PetriNetUnfolderBase]: 1976/3018 cut-off events. [2024-06-04 14:40:47,387 INFO L125 PetriNetUnfolderBase]: For 71406/71408 co-relation queries the response was YES. [2024-06-04 14:40:47,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 3018 events. 1976/3018 cut-off events. For 71406/71408 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15175 event pairs, 589 based on Foata normal form. 4/3021 useless extension candidates. Maximal degree in co-relation 16694. Up to 2569 conditions per place. [2024-06-04 14:40:47,405 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 55 changer transitions 0/146 dead transitions. [2024-06-04 14:40:47,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 146 transitions, 1331 flow [2024-06-04 14:40:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-04 14:40:47,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579545454545453 [2024-06-04 14:40:47,407 INFO L175 Difference]: Start difference. First operand has 101 places, 108 transitions, 837 flow. Second operand 8 states and 171 transitions. [2024-06-04 14:40:47,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 146 transitions, 1331 flow [2024-06-04 14:40:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 146 transitions, 1281 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:47,445 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 943 flow [2024-06-04 14:40:47,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=943, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2024-06-04 14:40:47,446 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-06-04 14:40:47,446 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 943 flow [2024-06-04 14:40:47,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:47,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:47,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:47,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:40:47,447 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)] === [2024-06-04 14:40:47,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 442190859, now seen corresponding path program 2 times [2024-06-04 14:40:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:47,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551413460] [2024-06-04 14:40:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:47,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:48,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551413460] [2024-06-04 14:40:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551413460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899428961] [2024-06-04 14:40:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:48,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:48,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 943 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:48,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:48,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:48,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:49,063 INFO L124 PetriNetUnfolderBase]: 2030/3111 cut-off events. [2024-06-04 14:40:49,063 INFO L125 PetriNetUnfolderBase]: For 79203/79205 co-relation queries the response was YES. [2024-06-04 14:40:49,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17709 conditions, 3111 events. 2030/3111 cut-off events. For 79203/79205 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15786 event pairs, 591 based on Foata normal form. 4/3114 useless extension candidates. Maximal degree in co-relation 17662. Up to 2615 conditions per place. [2024-06-04 14:40:49,079 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 89 selfloop transitions, 57 changer transitions 0/151 dead transitions. [2024-06-04 14:40:49,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 151 transitions, 1589 flow [2024-06-04 14:40:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-04 14:40:49,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-04 14:40:49,081 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 943 flow. Second operand 8 states and 169 transitions. [2024-06-04 14:40:49,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 151 transitions, 1589 flow [2024-06-04 14:40:49,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 151 transitions, 1404 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:49,120 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 969 flow [2024-06-04 14:40:49,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=969, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-06-04 14:40:49,121 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2024-06-04 14:40:49,121 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 969 flow [2024-06-04 14:40:49,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:49,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:40:49,121 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)] === [2024-06-04 14:40:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2122515655, now seen corresponding path program 3 times [2024-06-04 14:40:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:49,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597668034] [2024-06-04 14:40:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:49,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:49,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597668034] [2024-06-04 14:40:49,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597668034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:49,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:49,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:49,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265440392] [2024-06-04 14:40:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:49,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:49,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:49,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 969 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:49,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:49,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:50,691 INFO L124 PetriNetUnfolderBase]: 2020/3097 cut-off events. [2024-06-04 14:40:50,691 INFO L125 PetriNetUnfolderBase]: For 83197/83199 co-relation queries the response was YES. [2024-06-04 14:40:50,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17691 conditions, 3097 events. 2020/3097 cut-off events. For 83197/83199 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15688 event pairs, 596 based on Foata normal form. 4/3100 useless extension candidates. Maximal degree in co-relation 17644. Up to 2607 conditions per place. [2024-06-04 14:40:50,711 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 89 selfloop transitions, 56 changer transitions 0/150 dead transitions. [2024-06-04 14:40:50,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 150 transitions, 1435 flow [2024-06-04 14:40:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-04 14:40:50,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-04 14:40:50,713 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 969 flow. Second operand 8 states and 169 transitions. [2024-06-04 14:40:50,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 150 transitions, 1435 flow [2024-06-04 14:40:50,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1326 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:50,749 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 980 flow [2024-06-04 14:40:50,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=980, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2024-06-04 14:40:50,749 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-04 14:40:50,750 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 980 flow [2024-06-04 14:40:50,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:50,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:50,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:40:50,750 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)] === [2024-06-04 14:40:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 708855918, now seen corresponding path program 1 times [2024-06-04 14:40:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954094618] [2024-06-04 14:40:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:51,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954094618] [2024-06-04 14:40:51,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954094618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:51,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:51,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122487969] [2024-06-04 14:40:51,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:51,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:51,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:51,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:51,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 980 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-04 14:40:51,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:51,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:51,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:51,905 INFO L124 PetriNetUnfolderBase]: 1918/2991 cut-off events. [2024-06-04 14:40:51,905 INFO L125 PetriNetUnfolderBase]: For 88472/88472 co-relation queries the response was YES. [2024-06-04 14:40:51,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17498 conditions, 2991 events. 1918/2991 cut-off events. For 88472/88472 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15461 event pairs, 608 based on Foata normal form. 1/2991 useless extension candidates. Maximal degree in co-relation 17450. Up to 2794 conditions per place. [2024-06-04 14:40:51,924 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 111 selfloop transitions, 11 changer transitions 0/135 dead transitions. [2024-06-04 14:40:51,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 135 transitions, 1290 flow [2024-06-04 14:40:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-04 14:40:51,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2024-06-04 14:40:51,926 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 980 flow. Second operand 6 states and 119 transitions. [2024-06-04 14:40:51,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 135 transitions, 1290 flow [2024-06-04 14:40:51,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 1165 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:51,971 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 917 flow [2024-06-04 14:40:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2024-06-04 14:40:51,971 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-06-04 14:40:51,971 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 917 flow [2024-06-04 14:40:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-04 14:40:51,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:51,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:40:51,972 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)] === [2024-06-04 14:40:51,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -905209111, now seen corresponding path program 4 times [2024-06-04 14:40:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91831070] [2024-06-04 14:40:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:52,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91831070] [2024-06-04 14:40:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91831070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:52,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874958557] [2024-06-04 14:40:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:52,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:52,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:52,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 917 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:52,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:52,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:52,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:53,602 INFO L124 PetriNetUnfolderBase]: 2079/3197 cut-off events. [2024-06-04 14:40:53,602 INFO L125 PetriNetUnfolderBase]: For 96815/96821 co-relation queries the response was YES. [2024-06-04 14:40:53,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18715 conditions, 3197 events. 2079/3197 cut-off events. For 96815/96821 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16342 event pairs, 613 based on Foata normal form. 7/3202 useless extension candidates. Maximal degree in co-relation 18666. Up to 2660 conditions per place. [2024-06-04 14:40:53,623 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 59 changer transitions 0/157 dead transitions. [2024-06-04 14:40:53,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 157 transitions, 1575 flow [2024-06-04 14:40:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:40:53,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:40:53,624 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 917 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:40:53,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 157 transitions, 1575 flow [2024-06-04 14:40:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 157 transitions, 1535 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:53,664 INFO L231 Difference]: Finished difference. Result has 111 places, 126 transitions, 1079 flow [2024-06-04 14:40:53,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1079, PETRI_PLACES=111, PETRI_TRANSITIONS=126} [2024-06-04 14:40:53,664 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-04 14:40:53,664 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 1079 flow [2024-06-04 14:40:53,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:53,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:53,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:53,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:40:53,665 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)] === [2024-06-04 14:40:53,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1235376045, now seen corresponding path program 5 times [2024-06-04 14:40:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311916263] [2024-06-04 14:40:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311916263] [2024-06-04 14:40:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311916263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968721510] [2024-06-04 14:40:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:54,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:54,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 1079 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:54,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:54,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:54,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:55,221 INFO L124 PetriNetUnfolderBase]: 2069/3183 cut-off events. [2024-06-04 14:40:55,222 INFO L125 PetriNetUnfolderBase]: For 102787/102793 co-relation queries the response was YES. [2024-06-04 14:40:55,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19067 conditions, 3183 events. 2069/3183 cut-off events. For 102787/102793 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16261 event pairs, 611 based on Foata normal form. 7/3188 useless extension candidates. Maximal degree in co-relation 19017. Up to 2652 conditions per place. [2024-06-04 14:40:55,242 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 90 selfloop transitions, 60 changer transitions 0/155 dead transitions. [2024-06-04 14:40:55,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 155 transitions, 1555 flow [2024-06-04 14:40:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:40:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:40:55,244 INFO L175 Difference]: Start difference. First operand has 111 places, 126 transitions, 1079 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:40:55,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 155 transitions, 1555 flow [2024-06-04 14:40:55,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 155 transitions, 1388 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:55,286 INFO L231 Difference]: Finished difference. Result has 114 places, 126 transitions, 1040 flow [2024-06-04 14:40:55,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1040, PETRI_PLACES=114, PETRI_TRANSITIONS=126} [2024-06-04 14:40:55,288 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 69 predicate places. [2024-06-04 14:40:55,288 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 126 transitions, 1040 flow [2024-06-04 14:40:55,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:55,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:55,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:40:55,289 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)] === [2024-06-04 14:40:55,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1631254135, now seen corresponding path program 6 times [2024-06-04 14:40:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325764601] [2024-06-04 14:40:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:56,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:56,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325764601] [2024-06-04 14:40:56,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325764601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:56,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:56,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524476315] [2024-06-04 14:40:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:56,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:56,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 126 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:56,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:56,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:56,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:56,868 INFO L124 PetriNetUnfolderBase]: 2059/3169 cut-off events. [2024-06-04 14:40:56,869 INFO L125 PetriNetUnfolderBase]: For 107243/107249 co-relation queries the response was YES. [2024-06-04 14:40:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 3169 events. 2059/3169 cut-off events. For 107243/107249 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16177 event pairs, 616 based on Foata normal form. 7/3174 useless extension candidates. Maximal degree in co-relation 18989. Up to 2644 conditions per place. [2024-06-04 14:40:56,888 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 84 selfloop transitions, 63 changer transitions 0/152 dead transitions. [2024-06-04 14:40:56,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 152 transitions, 1398 flow [2024-06-04 14:40:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:40:56,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:40:56,890 INFO L175 Difference]: Start difference. First operand has 114 places, 126 transitions, 1040 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:40:56,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 152 transitions, 1398 flow [2024-06-04 14:40:56,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 152 transitions, 1241 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:56,931 INFO L231 Difference]: Finished difference. Result has 115 places, 126 transitions, 1017 flow [2024-06-04 14:40:56,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=115, PETRI_TRANSITIONS=126} [2024-06-04 14:40:56,931 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-04 14:40:56,931 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 126 transitions, 1017 flow [2024-06-04 14:40:56,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:56,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:56,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:56,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:40:56,932 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:56,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1793224244, now seen corresponding path program 2 times [2024-06-04 14:40:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67822179] [2024-06-04 14:40:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:56,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67822179] [2024-06-04 14:40:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67822179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:57,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:57,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:57,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858583360] [2024-06-04 14:40:57,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:57,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:57,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:57,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:57,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 126 transitions, 1017 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-04 14:40:57,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:57,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:57,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:58,155 INFO L124 PetriNetUnfolderBase]: 1945/3050 cut-off events. [2024-06-04 14:40:58,156 INFO L125 PetriNetUnfolderBase]: For 112017/112023 co-relation queries the response was YES. [2024-06-04 14:40:58,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18727 conditions, 3050 events. 1945/3050 cut-off events. For 112017/112023 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15914 event pairs, 618 based on Foata normal form. 7/3056 useless extension candidates. Maximal degree in co-relation 18675. Up to 2830 conditions per place. [2024-06-04 14:40:58,175 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 109 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-04 14:40:58,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 1323 flow [2024-06-04 14:40:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-04 14:40:58,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-04 14:40:58,176 INFO L175 Difference]: Start difference. First operand has 115 places, 126 transitions, 1017 flow. Second operand 6 states and 115 transitions. [2024-06-04 14:40:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 1323 flow [2024-06-04 14:40:58,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 138 transitions, 1173 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:58,220 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 945 flow [2024-06-04 14:40:58,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=945, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2024-06-04 14:40:58,221 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-04 14:40:58,221 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 945 flow [2024-06-04 14:40:58,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-06-04 14:40:58,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:58,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:40:58,221 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:58,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash -664727528, now seen corresponding path program 1 times [2024-06-04 14:40:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804510090] [2024-06-04 14:40:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:58,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804510090] [2024-06-04 14:40:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804510090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:58,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:58,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407190041] [2024-06-04 14:40:58,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:58,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:58,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 129 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:58,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:59,394 INFO L124 PetriNetUnfolderBase]: 1721/2808 cut-off events. [2024-06-04 14:40:59,394 INFO L125 PetriNetUnfolderBase]: For 100285/100285 co-relation queries the response was YES. [2024-06-04 14:40:59,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16856 conditions, 2808 events. 1721/2808 cut-off events. For 100285/100285 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15200 event pairs, 519 based on Foata normal form. 1/2808 useless extension candidates. Maximal degree in co-relation 16803. Up to 2519 conditions per place. [2024-06-04 14:40:59,412 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 119 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-06-04 14:40:59,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 144 transitions, 1265 flow [2024-06-04 14:40:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 14:40:59,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:40:59,413 INFO L175 Difference]: Start difference. First operand has 113 places, 129 transitions, 945 flow. Second operand 6 states and 121 transitions. [2024-06-04 14:40:59,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 144 transitions, 1265 flow [2024-06-04 14:40:59,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 144 transitions, 1209 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:59,462 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 953 flow [2024-06-04 14:40:59,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=953, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-06-04 14:40:59,462 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-04 14:40:59,462 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 953 flow [2024-06-04 14:40:59,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:59,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:59,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:59,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:40:59,463 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:59,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1805511769, now seen corresponding path program 1 times [2024-06-04 14:40:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:59,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635574939] [2024-06-04 14:40:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:00,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:00,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635574939] [2024-06-04 14:41:00,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635574939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:00,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112746281] [2024-06-04 14:41:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:00,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 953 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:01,307 INFO L124 PetriNetUnfolderBase]: 1812/2893 cut-off events. [2024-06-04 14:41:01,307 INFO L125 PetriNetUnfolderBase]: For 105447/105447 co-relation queries the response was YES. [2024-06-04 14:41:01,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17512 conditions, 2893 events. 1812/2893 cut-off events. For 105447/105447 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15190 event pairs, 504 based on Foata normal form. 4/2896 useless extension candidates. Maximal degree in co-relation 17458. Up to 2639 conditions per place. [2024-06-04 14:41:01,326 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 140 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-04 14:41:01,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 165 transitions, 1391 flow [2024-06-04 14:41:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:01,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:01,328 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 953 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:01,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 165 transitions, 1391 flow [2024-06-04 14:41:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 165 transitions, 1349 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:01,378 INFO L231 Difference]: Finished difference. Result has 121 places, 137 transitions, 1016 flow [2024-06-04 14:41:01,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1016, PETRI_PLACES=121, PETRI_TRANSITIONS=137} [2024-06-04 14:41:01,378 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-06-04 14:41:01,378 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 137 transitions, 1016 flow [2024-06-04 14:41:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:01,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:01,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:41:01,379 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)] === [2024-06-04 14:41:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1793218292, now seen corresponding path program 2 times [2024-06-04 14:41:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085983426] [2024-06-04 14:41:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085983426] [2024-06-04 14:41:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085983426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:02,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001388937] [2024-06-04 14:41:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:02,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:02,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:02,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 137 transitions, 1016 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:02,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:02,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:02,598 INFO L124 PetriNetUnfolderBase]: 1710/2791 cut-off events. [2024-06-04 14:41:02,598 INFO L125 PetriNetUnfolderBase]: For 110503/110505 co-relation queries the response was YES. [2024-06-04 14:41:02,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17586 conditions, 2791 events. 1710/2791 cut-off events. For 110503/110505 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15026 event pairs, 494 based on Foata normal form. 3/2793 useless extension candidates. Maximal degree in co-relation 17530. Up to 2497 conditions per place. [2024-06-04 14:41:02,619 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 119 selfloop transitions, 16 changer transitions 0/149 dead transitions. [2024-06-04 14:41:02,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 149 transitions, 1346 flow [2024-06-04 14:41:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:41:02,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:02,620 INFO L175 Difference]: Start difference. First operand has 121 places, 137 transitions, 1016 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:41:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 149 transitions, 1346 flow [2024-06-04 14:41:02,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 149 transitions, 1281 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:02,675 INFO L231 Difference]: Finished difference. Result has 121 places, 140 transitions, 1033 flow [2024-06-04 14:41:02,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1033, PETRI_PLACES=121, PETRI_TRANSITIONS=140} [2024-06-04 14:41:02,676 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-06-04 14:41:02,676 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 140 transitions, 1033 flow [2024-06-04 14:41:02,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:02,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:02,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:02,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:41:02,676 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:02,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1449672911, now seen corresponding path program 1 times [2024-06-04 14:41:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857471293] [2024-06-04 14:41:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857471293] [2024-06-04 14:41:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857471293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774314668] [2024-06-04 14:41:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:03,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:03,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:03,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:03,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 140 transitions, 1033 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:03,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:03,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:03,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:04,081 INFO L124 PetriNetUnfolderBase]: 2067/3179 cut-off events. [2024-06-04 14:41:04,081 INFO L125 PetriNetUnfolderBase]: For 139790/139792 co-relation queries the response was YES. [2024-06-04 14:41:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 3179 events. 2067/3179 cut-off events. For 139790/139792 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16078 event pairs, 415 based on Foata normal form. 6/3184 useless extension candidates. Maximal degree in co-relation 20731. Up to 2733 conditions per place. [2024-06-04 14:41:04,103 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 130 selfloop transitions, 40 changer transitions 0/175 dead transitions. [2024-06-04 14:41:04,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 175 transitions, 1629 flow [2024-06-04 14:41:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:41:04,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:41:04,104 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 1033 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:41:04,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 175 transitions, 1629 flow [2024-06-04 14:41:04,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 175 transitions, 1569 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:04,164 INFO L231 Difference]: Finished difference. Result has 125 places, 144 transitions, 1120 flow [2024-06-04 14:41:04,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=125, PETRI_TRANSITIONS=144} [2024-06-04 14:41:04,165 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 80 predicate places. [2024-06-04 14:41:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 144 transitions, 1120 flow [2024-06-04 14:41:04,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:04,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:04,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:41:04,166 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:04,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1538386541, now seen corresponding path program 2 times [2024-06-04 14:41:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343046648] [2024-06-04 14:41:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343046648] [2024-06-04 14:41:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343046648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:04,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475259787] [2024-06-04 14:41:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:05,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:05,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 144 transitions, 1120 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:05,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:05,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:05,707 INFO L124 PetriNetUnfolderBase]: 2084/3206 cut-off events. [2024-06-04 14:41:05,707 INFO L125 PetriNetUnfolderBase]: For 148351/148353 co-relation queries the response was YES. [2024-06-04 14:41:05,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21421 conditions, 3206 events. 2084/3206 cut-off events. For 148351/148353 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16255 event pairs, 584 based on Foata normal form. 6/3211 useless extension candidates. Maximal degree in co-relation 21363. Up to 2913 conditions per place. [2024-06-04 14:41:05,729 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 130 selfloop transitions, 38 changer transitions 0/173 dead transitions. [2024-06-04 14:41:05,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 173 transitions, 1556 flow [2024-06-04 14:41:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:41:05,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:41:05,731 INFO L175 Difference]: Start difference. First operand has 125 places, 144 transitions, 1120 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:41:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 173 transitions, 1556 flow [2024-06-04 14:41:05,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 173 transitions, 1478 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:05,843 INFO L231 Difference]: Finished difference. Result has 129 places, 146 transitions, 1161 flow [2024-06-04 14:41:05,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1161, PETRI_PLACES=129, PETRI_TRANSITIONS=146} [2024-06-04 14:41:05,844 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2024-06-04 14:41:05,844 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 146 transitions, 1161 flow [2024-06-04 14:41:05,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:05,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:41:05,844 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:05,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 678769495, now seen corresponding path program 3 times [2024-06-04 14:41:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623748690] [2024-06-04 14:41:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623748690] [2024-06-04 14:41:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623748690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454587753] [2024-06-04 14:41:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:06,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:06,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 146 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:06,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:06,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:07,422 INFO L124 PetriNetUnfolderBase]: 2101/3233 cut-off events. [2024-06-04 14:41:07,422 INFO L125 PetriNetUnfolderBase]: For 156722/156724 co-relation queries the response was YES. [2024-06-04 14:41:07,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21843 conditions, 3233 events. 2101/3233 cut-off events. For 156722/156724 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16453 event pairs, 584 based on Foata normal form. 6/3238 useless extension candidates. Maximal degree in co-relation 21783. Up to 2899 conditions per place. [2024-06-04 14:41:07,442 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 130 selfloop transitions, 41 changer transitions 0/176 dead transitions. [2024-06-04 14:41:07,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 176 transitions, 1601 flow [2024-06-04 14:41:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:41:07,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:07,443 INFO L175 Difference]: Start difference. First operand has 129 places, 146 transitions, 1161 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:41:07,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 176 transitions, 1601 flow [2024-06-04 14:41:07,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 176 transitions, 1512 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:07,505 INFO L231 Difference]: Finished difference. Result has 131 places, 148 transitions, 1193 flow [2024-06-04 14:41:07,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1193, PETRI_PLACES=131, PETRI_TRANSITIONS=148} [2024-06-04 14:41:07,506 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-04 14:41:07,506 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 148 transitions, 1193 flow [2024-06-04 14:41:07,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:07,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:07,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:07,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:41:07,506 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)] === [2024-06-04 14:41:07,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1084324888, now seen corresponding path program 1 times [2024-06-04 14:41:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063957709] [2024-06-04 14:41:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:08,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063957709] [2024-06-04 14:41:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063957709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:08,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807510831] [2024-06-04 14:41:08,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:08,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:08,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:08,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 148 transitions, 1193 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:08,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:08,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:08,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:08,881 INFO L124 PetriNetUnfolderBase]: 2001/3138 cut-off events. [2024-06-04 14:41:08,881 INFO L125 PetriNetUnfolderBase]: For 164120/164122 co-relation queries the response was YES. [2024-06-04 14:41:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21638 conditions, 3138 events. 2001/3138 cut-off events. For 164120/164122 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16401 event pairs, 579 based on Foata normal form. 4/3141 useless extension candidates. Maximal degree in co-relation 21577. Up to 2824 conditions per place. [2024-06-04 14:41:08,904 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 133 selfloop transitions, 24 changer transitions 0/174 dead transitions. [2024-06-04 14:41:08,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 174 transitions, 1613 flow [2024-06-04 14:41:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-04 14:41:08,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-06-04 14:41:08,906 INFO L175 Difference]: Start difference. First operand has 131 places, 148 transitions, 1193 flow. Second operand 7 states and 145 transitions. [2024-06-04 14:41:08,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 174 transitions, 1613 flow [2024-06-04 14:41:08,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 1514 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:08,972 INFO L231 Difference]: Finished difference. Result has 132 places, 152 transitions, 1207 flow [2024-06-04 14:41:08,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=132, PETRI_TRANSITIONS=152} [2024-06-04 14:41:08,972 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 87 predicate places. [2024-06-04 14:41:08,972 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 152 transitions, 1207 flow [2024-06-04 14:41:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:08,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:08,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:08,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:41:08,973 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)] === [2024-06-04 14:41:08,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash 817297645, now seen corresponding path program 4 times [2024-06-04 14:41:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337422258] [2024-06-04 14:41:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:09,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337422258] [2024-06-04 14:41:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337422258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:09,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:09,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302780275] [2024-06-04 14:41:09,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:09,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:09,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 152 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:09,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:10,612 INFO L124 PetriNetUnfolderBase]: 2128/3276 cut-off events. [2024-06-04 14:41:10,612 INFO L125 PetriNetUnfolderBase]: For 173763/173765 co-relation queries the response was YES. [2024-06-04 14:41:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22825 conditions, 3276 events. 2128/3276 cut-off events. For 173763/173765 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16688 event pairs, 419 based on Foata normal form. 6/3281 useless extension candidates. Maximal degree in co-relation 22763. Up to 2894 conditions per place. [2024-06-04 14:41:10,635 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 137 selfloop transitions, 45 changer transitions 0/187 dead transitions. [2024-06-04 14:41:10,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 187 transitions, 1823 flow [2024-06-04 14:41:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 14:41:10,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-04 14:41:10,636 INFO L175 Difference]: Start difference. First operand has 132 places, 152 transitions, 1207 flow. Second operand 8 states and 166 transitions. [2024-06-04 14:41:10,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 187 transitions, 1823 flow [2024-06-04 14:41:10,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 187 transitions, 1738 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:10,728 INFO L231 Difference]: Finished difference. Result has 135 places, 154 transitions, 1251 flow [2024-06-04 14:41:10,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1251, PETRI_PLACES=135, PETRI_TRANSITIONS=154} [2024-06-04 14:41:10,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-06-04 14:41:10,731 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 154 transitions, 1251 flow [2024-06-04 14:41:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:10,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:10,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:41:10,731 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)] === [2024-06-04 14:41:10,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash 361389587, now seen corresponding path program 5 times [2024-06-04 14:41:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:10,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696333713] [2024-06-04 14:41:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:11,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696333713] [2024-06-04 14:41:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696333713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:11,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525794318] [2024-06-04 14:41:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:11,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:11,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:11,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 154 transitions, 1251 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:11,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:11,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:12,329 INFO L124 PetriNetUnfolderBase]: 2145/3303 cut-off events. [2024-06-04 14:41:12,329 INFO L125 PetriNetUnfolderBase]: For 183246/183248 co-relation queries the response was YES. [2024-06-04 14:41:12,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23291 conditions, 3303 events. 2145/3303 cut-off events. For 183246/183248 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 16875 event pairs, 588 based on Foata normal form. 6/3308 useless extension candidates. Maximal degree in co-relation 23228. Up to 3008 conditions per place. [2024-06-04 14:41:12,355 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 140 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-04 14:41:12,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 186 transitions, 1725 flow [2024-06-04 14:41:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:41:12,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:41:12,356 INFO L175 Difference]: Start difference. First operand has 135 places, 154 transitions, 1251 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:41:12,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 186 transitions, 1725 flow [2024-06-04 14:41:12,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 186 transitions, 1602 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:12,453 INFO L231 Difference]: Finished difference. Result has 137 places, 156 transitions, 1257 flow [2024-06-04 14:41:12,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1257, PETRI_PLACES=137, PETRI_TRANSITIONS=156} [2024-06-04 14:41:12,454 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2024-06-04 14:41:12,454 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 156 transitions, 1257 flow [2024-06-04 14:41:12,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:12,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:12,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:12,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:41:12,455 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)] === [2024-06-04 14:41:12,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1373470829, now seen corresponding path program 6 times [2024-06-04 14:41:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:12,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630185867] [2024-06-04 14:41:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:12,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630185867] [2024-06-04 14:41:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630185867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:13,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:13,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:13,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782626498] [2024-06-04 14:41:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:13,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:13,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:13,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:13,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 156 transitions, 1257 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:13,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:13,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:13,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:14,050 INFO L124 PetriNetUnfolderBase]: 2162/3330 cut-off events. [2024-06-04 14:41:14,050 INFO L125 PetriNetUnfolderBase]: For 192370/192372 co-relation queries the response was YES. [2024-06-04 14:41:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23587 conditions, 3330 events. 2162/3330 cut-off events. For 192370/192372 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16992 event pairs, 588 based on Foata normal form. 6/3335 useless extension candidates. Maximal degree in co-relation 23523. Up to 3035 conditions per place. [2024-06-04 14:41:14,073 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 142 selfloop transitions, 38 changer transitions 0/185 dead transitions. [2024-06-04 14:41:14,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 185 transitions, 1721 flow [2024-06-04 14:41:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:41:14,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:41:14,074 INFO L175 Difference]: Start difference. First operand has 137 places, 156 transitions, 1257 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:41:14,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 185 transitions, 1721 flow [2024-06-04 14:41:14,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 185 transitions, 1618 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:14,208 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1277 flow [2024-06-04 14:41:14,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1277, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-06-04 14:41:14,209 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:41:14,209 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1277 flow [2024-06-04 14:41:14,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:14,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:14,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:41:14,209 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)] === [2024-06-04 14:41:14,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash -168682614, now seen corresponding path program 1 times [2024-06-04 14:41:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137153036] [2024-06-04 14:41:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137153036] [2024-06-04 14:41:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137153036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008354551] [2024-06-04 14:41:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:15,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:15,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:15,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:15,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1277 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:15,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:15,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:15,796 INFO L124 PetriNetUnfolderBase]: 2042/3210 cut-off events. [2024-06-04 14:41:15,796 INFO L125 PetriNetUnfolderBase]: For 199212/199212 co-relation queries the response was YES. [2024-06-04 14:41:15,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23163 conditions, 3210 events. 2042/3210 cut-off events. For 199212/199212 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16902 event pairs, 574 based on Foata normal form. 1/3210 useless extension candidates. Maximal degree in co-relation 23098. Up to 2947 conditions per place. [2024-06-04 14:41:15,820 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 143 selfloop transitions, 14 changer transitions 0/177 dead transitions. [2024-06-04 14:41:15,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 177 transitions, 1667 flow [2024-06-04 14:41:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 14:41:15,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-04 14:41:15,821 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1277 flow. Second operand 7 states and 134 transitions. [2024-06-04 14:41:15,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 177 transitions, 1667 flow [2024-06-04 14:41:15,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 1566 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:15,917 INFO L231 Difference]: Finished difference. Result has 140 places, 161 transitions, 1252 flow [2024-06-04 14:41:15,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1252, PETRI_PLACES=140, PETRI_TRANSITIONS=161} [2024-06-04 14:41:15,918 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-04 14:41:15,918 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 1252 flow [2024-06-04 14:41:15,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:15,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:15,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:15,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:41:15,918 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)] === [2024-06-04 14:41:15,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash 499697526, now seen corresponding path program 2 times [2024-06-04 14:41:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554518937] [2024-06-04 14:41:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:16,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554518937] [2024-06-04 14:41:16,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554518937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:16,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:16,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631133871] [2024-06-04 14:41:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:16,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:16,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:16,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 1252 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:16,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:16,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:16,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:17,285 INFO L124 PetriNetUnfolderBase]: 2070/3257 cut-off events. [2024-06-04 14:41:17,286 INFO L125 PetriNetUnfolderBase]: For 209993/209995 co-relation queries the response was YES. [2024-06-04 14:41:17,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23887 conditions, 3257 events. 2070/3257 cut-off events. For 209993/209995 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17211 event pairs, 577 based on Foata normal form. 4/3260 useless extension candidates. Maximal degree in co-relation 23821. Up to 2895 conditions per place. [2024-06-04 14:41:17,310 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 137 selfloop transitions, 29 changer transitions 0/186 dead transitions. [2024-06-04 14:41:17,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 186 transitions, 1824 flow [2024-06-04 14:41:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:41:17,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:41:17,311 INFO L175 Difference]: Start difference. First operand has 140 places, 161 transitions, 1252 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:41:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 186 transitions, 1824 flow [2024-06-04 14:41:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 186 transitions, 1770 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:17,436 INFO L231 Difference]: Finished difference. Result has 143 places, 169 transitions, 1402 flow [2024-06-04 14:41:17,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1402, PETRI_PLACES=143, PETRI_TRANSITIONS=169} [2024-06-04 14:41:17,437 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 98 predicate places. [2024-06-04 14:41:17,437 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 169 transitions, 1402 flow [2024-06-04 14:41:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:17,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:17,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:41:17,437 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)] === [2024-06-04 14:41:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1117233217, now seen corresponding path program 7 times [2024-06-04 14:41:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903279202] [2024-06-04 14:41:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:18,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903279202] [2024-06-04 14:41:18,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903279202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:18,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:18,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120992486] [2024-06-04 14:41:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:18,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:18,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 169 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:18,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:18,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:19,074 INFO L124 PetriNetUnfolderBase]: 2187/3371 cut-off events. [2024-06-04 14:41:19,074 INFO L125 PetriNetUnfolderBase]: For 220985/220991 co-relation queries the response was YES. [2024-06-04 14:41:19,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25149 conditions, 3371 events. 2187/3371 cut-off events. For 220985/220991 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17312 event pairs, 612 based on Foata normal form. 7/3376 useless extension candidates. Maximal degree in co-relation 25081. Up to 3069 conditions per place. [2024-06-04 14:41:19,101 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 152 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2024-06-04 14:41:19,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 193 transitions, 1838 flow [2024-06-04 14:41:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:41:19,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:41:19,102 INFO L175 Difference]: Start difference. First operand has 143 places, 169 transitions, 1402 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:41:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 193 transitions, 1838 flow [2024-06-04 14:41:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 193 transitions, 1735 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-04 14:41:19,224 INFO L231 Difference]: Finished difference. Result has 148 places, 169 transitions, 1378 flow [2024-06-04 14:41:19,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=148, PETRI_TRANSITIONS=169} [2024-06-04 14:41:19,225 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 103 predicate places. [2024-06-04 14:41:19,225 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 169 transitions, 1378 flow [2024-06-04 14:41:19,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:19,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:41:19,225 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:19,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1098146982, now seen corresponding path program 2 times [2024-06-04 14:41:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694345904] [2024-06-04 14:41:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:20,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694345904] [2024-06-04 14:41:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694345904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803525727] [2024-06-04 14:41:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:20,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:20,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:20,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 169 transitions, 1378 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:20,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:20,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:20,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:20,865 INFO L124 PetriNetUnfolderBase]: 2067/3253 cut-off events. [2024-06-04 14:41:20,865 INFO L125 PetriNetUnfolderBase]: For 227913/227919 co-relation queries the response was YES. [2024-06-04 14:41:20,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24800 conditions, 3253 events. 2067/3253 cut-off events. For 227913/227919 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17192 event pairs, 580 based on Foata normal form. 7/3259 useless extension candidates. Maximal degree in co-relation 24730. Up to 2979 conditions per place. [2024-06-04 14:41:20,893 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 143 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2024-06-04 14:41:20,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 182 transitions, 1772 flow [2024-06-04 14:41:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 14:41:20,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-04 14:41:20,894 INFO L175 Difference]: Start difference. First operand has 148 places, 169 transitions, 1378 flow. Second operand 7 states and 130 transitions. [2024-06-04 14:41:20,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 182 transitions, 1772 flow [2024-06-04 14:41:20,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 182 transitions, 1678 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:20,999 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1380 flow [2024-06-04 14:41:21,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1380, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-06-04 14:41:21,000 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 103 predicate places. [2024-06-04 14:41:21,000 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1380 flow [2024-06-04 14:41:21,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:21,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:21,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:21,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:41:21,001 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 244623832, now seen corresponding path program 3 times [2024-06-04 14:41:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49544382] [2024-06-04 14:41:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49544382] [2024-06-04 14:41:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49544382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:21,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:21,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164657238] [2024-06-04 14:41:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:21,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:21,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:21,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1380 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:21,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:21,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:21,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:22,498 INFO L124 PetriNetUnfolderBase]: 2071/3260 cut-off events. [2024-06-04 14:41:22,498 INFO L125 PetriNetUnfolderBase]: For 236903/236905 co-relation queries the response was YES. [2024-06-04 14:41:22,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25185 conditions, 3260 events. 2071/3260 cut-off events. For 236903/236905 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17237 event pairs, 592 based on Foata normal form. 4/3263 useless extension candidates. Maximal degree in co-relation 25114. Up to 2869 conditions per place. [2024-06-04 14:41:22,527 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 131 selfloop transitions, 44 changer transitions 0/195 dead transitions. [2024-06-04 14:41:22,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 195 transitions, 2098 flow [2024-06-04 14:41:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:41:22,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:41:22,528 INFO L175 Difference]: Start difference. First operand has 148 places, 172 transitions, 1380 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:41:22,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 195 transitions, 2098 flow [2024-06-04 14:41:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 195 transitions, 2022 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:22,684 INFO L231 Difference]: Finished difference. Result has 153 places, 182 transitions, 1574 flow [2024-06-04 14:41:22,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1574, PETRI_PLACES=153, PETRI_TRANSITIONS=182} [2024-06-04 14:41:22,685 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2024-06-04 14:41:22,685 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 182 transitions, 1574 flow [2024-06-04 14:41:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:22,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:22,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:41:22,685 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1786193000, now seen corresponding path program 3 times [2024-06-04 14:41:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695791057] [2024-06-04 14:41:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:23,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695791057] [2024-06-04 14:41:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695791057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:23,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:23,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:23,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334242057] [2024-06-04 14:41:23,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:23,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:23,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:23,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:23,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 182 transitions, 1574 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:23,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:23,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:24,360 INFO L124 PetriNetUnfolderBase]: 2081/3259 cut-off events. [2024-06-04 14:41:24,361 INFO L125 PetriNetUnfolderBase]: For 248143/248149 co-relation queries the response was YES. [2024-06-04 14:41:24,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25969 conditions, 3259 events. 2081/3259 cut-off events. For 248143/248149 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16961 event pairs, 584 based on Foata normal form. 7/3265 useless extension candidates. Maximal degree in co-relation 25895. Up to 2985 conditions per place. [2024-06-04 14:41:24,388 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 151 selfloop transitions, 27 changer transitions 0/198 dead transitions. [2024-06-04 14:41:24,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 198 transitions, 2027 flow [2024-06-04 14:41:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-04 14:41:24,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253246753246753 [2024-06-04 14:41:24,390 INFO L175 Difference]: Start difference. First operand has 153 places, 182 transitions, 1574 flow. Second operand 7 states and 131 transitions. [2024-06-04 14:41:24,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 198 transitions, 2027 flow [2024-06-04 14:41:24,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 198 transitions, 1893 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-04 14:41:24,536 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 1592 flow [2024-06-04 14:41:24,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1592, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2024-06-04 14:41:24,536 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 113 predicate places. [2024-06-04 14:41:24,537 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 1592 flow [2024-06-04 14:41:24,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:24,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:24,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:24,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:41:24,537 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)] === [2024-06-04 14:41:24,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 8453680, now seen corresponding path program 1 times [2024-06-04 14:41:24,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:24,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488557364] [2024-06-04 14:41:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488557364] [2024-06-04 14:41:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488557364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:25,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:25,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482773757] [2024-06-04 14:41:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:25,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:25,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:25,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 1592 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:25,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:25,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:25,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:25,940 INFO L124 PetriNetUnfolderBase]: 2059/3237 cut-off events. [2024-06-04 14:41:25,940 INFO L125 PetriNetUnfolderBase]: For 259202/259202 co-relation queries the response was YES. [2024-06-04 14:41:25,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 3237 events. 2059/3237 cut-off events. For 259202/259202 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16845 event pairs, 528 based on Foata normal form. 1/3237 useless extension candidates. Maximal degree in co-relation 25873. Up to 2993 conditions per place. [2024-06-04 14:41:25,970 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 182 selfloop transitions, 16 changer transitions 0/208 dead transitions. [2024-06-04 14:41:25,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 208 transitions, 2082 flow [2024-06-04 14:41:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:41:25,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:41:25,971 INFO L175 Difference]: Start difference. First operand has 158 places, 188 transitions, 1592 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:41:25,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 208 transitions, 2082 flow [2024-06-04 14:41:26,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 208 transitions, 2014 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-04 14:41:26,152 INFO L231 Difference]: Finished difference. Result has 164 places, 193 transitions, 1629 flow [2024-06-04 14:41:26,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1629, PETRI_PLACES=164, PETRI_TRANSITIONS=193} [2024-06-04 14:41:26,153 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 119 predicate places. [2024-06-04 14:41:26,153 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 193 transitions, 1629 flow [2024-06-04 14:41:26,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:26,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:26,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:26,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:41:26,153 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)] === [2024-06-04 14:41:26,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2142870976, now seen corresponding path program 2 times [2024-06-04 14:41:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610095540] [2024-06-04 14:41:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:26,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610095540] [2024-06-04 14:41:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610095540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:26,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:26,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240277576] [2024-06-04 14:41:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:26,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:26,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:26,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 193 transitions, 1629 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:26,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:26,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:27,533 INFO L124 PetriNetUnfolderBase]: 2064/3244 cut-off events. [2024-06-04 14:41:27,533 INFO L125 PetriNetUnfolderBase]: For 269219/269219 co-relation queries the response was YES. [2024-06-04 14:41:27,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26496 conditions, 3244 events. 2064/3244 cut-off events. For 269219/269219 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16870 event pairs, 528 based on Foata normal form. 1/3244 useless extension candidates. Maximal degree in co-relation 26416. Up to 2994 conditions per place. [2024-06-04 14:41:27,561 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 178 selfloop transitions, 20 changer transitions 0/208 dead transitions. [2024-06-04 14:41:27,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 208 transitions, 2105 flow [2024-06-04 14:41:27,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 14:41:27,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:41:27,562 INFO L175 Difference]: Start difference. First operand has 164 places, 193 transitions, 1629 flow. Second operand 7 states and 133 transitions. [2024-06-04 14:41:27,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 208 transitions, 2105 flow [2024-06-04 14:41:27,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 208 transitions, 2041 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:27,718 INFO L231 Difference]: Finished difference. Result has 166 places, 196 transitions, 1667 flow [2024-06-04 14:41:27,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1667, PETRI_PLACES=166, PETRI_TRANSITIONS=196} [2024-06-04 14:41:27,719 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2024-06-04 14:41:27,719 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 196 transitions, 1667 flow [2024-06-04 14:41:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:27,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:27,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:27,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:41:27,720 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)] === [2024-06-04 14:41:27,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash 868284094, now seen corresponding path program 1 times [2024-06-04 14:41:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:27,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171986553] [2024-06-04 14:41:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:27,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171986553] [2024-06-04 14:41:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171986553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:28,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982378673] [2024-06-04 14:41:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:28,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:28,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 196 transitions, 1667 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:28,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:28,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:29,379 INFO L124 PetriNetUnfolderBase]: 1982/3168 cut-off events. [2024-06-04 14:41:29,379 INFO L125 PetriNetUnfolderBase]: For 282179/282179 co-relation queries the response was YES. [2024-06-04 14:41:29,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26492 conditions, 3168 events. 1982/3168 cut-off events. For 282179/282179 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16854 event pairs, 527 based on Foata normal form. 3/3170 useless extension candidates. Maximal degree in co-relation 26411. Up to 2791 conditions per place. [2024-06-04 14:41:29,409 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 170 selfloop transitions, 15 changer transitions 0/212 dead transitions. [2024-06-04 14:41:29,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 212 transitions, 2113 flow [2024-06-04 14:41:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:41:29,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:41:29,410 INFO L175 Difference]: Start difference. First operand has 166 places, 196 transitions, 1667 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:41:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 212 transitions, 2113 flow [2024-06-04 14:41:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 212 transitions, 2033 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:29,610 INFO L231 Difference]: Finished difference. Result has 168 places, 199 transitions, 1673 flow [2024-06-04 14:41:29,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1673, PETRI_PLACES=168, PETRI_TRANSITIONS=199} [2024-06-04 14:41:29,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 123 predicate places. [2024-06-04 14:41:29,611 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 199 transitions, 1673 flow [2024-06-04 14:41:29,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:29,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:29,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:41:29,611 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)] === [2024-06-04 14:41:29,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1098331494, now seen corresponding path program 2 times [2024-06-04 14:41:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328516101] [2024-06-04 14:41:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328516101] [2024-06-04 14:41:30,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328516101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:30,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:30,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:30,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291999010] [2024-06-04 14:41:30,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:30,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:30,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:30,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 199 transitions, 1673 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:30,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:30,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:30,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:31,338 INFO L124 PetriNetUnfolderBase]: 1992/3185 cut-off events. [2024-06-04 14:41:31,338 INFO L125 PetriNetUnfolderBase]: For 292405/292407 co-relation queries the response was YES. [2024-06-04 14:41:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27061 conditions, 3185 events. 1992/3185 cut-off events. For 292405/292407 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16944 event pairs, 531 based on Foata normal form. 5/3189 useless extension candidates. Maximal degree in co-relation 26979. Up to 2799 conditions per place. [2024-06-04 14:41:31,367 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 165 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-06-04 14:41:31,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 212 transitions, 2117 flow [2024-06-04 14:41:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:41:31,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:41:31,368 INFO L175 Difference]: Start difference. First operand has 168 places, 199 transitions, 1673 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:41:31,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 212 transitions, 2117 flow [2024-06-04 14:41:31,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 212 transitions, 2053 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:31,591 INFO L231 Difference]: Finished difference. Result has 170 places, 202 transitions, 1711 flow [2024-06-04 14:41:31,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1711, PETRI_PLACES=170, PETRI_TRANSITIONS=202} [2024-06-04 14:41:31,592 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 125 predicate places. [2024-06-04 14:41:31,592 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 202 transitions, 1711 flow [2024-06-04 14:41:31,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:31,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:31,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:41:31,592 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)] === [2024-06-04 14:41:31,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1098331246, now seen corresponding path program 3 times [2024-06-04 14:41:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:31,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490552185] [2024-06-04 14:41:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490552185] [2024-06-04 14:41:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490552185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859529497] [2024-06-04 14:41:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:32,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:32,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 202 transitions, 1711 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:32,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:32,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:32,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:33,045 INFO L124 PetriNetUnfolderBase]: 2081/3274 cut-off events. [2024-06-04 14:41:33,045 INFO L125 PetriNetUnfolderBase]: For 299103/299105 co-relation queries the response was YES. [2024-06-04 14:41:33,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27984 conditions, 3274 events. 2081/3274 cut-off events. For 299103/299105 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17069 event pairs, 535 based on Foata normal form. 3/3276 useless extension candidates. Maximal degree in co-relation 27901. Up to 3009 conditions per place. [2024-06-04 14:41:33,074 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 177 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-06-04 14:41:33,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 214 transitions, 2201 flow [2024-06-04 14:41:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:41:33,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:41:33,076 INFO L175 Difference]: Start difference. First operand has 170 places, 202 transitions, 1711 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:41:33,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 214 transitions, 2201 flow [2024-06-04 14:41:33,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 214 transitions, 2121 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:33,289 INFO L231 Difference]: Finished difference. Result has 172 places, 205 transitions, 1757 flow [2024-06-04 14:41:33,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1757, PETRI_PLACES=172, PETRI_TRANSITIONS=205} [2024-06-04 14:41:33,289 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2024-06-04 14:41:33,289 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 205 transitions, 1757 flow [2024-06-04 14:41:33,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:33,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:33,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:33,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:41:33,289 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)] === [2024-06-04 14:41:33,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 874779214, now seen corresponding path program 3 times [2024-06-04 14:41:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574310160] [2024-06-04 14:41:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574310160] [2024-06-04 14:41:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574310160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:34,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:34,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134067922] [2024-06-04 14:41:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:34,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:34,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 205 transitions, 1757 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:34,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:34,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:34,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:34,987 INFO L124 PetriNetUnfolderBase]: 1980/3169 cut-off events. [2024-06-04 14:41:34,987 INFO L125 PetriNetUnfolderBase]: For 307299/307301 co-relation queries the response was YES. [2024-06-04 14:41:35,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27526 conditions, 3169 events. 1980/3169 cut-off events. For 307299/307301 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16978 event pairs, 529 based on Foata normal form. 5/3173 useless extension candidates. Maximal degree in co-relation 27442. Up to 2763 conditions per place. [2024-06-04 14:41:35,017 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 161 selfloop transitions, 30 changer transitions 0/219 dead transitions. [2024-06-04 14:41:35,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 219 transitions, 2223 flow [2024-06-04 14:41:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:41:35,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:41:35,020 INFO L175 Difference]: Start difference. First operand has 172 places, 205 transitions, 1757 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:41:35,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 219 transitions, 2223 flow [2024-06-04 14:41:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 219 transitions, 2119 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:35,280 INFO L231 Difference]: Finished difference. Result has 174 places, 208 transitions, 1784 flow [2024-06-04 14:41:35,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1784, PETRI_PLACES=174, PETRI_TRANSITIONS=208} [2024-06-04 14:41:35,281 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 129 predicate places. [2024-06-04 14:41:35,281 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 208 transitions, 1784 flow [2024-06-04 14:41:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:35,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:35,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:41:35,281 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash 445521030, now seen corresponding path program 1 times [2024-06-04 14:41:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925484364] [2024-06-04 14:41:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925484364] [2024-06-04 14:41:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925484364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126651098] [2024-06-04 14:41:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:36,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:36,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:36,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 208 transitions, 1784 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:36,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:36,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:37,204 INFO L124 PetriNetUnfolderBase]: 2313/3573 cut-off events. [2024-06-04 14:41:37,205 INFO L125 PetriNetUnfolderBase]: For 342463/342465 co-relation queries the response was YES. [2024-06-04 14:41:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30258 conditions, 3573 events. 2313/3573 cut-off events. For 342463/342465 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18559 event pairs, 460 based on Foata normal form. 24/3596 useless extension candidates. Maximal degree in co-relation 30173. Up to 2904 conditions per place. [2024-06-04 14:41:37,239 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 173 selfloop transitions, 67 changer transitions 0/245 dead transitions. [2024-06-04 14:41:37,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 245 transitions, 2418 flow [2024-06-04 14:41:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-04 14:41:37,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:41:37,240 INFO L175 Difference]: Start difference. First operand has 174 places, 208 transitions, 1784 flow. Second operand 9 states and 186 transitions. [2024-06-04 14:41:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 245 transitions, 2418 flow [2024-06-04 14:41:37,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 245 transitions, 2311 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:37,471 INFO L231 Difference]: Finished difference. Result has 178 places, 210 transitions, 1871 flow [2024-06-04 14:41:37,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1871, PETRI_PLACES=178, PETRI_TRANSITIONS=210} [2024-06-04 14:41:37,472 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2024-06-04 14:41:37,472 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 210 transitions, 1871 flow [2024-06-04 14:41:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:37,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:37,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:37,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:41:37,473 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:37,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash -807488480, now seen corresponding path program 2 times [2024-06-04 14:41:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:37,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714600040] [2024-06-04 14:41:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714600040] [2024-06-04 14:41:38,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714600040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:38,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:38,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:38,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471917619] [2024-06-04 14:41:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:38,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:38,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:38,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 210 transitions, 1871 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:38,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:38,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:38,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:39,367 INFO L124 PetriNetUnfolderBase]: 2371/3681 cut-off events. [2024-06-04 14:41:39,367 INFO L125 PetriNetUnfolderBase]: For 348517/348519 co-relation queries the response was YES. [2024-06-04 14:41:39,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31256 conditions, 3681 events. 2371/3681 cut-off events. For 348517/348519 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19381 event pairs, 460 based on Foata normal form. 16/3696 useless extension candidates. Maximal degree in co-relation 31170. Up to 2892 conditions per place. [2024-06-04 14:41:39,459 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 176 selfloop transitions, 69 changer transitions 0/250 dead transitions. [2024-06-04 14:41:39,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 250 transitions, 2507 flow [2024-06-04 14:41:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:41:39,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:41:39,461 INFO L175 Difference]: Start difference. First operand has 178 places, 210 transitions, 1871 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:41:39,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 250 transitions, 2507 flow [2024-06-04 14:41:39,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 250 transitions, 2341 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:39,667 INFO L231 Difference]: Finished difference. Result has 180 places, 211 transitions, 1877 flow [2024-06-04 14:41:39,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1877, PETRI_PLACES=180, PETRI_TRANSITIONS=211} [2024-06-04 14:41:39,668 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-04 14:41:39,668 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 211 transitions, 1877 flow [2024-06-04 14:41:39,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:39,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:39,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:39,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:41:39,669 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:39,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2048280616, now seen corresponding path program 3 times [2024-06-04 14:41:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558408247] [2024-06-04 14:41:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558408247] [2024-06-04 14:41:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558408247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885119661] [2024-06-04 14:41:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:40,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:40,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:40,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 211 transitions, 1877 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:40,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:40,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:40,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:41,437 INFO L124 PetriNetUnfolderBase]: 2429/3789 cut-off events. [2024-06-04 14:41:41,437 INFO L125 PetriNetUnfolderBase]: For 362191/362193 co-relation queries the response was YES. [2024-06-04 14:41:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31755 conditions, 3789 events. 2429/3789 cut-off events. For 362191/362193 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20222 event pairs, 473 based on Foata normal form. 16/3804 useless extension candidates. Maximal degree in co-relation 31668. Up to 2857 conditions per place. [2024-06-04 14:41:41,471 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 175 selfloop transitions, 72 changer transitions 0/252 dead transitions. [2024-06-04 14:41:41,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 252 transitions, 2521 flow [2024-06-04 14:41:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-04 14:41:41,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-04 14:41:41,472 INFO L175 Difference]: Start difference. First operand has 180 places, 211 transitions, 1877 flow. Second operand 9 states and 190 transitions. [2024-06-04 14:41:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 252 transitions, 2521 flow [2024-06-04 14:41:41,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 252 transitions, 2365 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:41,691 INFO L231 Difference]: Finished difference. Result has 182 places, 212 transitions, 1901 flow [2024-06-04 14:41:41,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1901, PETRI_PLACES=182, PETRI_TRANSITIONS=212} [2024-06-04 14:41:41,692 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 137 predicate places. [2024-06-04 14:41:41,692 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 212 transitions, 1901 flow [2024-06-04 14:41:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:41,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:41,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:41,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:41:41,692 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:41,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1990188166, now seen corresponding path program 4 times [2024-06-04 14:41:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:41,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383553530] [2024-06-04 14:41:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383553530] [2024-06-04 14:41:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383553530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691227115] [2024-06-04 14:41:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:42,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 212 transitions, 1901 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:42,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:42,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:42,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:43,508 INFO L124 PetriNetUnfolderBase]: 2573/4049 cut-off events. [2024-06-04 14:41:43,508 INFO L125 PetriNetUnfolderBase]: For 394702/394704 co-relation queries the response was YES. [2024-06-04 14:41:43,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34018 conditions, 4049 events. 2573/4049 cut-off events. For 394702/394704 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22176 event pairs, 417 based on Foata normal form. 16/4064 useless extension candidates. Maximal degree in co-relation 33930. Up to 2495 conditions per place. [2024-06-04 14:41:43,544 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 176 selfloop transitions, 76 changer transitions 0/257 dead transitions. [2024-06-04 14:41:43,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 257 transitions, 2803 flow [2024-06-04 14:41:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:41:43,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:41:43,545 INFO L175 Difference]: Start difference. First operand has 182 places, 212 transitions, 1901 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:41:43,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 257 transitions, 2803 flow [2024-06-04 14:41:43,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 257 transitions, 2639 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:43,806 INFO L231 Difference]: Finished difference. Result has 184 places, 214 transitions, 1957 flow [2024-06-04 14:41:43,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1957, PETRI_PLACES=184, PETRI_TRANSITIONS=214} [2024-06-04 14:41:43,806 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 139 predicate places. [2024-06-04 14:41:43,806 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 214 transitions, 1957 flow [2024-06-04 14:41:43,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:43,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:43,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:43,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:41:43,807 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)] === [2024-06-04 14:41:43,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:43,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1700344446, now seen corresponding path program 1 times [2024-06-04 14:41:43,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:43,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708049045] [2024-06-04 14:41:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708049045] [2024-06-04 14:41:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708049045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:41:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255969911] [2024-06-04 14:41:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:41:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:41:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:41:45,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:45,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 214 transitions, 1957 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:45,801 INFO L124 PetriNetUnfolderBase]: 2434/3905 cut-off events. [2024-06-04 14:41:45,801 INFO L125 PetriNetUnfolderBase]: For 390976/390978 co-relation queries the response was YES. [2024-06-04 14:41:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33473 conditions, 3905 events. 2434/3905 cut-off events. For 390976/390978 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22055 event pairs, 666 based on Foata normal form. 4/3896 useless extension candidates. Maximal degree in co-relation 33384. Up to 3516 conditions per place. [2024-06-04 14:41:45,838 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 186 selfloop transitions, 30 changer transitions 0/239 dead transitions. [2024-06-04 14:41:45,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 239 transitions, 2520 flow [2024-06-04 14:41:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:41:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:41:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:41:45,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:41:45,839 INFO L175 Difference]: Start difference. First operand has 184 places, 214 transitions, 1957 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:41:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 239 transitions, 2520 flow [2024-06-04 14:41:46,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 239 transitions, 2425 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:46,033 INFO L231 Difference]: Finished difference. Result has 187 places, 218 transitions, 2009 flow [2024-06-04 14:41:46,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2009, PETRI_PLACES=187, PETRI_TRANSITIONS=218} [2024-06-04 14:41:46,033 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 142 predicate places. [2024-06-04 14:41:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 218 transitions, 2009 flow [2024-06-04 14:41:46,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:46,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:46,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:46,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:41:46,034 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:46,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1681939126, now seen corresponding path program 5 times [2024-06-04 14:41:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041583513] [2024-06-04 14:41:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041583513] [2024-06-04 14:41:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041583513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005345943] [2024-06-04 14:41:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:46,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:46,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 218 transitions, 2009 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:46,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:46,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:46,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:47,946 INFO L124 PetriNetUnfolderBase]: 2702/4286 cut-off events. [2024-06-04 14:41:47,946 INFO L125 PetriNetUnfolderBase]: For 436058/436060 co-relation queries the response was YES. [2024-06-04 14:41:47,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36467 conditions, 4286 events. 2702/4286 cut-off events. For 436058/436060 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24043 event pairs, 492 based on Foata normal form. 16/4301 useless extension candidates. Maximal degree in co-relation 36376. Up to 3205 conditions per place. [2024-06-04 14:41:47,990 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 181 selfloop transitions, 79 changer transitions 0/265 dead transitions. [2024-06-04 14:41:47,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 2928 flow [2024-06-04 14:41:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-04 14:41:47,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-04 14:41:47,991 INFO L175 Difference]: Start difference. First operand has 187 places, 218 transitions, 2009 flow. Second operand 9 states and 195 transitions. [2024-06-04 14:41:47,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 2928 flow [2024-06-04 14:41:48,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 2809 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:48,270 INFO L231 Difference]: Finished difference. Result has 190 places, 220 transitions, 2120 flow [2024-06-04 14:41:48,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2120, PETRI_PLACES=190, PETRI_TRANSITIONS=220} [2024-06-04 14:41:48,271 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 145 predicate places. [2024-06-04 14:41:48,271 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 220 transitions, 2120 flow [2024-06-04 14:41:48,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:48,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:48,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:48,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:41:48,271 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:48,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash -428991926, now seen corresponding path program 6 times [2024-06-04 14:41:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110794128] [2024-06-04 14:41:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:49,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110794128] [2024-06-04 14:41:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110794128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:49,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472263966] [2024-06-04 14:41:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:49,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:49,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:49,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 220 transitions, 2120 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:49,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:49,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:49,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:50,289 INFO L124 PetriNetUnfolderBase]: 2871/4565 cut-off events. [2024-06-04 14:41:50,289 INFO L125 PetriNetUnfolderBase]: For 481970/481972 co-relation queries the response was YES. [2024-06-04 14:41:50,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39495 conditions, 4565 events. 2871/4565 cut-off events. For 481970/481972 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26117 event pairs, 669 based on Foata normal form. 16/4580 useless extension candidates. Maximal degree in co-relation 39403. Up to 3696 conditions per place. [2024-06-04 14:41:50,337 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 188 selfloop transitions, 74 changer transitions 0/267 dead transitions. [2024-06-04 14:41:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 267 transitions, 3053 flow [2024-06-04 14:41:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-04 14:41:50,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-04 14:41:50,338 INFO L175 Difference]: Start difference. First operand has 190 places, 220 transitions, 2120 flow. Second operand 9 states and 195 transitions. [2024-06-04 14:41:50,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 267 transitions, 3053 flow [2024-06-04 14:41:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 267 transitions, 2939 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:50,624 INFO L231 Difference]: Finished difference. Result has 194 places, 222 transitions, 2230 flow [2024-06-04 14:41:50,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2230, PETRI_PLACES=194, PETRI_TRANSITIONS=222} [2024-06-04 14:41:50,624 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 149 predicate places. [2024-06-04 14:41:50,625 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 222 transitions, 2230 flow [2024-06-04 14:41:50,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:50,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:50,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:50,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:41:50,625 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1624346786, now seen corresponding path program 7 times [2024-06-04 14:41:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:50,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508178630] [2024-06-04 14:41:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:50,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:51,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:51,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508178630] [2024-06-04 14:41:51,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508178630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:51,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:51,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636302309] [2024-06-04 14:41:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:51,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:51,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 222 transitions, 2230 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:51,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:51,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:52,688 INFO L124 PetriNetUnfolderBase]: 2835/4509 cut-off events. [2024-06-04 14:41:52,688 INFO L125 PetriNetUnfolderBase]: For 475280/475282 co-relation queries the response was YES. [2024-06-04 14:41:52,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38598 conditions, 4509 events. 2835/4509 cut-off events. For 475280/475282 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25770 event pairs, 671 based on Foata normal form. 20/4528 useless extension candidates. Maximal degree in co-relation 38504. Up to 3796 conditions per place. [2024-06-04 14:41:52,735 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 184 selfloop transitions, 72 changer transitions 0/261 dead transitions. [2024-06-04 14:41:52,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 261 transitions, 2867 flow [2024-06-04 14:41:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:41:52,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:41:52,736 INFO L175 Difference]: Start difference. First operand has 194 places, 222 transitions, 2230 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:41:52,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 261 transitions, 2867 flow [2024-06-04 14:41:53,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 261 transitions, 2736 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:53,111 INFO L231 Difference]: Finished difference. Result has 198 places, 222 transitions, 2250 flow [2024-06-04 14:41:53,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2250, PETRI_PLACES=198, PETRI_TRANSITIONS=222} [2024-06-04 14:41:53,112 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 153 predicate places. [2024-06-04 14:41:53,112 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 222 transitions, 2250 flow [2024-06-04 14:41:53,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:53,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:53,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:53,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:41:53,113 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:53,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash -371898746, now seen corresponding path program 8 times [2024-06-04 14:41:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998712377] [2024-06-04 14:41:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998712377] [2024-06-04 14:41:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998712377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:53,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043171565] [2024-06-04 14:41:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:53,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:54,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 222 transitions, 2250 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:54,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:54,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:55,182 INFO L124 PetriNetUnfolderBase]: 2910/4634 cut-off events. [2024-06-04 14:41:55,182 INFO L125 PetriNetUnfolderBase]: For 489445/489447 co-relation queries the response was YES. [2024-06-04 14:41:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39473 conditions, 4634 events. 2910/4634 cut-off events. For 489445/489447 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26715 event pairs, 686 based on Foata normal form. 20/4653 useless extension candidates. Maximal degree in co-relation 39377. Up to 3921 conditions per place. [2024-06-04 14:41:55,231 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 188 selfloop transitions, 67 changer transitions 0/260 dead transitions. [2024-06-04 14:41:55,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 260 transitions, 2912 flow [2024-06-04 14:41:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-04 14:41:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-04 14:41:55,232 INFO L175 Difference]: Start difference. First operand has 198 places, 222 transitions, 2250 flow. Second operand 9 states and 187 transitions. [2024-06-04 14:41:55,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 260 transitions, 2912 flow [2024-06-04 14:41:55,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 260 transitions, 2763 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:55,631 INFO L231 Difference]: Finished difference. Result has 199 places, 223 transitions, 2280 flow [2024-06-04 14:41:55,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2280, PETRI_PLACES=199, PETRI_TRANSITIONS=223} [2024-06-04 14:41:55,632 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 154 predicate places. [2024-06-04 14:41:55,632 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 223 transitions, 2280 flow [2024-06-04 14:41:55,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:55,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:55,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:55,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:41:55,632 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash -365642636, now seen corresponding path program 9 times [2024-06-04 14:41:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053259480] [2024-06-04 14:41:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053259480] [2024-06-04 14:41:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053259480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:56,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:56,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447133146] [2024-06-04 14:41:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:56,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:56,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:56,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 223 transitions, 2280 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:56,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:56,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:56,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:57,734 INFO L124 PetriNetUnfolderBase]: 2985/4769 cut-off events. [2024-06-04 14:41:57,736 INFO L125 PetriNetUnfolderBase]: For 508685/508687 co-relation queries the response was YES. [2024-06-04 14:41:57,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40448 conditions, 4769 events. 2985/4769 cut-off events. For 508685/508687 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27838 event pairs, 710 based on Foata normal form. 20/4788 useless extension candidates. Maximal degree in co-relation 40351. Up to 4046 conditions per place. [2024-06-04 14:41:57,786 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 187 selfloop transitions, 68 changer transitions 0/260 dead transitions. [2024-06-04 14:41:57,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 260 transitions, 2940 flow [2024-06-04 14:41:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:41:57,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:41:57,788 INFO L175 Difference]: Start difference. First operand has 199 places, 223 transitions, 2280 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:41:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 260 transitions, 2940 flow [2024-06-04 14:41:58,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 260 transitions, 2787 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:58,279 INFO L231 Difference]: Finished difference. Result has 201 places, 224 transitions, 2310 flow [2024-06-04 14:41:58,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=201, PETRI_TRANSITIONS=224} [2024-06-04 14:41:58,280 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 156 predicate places. [2024-06-04 14:41:58,280 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 224 transitions, 2310 flow [2024-06-04 14:41:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:58,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:58,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:58,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:41:58,281 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:58,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1511121376, now seen corresponding path program 10 times [2024-06-04 14:41:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:58,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476294920] [2024-06-04 14:41:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:59,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:59,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476294920] [2024-06-04 14:41:59,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476294920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:59,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:59,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:59,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565141280] [2024-06-04 14:41:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:59,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:59,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:59,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:59,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 224 transitions, 2310 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:59,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:59,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:00,455 INFO L124 PetriNetUnfolderBase]: 3043/4867 cut-off events. [2024-06-04 14:42:00,455 INFO L125 PetriNetUnfolderBase]: For 519465/519467 co-relation queries the response was YES. [2024-06-04 14:42:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41102 conditions, 4867 events. 3043/4867 cut-off events. For 519465/519467 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28548 event pairs, 696 based on Foata normal form. 16/4882 useless extension candidates. Maximal degree in co-relation 41004. Up to 3914 conditions per place. [2024-06-04 14:42:00,500 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 190 selfloop transitions, 70 changer transitions 0/265 dead transitions. [2024-06-04 14:42:00,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 265 transitions, 2996 flow [2024-06-04 14:42:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:42:00,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:42:00,501 INFO L175 Difference]: Start difference. First operand has 201 places, 224 transitions, 2310 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:42:00,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 265 transitions, 2996 flow [2024-06-04 14:42:00,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 265 transitions, 2839 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:00,880 INFO L231 Difference]: Finished difference. Result has 203 places, 225 transitions, 2341 flow [2024-06-04 14:42:00,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2341, PETRI_PLACES=203, PETRI_TRANSITIONS=225} [2024-06-04 14:42:00,880 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 158 predicate places. [2024-06-04 14:42:00,880 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 225 transitions, 2341 flow [2024-06-04 14:42:00,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:00,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:00,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:00,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:42:00,881 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:00,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1150106675, now seen corresponding path program 1 times [2024-06-04 14:42:00,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:00,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259264150] [2024-06-04 14:42:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:00,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259264150] [2024-06-04 14:42:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259264150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:01,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85855877] [2024-06-04 14:42:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:01,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:01,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 225 transitions, 2341 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:01,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:01,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:01,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:02,629 INFO L124 PetriNetUnfolderBase]: 2945/4790 cut-off events. [2024-06-04 14:42:02,629 INFO L125 PetriNetUnfolderBase]: For 513741/513745 co-relation queries the response was YES. [2024-06-04 14:42:02,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41061 conditions, 4790 events. 2945/4790 cut-off events. For 513741/513745 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28783 event pairs, 817 based on Foata normal form. 6/4759 useless extension candidates. Maximal degree in co-relation 40962. Up to 4323 conditions per place. [2024-06-04 14:42:02,677 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 201 selfloop transitions, 33 changer transitions 0/257 dead transitions. [2024-06-04 14:42:02,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 257 transitions, 3055 flow [2024-06-04 14:42:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:42:02,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:42:02,678 INFO L175 Difference]: Start difference. First operand has 203 places, 225 transitions, 2341 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:42:02,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 257 transitions, 3055 flow [2024-06-04 14:42:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 257 transitions, 2873 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:03,113 INFO L231 Difference]: Finished difference. Result has 206 places, 239 transitions, 2453 flow [2024-06-04 14:42:03,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2453, PETRI_PLACES=206, PETRI_TRANSITIONS=239} [2024-06-04 14:42:03,113 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:42:03,113 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 239 transitions, 2453 flow [2024-06-04 14:42:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:03,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:03,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:42:03,114 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash -934202645, now seen corresponding path program 2 times [2024-06-04 14:42:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983568275] [2024-06-04 14:42:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983568275] [2024-06-04 14:42:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983568275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:03,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:03,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338167536] [2024-06-04 14:42:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:03,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:03,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 239 transitions, 2453 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:03,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:03,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:03,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:04,819 INFO L124 PetriNetUnfolderBase]: 2955/4803 cut-off events. [2024-06-04 14:42:04,819 INFO L125 PetriNetUnfolderBase]: For 523893/523897 co-relation queries the response was YES. [2024-06-04 14:42:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40989 conditions, 4803 events. 2955/4803 cut-off events. For 523893/523897 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28894 event pairs, 807 based on Foata normal form. 4/4770 useless extension candidates. Maximal degree in co-relation 40887. Up to 4293 conditions per place. [2024-06-04 14:42:04,870 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 190 selfloop transitions, 45 changer transitions 0/258 dead transitions. [2024-06-04 14:42:04,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 258 transitions, 3154 flow [2024-06-04 14:42:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:42:04,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:42:04,871 INFO L175 Difference]: Start difference. First operand has 206 places, 239 transitions, 2453 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:42:04,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 258 transitions, 3154 flow [2024-06-04 14:42:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 258 transitions, 3069 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-04 14:42:05,244 INFO L231 Difference]: Finished difference. Result has 209 places, 243 transitions, 2532 flow [2024-06-04 14:42:05,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2532, PETRI_PLACES=209, PETRI_TRANSITIONS=243} [2024-06-04 14:42:05,245 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 164 predicate places. [2024-06-04 14:42:05,245 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 243 transitions, 2532 flow [2024-06-04 14:42:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:05,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:05,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:05,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:42:05,245 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:05,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -934192725, now seen corresponding path program 1 times [2024-06-04 14:42:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505131001] [2024-06-04 14:42:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:06,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:06,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505131001] [2024-06-04 14:42:06,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505131001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:06,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:06,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:06,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484247746] [2024-06-04 14:42:06,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:06,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:06,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:06,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 243 transitions, 2532 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:06,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:06,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:06,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:07,554 INFO L124 PetriNetUnfolderBase]: 2960/4812 cut-off events. [2024-06-04 14:42:07,554 INFO L125 PetriNetUnfolderBase]: For 537362/537368 co-relation queries the response was YES. [2024-06-04 14:42:07,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41317 conditions, 4812 events. 2960/4812 cut-off events. For 537362/537368 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28957 event pairs, 784 based on Foata normal form. 7/4782 useless extension candidates. Maximal degree in co-relation 41214. Up to 4442 conditions per place. [2024-06-04 14:42:07,688 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 219 selfloop transitions, 20 changer transitions 0/262 dead transitions. [2024-06-04 14:42:07,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 262 transitions, 3115 flow [2024-06-04 14:42:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:42:07,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:42:07,689 INFO L175 Difference]: Start difference. First operand has 209 places, 243 transitions, 2532 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:42:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 262 transitions, 3115 flow [2024-06-04 14:42:08,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 262 transitions, 3014 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-04 14:42:08,005 INFO L231 Difference]: Finished difference. Result has 213 places, 246 transitions, 2543 flow [2024-06-04 14:42:08,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2543, PETRI_PLACES=213, PETRI_TRANSITIONS=246} [2024-06-04 14:42:08,006 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 168 predicate places. [2024-06-04 14:42:08,006 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 246 transitions, 2543 flow [2024-06-04 14:42:08,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:08,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:08,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:08,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:42:08,006 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:08,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -934193190, now seen corresponding path program 2 times [2024-06-04 14:42:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530915368] [2024-06-04 14:42:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530915368] [2024-06-04 14:42:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530915368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:09,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651259733] [2024-06-04 14:42:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:09,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:09,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:09,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 246 transitions, 2543 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:09,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:09,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:09,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:10,476 INFO L124 PetriNetUnfolderBase]: 3006/4875 cut-off events. [2024-06-04 14:42:10,477 INFO L125 PetriNetUnfolderBase]: For 557336/557340 co-relation queries the response was YES. [2024-06-04 14:42:10,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42429 conditions, 4875 events. 3006/4875 cut-off events. For 557336/557340 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29273 event pairs, 799 based on Foata normal form. 4/4842 useless extension candidates. Maximal degree in co-relation 42325. Up to 4300 conditions per place. [2024-06-04 14:42:10,532 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 195 selfloop transitions, 54 changer transitions 0/272 dead transitions. [2024-06-04 14:42:10,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 272 transitions, 3543 flow [2024-06-04 14:42:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:42:10,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:42:10,533 INFO L175 Difference]: Start difference. First operand has 213 places, 246 transitions, 2543 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:42:10,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 272 transitions, 3543 flow [2024-06-04 14:42:10,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 272 transitions, 3453 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:10,997 INFO L231 Difference]: Finished difference. Result has 216 places, 254 transitions, 2753 flow [2024-06-04 14:42:10,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2753, PETRI_PLACES=216, PETRI_TRANSITIONS=254} [2024-06-04 14:42:10,998 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 171 predicate places. [2024-06-04 14:42:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 254 transitions, 2753 flow [2024-06-04 14:42:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:42:10,999 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:10,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash -934206210, now seen corresponding path program 3 times [2024-06-04 14:42:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563128254] [2024-06-04 14:42:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:12,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563128254] [2024-06-04 14:42:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563128254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:12,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:12,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:12,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950447605] [2024-06-04 14:42:12,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:12,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:12,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:12,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:12,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 254 transitions, 2753 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:12,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:12,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:12,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:13,099 INFO L124 PetriNetUnfolderBase]: 3010/4881 cut-off events. [2024-06-04 14:42:13,099 INFO L125 PetriNetUnfolderBase]: For 574561/574565 co-relation queries the response was YES. [2024-06-04 14:42:13,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43413 conditions, 4881 events. 3010/4881 cut-off events. For 574561/574565 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29299 event pairs, 807 based on Foata normal form. 4/4848 useless extension candidates. Maximal degree in co-relation 43307. Up to 4349 conditions per place. [2024-06-04 14:42:13,153 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 201 selfloop transitions, 50 changer transitions 0/274 dead transitions. [2024-06-04 14:42:13,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 274 transitions, 3524 flow [2024-06-04 14:42:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:42:13,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:42:13,154 INFO L175 Difference]: Start difference. First operand has 216 places, 254 transitions, 2753 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:42:13,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 274 transitions, 3524 flow [2024-06-04 14:42:13,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 274 transitions, 3364 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-04 14:42:13,628 INFO L231 Difference]: Finished difference. Result has 220 places, 258 transitions, 2801 flow [2024-06-04 14:42:13,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2801, PETRI_PLACES=220, PETRI_TRANSITIONS=258} [2024-06-04 14:42:13,629 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-04 14:42:13,629 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 258 transitions, 2801 flow [2024-06-04 14:42:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:13,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:13,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:13,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:42:13,629 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)] === [2024-06-04 14:42:13,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -887880728, now seen corresponding path program 11 times [2024-06-04 14:42:13,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801760276] [2024-06-04 14:42:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:14,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801760276] [2024-06-04 14:42:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801760276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:14,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:14,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:14,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506903320] [2024-06-04 14:42:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:14,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:14,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:14,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 258 transitions, 2801 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:14,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:14,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:14,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:15,847 INFO L124 PetriNetUnfolderBase]: 3240/5182 cut-off events. [2024-06-04 14:42:15,847 INFO L125 PetriNetUnfolderBase]: For 623440/623444 co-relation queries the response was YES. [2024-06-04 14:42:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45317 conditions, 5182 events. 3240/5182 cut-off events. For 623440/623444 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30618 event pairs, 763 based on Foata normal form. 22/5202 useless extension candidates. Maximal degree in co-relation 45209. Up to 4386 conditions per place. [2024-06-04 14:42:15,907 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 214 selfloop transitions, 74 changer transitions 0/293 dead transitions. [2024-06-04 14:42:15,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 293 transitions, 3527 flow [2024-06-04 14:42:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:42:15,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:42:15,908 INFO L175 Difference]: Start difference. First operand has 220 places, 258 transitions, 2801 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:42:15,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 293 transitions, 3527 flow [2024-06-04 14:42:16,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 293 transitions, 3370 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:16,433 INFO L231 Difference]: Finished difference. Result has 223 places, 259 transitions, 2843 flow [2024-06-04 14:42:16,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2843, PETRI_PLACES=223, PETRI_TRANSITIONS=259} [2024-06-04 14:42:16,434 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 178 predicate places. [2024-06-04 14:42:16,434 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 259 transitions, 2843 flow [2024-06-04 14:42:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:16,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:16,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:42:16,434 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:16,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -255718056, now seen corresponding path program 12 times [2024-06-04 14:42:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834430289] [2024-06-04 14:42:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:17,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834430289] [2024-06-04 14:42:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834430289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:17,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:17,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58939356] [2024-06-04 14:42:17,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:17,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:17,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:17,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:17,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 259 transitions, 2843 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:17,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:17,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:17,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:18,644 INFO L124 PetriNetUnfolderBase]: 3315/5307 cut-off events. [2024-06-04 14:42:18,644 INFO L125 PetriNetUnfolderBase]: For 645919/645923 co-relation queries the response was YES. [2024-06-04 14:42:18,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46524 conditions, 5307 events. 3315/5307 cut-off events. For 645919/645923 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 31598 event pairs, 768 based on Foata normal form. 22/5327 useless extension candidates. Maximal degree in co-relation 46415. Up to 4511 conditions per place. [2024-06-04 14:42:18,705 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 219 selfloop transitions, 71 changer transitions 0/295 dead transitions. [2024-06-04 14:42:18,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 295 transitions, 3579 flow [2024-06-04 14:42:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:42:18,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:42:18,706 INFO L175 Difference]: Start difference. First operand has 223 places, 259 transitions, 2843 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:42:18,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 295 transitions, 3579 flow [2024-06-04 14:42:19,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 295 transitions, 3406 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:19,368 INFO L231 Difference]: Finished difference. Result has 225 places, 260 transitions, 2865 flow [2024-06-04 14:42:19,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2865, PETRI_PLACES=225, PETRI_TRANSITIONS=260} [2024-06-04 14:42:19,368 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 180 predicate places. [2024-06-04 14:42:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 260 transitions, 2865 flow [2024-06-04 14:42:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:19,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:19,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:42:19,369 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash -249461946, now seen corresponding path program 13 times [2024-06-04 14:42:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:19,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097434697] [2024-06-04 14:42:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097434697] [2024-06-04 14:42:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097434697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:20,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169097341] [2024-06-04 14:42:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:20,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:20,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 260 transitions, 2865 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:20,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:20,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:20,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:21,591 INFO L124 PetriNetUnfolderBase]: 3365/5403 cut-off events. [2024-06-04 14:42:21,591 INFO L125 PetriNetUnfolderBase]: For 657550/657554 co-relation queries the response was YES. [2024-06-04 14:42:21,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46821 conditions, 5403 events. 3365/5403 cut-off events. For 657550/657554 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32414 event pairs, 790 based on Foata normal form. 22/5423 useless extension candidates. Maximal degree in co-relation 46711. Up to 4597 conditions per place. [2024-06-04 14:42:21,650 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 221 selfloop transitions, 70 changer transitions 0/296 dead transitions. [2024-06-04 14:42:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 296 transitions, 3605 flow [2024-06-04 14:42:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-04 14:42:21,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-04 14:42:21,651 INFO L175 Difference]: Start difference. First operand has 225 places, 260 transitions, 2865 flow. Second operand 9 states and 182 transitions. [2024-06-04 14:42:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 296 transitions, 3605 flow [2024-06-04 14:42:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 296 transitions, 3436 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:22,295 INFO L231 Difference]: Finished difference. Result has 227 places, 261 transitions, 2891 flow [2024-06-04 14:42:22,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2891, PETRI_PLACES=227, PETRI_TRANSITIONS=261} [2024-06-04 14:42:22,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-04 14:42:22,295 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 261 transitions, 2891 flow [2024-06-04 14:42:22,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:22,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:22,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:42:22,296 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:22,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -255895686, now seen corresponding path program 14 times [2024-06-04 14:42:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591339881] [2024-06-04 14:42:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:22,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:23,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:23,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591339881] [2024-06-04 14:42:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591339881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:23,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:42:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64815992] [2024-06-04 14:42:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:23,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:42:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:42:23,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:42:23,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:23,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 261 transitions, 2891 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:23,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:23,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:23,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:24,502 INFO L124 PetriNetUnfolderBase]: 3337/5359 cut-off events. [2024-06-04 14:42:24,502 INFO L125 PetriNetUnfolderBase]: For 634606/634610 co-relation queries the response was YES. [2024-06-04 14:42:24,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45577 conditions, 5359 events. 3337/5359 cut-off events. For 634606/634610 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 32097 event pairs, 750 based on Foata normal form. 18/5375 useless extension candidates. Maximal degree in co-relation 45466. Up to 4203 conditions per place. [2024-06-04 14:42:24,562 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 219 selfloop transitions, 75 changer transitions 0/299 dead transitions. [2024-06-04 14:42:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 299 transitions, 3601 flow [2024-06-04 14:42:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:42:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:42:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-04 14:42:24,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:42:24,569 INFO L175 Difference]: Start difference. First operand has 227 places, 261 transitions, 2891 flow. Second operand 9 states and 183 transitions. [2024-06-04 14:42:24,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 299 transitions, 3601 flow [2024-06-04 14:42:25,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 299 transitions, 3418 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:25,190 INFO L231 Difference]: Finished difference. Result has 229 places, 261 transitions, 2864 flow [2024-06-04 14:42:25,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2864, PETRI_PLACES=229, PETRI_TRANSITIONS=261} [2024-06-04 14:42:25,190 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2024-06-04 14:42:25,190 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 261 transitions, 2864 flow [2024-06-04 14:42:25,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:25,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:25,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:25,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:42:25,191 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)] === [2024-06-04 14:42:25,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2028735005, now seen corresponding path program 3 times [2024-06-04 14:42:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440760116] [2024-06-04 14:42:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:25,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440760116] [2024-06-04 14:42:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440760116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:25,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646113345] [2024-06-04 14:42:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:25,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:25,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:26,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:26,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 261 transitions, 2864 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:26,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:26,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:26,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:26,979 INFO L124 PetriNetUnfolderBase]: 3179/5164 cut-off events. [2024-06-04 14:42:26,979 INFO L125 PetriNetUnfolderBase]: For 617042/617044 co-relation queries the response was YES. [2024-06-04 14:42:27,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44684 conditions, 5164 events. 3179/5164 cut-off events. For 617042/617044 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31536 event pairs, 848 based on Foata normal form. 1/5114 useless extension candidates. Maximal degree in co-relation 44572. Up to 4689 conditions per place. [2024-06-04 14:42:27,041 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 222 selfloop transitions, 34 changer transitions 0/279 dead transitions. [2024-06-04 14:42:27,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 279 transitions, 3475 flow [2024-06-04 14:42:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:42:27,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:42:27,042 INFO L175 Difference]: Start difference. First operand has 229 places, 261 transitions, 2864 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:42:27,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 279 transitions, 3475 flow [2024-06-04 14:42:27,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 279 transitions, 3214 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:27,666 INFO L231 Difference]: Finished difference. Result has 227 places, 264 transitions, 2744 flow [2024-06-04 14:42:27,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2744, PETRI_PLACES=227, PETRI_TRANSITIONS=264} [2024-06-04 14:42:27,667 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-04 14:42:27,667 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 264 transitions, 2744 flow [2024-06-04 14:42:27,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:27,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:27,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:42:27,667 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:27,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1134043609, now seen corresponding path program 4 times [2024-06-04 14:42:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13412376] [2024-06-04 14:42:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:28,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:28,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13412376] [2024-06-04 14:42:28,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13412376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:28,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:28,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:28,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440559595] [2024-06-04 14:42:28,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:28,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:28,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:28,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:28,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:28,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:28,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 264 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:28,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:28,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:29,479 INFO L124 PetriNetUnfolderBase]: 3184/5171 cut-off events. [2024-06-04 14:42:29,479 INFO L125 PetriNetUnfolderBase]: For 629050/629052 co-relation queries the response was YES. [2024-06-04 14:42:29,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44085 conditions, 5171 events. 3184/5171 cut-off events. For 629050/629052 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31571 event pairs, 848 based on Foata normal form. 1/5121 useless extension candidates. Maximal degree in co-relation 43973. Up to 4676 conditions per place. [2024-06-04 14:42:29,544 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 210 selfloop transitions, 47 changer transitions 0/280 dead transitions. [2024-06-04 14:42:29,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 280 transitions, 3488 flow [2024-06-04 14:42:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:42:29,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:42:29,545 INFO L175 Difference]: Start difference. First operand has 227 places, 264 transitions, 2744 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:42:29,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 280 transitions, 3488 flow [2024-06-04 14:42:30,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 280 transitions, 3384 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 14:42:30,140 INFO L231 Difference]: Finished difference. Result has 229 places, 267 transitions, 2796 flow [2024-06-04 14:42:30,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2796, PETRI_PLACES=229, PETRI_TRANSITIONS=267} [2024-06-04 14:42:30,140 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2024-06-04 14:42:30,140 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 267 transitions, 2796 flow [2024-06-04 14:42:30,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:30,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:30,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:30,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:42:30,141 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:30,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 303212186, now seen corresponding path program 1 times [2024-06-04 14:42:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:30,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569140439] [2024-06-04 14:42:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569140439] [2024-06-04 14:42:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569140439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800321622] [2024-06-04 14:42:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:31,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:31,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 267 transitions, 2796 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:31,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:31,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:31,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:32,591 INFO L124 PetriNetUnfolderBase]: 3364/5373 cut-off events. [2024-06-04 14:42:32,591 INFO L125 PetriNetUnfolderBase]: For 652010/652012 co-relation queries the response was YES. [2024-06-04 14:42:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45431 conditions, 5373 events. 3364/5373 cut-off events. For 652010/652012 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32057 event pairs, 801 based on Foata normal form. 4/5369 useless extension candidates. Maximal degree in co-relation 45318. Up to 4696 conditions per place. [2024-06-04 14:42:32,653 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 218 selfloop transitions, 83 changer transitions 0/306 dead transitions. [2024-06-04 14:42:32,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 306 transitions, 3570 flow [2024-06-04 14:42:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:42:32,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:42:32,654 INFO L175 Difference]: Start difference. First operand has 229 places, 267 transitions, 2796 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:42:32,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 306 transitions, 3570 flow [2024-06-04 14:42:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 306 transitions, 3464 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-04 14:42:33,362 INFO L231 Difference]: Finished difference. Result has 236 places, 272 transitions, 2955 flow [2024-06-04 14:42:33,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2955, PETRI_PLACES=236, PETRI_TRANSITIONS=272} [2024-06-04 14:42:33,363 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 191 predicate places. [2024-06-04 14:42:33,363 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 272 transitions, 2955 flow [2024-06-04 14:42:33,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:33,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:33,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:33,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:42:33,363 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:33,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash -80433672, now seen corresponding path program 2 times [2024-06-04 14:42:33,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:33,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416714227] [2024-06-04 14:42:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:33,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416714227] [2024-06-04 14:42:34,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416714227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:34,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:34,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435625377] [2024-06-04 14:42:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:34,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:34,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 272 transitions, 2955 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:34,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:34,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:34,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:36,132 INFO L124 PetriNetUnfolderBase]: 3392/5422 cut-off events. [2024-06-04 14:42:36,132 INFO L125 PetriNetUnfolderBase]: For 673040/673042 co-relation queries the response was YES. [2024-06-04 14:42:36,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46725 conditions, 5422 events. 3392/5422 cut-off events. For 673040/673042 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 32406 event pairs, 801 based on Foata normal form. 4/5418 useless extension candidates. Maximal degree in co-relation 46610. Up to 4730 conditions per place. [2024-06-04 14:42:36,188 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 214 selfloop transitions, 98 changer transitions 0/317 dead transitions. [2024-06-04 14:42:36,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 317 transitions, 3831 flow [2024-06-04 14:42:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:42:36,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:42:36,189 INFO L175 Difference]: Start difference. First operand has 236 places, 272 transitions, 2955 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:42:36,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 317 transitions, 3831 flow [2024-06-04 14:42:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 317 transitions, 3590 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:36,870 INFO L231 Difference]: Finished difference. Result has 240 places, 285 transitions, 3108 flow [2024-06-04 14:42:36,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3108, PETRI_PLACES=240, PETRI_TRANSITIONS=285} [2024-06-04 14:42:36,871 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-04 14:42:36,871 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 285 transitions, 3108 flow [2024-06-04 14:42:36,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:36,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:36,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:36,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:42:36,871 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)] === [2024-06-04 14:42:36,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2020366600, now seen corresponding path program 3 times [2024-06-04 14:42:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215338226] [2024-06-04 14:42:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:37,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215338226] [2024-06-04 14:42:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215338226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:37,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:37,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784158547] [2024-06-04 14:42:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:37,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:37,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:38,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:38,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 285 transitions, 3108 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:38,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:38,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:38,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:39,432 INFO L124 PetriNetUnfolderBase]: 3409/5451 cut-off events. [2024-06-04 14:42:39,432 INFO L125 PetriNetUnfolderBase]: For 692724/692726 co-relation queries the response was YES. [2024-06-04 14:42:39,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47623 conditions, 5451 events. 3409/5451 cut-off events. For 692724/692726 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32657 event pairs, 801 based on Foata normal form. 4/5448 useless extension candidates. Maximal degree in co-relation 47506. Up to 4757 conditions per place. [2024-06-04 14:42:39,494 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 221 selfloop transitions, 95 changer transitions 0/321 dead transitions. [2024-06-04 14:42:39,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 321 transitions, 3916 flow [2024-06-04 14:42:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:42:39,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:42:39,495 INFO L175 Difference]: Start difference. First operand has 240 places, 285 transitions, 3108 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:42:39,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 321 transitions, 3916 flow [2024-06-04 14:42:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 321 transitions, 3693 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-04 14:42:40,324 INFO L231 Difference]: Finished difference. Result has 246 places, 288 transitions, 3177 flow [2024-06-04 14:42:40,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3177, PETRI_PLACES=246, PETRI_TRANSITIONS=288} [2024-06-04 14:42:40,325 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-04 14:42:40,325 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 288 transitions, 3177 flow [2024-06-04 14:42:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:40,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:40,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:42:40,326 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)] === [2024-06-04 14:42:40,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash -69958152, now seen corresponding path program 4 times [2024-06-04 14:42:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986668233] [2024-06-04 14:42:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:40,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:41,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:41,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986668233] [2024-06-04 14:42:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986668233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864579498] [2024-06-04 14:42:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:41,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:41,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 288 transitions, 3177 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:41,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:41,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:41,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:42,766 INFO L124 PetriNetUnfolderBase]: 3442/5517 cut-off events. [2024-06-04 14:42:42,766 INFO L125 PetriNetUnfolderBase]: For 701146/701148 co-relation queries the response was YES. [2024-06-04 14:42:42,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47236 conditions, 5517 events. 3442/5517 cut-off events. For 701146/701148 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33244 event pairs, 633 based on Foata normal form. 4/5513 useless extension candidates. Maximal degree in co-relation 47117. Up to 4605 conditions per place. [2024-06-04 14:42:42,831 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 216 selfloop transitions, 110 changer transitions 0/331 dead transitions. [2024-06-04 14:42:42,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 331 transitions, 4359 flow [2024-06-04 14:42:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:42:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:42:42,832 INFO L175 Difference]: Start difference. First operand has 246 places, 288 transitions, 3177 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:42:42,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 331 transitions, 4359 flow [2024-06-04 14:42:43,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 331 transitions, 4104 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:43,623 INFO L231 Difference]: Finished difference. Result has 250 places, 293 transitions, 3334 flow [2024-06-04 14:42:43,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3334, PETRI_PLACES=250, PETRI_TRANSITIONS=293} [2024-06-04 14:42:43,623 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 205 predicate places. [2024-06-04 14:42:43,623 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 293 transitions, 3334 flow [2024-06-04 14:42:43,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:43,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:43,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:42:43,624 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)] === [2024-06-04 14:42:43,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -365533542, now seen corresponding path program 5 times [2024-06-04 14:42:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:43,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214956727] [2024-06-04 14:42:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:44,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214956727] [2024-06-04 14:42:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214956727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284800324] [2024-06-04 14:42:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:44,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:44,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:44,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 293 transitions, 3334 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:44,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:44,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:44,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:46,159 INFO L124 PetriNetUnfolderBase]: 3434/5505 cut-off events. [2024-06-04 14:42:46,159 INFO L125 PetriNetUnfolderBase]: For 708908/708910 co-relation queries the response was YES. [2024-06-04 14:42:46,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47259 conditions, 5505 events. 3434/5505 cut-off events. For 708908/708910 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33157 event pairs, 808 based on Foata normal form. 4/5501 useless extension candidates. Maximal degree in co-relation 47138. Up to 4804 conditions per place. [2024-06-04 14:42:46,227 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 224 selfloop transitions, 97 changer transitions 0/326 dead transitions. [2024-06-04 14:42:46,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 326 transitions, 4071 flow [2024-06-04 14:42:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:42:46,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:42:46,236 INFO L175 Difference]: Start difference. First operand has 250 places, 293 transitions, 3334 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:42:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 326 transitions, 4071 flow [2024-06-04 14:42:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 326 transitions, 3767 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:47,077 INFO L231 Difference]: Finished difference. Result has 254 places, 294 transitions, 3254 flow [2024-06-04 14:42:47,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3254, PETRI_PLACES=254, PETRI_TRANSITIONS=294} [2024-06-04 14:42:47,077 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 209 predicate places. [2024-06-04 14:42:47,077 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 294 transitions, 3254 flow [2024-06-04 14:42:47,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:47,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:47,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:42:47,078 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:47,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -462883475, now seen corresponding path program 5 times [2024-06-04 14:42:47,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:47,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145718839] [2024-06-04 14:42:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145718839] [2024-06-04 14:42:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145718839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:47,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390822381] [2024-06-04 14:42:47,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:47,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:47,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 294 transitions, 3254 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:47,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:47,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:47,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:48,962 INFO L124 PetriNetUnfolderBase]: 3276/5356 cut-off events. [2024-06-04 14:42:48,962 INFO L125 PetriNetUnfolderBase]: For 717941/717945 co-relation queries the response was YES. [2024-06-04 14:42:49,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46261 conditions, 5356 events. 3276/5356 cut-off events. For 717941/717945 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33218 event pairs, 787 based on Foata normal form. 3/5309 useless extension candidates. Maximal degree in co-relation 46138. Up to 4760 conditions per place. [2024-06-04 14:42:49,027 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 219 selfloop transitions, 66 changer transitions 0/308 dead transitions. [2024-06-04 14:42:49,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 308 transitions, 4226 flow [2024-06-04 14:42:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:42:49,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:42:49,028 INFO L175 Difference]: Start difference. First operand has 254 places, 294 transitions, 3254 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:42:49,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 308 transitions, 4226 flow [2024-06-04 14:42:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 308 transitions, 4005 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:49,707 INFO L231 Difference]: Finished difference. Result has 254 places, 297 transitions, 3227 flow [2024-06-04 14:42:49,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3227, PETRI_PLACES=254, PETRI_TRANSITIONS=297} [2024-06-04 14:42:49,707 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 209 predicate places. [2024-06-04 14:42:49,707 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 297 transitions, 3227 flow [2024-06-04 14:42:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:49,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:49,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:42:49,707 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)] === [2024-06-04 14:42:49,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash -317190833, now seen corresponding path program 6 times [2024-06-04 14:42:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859804067] [2024-06-04 14:42:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:49,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:50,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859804067] [2024-06-04 14:42:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859804067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:50,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:50,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128981617] [2024-06-04 14:42:50,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:50,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:50,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:50,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 297 transitions, 3227 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:50,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:50,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:50,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:51,594 INFO L124 PetriNetUnfolderBase]: 3268/5342 cut-off events. [2024-06-04 14:42:51,594 INFO L125 PetriNetUnfolderBase]: For 731404/731408 co-relation queries the response was YES. [2024-06-04 14:42:51,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45922 conditions, 5342 events. 3268/5342 cut-off events. For 731404/731408 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 33082 event pairs, 776 based on Foata normal form. 4/5296 useless extension candidates. Maximal degree in co-relation 45798. Up to 4752 conditions per place. [2024-06-04 14:42:51,658 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 222 selfloop transitions, 62 changer transitions 0/307 dead transitions. [2024-06-04 14:42:51,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 307 transitions, 3981 flow [2024-06-04 14:42:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:42:51,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:42:51,659 INFO L175 Difference]: Start difference. First operand has 254 places, 297 transitions, 3227 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:42:51,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 307 transitions, 3981 flow [2024-06-04 14:42:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 307 transitions, 3788 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-04 14:42:52,570 INFO L231 Difference]: Finished difference. Result has 257 places, 297 transitions, 3166 flow [2024-06-04 14:42:52,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3166, PETRI_PLACES=257, PETRI_TRANSITIONS=297} [2024-06-04 14:42:52,571 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 212 predicate places. [2024-06-04 14:42:52,571 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 297 transitions, 3166 flow [2024-06-04 14:42:52,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:52,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:52,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:52,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:42:52,571 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)] === [2024-06-04 14:42:52,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -317194398, now seen corresponding path program 4 times [2024-06-04 14:42:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:52,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991527137] [2024-06-04 14:42:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:53,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991527137] [2024-06-04 14:42:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991527137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723185232] [2024-06-04 14:42:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:53,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:53,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:53,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:53,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 297 transitions, 3166 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:53,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:53,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:53,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:54,800 INFO L124 PetriNetUnfolderBase]: 3278/5360 cut-off events. [2024-06-04 14:42:54,800 INFO L125 PetriNetUnfolderBase]: For 747716/747720 co-relation queries the response was YES. [2024-06-04 14:42:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46187 conditions, 5360 events. 3278/5360 cut-off events. For 747716/747720 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33285 event pairs, 777 based on Foata normal form. 4/5314 useless extension candidates. Maximal degree in co-relation 46062. Up to 4760 conditions per place. [2024-06-04 14:42:54,861 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 221 selfloop transitions, 68 changer transitions 0/312 dead transitions. [2024-06-04 14:42:54,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 312 transitions, 4026 flow [2024-06-04 14:42:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:42:54,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:42:54,862 INFO L175 Difference]: Start difference. First operand has 257 places, 297 transitions, 3166 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:42:54,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 312 transitions, 4026 flow [2024-06-04 14:42:55,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 312 transitions, 3875 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:55,686 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 3258 flow [2024-06-04 14:42:55,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3258, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2024-06-04 14:42:55,686 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 213 predicate places. [2024-06-04 14:42:55,686 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 3258 flow [2024-06-04 14:42:55,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:55,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:42:55,687 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)] === [2024-06-04 14:42:55,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash -317181378, now seen corresponding path program 5 times [2024-06-04 14:42:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:55,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474889236] [2024-06-04 14:42:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:56,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474889236] [2024-06-04 14:42:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474889236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:56,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:56,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:56,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032435698] [2024-06-04 14:42:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:56,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:56,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:56,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 3258 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:56,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:56,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:56,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:58,061 INFO L124 PetriNetUnfolderBase]: 3306/5404 cut-off events. [2024-06-04 14:42:58,062 INFO L125 PetriNetUnfolderBase]: For 772579/772583 co-relation queries the response was YES. [2024-06-04 14:42:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47458 conditions, 5404 events. 3306/5404 cut-off events. For 772579/772583 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33569 event pairs, 777 based on Foata normal form. 4/5358 useless extension candidates. Maximal degree in co-relation 47332. Up to 4771 conditions per place. [2024-06-04 14:42:58,128 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 226 selfloop transitions, 72 changer transitions 0/321 dead transitions. [2024-06-04 14:42:58,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 321 transitions, 4410 flow [2024-06-04 14:42:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:42:58,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:42:58,129 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 3258 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:42:58,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 321 transitions, 4410 flow [2024-06-04 14:42:58,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 321 transitions, 4195 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:58,989 INFO L231 Difference]: Finished difference. Result has 261 places, 309 transitions, 3416 flow [2024-06-04 14:42:58,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3416, PETRI_PLACES=261, PETRI_TRANSITIONS=309} [2024-06-04 14:42:58,990 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 216 predicate places. [2024-06-04 14:42:58,990 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 309 transitions, 3416 flow [2024-06-04 14:42:58,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:58,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:58,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:42:58,991 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)] === [2024-06-04 14:42:58,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash -463023285, now seen corresponding path program 2 times [2024-06-04 14:42:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:58,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853779059] [2024-06-04 14:42:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:00,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:00,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853779059] [2024-06-04 14:43:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853779059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432447540] [2024-06-04 14:43:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:00,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:00,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:00,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:00,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 309 transitions, 3416 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:00,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:00,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:00,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:01,237 INFO L124 PetriNetUnfolderBase]: 3316/5410 cut-off events. [2024-06-04 14:43:01,237 INFO L125 PetriNetUnfolderBase]: For 797085/797093 co-relation queries the response was YES. [2024-06-04 14:43:01,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48402 conditions, 5410 events. 3316/5410 cut-off events. For 797085/797093 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 33475 event pairs, 733 based on Foata normal form. 10/5371 useless extension candidates. Maximal degree in co-relation 48274. Up to 4989 conditions per place. [2024-06-04 14:43:01,303 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 277 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-06-04 14:43:01,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 324 transitions, 4143 flow [2024-06-04 14:43:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:43:01,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:43:01,304 INFO L175 Difference]: Start difference. First operand has 261 places, 309 transitions, 3416 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:43:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 324 transitions, 4143 flow [2024-06-04 14:43:02,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 324 transitions, 3951 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:02,074 INFO L231 Difference]: Finished difference. Result has 265 places, 312 transitions, 3374 flow [2024-06-04 14:43:02,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3374, PETRI_PLACES=265, PETRI_TRANSITIONS=312} [2024-06-04 14:43:02,075 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2024-06-04 14:43:02,075 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 312 transitions, 3374 flow [2024-06-04 14:43:02,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:02,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:02,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:02,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:43:02,075 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)] === [2024-06-04 14:43:02,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -301943793, now seen corresponding path program 3 times [2024-06-04 14:43:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282624061] [2024-06-04 14:43:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282624061] [2024-06-04 14:43:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282624061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100848740] [2024-06-04 14:43:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:03,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:03,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 312 transitions, 3374 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:03,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:03,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:03,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:04,722 INFO L124 PetriNetUnfolderBase]: 3321/5423 cut-off events. [2024-06-04 14:43:04,722 INFO L125 PetriNetUnfolderBase]: For 809890/809892 co-relation queries the response was YES. [2024-06-04 14:43:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48848 conditions, 5423 events. 3321/5423 cut-off events. For 809890/809892 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33575 event pairs, 745 based on Foata normal form. 1/5375 useless extension candidates. Maximal degree in co-relation 48718. Up to 5024 conditions per place. [2024-06-04 14:43:04,790 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 287 selfloop transitions, 18 changer transitions 0/328 dead transitions. [2024-06-04 14:43:04,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 328 transitions, 4114 flow [2024-06-04 14:43:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-04 14:43:04,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:43:04,792 INFO L175 Difference]: Start difference. First operand has 265 places, 312 transitions, 3374 flow. Second operand 8 states and 143 transitions. [2024-06-04 14:43:04,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 328 transitions, 4114 flow [2024-06-04 14:43:05,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 328 transitions, 3990 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:05,678 INFO L231 Difference]: Finished difference. Result has 268 places, 318 transitions, 3412 flow [2024-06-04 14:43:05,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3412, PETRI_PLACES=268, PETRI_TRANSITIONS=318} [2024-06-04 14:43:05,678 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 223 predicate places. [2024-06-04 14:43:05,678 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 318 transitions, 3412 flow [2024-06-04 14:43:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:05,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:05,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:43:05,679 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)] === [2024-06-04 14:43:05,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -991849203, now seen corresponding path program 4 times [2024-06-04 14:43:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:05,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917400035] [2024-06-04 14:43:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:05,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917400035] [2024-06-04 14:43:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917400035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:07,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:07,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:07,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699426376] [2024-06-04 14:43:07,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:07,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:07,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:07,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:07,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 318 transitions, 3412 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:07,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:07,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:07,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:08,286 INFO L124 PetriNetUnfolderBase]: 3318/5424 cut-off events. [2024-06-04 14:43:08,286 INFO L125 PetriNetUnfolderBase]: For 825527/825539 co-relation queries the response was YES. [2024-06-04 14:43:08,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49060 conditions, 5424 events. 3318/5424 cut-off events. For 825527/825539 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33630 event pairs, 731 based on Foata normal form. 13/5388 useless extension candidates. Maximal degree in co-relation 48928. Up to 4974 conditions per place. [2024-06-04 14:43:08,355 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 271 selfloop transitions, 41 changer transitions 0/335 dead transitions. [2024-06-04 14:43:08,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 335 transitions, 4179 flow [2024-06-04 14:43:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:43:08,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:43:08,356 INFO L175 Difference]: Start difference. First operand has 268 places, 318 transitions, 3412 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:43:08,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 335 transitions, 4179 flow [2024-06-04 14:43:09,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 335 transitions, 4064 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:09,508 INFO L231 Difference]: Finished difference. Result has 273 places, 324 transitions, 3525 flow [2024-06-04 14:43:09,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3525, PETRI_PLACES=273, PETRI_TRANSITIONS=324} [2024-06-04 14:43:09,509 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 228 predicate places. [2024-06-04 14:43:09,509 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 324 transitions, 3525 flow [2024-06-04 14:43:09,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:09,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:09,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:09,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:43:09,509 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)] === [2024-06-04 14:43:09,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash -302449248, now seen corresponding path program 6 times [2024-06-04 14:43:09,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:09,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028094306] [2024-06-04 14:43:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:09,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:10,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028094306] [2024-06-04 14:43:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028094306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:10,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:10,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926720432] [2024-06-04 14:43:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:10,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 324 transitions, 3525 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:10,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:10,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:11,936 INFO L124 PetriNetUnfolderBase]: 3322/5428 cut-off events. [2024-06-04 14:43:11,936 INFO L125 PetriNetUnfolderBase]: For 843582/843586 co-relation queries the response was YES. [2024-06-04 14:43:11,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49571 conditions, 5428 events. 3322/5428 cut-off events. For 843582/843586 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33716 event pairs, 772 based on Foata normal form. 4/5382 useless extension candidates. Maximal degree in co-relation 49436. Up to 4707 conditions per place. [2024-06-04 14:43:11,996 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 231 selfloop transitions, 98 changer transitions 0/352 dead transitions. [2024-06-04 14:43:11,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 352 transitions, 4999 flow [2024-06-04 14:43:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:43:11,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:43:11,997 INFO L175 Difference]: Start difference. First operand has 273 places, 324 transitions, 3525 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:43:11,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 352 transitions, 4999 flow [2024-06-04 14:43:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 352 transitions, 4880 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:12,754 INFO L231 Difference]: Finished difference. Result has 279 places, 339 transitions, 3954 flow [2024-06-04 14:43:12,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3954, PETRI_PLACES=279, PETRI_TRANSITIONS=339} [2024-06-04 14:43:12,755 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 234 predicate places. [2024-06-04 14:43:12,755 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 339 transitions, 3954 flow [2024-06-04 14:43:12,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:12,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:12,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:12,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:43:12,755 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)] === [2024-06-04 14:43:12,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1704900593, now seen corresponding path program 7 times [2024-06-04 14:43:12,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:12,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765886131] [2024-06-04 14:43:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765886131] [2024-06-04 14:43:13,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765886131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:13,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:13,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:13,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358491352] [2024-06-04 14:43:13,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:13,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:13,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:13,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 339 transitions, 3954 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:13,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:13,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:13,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:14,779 INFO L124 PetriNetUnfolderBase]: 3378/5498 cut-off events. [2024-06-04 14:43:14,779 INFO L125 PetriNetUnfolderBase]: For 860742/860746 co-relation queries the response was YES. [2024-06-04 14:43:14,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51235 conditions, 5498 events. 3378/5498 cut-off events. For 860742/860746 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33911 event pairs, 732 based on Foata normal form. 6/5455 useless extension candidates. Maximal degree in co-relation 51096. Up to 4949 conditions per place. [2024-06-04 14:43:14,844 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 307 selfloop transitions, 53 changer transitions 0/383 dead transitions. [2024-06-04 14:43:14,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 383 transitions, 5062 flow [2024-06-04 14:43:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:43:14,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:43:14,851 INFO L175 Difference]: Start difference. First operand has 279 places, 339 transitions, 3954 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:43:14,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 383 transitions, 5062 flow [2024-06-04 14:43:15,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 383 transitions, 4784 flow, removed 96 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:15,659 INFO L231 Difference]: Finished difference. Result has 287 places, 359 transitions, 4166 flow [2024-06-04 14:43:15,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4166, PETRI_PLACES=287, PETRI_TRANSITIONS=359} [2024-06-04 14:43:15,659 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 242 predicate places. [2024-06-04 14:43:15,659 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 359 transitions, 4166 flow [2024-06-04 14:43:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:15,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:15,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:15,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:43:15,660 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:15,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1775934465, now seen corresponding path program 1 times [2024-06-04 14:43:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:15,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813500846] [2024-06-04 14:43:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:16,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:16,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813500846] [2024-06-04 14:43:16,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813500846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:16,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:16,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:16,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047048001] [2024-06-04 14:43:16,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:16,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:16,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:16,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:16,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 359 transitions, 4166 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:17,832 INFO L124 PetriNetUnfolderBase]: 3448/5618 cut-off events. [2024-06-04 14:43:17,832 INFO L125 PetriNetUnfolderBase]: For 876608/876610 co-relation queries the response was YES. [2024-06-04 14:43:17,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51371 conditions, 5618 events. 3448/5618 cut-off events. For 876608/876610 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34618 event pairs, 762 based on Foata normal form. 2/5619 useless extension candidates. Maximal degree in co-relation 51227. Up to 5176 conditions per place. [2024-06-04 14:43:17,896 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 344 selfloop transitions, 18 changer transitions 0/382 dead transitions. [2024-06-04 14:43:17,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 382 transitions, 5010 flow [2024-06-04 14:43:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:17,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:17,897 INFO L175 Difference]: Start difference. First operand has 287 places, 359 transitions, 4166 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 382 transitions, 5010 flow [2024-06-04 14:43:19,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 382 transitions, 4834 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:19,083 INFO L231 Difference]: Finished difference. Result has 287 places, 362 transitions, 4098 flow [2024-06-04 14:43:19,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4098, PETRI_PLACES=287, PETRI_TRANSITIONS=362} [2024-06-04 14:43:19,083 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 242 predicate places. [2024-06-04 14:43:19,083 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 362 transitions, 4098 flow [2024-06-04 14:43:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:19,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:19,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:19,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:43:19,084 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:19,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash 262065062, now seen corresponding path program 1 times [2024-06-04 14:43:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831584457] [2024-06-04 14:43:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831584457] [2024-06-04 14:43:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831584457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236754218] [2024-06-04 14:43:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:20,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:20,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:20,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 362 transitions, 4098 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:20,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:20,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:20,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:21,417 INFO L124 PetriNetUnfolderBase]: 3458/5634 cut-off events. [2024-06-04 14:43:21,418 INFO L125 PetriNetUnfolderBase]: For 898644/898646 co-relation queries the response was YES. [2024-06-04 14:43:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51892 conditions, 5634 events. 3458/5634 cut-off events. For 898644/898646 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34724 event pairs, 761 based on Foata normal form. 3/5636 useless extension candidates. Maximal degree in co-relation 51748. Up to 5196 conditions per place. [2024-06-04 14:43:21,494 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 344 selfloop transitions, 18 changer transitions 0/382 dead transitions. [2024-06-04 14:43:21,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 382 transitions, 4934 flow [2024-06-04 14:43:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:43:21,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:43:21,496 INFO L175 Difference]: Start difference. First operand has 287 places, 362 transitions, 4098 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:43:21,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 382 transitions, 4934 flow [2024-06-04 14:43:22,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 382 transitions, 4848 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:22,718 INFO L231 Difference]: Finished difference. Result has 289 places, 365 transitions, 4120 flow [2024-06-04 14:43:22,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4012, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4120, PETRI_PLACES=289, PETRI_TRANSITIONS=365} [2024-06-04 14:43:22,719 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 244 predicate places. [2024-06-04 14:43:22,719 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 365 transitions, 4120 flow [2024-06-04 14:43:22,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:22,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:22,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:43:22,720 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 262064845, now seen corresponding path program 2 times [2024-06-04 14:43:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095208856] [2024-06-04 14:43:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095208856] [2024-06-04 14:43:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095208856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:23,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966882961] [2024-06-04 14:43:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:23,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:23,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:23,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 365 transitions, 4120 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:23,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:23,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:23,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:24,924 INFO L124 PetriNetUnfolderBase]: 3468/5650 cut-off events. [2024-06-04 14:43:24,925 INFO L125 PetriNetUnfolderBase]: For 913107/913109 co-relation queries the response was YES. [2024-06-04 14:43:24,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52420 conditions, 5650 events. 3468/5650 cut-off events. For 913107/913109 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34842 event pairs, 761 based on Foata normal form. 2/5651 useless extension candidates. Maximal degree in co-relation 52275. Up to 5195 conditions per place. [2024-06-04 14:43:24,988 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 343 selfloop transitions, 23 changer transitions 0/386 dead transitions. [2024-06-04 14:43:24,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 386 transitions, 4974 flow [2024-06-04 14:43:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:24,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:24,990 INFO L175 Difference]: Start difference. First operand has 289 places, 365 transitions, 4120 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:24,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 386 transitions, 4974 flow [2024-06-04 14:43:26,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 4888 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:26,075 INFO L231 Difference]: Finished difference. Result has 291 places, 368 transitions, 4160 flow [2024-06-04 14:43:26,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4160, PETRI_PLACES=291, PETRI_TRANSITIONS=368} [2024-06-04 14:43:26,076 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 246 predicate places. [2024-06-04 14:43:26,076 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 368 transitions, 4160 flow [2024-06-04 14:43:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:26,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:26,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:26,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:43:26,076 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:26,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2004499238, now seen corresponding path program 2 times [2024-06-04 14:43:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111941549] [2024-06-04 14:43:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:27,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111941549] [2024-06-04 14:43:27,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111941549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:27,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:27,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:27,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48603147] [2024-06-04 14:43:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:27,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:27,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:27,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:27,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:27,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 368 transitions, 4160 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:27,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:27,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:27,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:28,605 INFO L124 PetriNetUnfolderBase]: 3489/5681 cut-off events. [2024-06-04 14:43:28,606 INFO L125 PetriNetUnfolderBase]: For 941115/941117 co-relation queries the response was YES. [2024-06-04 14:43:28,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53441 conditions, 5681 events. 3489/5681 cut-off events. For 941115/941117 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 35029 event pairs, 760 based on Foata normal form. 2/5682 useless extension candidates. Maximal degree in co-relation 53295. Up to 5220 conditions per place. [2024-06-04 14:43:28,673 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 341 selfloop transitions, 31 changer transitions 0/392 dead transitions. [2024-06-04 14:43:28,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 392 transitions, 5266 flow [2024-06-04 14:43:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:43:28,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:43:28,674 INFO L175 Difference]: Start difference. First operand has 291 places, 368 transitions, 4160 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:43:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 392 transitions, 5266 flow [2024-06-04 14:43:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 392 transitions, 5162 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:29,951 INFO L231 Difference]: Finished difference. Result has 294 places, 378 transitions, 4291 flow [2024-06-04 14:43:29,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4291, PETRI_PLACES=294, PETRI_TRANSITIONS=378} [2024-06-04 14:43:29,952 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-04 14:43:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 378 transitions, 4291 flow [2024-06-04 14:43:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:29,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:43:29,953 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1146996432, now seen corresponding path program 3 times [2024-06-04 14:43:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681617686] [2024-06-04 14:43:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:31,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:31,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681617686] [2024-06-04 14:43:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681617686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:31,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658587893] [2024-06-04 14:43:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:31,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:31,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 378 transitions, 4291 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:31,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:31,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:31,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:32,378 INFO L124 PetriNetUnfolderBase]: 3488/5680 cut-off events. [2024-06-04 14:43:32,378 INFO L125 PetriNetUnfolderBase]: For 957181/957183 co-relation queries the response was YES. [2024-06-04 14:43:32,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53673 conditions, 5680 events. 3488/5680 cut-off events. For 957181/957183 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 35006 event pairs, 759 based on Foata normal form. 3/5682 useless extension candidates. Maximal degree in co-relation 53525. Up to 5230 conditions per place. [2024-06-04 14:43:32,446 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 350 selfloop transitions, 25 changer transitions 0/395 dead transitions. [2024-06-04 14:43:32,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 395 transitions, 5158 flow [2024-06-04 14:43:32,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:43:32,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:43:32,448 INFO L175 Difference]: Start difference. First operand has 294 places, 378 transitions, 4291 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:43:32,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 395 transitions, 5158 flow [2024-06-04 14:43:33,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 395 transitions, 5018 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:33,752 INFO L231 Difference]: Finished difference. Result has 297 places, 381 transitions, 4291 flow [2024-06-04 14:43:33,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4291, PETRI_PLACES=297, PETRI_TRANSITIONS=381} [2024-06-04 14:43:33,753 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 252 predicate places. [2024-06-04 14:43:33,753 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 381 transitions, 4291 flow [2024-06-04 14:43:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:33,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:33,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:33,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:43:33,754 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:33,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash 267629035, now seen corresponding path program 3 times [2024-06-04 14:43:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:33,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751446420] [2024-06-04 14:43:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:33,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751446420] [2024-06-04 14:43:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751446420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685088592] [2024-06-04 14:43:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:34,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:34,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 381 transitions, 4291 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:34,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:34,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:34,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:35,929 INFO L124 PetriNetUnfolderBase]: 3498/5696 cut-off events. [2024-06-04 14:43:35,929 INFO L125 PetriNetUnfolderBase]: For 970572/970574 co-relation queries the response was YES. [2024-06-04 14:43:35,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54155 conditions, 5696 events. 3498/5696 cut-off events. For 970572/970574 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 35127 event pairs, 759 based on Foata normal form. 2/5697 useless extension candidates. Maximal degree in co-relation 54006. Up to 5223 conditions per place. [2024-06-04 14:43:36,007 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 349 selfloop transitions, 30 changer transitions 0/399 dead transitions. [2024-06-04 14:43:36,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 399 transitions, 5169 flow [2024-06-04 14:43:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:43:36,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:36,008 INFO L175 Difference]: Start difference. First operand has 297 places, 381 transitions, 4291 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:43:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 399 transitions, 5169 flow [2024-06-04 14:43:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 399 transitions, 5059 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:37,659 INFO L231 Difference]: Finished difference. Result has 299 places, 384 transitions, 4329 flow [2024-06-04 14:43:37,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4329, PETRI_PLACES=299, PETRI_TRANSITIONS=384} [2024-06-04 14:43:37,659 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 254 predicate places. [2024-06-04 14:43:37,659 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 384 transitions, 4329 flow [2024-06-04 14:43:37,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:37,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:37,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:43:37,660 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)] === [2024-06-04 14:43:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1000861740, now seen corresponding path program 4 times [2024-06-04 14:43:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123087656] [2024-06-04 14:43:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123087656] [2024-06-04 14:43:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123087656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:38,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686087795] [2024-06-04 14:43:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:38,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:38,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:38,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:38,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 384 transitions, 4329 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:38,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:38,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:38,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:40,123 INFO L124 PetriNetUnfolderBase]: 3532/5747 cut-off events. [2024-06-04 14:43:40,123 INFO L125 PetriNetUnfolderBase]: For 1010031/1010035 co-relation queries the response was YES. [2024-06-04 14:43:40,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55574 conditions, 5747 events. 3532/5747 cut-off events. For 1010031/1010035 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 35473 event pairs, 769 based on Foata normal form. 5/5751 useless extension candidates. Maximal degree in co-relation 55424. Up to 5258 conditions per place. [2024-06-04 14:43:40,203 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 346 selfloop transitions, 37 changer transitions 0/403 dead transitions. [2024-06-04 14:43:40,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 403 transitions, 5485 flow [2024-06-04 14:43:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:43:40,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:40,204 INFO L175 Difference]: Start difference. First operand has 299 places, 384 transitions, 4329 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:43:40,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 403 transitions, 5485 flow [2024-06-04 14:43:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 403 transitions, 5359 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:41,844 INFO L231 Difference]: Finished difference. Result has 301 places, 390 transitions, 4446 flow [2024-06-04 14:43:41,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4446, PETRI_PLACES=301, PETRI_TRANSITIONS=390} [2024-06-04 14:43:41,845 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 256 predicate places. [2024-06-04 14:43:41,845 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 390 transitions, 4446 flow [2024-06-04 14:43:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:41,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:41,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:43:41,845 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)] === [2024-06-04 14:43:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1000869180, now seen corresponding path program 5 times [2024-06-04 14:43:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022155273] [2024-06-04 14:43:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:43,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022155273] [2024-06-04 14:43:43,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022155273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:43,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:43,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366243996] [2024-06-04 14:43:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:43,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:43,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:43,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:43,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 390 transitions, 4446 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:43,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:43,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:43,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:44,411 INFO L124 PetriNetUnfolderBase]: 3526/5739 cut-off events. [2024-06-04 14:43:44,411 INFO L125 PetriNetUnfolderBase]: For 1017396/1017400 co-relation queries the response was YES. [2024-06-04 14:43:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55683 conditions, 5739 events. 3526/5739 cut-off events. For 1017396/1017400 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35399 event pairs, 769 based on Foata normal form. 4/5742 useless extension candidates. Maximal degree in co-relation 55532. Up to 5275 conditions per place. [2024-06-04 14:43:44,493 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 353 selfloop transitions, 30 changer transitions 0/403 dead transitions. [2024-06-04 14:43:44,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 403 transitions, 5312 flow [2024-06-04 14:43:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:43:44,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:43:44,494 INFO L175 Difference]: Start difference. First operand has 301 places, 390 transitions, 4446 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:43:44,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 403 transitions, 5312 flow [2024-06-04 14:43:46,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 403 transitions, 5205 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:46,034 INFO L231 Difference]: Finished difference. Result has 305 places, 393 transitions, 4485 flow [2024-06-04 14:43:46,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4485, PETRI_PLACES=305, PETRI_TRANSITIONS=393} [2024-06-04 14:43:46,034 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 260 predicate places. [2024-06-04 14:43:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 393 transitions, 4485 flow [2024-06-04 14:43:46,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:46,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:46,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:43:46,035 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)] === [2024-06-04 14:43:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1000869397, now seen corresponding path program 4 times [2024-06-04 14:43:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:46,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877350399] [2024-06-04 14:43:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877350399] [2024-06-04 14:43:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877350399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:46,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:46,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:46,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791155464] [2024-06-04 14:43:46,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:46,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:47,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:47,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 393 transitions, 4485 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:47,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:47,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:47,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:48,221 INFO L124 PetriNetUnfolderBase]: 3528/5744 cut-off events. [2024-06-04 14:43:48,221 INFO L125 PetriNetUnfolderBase]: For 1029302/1029306 co-relation queries the response was YES. [2024-06-04 14:43:48,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55839 conditions, 5744 events. 3528/5744 cut-off events. For 1029302/1029306 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35508 event pairs, 773 based on Foata normal form. 2/5745 useless extension candidates. Maximal degree in co-relation 55686. Up to 5248 conditions per place. [2024-06-04 14:43:48,303 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 349 selfloop transitions, 39 changer transitions 0/408 dead transitions. [2024-06-04 14:43:48,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 408 transitions, 5379 flow [2024-06-04 14:43:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:43:48,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:43:48,304 INFO L175 Difference]: Start difference. First operand has 305 places, 393 transitions, 4485 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:43:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 408 transitions, 5379 flow [2024-06-04 14:43:49,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 408 transitions, 5263 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:49,932 INFO L231 Difference]: Finished difference. Result has 307 places, 396 transitions, 4543 flow [2024-06-04 14:43:49,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4543, PETRI_PLACES=307, PETRI_TRANSITIONS=396} [2024-06-04 14:43:49,933 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 262 predicate places. [2024-06-04 14:43:49,933 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 396 transitions, 4543 flow [2024-06-04 14:43:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:49,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:49,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:49,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:43:49,933 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)] === [2024-06-04 14:43:49,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -302264550, now seen corresponding path program 6 times [2024-06-04 14:43:49,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:49,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896279809] [2024-06-04 14:43:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:49,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:51,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896279809] [2024-06-04 14:43:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896279809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:51,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:51,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018673940] [2024-06-04 14:43:51,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:51,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:51,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:51,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:51,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 396 transitions, 4543 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:51,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:51,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:51,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:52,397 INFO L124 PetriNetUnfolderBase]: 3527/5743 cut-off events. [2024-06-04 14:43:52,397 INFO L125 PetriNetUnfolderBase]: For 1045353/1045357 co-relation queries the response was YES. [2024-06-04 14:43:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56248 conditions, 5743 events. 3527/5743 cut-off events. For 1045353/1045357 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 35507 event pairs, 769 based on Foata normal form. 5/5747 useless extension candidates. Maximal degree in co-relation 56094. Up to 5201 conditions per place. [2024-06-04 14:43:52,475 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 326 selfloop transitions, 70 changer transitions 0/416 dead transitions. [2024-06-04 14:43:52,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 416 transitions, 5761 flow [2024-06-04 14:43:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:52,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:52,476 INFO L175 Difference]: Start difference. First operand has 307 places, 396 transitions, 4543 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:52,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 416 transitions, 5761 flow [2024-06-04 14:43:54,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 416 transitions, 5609 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:54,091 INFO L231 Difference]: Finished difference. Result has 309 places, 402 transitions, 4716 flow [2024-06-04 14:43:54,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4716, PETRI_PLACES=309, PETRI_TRANSITIONS=402} [2024-06-04 14:43:54,092 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-06-04 14:43:54,092 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 402 transitions, 4716 flow [2024-06-04 14:43:54,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:54,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:54,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:54,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:43:54,093 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)] === [2024-06-04 14:43:54,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -991326357, now seen corresponding path program 1 times [2024-06-04 14:43:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988143992] [2024-06-04 14:43:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988143992] [2024-06-04 14:43:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988143992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:55,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:43:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918454226] [2024-06-04 14:43:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:43:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:43:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:43:55,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:55,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 402 transitions, 4716 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:55,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:55,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:55,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:56,949 INFO L124 PetriNetUnfolderBase]: 3483/5655 cut-off events. [2024-06-04 14:43:56,949 INFO L125 PetriNetUnfolderBase]: For 1054893/1054895 co-relation queries the response was YES. [2024-06-04 14:43:57,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56162 conditions, 5655 events. 3483/5655 cut-off events. For 1054893/1054895 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34900 event pairs, 753 based on Foata normal form. 2/5608 useless extension candidates. Maximal degree in co-relation 56007. Up to 5207 conditions per place. [2024-06-04 14:43:57,031 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 363 selfloop transitions, 19 changer transitions 0/415 dead transitions. [2024-06-04 14:43:57,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 415 transitions, 5606 flow [2024-06-04 14:43:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 14:43:57,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:43:57,034 INFO L175 Difference]: Start difference. First operand has 309 places, 402 transitions, 4716 flow. Second operand 8 states and 144 transitions. [2024-06-04 14:43:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 415 transitions, 5606 flow [2024-06-04 14:43:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 415 transitions, 5481 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:58,947 INFO L231 Difference]: Finished difference. Result has 313 places, 404 transitions, 4736 flow [2024-06-04 14:43:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4593, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4736, PETRI_PLACES=313, PETRI_TRANSITIONS=404} [2024-06-04 14:43:58,947 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-04 14:43:58,947 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 404 transitions, 4736 flow [2024-06-04 14:43:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:58,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:43:58,948 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)] === [2024-06-04 14:43:58,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash 749805109, now seen corresponding path program 1 times [2024-06-04 14:43:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905842118] [2024-06-04 14:43:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:59,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905842118] [2024-06-04 14:43:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905842118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:59,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278891447] [2024-06-04 14:43:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:59,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:59,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 404 transitions, 4736 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:59,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:01,165 INFO L124 PetriNetUnfolderBase]: 3504/5684 cut-off events. [2024-06-04 14:44:01,165 INFO L125 PetriNetUnfolderBase]: For 1080713/1080723 co-relation queries the response was YES. [2024-06-04 14:44:01,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56463 conditions, 5684 events. 3504/5684 cut-off events. For 1080713/1080723 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35034 event pairs, 585 based on Foata normal form. 14/5662 useless extension candidates. Maximal degree in co-relation 56306. Up to 5011 conditions per place. [2024-06-04 14:44:01,247 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 350 selfloop transitions, 51 changer transitions 0/434 dead transitions. [2024-06-04 14:44:01,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 434 transitions, 5735 flow [2024-06-04 14:44:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-04 14:44:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:44:01,248 INFO L175 Difference]: Start difference. First operand has 313 places, 404 transitions, 4736 flow. Second operand 8 states and 164 transitions. [2024-06-04 14:44:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 434 transitions, 5735 flow [2024-06-04 14:44:02,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 434 transitions, 5590 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:02,620 INFO L231 Difference]: Finished difference. Result has 314 places, 407 transitions, 4815 flow [2024-06-04 14:44:02,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4591, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4815, PETRI_PLACES=314, PETRI_TRANSITIONS=407} [2024-06-04 14:44:02,621 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 269 predicate places. [2024-06-04 14:44:02,621 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 407 transitions, 4815 flow [2024-06-04 14:44:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:02,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:02,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:02,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:44:02,621 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)] === [2024-06-04 14:44:02,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash 760280629, now seen corresponding path program 2 times [2024-06-04 14:44:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877930691] [2024-06-04 14:44:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:03,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877930691] [2024-06-04 14:44:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877930691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:03,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:03,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964259200] [2024-06-04 14:44:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:03,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:03,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:03,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 407 transitions, 4815 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:03,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:03,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:03,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:05,020 INFO L124 PetriNetUnfolderBase]: 3520/5718 cut-off events. [2024-06-04 14:44:05,021 INFO L125 PetriNetUnfolderBase]: For 1101962/1101972 co-relation queries the response was YES. [2024-06-04 14:44:05,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57250 conditions, 5718 events. 3520/5718 cut-off events. For 1101962/1101972 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 35441 event pairs, 737 based on Foata normal form. 14/5683 useless extension candidates. Maximal degree in co-relation 57093. Up to 5090 conditions per place. [2024-06-04 14:44:05,095 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 348 selfloop transitions, 52 changer transitions 0/433 dead transitions. [2024-06-04 14:44:05,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 433 transitions, 5806 flow [2024-06-04 14:44:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:44:05,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:44:05,096 INFO L175 Difference]: Start difference. First operand has 314 places, 407 transitions, 4815 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:44:05,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 433 transitions, 5806 flow [2024-06-04 14:44:06,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 433 transitions, 5604 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:06,850 INFO L231 Difference]: Finished difference. Result has 316 places, 410 transitions, 4845 flow [2024-06-04 14:44:06,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4613, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4845, PETRI_PLACES=316, PETRI_TRANSITIONS=410} [2024-06-04 14:44:06,851 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-04 14:44:06,851 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 410 transitions, 4845 flow [2024-06-04 14:44:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:06,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:06,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:44:06,851 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)] === [2024-06-04 14:44:06,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:06,851 INFO L85 PathProgramCache]: Analyzing trace with hash 760293525, now seen corresponding path program 1 times [2024-06-04 14:44:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218910887] [2024-06-04 14:44:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:06,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:08,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218910887] [2024-06-04 14:44:08,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218910887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:08,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:08,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199952052] [2024-06-04 14:44:08,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:08,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:08,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 410 transitions, 4845 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:08,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:08,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:08,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:09,659 INFO L124 PetriNetUnfolderBase]: 3530/5732 cut-off events. [2024-06-04 14:44:09,660 INFO L125 PetriNetUnfolderBase]: For 1113966/1113976 co-relation queries the response was YES. [2024-06-04 14:44:09,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57565 conditions, 5732 events. 3530/5732 cut-off events. For 1113966/1113976 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35483 event pairs, 736 based on Foata normal form. 12/5695 useless extension candidates. Maximal degree in co-relation 57407. Up to 5104 conditions per place. [2024-06-04 14:44:09,732 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 347 selfloop transitions, 57 changer transitions 0/437 dead transitions. [2024-06-04 14:44:09,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 437 transitions, 5844 flow [2024-06-04 14:44:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:44:09,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:44:09,733 INFO L175 Difference]: Start difference. First operand has 316 places, 410 transitions, 4845 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:44:09,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 437 transitions, 5844 flow [2024-06-04 14:44:11,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 437 transitions, 5634 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:11,644 INFO L231 Difference]: Finished difference. Result has 319 places, 414 transitions, 4880 flow [2024-06-04 14:44:11,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4880, PETRI_PLACES=319, PETRI_TRANSITIONS=414} [2024-06-04 14:44:11,645 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 274 predicate places. [2024-06-04 14:44:11,645 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 414 transitions, 4880 flow [2024-06-04 14:44:11,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:11,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:11,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:44:11,645 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)] === [2024-06-04 14:44:11,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 868134961, now seen corresponding path program 1 times [2024-06-04 14:44:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219344721] [2024-06-04 14:44:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219344721] [2024-06-04 14:44:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219344721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687575370] [2024-06-04 14:44:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:12,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:12,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 414 transitions, 4880 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:12,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:12,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:12,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:13,823 INFO L124 PetriNetUnfolderBase]: 3692/5935 cut-off events. [2024-06-04 14:44:13,824 INFO L125 PetriNetUnfolderBase]: For 1132366/1132370 co-relation queries the response was YES. [2024-06-04 14:44:13,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59027 conditions, 5935 events. 3692/5935 cut-off events. For 1132366/1132370 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 36199 event pairs, 774 based on Foata normal form. 4/5938 useless extension candidates. Maximal degree in co-relation 58868. Up to 5386 conditions per place. [2024-06-04 14:44:13,907 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 371 selfloop transitions, 64 changer transitions 0/440 dead transitions. [2024-06-04 14:44:13,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 440 transitions, 5940 flow [2024-06-04 14:44:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:44:13,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:44:13,908 INFO L175 Difference]: Start difference. First operand has 319 places, 414 transitions, 4880 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:44:13,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 440 transitions, 5940 flow [2024-06-04 14:44:16,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 440 transitions, 5723 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:16,094 INFO L231 Difference]: Finished difference. Result has 320 places, 418 transitions, 4928 flow [2024-06-04 14:44:16,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4928, PETRI_PLACES=320, PETRI_TRANSITIONS=418} [2024-06-04 14:44:16,094 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-06-04 14:44:16,094 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 418 transitions, 4928 flow [2024-06-04 14:44:16,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:16,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:16,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:16,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:44:16,095 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)] === [2024-06-04 14:44:16,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash -37340189, now seen corresponding path program 1 times [2024-06-04 14:44:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475833704] [2024-06-04 14:44:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475833704] [2024-06-04 14:44:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475833704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:17,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:17,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:17,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403581099] [2024-06-04 14:44:17,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:17,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:17,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:17,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:17,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 418 transitions, 4928 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:17,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:17,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:17,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:18,444 INFO L124 PetriNetUnfolderBase]: 3550/5756 cut-off events. [2024-06-04 14:44:18,444 INFO L125 PetriNetUnfolderBase]: For 1153426/1153430 co-relation queries the response was YES. [2024-06-04 14:44:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58871 conditions, 5756 events. 3550/5756 cut-off events. For 1153426/1153430 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35611 event pairs, 733 based on Foata normal form. 4/5711 useless extension candidates. Maximal degree in co-relation 58711. Up to 5118 conditions per place. [2024-06-04 14:44:18,526 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 345 selfloop transitions, 62 changer transitions 0/441 dead transitions. [2024-06-04 14:44:18,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 441 transitions, 5884 flow [2024-06-04 14:44:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:44:18,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:44:18,527 INFO L175 Difference]: Start difference. First operand has 320 places, 418 transitions, 4928 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:44:18,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 441 transitions, 5884 flow [2024-06-04 14:44:20,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 441 transitions, 5647 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:20,549 INFO L231 Difference]: Finished difference. Result has 322 places, 422 transitions, 4916 flow [2024-06-04 14:44:20,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4691, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4916, PETRI_PLACES=322, PETRI_TRANSITIONS=422} [2024-06-04 14:44:20,550 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-04 14:44:20,550 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 422 transitions, 4916 flow [2024-06-04 14:44:20,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:20,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:20,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:20,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:44:20,550 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)] === [2024-06-04 14:44:20,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash 868314451, now seen corresponding path program 2 times [2024-06-04 14:44:20,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524980125] [2024-06-04 14:44:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:21,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524980125] [2024-06-04 14:44:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524980125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:21,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:21,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786960168] [2024-06-04 14:44:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:21,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:21,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:21,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 422 transitions, 4916 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:21,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:21,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:21,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:22,856 INFO L124 PetriNetUnfolderBase]: 3712/5963 cut-off events. [2024-06-04 14:44:22,856 INFO L125 PetriNetUnfolderBase]: For 1178752/1178756 co-relation queries the response was YES. [2024-06-04 14:44:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60035 conditions, 5963 events. 3712/5963 cut-off events. For 1178752/1178756 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 36402 event pairs, 772 based on Foata normal form. 4/5966 useless extension candidates. Maximal degree in co-relation 59874. Up to 5378 conditions per place. [2024-06-04 14:44:22,947 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 364 selfloop transitions, 76 changer transitions 0/445 dead transitions. [2024-06-04 14:44:22,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 445 transitions, 5984 flow [2024-06-04 14:44:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:44:22,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:44:22,948 INFO L175 Difference]: Start difference. First operand has 322 places, 422 transitions, 4916 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:44:22,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 445 transitions, 5984 flow [2024-06-04 14:44:24,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 445 transitions, 5813 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:24,754 INFO L231 Difference]: Finished difference. Result has 324 places, 426 transitions, 5044 flow [2024-06-04 14:44:24,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5044, PETRI_PLACES=324, PETRI_TRANSITIONS=426} [2024-06-04 14:44:24,754 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 279 predicate places. [2024-06-04 14:44:24,754 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 426 transitions, 5044 flow [2024-06-04 14:44:24,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:24,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:24,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:44:24,755 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)] === [2024-06-04 14:44:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1104786729, now seen corresponding path program 2 times [2024-06-04 14:44:24,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:24,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895014512] [2024-06-04 14:44:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895014512] [2024-06-04 14:44:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895014512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530708366] [2024-06-04 14:44:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:25,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:25,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 426 transitions, 5044 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:25,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:25,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:25,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:27,274 INFO L124 PetriNetUnfolderBase]: 3570/5789 cut-off events. [2024-06-04 14:44:27,274 INFO L125 PetriNetUnfolderBase]: For 1202539/1202543 co-relation queries the response was YES. [2024-06-04 14:44:27,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59948 conditions, 5789 events. 3570/5789 cut-off events. For 1202539/1202543 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35863 event pairs, 748 based on Foata normal form. 4/5744 useless extension candidates. Maximal degree in co-relation 59786. Up to 5048 conditions per place. [2024-06-04 14:44:27,360 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 329 selfloop transitions, 82 changer transitions 0/446 dead transitions. [2024-06-04 14:44:27,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 446 transitions, 6214 flow [2024-06-04 14:44:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:44:27,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:44:27,361 INFO L175 Difference]: Start difference. First operand has 324 places, 426 transitions, 5044 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:44:27,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 446 transitions, 6214 flow [2024-06-04 14:44:29,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 446 transitions, 5947 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:29,296 INFO L231 Difference]: Finished difference. Result has 326 places, 430 transitions, 5045 flow [2024-06-04 14:44:29,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4777, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5045, PETRI_PLACES=326, PETRI_TRANSITIONS=430} [2024-06-04 14:44:29,296 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 281 predicate places. [2024-06-04 14:44:29,296 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 430 transitions, 5045 flow [2024-06-04 14:44:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:29,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:29,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:44:29,297 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)] === [2024-06-04 14:44:29,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1104490059, now seen corresponding path program 3 times [2024-06-04 14:44:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405604326] [2024-06-04 14:44:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405604326] [2024-06-04 14:44:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405604326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:30,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:30,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:30,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304083028] [2024-06-04 14:44:30,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:30,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:30,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:30,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 430 transitions, 5045 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:30,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:30,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:30,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:31,741 INFO L124 PetriNetUnfolderBase]: 3572/5782 cut-off events. [2024-06-04 14:44:31,741 INFO L125 PetriNetUnfolderBase]: For 1217146/1217150 co-relation queries the response was YES. [2024-06-04 14:44:31,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59954 conditions, 5782 events. 3572/5782 cut-off events. For 1217146/1217150 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35715 event pairs, 748 based on Foata normal form. 4/5737 useless extension candidates. Maximal degree in co-relation 59791. Up to 5105 conditions per place. [2024-06-04 14:44:31,822 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 347 selfloop transitions, 66 changer transitions 0/448 dead transitions. [2024-06-04 14:44:31,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 448 transitions, 5995 flow [2024-06-04 14:44:31,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:44:31,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:44:31,823 INFO L175 Difference]: Start difference. First operand has 326 places, 430 transitions, 5045 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:44:31,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 448 transitions, 5995 flow [2024-06-04 14:44:34,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 448 transitions, 5804 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-04 14:44:34,412 INFO L231 Difference]: Finished difference. Result has 329 places, 433 transitions, 5081 flow [2024-06-04 14:44:34,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4856, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5081, PETRI_PLACES=329, PETRI_TRANSITIONS=433} [2024-06-04 14:44:34,412 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 284 predicate places. [2024-06-04 14:44:34,412 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 433 transitions, 5081 flow [2024-06-04 14:44:34,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:34,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:34,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:34,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:44:34,413 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)] === [2024-06-04 14:44:34,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -29066227, now seen corresponding path program 3 times [2024-06-04 14:44:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108483709] [2024-06-04 14:44:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108483709] [2024-06-04 14:44:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108483709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112533111] [2024-06-04 14:44:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:35,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:35,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 433 transitions, 5081 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:35,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:35,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:35,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:36,801 INFO L124 PetriNetUnfolderBase]: 3750/6013 cut-off events. [2024-06-04 14:44:36,801 INFO L125 PetriNetUnfolderBase]: For 1252111/1252115 co-relation queries the response was YES. [2024-06-04 14:44:36,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61758 conditions, 6013 events. 3750/6013 cut-off events. For 1252111/1252115 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 36622 event pairs, 788 based on Foata normal form. 4/6016 useless extension candidates. Maximal degree in co-relation 61594. Up to 5348 conditions per place. [2024-06-04 14:44:36,879 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 374 selfloop transitions, 78 changer transitions 0/457 dead transitions. [2024-06-04 14:44:36,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 457 transitions, 6521 flow [2024-06-04 14:44:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:44:36,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:44:36,880 INFO L175 Difference]: Start difference. First operand has 329 places, 433 transitions, 5081 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:44:36,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 457 transitions, 6521 flow [2024-06-04 14:44:38,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 457 transitions, 6330 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:38,768 INFO L231 Difference]: Finished difference. Result has 331 places, 440 transitions, 5287 flow [2024-06-04 14:44:38,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4890, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5287, PETRI_PLACES=331, PETRI_TRANSITIONS=440} [2024-06-04 14:44:38,768 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-04 14:44:38,768 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 440 transitions, 5287 flow [2024-06-04 14:44:38,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:38,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:38,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:38,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:44:38,768 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:38,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash 651512858, now seen corresponding path program 1 times [2024-06-04 14:44:38,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:38,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948241454] [2024-06-04 14:44:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:38,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:39,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948241454] [2024-06-04 14:44:39,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948241454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:39,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:39,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:44:39,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174854053] [2024-06-04 14:44:39,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:44:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:44:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:44:39,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:39,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 440 transitions, 5287 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:39,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:39,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:39,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:41,712 INFO L124 PetriNetUnfolderBase]: 3914/6327 cut-off events. [2024-06-04 14:44:41,712 INFO L125 PetriNetUnfolderBase]: For 1316382/1316386 co-relation queries the response was YES. [2024-06-04 14:44:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63873 conditions, 6327 events. 3914/6327 cut-off events. For 1316382/1316386 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 39473 event pairs, 755 based on Foata normal form. 12/6338 useless extension candidates. Maximal degree in co-relation 63708. Up to 5019 conditions per place. [2024-06-04 14:44:41,792 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 378 selfloop transitions, 108 changer transitions 0/491 dead transitions. [2024-06-04 14:44:41,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 491 transitions, 6575 flow [2024-06-04 14:44:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:44:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:44:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-04 14:44:41,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-04 14:44:41,793 INFO L175 Difference]: Start difference. First operand has 331 places, 440 transitions, 5287 flow. Second operand 10 states and 202 transitions. [2024-06-04 14:44:41,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 491 transitions, 6575 flow [2024-06-04 14:44:43,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 491 transitions, 6373 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:43,526 INFO L231 Difference]: Finished difference. Result has 339 places, 451 transitions, 5492 flow [2024-06-04 14:44:43,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5085, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5492, PETRI_PLACES=339, PETRI_TRANSITIONS=451} [2024-06-04 14:44:43,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 294 predicate places. [2024-06-04 14:44:43,527 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 451 transitions, 5492 flow [2024-06-04 14:44:43,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:43,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:43,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:43,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:44:43,527 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)] === [2024-06-04 14:44:43,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1104366679, now seen corresponding path program 3 times [2024-06-04 14:44:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:43,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107842944] [2024-06-04 14:44:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:43,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:44,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:44,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107842944] [2024-06-04 14:44:44,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107842944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:44,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:44,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:44,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36921066] [2024-06-04 14:44:44,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:44,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:44,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:44,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 451 transitions, 5492 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:44,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:44,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:44,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:45,995 INFO L124 PetriNetUnfolderBase]: 3778/6158 cut-off events. [2024-06-04 14:44:45,995 INFO L125 PetriNetUnfolderBase]: For 1320682/1320686 co-relation queries the response was YES. [2024-06-04 14:44:46,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64299 conditions, 6158 events. 3778/6158 cut-off events. For 1320682/1320686 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 38908 event pairs, 779 based on Foata normal form. 6/6115 useless extension candidates. Maximal degree in co-relation 64130. Up to 5433 conditions per place. [2024-06-04 14:44:46,089 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 365 selfloop transitions, 68 changer transitions 0/470 dead transitions. [2024-06-04 14:44:46,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 470 transitions, 6534 flow [2024-06-04 14:44:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:44:46,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:44:46,090 INFO L175 Difference]: Start difference. First operand has 339 places, 451 transitions, 5492 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:44:46,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 470 transitions, 6534 flow [2024-06-04 14:44:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 470 transitions, 6316 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:48,449 INFO L231 Difference]: Finished difference. Result has 339 places, 454 transitions, 5554 flow [2024-06-04 14:44:48,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5274, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5554, PETRI_PLACES=339, PETRI_TRANSITIONS=454} [2024-06-04 14:44:48,449 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 294 predicate places. [2024-06-04 14:44:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 454 transitions, 5554 flow [2024-06-04 14:44:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:48,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:48,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:44:48,450 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)] === [2024-06-04 14:44:48,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1104379575, now seen corresponding path program 2 times [2024-06-04 14:44:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690169341] [2024-06-04 14:44:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:49,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690169341] [2024-06-04 14:44:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690169341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:49,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753855851] [2024-06-04 14:44:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:49,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:49,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 454 transitions, 5554 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:49,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:49,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:49,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:51,366 INFO L124 PetriNetUnfolderBase]: 3798/6186 cut-off events. [2024-06-04 14:44:51,366 INFO L125 PetriNetUnfolderBase]: For 1343440/1343444 co-relation queries the response was YES. [2024-06-04 14:44:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64673 conditions, 6186 events. 3798/6186 cut-off events. For 1343440/1343444 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 39083 event pairs, 779 based on Foata normal form. 6/6143 useless extension candidates. Maximal degree in co-relation 64506. Up to 5455 conditions per place. [2024-06-04 14:44:51,446 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 365 selfloop transitions, 73 changer transitions 0/475 dead transitions. [2024-06-04 14:44:51,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 475 transitions, 6626 flow [2024-06-04 14:44:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:44:51,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:44:51,448 INFO L175 Difference]: Start difference. First operand has 339 places, 454 transitions, 5554 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:44:51,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 475 transitions, 6626 flow [2024-06-04 14:44:53,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 475 transitions, 6368 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:53,494 INFO L231 Difference]: Finished difference. Result has 342 places, 458 transitions, 5597 flow [2024-06-04 14:44:53,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5296, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5597, PETRI_PLACES=342, PETRI_TRANSITIONS=458} [2024-06-04 14:44:53,494 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 297 predicate places. [2024-06-04 14:44:53,494 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 458 transitions, 5597 flow [2024-06-04 14:44:53,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:53,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:53,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:53,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:44:53,495 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)] === [2024-06-04 14:44:53,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1104783195, now seen corresponding path program 3 times [2024-06-04 14:44:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629682632] [2024-06-04 14:44:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:54,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:54,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629682632] [2024-06-04 14:44:54,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629682632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:54,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:54,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675873172] [2024-06-04 14:44:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:54,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:54,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:44:54,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:54,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 458 transitions, 5597 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:54,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:54,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:54,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:56,425 INFO L124 PetriNetUnfolderBase]: 3902/6338 cut-off events. [2024-06-04 14:44:56,425 INFO L125 PetriNetUnfolderBase]: For 1436035/1436039 co-relation queries the response was YES. [2024-06-04 14:44:56,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68282 conditions, 6338 events. 3902/6338 cut-off events. For 1436035/1436039 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 40125 event pairs, 776 based on Foata normal form. 6/6295 useless extension candidates. Maximal degree in co-relation 68114. Up to 5432 conditions per place. [2024-06-04 14:44:56,510 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 359 selfloop transitions, 96 changer transitions 0/492 dead transitions. [2024-06-04 14:44:56,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 492 transitions, 7535 flow [2024-06-04 14:44:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:44:56,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:44:56,511 INFO L175 Difference]: Start difference. First operand has 342 places, 458 transitions, 5597 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:44:56,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 492 transitions, 7535 flow [2024-06-04 14:44:58,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 492 transitions, 7270 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-04 14:44:58,721 INFO L231 Difference]: Finished difference. Result has 346 places, 470 transitions, 6029 flow [2024-06-04 14:44:58,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6029, PETRI_PLACES=346, PETRI_TRANSITIONS=470} [2024-06-04 14:44:58,721 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 301 predicate places. [2024-06-04 14:44:58,721 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 470 transitions, 6029 flow [2024-06-04 14:44:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:58,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:58,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:58,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:44:58,722 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)] === [2024-06-04 14:44:58,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:58,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1104797145, now seen corresponding path program 4 times [2024-06-04 14:44:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368820012] [2024-06-04 14:44:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:59,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368820012] [2024-06-04 14:44:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368820012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:59,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:44:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257169332] [2024-06-04 14:44:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:59,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:44:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:44:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:45:00,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:00,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 470 transitions, 6029 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:00,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:00,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:01,696 INFO L124 PetriNetUnfolderBase]: 3896/6331 cut-off events. [2024-06-04 14:45:01,696 INFO L125 PetriNetUnfolderBase]: For 1444909/1444913 co-relation queries the response was YES. [2024-06-04 14:45:01,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68634 conditions, 6331 events. 3896/6331 cut-off events. For 1444909/1444913 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 40101 event pairs, 775 based on Foata normal form. 6/6288 useless extension candidates. Maximal degree in co-relation 68463. Up to 5431 conditions per place. [2024-06-04 14:45:01,783 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 358 selfloop transitions, 96 changer transitions 0/491 dead transitions. [2024-06-04 14:45:01,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 491 transitions, 7527 flow [2024-06-04 14:45:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:45:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:45:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-04 14:45:01,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-04 14:45:01,784 INFO L175 Difference]: Start difference. First operand has 346 places, 470 transitions, 6029 flow. Second operand 9 states and 178 transitions. [2024-06-04 14:45:01,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 491 transitions, 7527 flow [2024-06-04 14:45:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 491 transitions, 7165 flow, removed 144 selfloop flow, removed 4 redundant places. [2024-06-04 14:45:04,008 INFO L231 Difference]: Finished difference. Result has 351 places, 470 transitions, 5867 flow [2024-06-04 14:45:04,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5867, PETRI_PLACES=351, PETRI_TRANSITIONS=470} [2024-06-04 14:45:04,008 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 306 predicate places. [2024-06-04 14:45:04,008 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 470 transitions, 5867 flow [2024-06-04 14:45:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:04,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:45:04,008 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)] === [2024-06-04 14:45:04,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1104797641, now seen corresponding path program 1 times [2024-06-04 14:45:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018054924] [2024-06-04 14:45:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018054924] [2024-06-04 14:45:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018054924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:05,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:05,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:45:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674080078] [2024-06-04 14:45:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:45:05,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:45:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:45:05,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:05,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 470 transitions, 5867 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:05,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:05,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:05,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:07,194 INFO L124 PetriNetUnfolderBase]: 3891/6330 cut-off events. [2024-06-04 14:45:07,194 INFO L125 PetriNetUnfolderBase]: For 1430429/1430437 co-relation queries the response was YES. [2024-06-04 14:45:07,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67995 conditions, 6330 events. 3891/6330 cut-off events. For 1430429/1430437 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40130 event pairs, 756 based on Foata normal form. 9/6290 useless extension candidates. Maximal degree in co-relation 67822. Up to 5792 conditions per place. [2024-06-04 14:45:07,285 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 429 selfloop transitions, 25 changer transitions 0/491 dead transitions. [2024-06-04 14:45:07,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 491 transitions, 6972 flow [2024-06-04 14:45:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:45:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:45:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 14:45:07,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:45:07,286 INFO L175 Difference]: Start difference. First operand has 351 places, 470 transitions, 5867 flow. Second operand 9 states and 164 transitions. [2024-06-04 14:45:07,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 491 transitions, 6972 flow [2024-06-04 14:45:09,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 491 transitions, 6745 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:09,955 INFO L231 Difference]: Finished difference. Result has 352 places, 473 transitions, 5840 flow [2024-06-04 14:45:09,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5840, PETRI_PLACES=352, PETRI_TRANSITIONS=473} [2024-06-04 14:45:09,955 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 307 predicate places. [2024-06-04 14:45:09,955 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 473 transitions, 5840 flow [2024-06-04 14:45:09,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:09,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:09,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:45:09,956 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)] === [2024-06-04 14:45:09,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash -707166159, now seen corresponding path program 4 times [2024-06-04 14:45:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:09,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540272724] [2024-06-04 14:45:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540272724] [2024-06-04 14:45:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540272724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088231617] [2024-06-04 14:45:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:10,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:10,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 473 transitions, 5840 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:10,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:10,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:10,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:12,466 INFO L124 PetriNetUnfolderBase]: 4048/6515 cut-off events. [2024-06-04 14:45:12,466 INFO L125 PetriNetUnfolderBase]: For 1455492/1455494 co-relation queries the response was YES. [2024-06-04 14:45:12,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68924 conditions, 6515 events. 4048/6515 cut-off events. For 1455492/1455494 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 40617 event pairs, 826 based on Foata normal form. 1/6512 useless extension candidates. Maximal degree in co-relation 68751. Up to 5943 conditions per place. [2024-06-04 14:45:12,557 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 429 selfloop transitions, 63 changer transitions 0/497 dead transitions. [2024-06-04 14:45:12,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 497 transitions, 7004 flow [2024-06-04 14:45:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:45:12,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:45:12,558 INFO L175 Difference]: Start difference. First operand has 352 places, 473 transitions, 5840 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:45:12,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 497 transitions, 7004 flow [2024-06-04 14:45:14,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 497 transitions, 6840 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:14,825 INFO L231 Difference]: Finished difference. Result has 353 places, 476 transitions, 5926 flow [2024-06-04 14:45:14,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5676, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5926, PETRI_PLACES=353, PETRI_TRANSITIONS=476} [2024-06-04 14:45:14,825 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-04 14:45:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 476 transitions, 5926 flow [2024-06-04 14:45:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:14,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:14,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:45:14,826 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)] === [2024-06-04 14:45:14,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash -479265009, now seen corresponding path program 5 times [2024-06-04 14:45:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876455792] [2024-06-04 14:45:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876455792] [2024-06-04 14:45:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876455792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:15,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:15,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:15,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5726317] [2024-06-04 14:45:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:15,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:15,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:15,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 476 transitions, 5926 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:15,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:15,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:15,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:17,424 INFO L124 PetriNetUnfolderBase]: 4053/6519 cut-off events. [2024-06-04 14:45:17,424 INFO L125 PetriNetUnfolderBase]: For 1483130/1483136 co-relation queries the response was YES. [2024-06-04 14:45:17,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69459 conditions, 6519 events. 4053/6519 cut-off events. For 1483130/1483136 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40610 event pairs, 826 based on Foata normal form. 2/6515 useless extension candidates. Maximal degree in co-relation 69285. Up to 5950 conditions per place. [2024-06-04 14:45:17,511 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 427 selfloop transitions, 67 changer transitions 0/499 dead transitions. [2024-06-04 14:45:17,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 499 transitions, 7094 flow [2024-06-04 14:45:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:45:17,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:45:17,513 INFO L175 Difference]: Start difference. First operand has 353 places, 476 transitions, 5926 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:45:17,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 499 transitions, 7094 flow [2024-06-04 14:45:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 499 transitions, 6870 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:19,958 INFO L231 Difference]: Finished difference. Result has 355 places, 479 transitions, 5966 flow [2024-06-04 14:45:19,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5966, PETRI_PLACES=355, PETRI_TRANSITIONS=479} [2024-06-04 14:45:19,959 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 310 predicate places. [2024-06-04 14:45:19,959 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 479 transitions, 5966 flow [2024-06-04 14:45:19,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:19,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:19,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:19,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:45:19,960 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)] === [2024-06-04 14:45:19,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1024646275, now seen corresponding path program 6 times [2024-06-04 14:45:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:19,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867050245] [2024-06-04 14:45:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867050245] [2024-06-04 14:45:20,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867050245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:20,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:20,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134283801] [2024-06-04 14:45:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:20,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:20,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 479 transitions, 5966 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:20,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:20,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:22,421 INFO L124 PetriNetUnfolderBase]: 4058/6526 cut-off events. [2024-06-04 14:45:22,421 INFO L125 PetriNetUnfolderBase]: For 1509246/1509252 co-relation queries the response was YES. [2024-06-04 14:45:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69870 conditions, 6526 events. 4058/6526 cut-off events. For 1509246/1509252 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40687 event pairs, 825 based on Foata normal form. 2/6522 useless extension candidates. Maximal degree in co-relation 69695. Up to 5942 conditions per place. [2024-06-04 14:45:22,531 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 415 selfloop transitions, 79 changer transitions 0/499 dead transitions. [2024-06-04 14:45:22,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 499 transitions, 7132 flow [2024-06-04 14:45:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:45:22,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:45:22,532 INFO L175 Difference]: Start difference. First operand has 355 places, 479 transitions, 5966 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:45:22,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 499 transitions, 7132 flow [2024-06-04 14:45:25,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 499 transitions, 6894 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:25,433 INFO L231 Difference]: Finished difference. Result has 357 places, 482 transitions, 6024 flow [2024-06-04 14:45:25,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5728, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6024, PETRI_PLACES=357, PETRI_TRANSITIONS=482} [2024-06-04 14:45:25,433 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-04 14:45:25,433 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 482 transitions, 6024 flow [2024-06-04 14:45:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:25,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:45:25,434 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)] === [2024-06-04 14:45:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash -441239765, now seen corresponding path program 7 times [2024-06-04 14:45:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478873553] [2024-06-04 14:45:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:26,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:26,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478873553] [2024-06-04 14:45:26,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478873553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:26,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:26,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489343518] [2024-06-04 14:45:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:26,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:26,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:26,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 482 transitions, 6024 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:26,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:26,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:26,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:27,866 INFO L124 PetriNetUnfolderBase]: 4055/6522 cut-off events. [2024-06-04 14:45:27,866 INFO L125 PetriNetUnfolderBase]: For 1526463/1526469 co-relation queries the response was YES. [2024-06-04 14:45:27,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70095 conditions, 6522 events. 4055/6522 cut-off events. For 1526463/1526469 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40630 event pairs, 825 based on Foata normal form. 2/6518 useless extension candidates. Maximal degree in co-relation 69919. Up to 5942 conditions per place. [2024-06-04 14:45:27,972 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 428 selfloop transitions, 70 changer transitions 0/503 dead transitions. [2024-06-04 14:45:27,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 503 transitions, 7204 flow [2024-06-04 14:45:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:45:27,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:45:27,973 INFO L175 Difference]: Start difference. First operand has 357 places, 482 transitions, 6024 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:45:27,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 503 transitions, 7204 flow [2024-06-04 14:45:30,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 503 transitions, 6930 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:30,964 INFO L231 Difference]: Finished difference. Result has 359 places, 485 transitions, 6028 flow [2024-06-04 14:45:30,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5750, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6028, PETRI_PLACES=359, PETRI_TRANSITIONS=485} [2024-06-04 14:45:30,965 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 314 predicate places. [2024-06-04 14:45:30,965 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 485 transitions, 6028 flow [2024-06-04 14:45:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:30,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:30,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:30,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:45:30,965 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)] === [2024-06-04 14:45:30,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1033953833, now seen corresponding path program 4 times [2024-06-04 14:45:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737480869] [2024-06-04 14:45:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737480869] [2024-06-04 14:45:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737480869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453307699] [2024-06-04 14:45:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:32,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:32,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:32,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 485 transitions, 6028 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:32,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:32,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:32,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:33,625 INFO L124 PetriNetUnfolderBase]: 3894/6321 cut-off events. [2024-06-04 14:45:33,625 INFO L125 PetriNetUnfolderBase]: For 1545345/1545351 co-relation queries the response was YES. [2024-06-04 14:45:33,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69065 conditions, 6321 events. 3894/6321 cut-off events. For 1545345/1545351 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 39901 event pairs, 778 based on Foata normal form. 2/6271 useless extension candidates. Maximal degree in co-relation 68888. Up to 5664 conditions per place. [2024-06-04 14:45:33,725 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 409 selfloop transitions, 52 changer transitions 0/502 dead transitions. [2024-06-04 14:45:33,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 502 transitions, 7004 flow [2024-06-04 14:45:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:45:33,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:45:33,726 INFO L175 Difference]: Start difference. First operand has 359 places, 485 transitions, 6028 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:45:33,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 502 transitions, 7004 flow [2024-06-04 14:45:36,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 502 transitions, 6718 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:36,568 INFO L231 Difference]: Finished difference. Result has 361 places, 485 transitions, 5852 flow [2024-06-04 14:45:36,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5742, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5852, PETRI_PLACES=361, PETRI_TRANSITIONS=485} [2024-06-04 14:45:36,568 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 316 predicate places. [2024-06-04 14:45:36,583 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 485 transitions, 5852 flow [2024-06-04 14:45:36,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:36,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:36,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:45:36,584 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)] === [2024-06-04 14:45:36,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash -694964559, now seen corresponding path program 8 times [2024-06-04 14:45:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197352113] [2024-06-04 14:45:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197352113] [2024-06-04 14:45:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197352113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:37,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:37,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533772623] [2024-06-04 14:45:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:37,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:37,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:37,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 485 transitions, 5852 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:37,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:37,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:37,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:39,145 INFO L124 PetriNetUnfolderBase]: 4059/6526 cut-off events. [2024-06-04 14:45:39,145 INFO L125 PetriNetUnfolderBase]: For 1579539/1579545 co-relation queries the response was YES. [2024-06-04 14:45:39,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70534 conditions, 6526 events. 4059/6526 cut-off events. For 1579539/1579545 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40691 event pairs, 825 based on Foata normal form. 2/6522 useless extension candidates. Maximal degree in co-relation 70356. Up to 5883 conditions per place. [2024-06-04 14:45:39,247 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 397 selfloop transitions, 104 changer transitions 0/506 dead transitions. [2024-06-04 14:45:39,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 506 transitions, 7406 flow [2024-06-04 14:45:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:45:39,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:45:39,248 INFO L175 Difference]: Start difference. First operand has 361 places, 485 transitions, 5852 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:45:39,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 506 transitions, 7406 flow [2024-06-04 14:45:42,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 506 transitions, 7215 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:42,077 INFO L231 Difference]: Finished difference. Result has 361 places, 491 transitions, 6149 flow [2024-06-04 14:45:42,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5661, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6149, PETRI_PLACES=361, PETRI_TRANSITIONS=491} [2024-06-04 14:45:42,078 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 316 predicate places. [2024-06-04 14:45:42,078 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 491 transitions, 6149 flow [2024-06-04 14:45:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:42,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:42,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:45:42,078 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)] === [2024-06-04 14:45:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash -885386843, now seen corresponding path program 5 times [2024-06-04 14:45:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628994711] [2024-06-04 14:45:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628994711] [2024-06-04 14:45:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628994711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149960956] [2024-06-04 14:45:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:43,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:43,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:43,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:43,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 491 transitions, 6149 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:44,779 INFO L124 PetriNetUnfolderBase]: 3912/6346 cut-off events. [2024-06-04 14:45:44,779 INFO L125 PetriNetUnfolderBase]: For 1606746/1606752 co-relation queries the response was YES. [2024-06-04 14:45:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70156 conditions, 6346 events. 3912/6346 cut-off events. For 1606746/1606752 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40108 event pairs, 779 based on Foata normal form. 2/6296 useless extension candidates. Maximal degree in co-relation 69977. Up to 5656 conditions per place. [2024-06-04 14:45:45,042 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 396 selfloop transitions, 69 changer transitions 0/508 dead transitions. [2024-06-04 14:45:45,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 508 transitions, 7197 flow [2024-06-04 14:45:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:45:45,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:45:45,043 INFO L175 Difference]: Start difference. First operand has 361 places, 491 transitions, 6149 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:45:45,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 508 transitions, 7197 flow [2024-06-04 14:45:48,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 508 transitions, 6929 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-04 14:45:48,233 INFO L231 Difference]: Finished difference. Result has 365 places, 494 transitions, 6107 flow [2024-06-04 14:45:48,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5881, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6107, PETRI_PLACES=365, PETRI_TRANSITIONS=494} [2024-06-04 14:45:48,233 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-04 14:45:48,234 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 494 transitions, 6107 flow [2024-06-04 14:45:48,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:48,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:48,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:45:48,234 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)] === [2024-06-04 14:45:48,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash -293204311, now seen corresponding path program 6 times [2024-06-04 14:45:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:48,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459602437] [2024-06-04 14:45:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:48,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459602437] [2024-06-04 14:45:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459602437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127716375] [2024-06-04 14:45:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:49,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:49,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 494 transitions, 6107 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:49,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:49,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:49,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:51,095 INFO L124 PetriNetUnfolderBase]: 3917/6353 cut-off events. [2024-06-04 14:45:51,096 INFO L125 PetriNetUnfolderBase]: For 1629957/1629963 co-relation queries the response was YES. [2024-06-04 14:45:51,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70474 conditions, 6353 events. 3917/6353 cut-off events. For 1629957/1629963 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40161 event pairs, 777 based on Foata normal form. 2/6303 useless extension candidates. Maximal degree in co-relation 70293. Up to 5640 conditions per place. [2024-06-04 14:45:51,187 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 388 selfloop transitions, 81 changer transitions 0/512 dead transitions. [2024-06-04 14:45:51,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 512 transitions, 7182 flow [2024-06-04 14:45:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:45:51,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:45:51,188 INFO L175 Difference]: Start difference. First operand has 365 places, 494 transitions, 6107 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:45:51,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 512 transitions, 7182 flow [2024-06-04 14:45:54,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 512 transitions, 6994 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:54,315 INFO L231 Difference]: Finished difference. Result has 368 places, 498 transitions, 6209 flow [2024-06-04 14:45:54,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6209, PETRI_PLACES=368, PETRI_TRANSITIONS=498} [2024-06-04 14:45:54,316 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 323 predicate places. [2024-06-04 14:45:54,316 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 498 transitions, 6209 flow [2024-06-04 14:45:54,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:54,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:54,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:45:54,316 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)] === [2024-06-04 14:45:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash -427193045, now seen corresponding path program 9 times [2024-06-04 14:45:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940812268] [2024-06-04 14:45:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:55,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940812268] [2024-06-04 14:45:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940812268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387856765] [2024-06-04 14:45:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:55,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:55,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:55,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:55,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 498 transitions, 6209 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:56,951 INFO L124 PetriNetUnfolderBase]: 4066/6536 cut-off events. [2024-06-04 14:45:56,951 INFO L125 PetriNetUnfolderBase]: For 1649948/1649954 co-relation queries the response was YES. [2024-06-04 14:45:57,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71528 conditions, 6536 events. 4066/6536 cut-off events. For 1649948/1649954 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40744 event pairs, 824 based on Foata normal form. 2/6532 useless extension candidates. Maximal degree in co-relation 71345. Up to 5894 conditions per place. [2024-06-04 14:45:57,045 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 400 selfloop transitions, 107 changer transitions 0/512 dead transitions. [2024-06-04 14:45:57,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 512 transitions, 7265 flow [2024-06-04 14:45:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:45:57,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:45:57,046 INFO L175 Difference]: Start difference. First operand has 368 places, 498 transitions, 6209 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:45:57,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 512 transitions, 7265 flow [2024-06-04 14:45:59,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 512 transitions, 6960 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-04 14:45:59,750 INFO L231 Difference]: Finished difference. Result has 371 places, 498 transitions, 6124 flow [2024-06-04 14:45:59,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5904, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6124, PETRI_PLACES=371, PETRI_TRANSITIONS=498} [2024-06-04 14:45:59,750 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-04 14:45:59,750 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 498 transitions, 6124 flow [2024-06-04 14:45:59,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:59,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:59,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:45:59,750 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:59,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -130491484, now seen corresponding path program 2 times [2024-06-04 14:45:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764323056] [2024-06-04 14:45:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764323056] [2024-06-04 14:46:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764323056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:00,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:00,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:46:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084634111] [2024-06-04 14:46:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:00,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:46:00,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:46:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:46:00,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:00,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 498 transitions, 6124 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:00,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:00,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:02,866 INFO L124 PetriNetUnfolderBase]: 4189/6795 cut-off events. [2024-06-04 14:46:02,866 INFO L125 PetriNetUnfolderBase]: For 1724305/1724313 co-relation queries the response was YES. [2024-06-04 14:46:02,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72872 conditions, 6795 events. 4189/6795 cut-off events. For 1724305/1724313 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 43216 event pairs, 860 based on Foata normal form. 15/6808 useless extension candidates. Maximal degree in co-relation 72688. Up to 5658 conditions per place. [2024-06-04 14:46:02,968 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 435 selfloop transitions, 104 changer transitions 0/544 dead transitions. [2024-06-04 14:46:02,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 544 transitions, 7494 flow [2024-06-04 14:46:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:46:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:46:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:46:02,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:46:02,969 INFO L175 Difference]: Start difference. First operand has 371 places, 498 transitions, 6124 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:46:02,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 544 transitions, 7494 flow [2024-06-04 14:46:06,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 544 transitions, 7262 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:46:07,002 INFO L231 Difference]: Finished difference. Result has 376 places, 506 transitions, 6246 flow [2024-06-04 14:46:07,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6246, PETRI_PLACES=376, PETRI_TRANSITIONS=506} [2024-06-04 14:46:07,003 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 331 predicate places. [2024-06-04 14:46:07,003 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 506 transitions, 6246 flow [2024-06-04 14:46:07,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:07,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:07,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:07,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:46:07,003 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:07,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1185003332, now seen corresponding path program 3 times [2024-06-04 14:46:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:07,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244913757] [2024-06-04 14:46:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:07,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:08,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244913757] [2024-06-04 14:46:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244913757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:08,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:46:08,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119465004] [2024-06-04 14:46:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:46:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:46:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:46:08,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:08,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 506 transitions, 6246 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:08,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:08,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:08,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:10,363 INFO L124 PetriNetUnfolderBase]: 4299/6995 cut-off events. [2024-06-04 14:46:10,364 INFO L125 PetriNetUnfolderBase]: For 1758381/1758389 co-relation queries the response was YES. [2024-06-04 14:46:10,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74789 conditions, 6995 events. 4299/6995 cut-off events. For 1758381/1758389 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44990 event pairs, 885 based on Foata normal form. 15/7008 useless extension candidates. Maximal degree in co-relation 74602. Up to 5931 conditions per place. [2024-06-04 14:46:10,474 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 429 selfloop transitions, 117 changer transitions 0/551 dead transitions. [2024-06-04 14:46:10,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 551 transitions, 7632 flow [2024-06-04 14:46:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:46:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:46:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:46:10,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:46:10,476 INFO L175 Difference]: Start difference. First operand has 376 places, 506 transitions, 6246 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:46:10,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 551 transitions, 7632 flow [2024-06-04 14:46:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 551 transitions, 7408 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-04 14:46:14,222 INFO L231 Difference]: Finished difference. Result has 383 places, 514 transitions, 6429 flow [2024-06-04 14:46:14,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6429, PETRI_PLACES=383, PETRI_TRANSITIONS=514} [2024-06-04 14:46:14,223 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-04 14:46:14,223 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 514 transitions, 6429 flow [2024-06-04 14:46:14,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:14,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:14,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:14,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:46:14,223 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:14,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1173961442, now seen corresponding path program 4 times [2024-06-04 14:46:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:14,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721828421] [2024-06-04 14:46:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721828421] [2024-06-04 14:46:15,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721828421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:15,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:15,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:46:15,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680666546] [2024-06-04 14:46:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:15,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:46:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:46:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:46:15,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:15,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 514 transitions, 6429 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:15,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:15,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:15,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:17,409 INFO L124 PetriNetUnfolderBase]: 4320/7044 cut-off events. [2024-06-04 14:46:17,409 INFO L125 PetriNetUnfolderBase]: For 1730128/1730136 co-relation queries the response was YES. [2024-06-04 14:46:17,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74355 conditions, 7044 events. 4320/7044 cut-off events. For 1730128/1730136 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 45529 event pairs, 751 based on Foata normal form. 15/7057 useless extension candidates. Maximal degree in co-relation 74165. Up to 4901 conditions per place. [2024-06-04 14:46:17,529 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 416 selfloop transitions, 133 changer transitions 0/554 dead transitions. [2024-06-04 14:46:17,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 554 transitions, 7972 flow [2024-06-04 14:46:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:46:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:46:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 14:46:17,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 14:46:17,531 INFO L175 Difference]: Start difference. First operand has 383 places, 514 transitions, 6429 flow. Second operand 10 states and 198 transitions. [2024-06-04 14:46:17,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 554 transitions, 7972 flow [2024-06-04 14:46:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 554 transitions, 7781 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-04 14:46:20,698 INFO L231 Difference]: Finished difference. Result has 390 places, 515 transitions, 6568 flow [2024-06-04 14:46:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6568, PETRI_PLACES=390, PETRI_TRANSITIONS=515} [2024-06-04 14:46:20,699 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-04 14:46:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 515 transitions, 6568 flow [2024-06-04 14:46:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:20,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:46:20,699 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:46:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1777625374, now seen corresponding path program 5 times [2024-06-04 14:46:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099999227] [2024-06-04 14:46:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099999227] [2024-06-04 14:46:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099999227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:21,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:21,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:46:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692176400] [2024-06-04 14:46:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:21,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:46:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:46:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:46:21,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:21,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 515 transitions, 6568 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:21,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:21,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:21,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:23,876 INFO L124 PetriNetUnfolderBase]: 4300/7012 cut-off events. [2024-06-04 14:46:23,877 INFO L125 PetriNetUnfolderBase]: For 1696511/1696519 co-relation queries the response was YES. [2024-06-04 14:46:23,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72835 conditions, 7012 events. 4300/7012 cut-off events. For 1696511/1696519 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 45300 event pairs, 872 based on Foata normal form. 15/7025 useless extension candidates. Maximal degree in co-relation 72643. Up to 5938 conditions per place. [2024-06-04 14:46:23,991 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 434 selfloop transitions, 112 changer transitions 0/551 dead transitions. [2024-06-04 14:46:23,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 551 transitions, 7714 flow [2024-06-04 14:46:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:46:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:46:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:46:23,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:46:23,993 INFO L175 Difference]: Start difference. First operand has 390 places, 515 transitions, 6568 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:46:23,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 551 transitions, 7714 flow [2024-06-04 14:46:27,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 551 transitions, 7356 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:46:27,952 INFO L231 Difference]: Finished difference. Result has 391 places, 514 transitions, 6320 flow [2024-06-04 14:46:27,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6092, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6320, PETRI_PLACES=391, PETRI_TRANSITIONS=514} [2024-06-04 14:46:27,953 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 346 predicate places. [2024-06-04 14:46:27,953 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 514 transitions, 6320 flow [2024-06-04 14:46:27,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:27,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:27,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:27,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:46:27,953 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)] === [2024-06-04 14:46:27,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1065373499, now seen corresponding path program 7 times [2024-06-04 14:46:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:27,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776671893] [2024-06-04 14:46:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:29,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776671893] [2024-06-04 14:46:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776671893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:29,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784593495] [2024-06-04 14:46:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:29,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:29,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:29,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 514 transitions, 6320 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:29,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:29,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:29,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:30,836 INFO L124 PetriNetUnfolderBase]: 4171/6851 cut-off events. [2024-06-04 14:46:30,836 INFO L125 PetriNetUnfolderBase]: For 1684250/1684258 co-relation queries the response was YES. [2024-06-04 14:46:30,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71684 conditions, 6851 events. 4171/6851 cut-off events. For 1684250/1684258 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 44842 event pairs, 852 based on Foata normal form. 4/6805 useless extension candidates. Maximal degree in co-relation 71492. Up to 6004 conditions per place. [2024-06-04 14:46:30,951 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 396 selfloop transitions, 94 changer transitions 0/533 dead transitions. [2024-06-04 14:46:30,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 533 transitions, 7783 flow [2024-06-04 14:46:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:46:30,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:46:30,952 INFO L175 Difference]: Start difference. First operand has 391 places, 514 transitions, 6320 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:46:30,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 533 transitions, 7783 flow [2024-06-04 14:46:34,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 533 transitions, 7293 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-04 14:46:34,178 INFO L231 Difference]: Finished difference. Result has 388 places, 522 transitions, 6254 flow [2024-06-04 14:46:34,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5830, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6254, PETRI_PLACES=388, PETRI_TRANSITIONS=522} [2024-06-04 14:46:34,178 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 343 predicate places. [2024-06-04 14:46:34,179 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 522 transitions, 6254 flow [2024-06-04 14:46:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:34,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:34,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:34,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:46:34,179 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)] === [2024-06-04 14:46:34,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1065848977, now seen corresponding path program 10 times [2024-06-04 14:46:34,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:34,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308322811] [2024-06-04 14:46:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:35,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:35,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308322811] [2024-06-04 14:46:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308322811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900716318] [2024-06-04 14:46:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:35,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:35,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 522 transitions, 6254 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:35,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:35,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:35,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:36,797 INFO L124 PetriNetUnfolderBase]: 4342/7074 cut-off events. [2024-06-04 14:46:36,797 INFO L125 PetriNetUnfolderBase]: For 1726623/1726631 co-relation queries the response was YES. [2024-06-04 14:46:36,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72509 conditions, 7074 events. 4342/7074 cut-off events. For 1726623/1726631 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 45789 event pairs, 917 based on Foata normal form. 4/7076 useless extension candidates. Maximal degree in co-relation 72319. Up to 6220 conditions per place. [2024-06-04 14:46:36,913 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 421 selfloop transitions, 122 changer transitions 0/548 dead transitions. [2024-06-04 14:46:36,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 548 transitions, 8704 flow [2024-06-04 14:46:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:46:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:46:36,915 INFO L175 Difference]: Start difference. First operand has 388 places, 522 transitions, 6254 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:46:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 548 transitions, 8704 flow [2024-06-04 14:46:40,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 548 transitions, 8463 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-04 14:46:40,524 INFO L231 Difference]: Finished difference. Result has 391 places, 535 transitions, 6829 flow [2024-06-04 14:46:40,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6013, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6829, PETRI_PLACES=391, PETRI_TRANSITIONS=535} [2024-06-04 14:46:40,524 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 346 predicate places. [2024-06-04 14:46:40,524 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 535 transitions, 6829 flow [2024-06-04 14:46:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:40,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:40,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:46:40,525 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)] === [2024-06-04 14:46:40,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash -914395415, now seen corresponding path program 8 times [2024-06-04 14:46:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593284508] [2024-06-04 14:46:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:41,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593284508] [2024-06-04 14:46:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593284508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:41,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:41,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64532538] [2024-06-04 14:46:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:41,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:41,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:41,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 535 transitions, 6829 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:41,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:41,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:41,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:43,397 INFO L124 PetriNetUnfolderBase]: 4194/6885 cut-off events. [2024-06-04 14:46:43,397 INFO L125 PetriNetUnfolderBase]: For 1752797/1752805 co-relation queries the response was YES. [2024-06-04 14:46:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72123 conditions, 6885 events. 4194/6885 cut-off events. For 1752797/1752805 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 45050 event pairs, 852 based on Foata normal form. 5/6840 useless extension candidates. Maximal degree in co-relation 71932. Up to 6044 conditions per place. [2024-06-04 14:46:43,508 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 420 selfloop transitions, 81 changer transitions 0/548 dead transitions. [2024-06-04 14:46:43,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 548 transitions, 7943 flow [2024-06-04 14:46:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:46:43,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:46:43,510 INFO L175 Difference]: Start difference. First operand has 391 places, 535 transitions, 6829 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:46:43,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 548 transitions, 7943 flow [2024-06-04 14:46:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 548 transitions, 7686 flow, removed 107 selfloop flow, removed 2 redundant places. [2024-06-04 14:46:47,183 INFO L231 Difference]: Finished difference. Result has 397 places, 538 transitions, 6833 flow [2024-06-04 14:46:47,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6572, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6833, PETRI_PLACES=397, PETRI_TRANSITIONS=538} [2024-06-04 14:46:47,184 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 352 predicate places. [2024-06-04 14:46:47,184 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 538 transitions, 6833 flow [2024-06-04 14:46:47,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:47,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:47,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:46:47,184 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)] === [2024-06-04 14:46:47,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:47,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2136440143, now seen corresponding path program 11 times [2024-06-04 14:46:47,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:47,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464963909] [2024-06-04 14:46:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:47,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:48,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:48,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464963909] [2024-06-04 14:46:48,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464963909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:48,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:48,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465832310] [2024-06-04 14:46:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:48,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:48,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:48,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 538 transitions, 6833 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:48,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:48,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:48,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:49,887 INFO L124 PetriNetUnfolderBase]: 4338/7069 cut-off events. [2024-06-04 14:46:49,887 INFO L125 PetriNetUnfolderBase]: For 1751723/1751731 co-relation queries the response was YES. [2024-06-04 14:46:49,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72156 conditions, 7069 events. 4338/7069 cut-off events. For 1751723/1751731 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 45756 event pairs, 919 based on Foata normal form. 5/7072 useless extension candidates. Maximal degree in co-relation 71963. Up to 6218 conditions per place. [2024-06-04 14:46:50,004 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 428 selfloop transitions, 117 changer transitions 0/550 dead transitions. [2024-06-04 14:46:50,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 550 transitions, 8477 flow [2024-06-04 14:46:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:46:50,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:46:50,005 INFO L175 Difference]: Start difference. First operand has 397 places, 538 transitions, 6833 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:46:50,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 550 transitions, 8477 flow [2024-06-04 14:46:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 550 transitions, 8148 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:53,586 INFO L231 Difference]: Finished difference. Result has 399 places, 538 transitions, 6745 flow [2024-06-04 14:46:53,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6745, PETRI_PLACES=399, PETRI_TRANSITIONS=538} [2024-06-04 14:46:53,586 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 354 predicate places. [2024-06-04 14:46:53,586 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 538 transitions, 6745 flow [2024-06-04 14:46:53,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:53,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:53,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:46:53,587 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)] === [2024-06-04 14:46:53,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1468829815, now seen corresponding path program 9 times [2024-06-04 14:46:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:53,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791992000] [2024-06-04 14:46:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:53,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:54,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791992000] [2024-06-04 14:46:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791992000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:54,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:54,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920138025] [2024-06-04 14:46:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:54,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:54,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 538 transitions, 6745 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:54,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:54,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:54,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:56,400 INFO L124 PetriNetUnfolderBase]: 4182/6867 cut-off events. [2024-06-04 14:46:56,400 INFO L125 PetriNetUnfolderBase]: For 1756034/1756042 co-relation queries the response was YES. [2024-06-04 14:46:56,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70864 conditions, 6867 events. 4182/6867 cut-off events. For 1756034/1756042 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44912 event pairs, 852 based on Foata normal form. 5/6822 useless extension candidates. Maximal degree in co-relation 70670. Up to 5993 conditions per place. [2024-06-04 14:46:56,517 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 407 selfloop transitions, 95 changer transitions 0/549 dead transitions. [2024-06-04 14:46:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 549 transitions, 8041 flow [2024-06-04 14:46:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:46:56,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:46:56,518 INFO L175 Difference]: Start difference. First operand has 399 places, 538 transitions, 6745 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:46:56,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 549 transitions, 8041 flow [2024-06-04 14:47:01,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 549 transitions, 7683 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:47:01,214 INFO L231 Difference]: Finished difference. Result has 399 places, 538 transitions, 6586 flow [2024-06-04 14:47:01,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6586, PETRI_PLACES=399, PETRI_TRANSITIONS=538} [2024-06-04 14:47:01,215 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 354 predicate places. [2024-06-04 14:47:01,215 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 538 transitions, 6586 flow [2024-06-04 14:47:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:01,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:01,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:01,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:47:01,215 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)] === [2024-06-04 14:47:01,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -780273629, now seen corresponding path program 10 times [2024-06-04 14:47:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:01,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33057148] [2024-06-04 14:47:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33057148] [2024-06-04 14:47:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33057148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050340161] [2024-06-04 14:47:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:02,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:02,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:02,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 538 transitions, 6586 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:02,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:02,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:02,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:04,380 INFO L124 PetriNetUnfolderBase]: 4187/6876 cut-off events. [2024-06-04 14:47:04,380 INFO L125 PetriNetUnfolderBase]: For 1770219/1770227 co-relation queries the response was YES. [2024-06-04 14:47:04,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70804 conditions, 6876 events. 4187/6876 cut-off events. For 1770219/1770227 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44981 event pairs, 852 based on Foata normal form. 4/6830 useless extension candidates. Maximal degree in co-relation 70611. Up to 5895 conditions per place. [2024-06-04 14:47:04,494 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 362 selfloop transitions, 144 changer transitions 0/553 dead transitions. [2024-06-04 14:47:04,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 553 transitions, 8248 flow [2024-06-04 14:47:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:47:04,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:47:04,495 INFO L175 Difference]: Start difference. First operand has 399 places, 538 transitions, 6586 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:47:04,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 553 transitions, 8248 flow [2024-06-04 14:47:08,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 553 transitions, 8014 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 14:47:08,326 INFO L231 Difference]: Finished difference. Result has 402 places, 541 transitions, 6734 flow [2024-06-04 14:47:08,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6734, PETRI_PLACES=402, PETRI_TRANSITIONS=541} [2024-06-04 14:47:08,326 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 357 predicate places. [2024-06-04 14:47:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 541 transitions, 6734 flow [2024-06-04 14:47:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:08,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:08,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:08,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:47:08,326 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)] === [2024-06-04 14:47:08,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -785987549, now seen corresponding path program 11 times [2024-06-04 14:47:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716915700] [2024-06-04 14:47:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:09,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716915700] [2024-06-04 14:47:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716915700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:09,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:09,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:09,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868992092] [2024-06-04 14:47:09,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:09,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:09,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:09,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 541 transitions, 6734 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:09,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:09,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:09,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:11,301 INFO L124 PetriNetUnfolderBase]: 4179/6862 cut-off events. [2024-06-04 14:47:11,302 INFO L125 PetriNetUnfolderBase]: For 1788965/1788973 co-relation queries the response was YES. [2024-06-04 14:47:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70682 conditions, 6862 events. 4179/6862 cut-off events. For 1788965/1788973 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 44864 event pairs, 854 based on Foata normal form. 5/6817 useless extension candidates. Maximal degree in co-relation 70488. Up to 5887 conditions per place. [2024-06-04 14:47:11,405 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 369 selfloop transitions, 136 changer transitions 0/552 dead transitions. [2024-06-04 14:47:11,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 552 transitions, 8040 flow [2024-06-04 14:47:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:47:11,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:47:11,406 INFO L175 Difference]: Start difference. First operand has 402 places, 541 transitions, 6734 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:47:11,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 552 transitions, 8040 flow [2024-06-04 14:47:15,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 552 transitions, 7558 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-04 14:47:15,026 INFO L231 Difference]: Finished difference. Result has 402 places, 541 transitions, 6532 flow [2024-06-04 14:47:15,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6532, PETRI_PLACES=402, PETRI_TRANSITIONS=541} [2024-06-04 14:47:15,027 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 357 predicate places. [2024-06-04 14:47:15,027 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 541 transitions, 6532 flow [2024-06-04 14:47:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:15,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:15,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:15,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:47:15,027 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)] === [2024-06-04 14:47:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1464478593, now seen corresponding path program 12 times [2024-06-04 14:47:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428884528] [2024-06-04 14:47:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428884528] [2024-06-04 14:47:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428884528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:15,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:15,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247919704] [2024-06-04 14:47:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:16,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:47:16,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 541 transitions, 6532 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:16,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:16,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:47:16,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:17,737 INFO L124 PetriNetUnfolderBase]: 4326/7052 cut-off events. [2024-06-04 14:47:17,737 INFO L125 PetriNetUnfolderBase]: For 1796911/1796919 co-relation queries the response was YES. [2024-06-04 14:47:17,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71343 conditions, 7052 events. 4326/7052 cut-off events. For 1796911/1796919 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 45655 event pairs, 919 based on Foata normal form. 4/7054 useless extension candidates. Maximal degree in co-relation 71151. Up to 6204 conditions per place. [2024-06-04 14:47:17,844 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 423 selfloop transitions, 124 changer transitions 0/552 dead transitions. [2024-06-04 14:47:17,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 552 transitions, 7924 flow [2024-06-04 14:47:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:17,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:47:17,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:47:17,845 INFO L175 Difference]: Start difference. First operand has 402 places, 541 transitions, 6532 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:47:17,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 552 transitions, 7924 flow [2024-06-04 14:47:21,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 552 transitions, 7536 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-04 14:47:21,902 INFO L231 Difference]: Finished difference. Result has 403 places, 541 transitions, 6398 flow [2024-06-04 14:47:21,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6144, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6398, PETRI_PLACES=403, PETRI_TRANSITIONS=541} [2024-06-04 14:47:21,902 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-04 14:47:21,903 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 541 transitions, 6398 flow [2024-06-04 14:47:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:21,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:21,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:21,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:47:21,903 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)] === [2024-06-04 14:47:21,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash -962425269, now seen corresponding path program 12 times [2024-06-04 14:47:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253515399] [2024-06-04 14:47:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:23,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:23,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253515399] [2024-06-04 14:47:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253515399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:23,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036013564] [2024-06-04 14:47:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:23,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:23,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 541 transitions, 6398 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:23,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:24,694 INFO L124 PetriNetUnfolderBase]: 4167/6844 cut-off events. [2024-06-04 14:47:24,694 INFO L125 PetriNetUnfolderBase]: For 1810629/1810637 co-relation queries the response was YES. [2024-06-04 14:47:24,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70168 conditions, 6844 events. 4167/6844 cut-off events. For 1810629/1810637 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 44773 event pairs, 850 based on Foata normal form. 4/6798 useless extension candidates. Maximal degree in co-relation 69975. Up to 6019 conditions per place. [2024-06-04 14:47:24,799 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 420 selfloop transitions, 84 changer transitions 0/551 dead transitions. [2024-06-04 14:47:24,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 551 transitions, 7432 flow [2024-06-04 14:47:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:47:24,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:47:24,800 INFO L175 Difference]: Start difference. First operand has 403 places, 541 transitions, 6398 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:47:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 551 transitions, 7432 flow [2024-06-04 14:47:28,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 551 transitions, 7094 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-04 14:47:28,694 INFO L231 Difference]: Finished difference. Result has 403 places, 541 transitions, 6234 flow [2024-06-04 14:47:28,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6234, PETRI_PLACES=403, PETRI_TRANSITIONS=541} [2024-06-04 14:47:28,694 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-04 14:47:28,694 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 541 transitions, 6234 flow [2024-06-04 14:47:28,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:28,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:28,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:47:28,695 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)] === [2024-06-04 14:47:28,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1469249865, now seen corresponding path program 4 times [2024-06-04 14:47:28,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:28,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802639210] [2024-06-04 14:47:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:29,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802639210] [2024-06-04 14:47:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802639210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:29,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444836844] [2024-06-04 14:47:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:29,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:29,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 541 transitions, 6234 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:29,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:29,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:31,421 INFO L124 PetriNetUnfolderBase]: 4172/6855 cut-off events. [2024-06-04 14:47:31,422 INFO L125 PetriNetUnfolderBase]: For 1841748/1841756 co-relation queries the response was YES. [2024-06-04 14:47:31,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69971 conditions, 6855 events. 4172/6855 cut-off events. For 1841748/1841756 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44899 event pairs, 851 based on Foata normal form. 7/6812 useless extension candidates. Maximal degree in co-relation 69778. Up to 6015 conditions per place. [2024-06-04 14:47:31,533 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 426 selfloop transitions, 82 changer transitions 0/555 dead transitions. [2024-06-04 14:47:31,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 555 transitions, 7430 flow [2024-06-04 14:47:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:47:31,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:47:31,534 INFO L175 Difference]: Start difference. First operand has 403 places, 541 transitions, 6234 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:47:31,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 555 transitions, 7430 flow [2024-06-04 14:47:35,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 555 transitions, 7212 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:47:35,229 INFO L231 Difference]: Finished difference. Result has 403 places, 544 transitions, 6344 flow [2024-06-04 14:47:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6016, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6344, PETRI_PLACES=403, PETRI_TRANSITIONS=544} [2024-06-04 14:47:35,230 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-04 14:47:35,230 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 544 transitions, 6344 flow [2024-06-04 14:47:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:35,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:47:35,230 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)] === [2024-06-04 14:47:35,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1242687113, now seen corresponding path program 5 times [2024-06-04 14:47:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146420103] [2024-06-04 14:47:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146420103] [2024-06-04 14:47:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146420103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:36,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:47:36,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103967991] [2024-06-04 14:47:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:36,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:47:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:47:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:47:36,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:36,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 544 transitions, 6344 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:36,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:36,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:36,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:38,376 INFO L124 PetriNetUnfolderBase]: 4272/7001 cut-off events. [2024-06-04 14:47:38,376 INFO L125 PetriNetUnfolderBase]: For 1968863/1968871 co-relation queries the response was YES. [2024-06-04 14:47:38,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73887 conditions, 7001 events. 4272/7001 cut-off events. For 1968863/1968871 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45850 event pairs, 856 based on Foata normal form. 7/6958 useless extension candidates. Maximal degree in co-relation 73693. Up to 6025 conditions per place. [2024-06-04 14:47:38,504 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 420 selfloop transitions, 106 changer transitions 0/573 dead transitions. [2024-06-04 14:47:38,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 573 transitions, 8566 flow [2024-06-04 14:47:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:47:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:47:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:47:38,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:47:38,505 INFO L175 Difference]: Start difference. First operand has 403 places, 544 transitions, 6344 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:47:38,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 573 transitions, 8566 flow [2024-06-04 14:47:43,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 573 transitions, 8260 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-04 14:47:43,232 INFO L231 Difference]: Finished difference. Result has 408 places, 556 transitions, 6793 flow [2024-06-04 14:47:43,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6793, PETRI_PLACES=408, PETRI_TRANSITIONS=556} [2024-06-04 14:47:43,232 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 363 predicate places. [2024-06-04 14:47:43,232 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 556 transitions, 6793 flow [2024-06-04 14:47:43,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:43,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:43,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:47:43,232 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)] === [2024-06-04 14:47:43,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash -769787197, now seen corresponding path program 2 times [2024-06-04 14:47:43,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:43,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263089232] [2024-06-04 14:47:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:45,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263089232] [2024-06-04 14:47:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263089232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:47:45,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487686040] [2024-06-04 14:47:45,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:45,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:47:45,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:47:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:47:45,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:45,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 556 transitions, 6793 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:45,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:45,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:45,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:46,962 INFO L124 PetriNetUnfolderBase]: 4285/7017 cut-off events. [2024-06-04 14:47:46,962 INFO L125 PetriNetUnfolderBase]: For 1984923/1984925 co-relation queries the response was YES. [2024-06-04 14:47:47,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75155 conditions, 7017 events. 4285/7017 cut-off events. For 1984923/1984925 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45946 event pairs, 837 based on Foata normal form. 1/6969 useless extension candidates. Maximal degree in co-relation 74958. Up to 6422 conditions per place. [2024-06-04 14:47:47,083 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 501 selfloop transitions, 27 changer transitions 0/575 dead transitions. [2024-06-04 14:47:47,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 575 transitions, 8475 flow [2024-06-04 14:47:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:47:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:47:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-04 14:47:47,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-06-04 14:47:47,084 INFO L175 Difference]: Start difference. First operand has 408 places, 556 transitions, 6793 flow. Second operand 10 states and 174 transitions. [2024-06-04 14:47:47,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 575 transitions, 8475 flow [2024-06-04 14:47:51,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 575 transitions, 8171 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-04 14:47:51,681 INFO L231 Difference]: Finished difference. Result has 414 places, 562 transitions, 6871 flow [2024-06-04 14:47:51,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6493, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6871, PETRI_PLACES=414, PETRI_TRANSITIONS=562} [2024-06-04 14:47:51,681 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 369 predicate places. [2024-06-04 14:47:51,681 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 562 transitions, 6871 flow [2024-06-04 14:47:51,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:51,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:51,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:51,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:47:51,682 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)] === [2024-06-04 14:47:51,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash -770321947, now seen corresponding path program 3 times [2024-06-04 14:47:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:51,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018666015] [2024-06-04 14:47:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018666015] [2024-06-04 14:47:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018666015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:53,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:47:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939788012] [2024-06-04 14:47:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:53,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:47:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:47:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:47:53,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:53,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 562 transitions, 6871 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:53,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:53,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:53,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:55,517 INFO L124 PetriNetUnfolderBase]: 4282/7009 cut-off events. [2024-06-04 14:47:55,517 INFO L125 PetriNetUnfolderBase]: For 1999209/1999211 co-relation queries the response was YES. [2024-06-04 14:47:55,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74674 conditions, 7009 events. 4282/7009 cut-off events. For 1999209/1999211 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 45820 event pairs, 838 based on Foata normal form. 1/6961 useless extension candidates. Maximal degree in co-relation 74475. Up to 6425 conditions per place. [2024-06-04 14:47:55,629 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 505 selfloop transitions, 21 changer transitions 0/573 dead transitions. [2024-06-04 14:47:55,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 573 transitions, 7951 flow [2024-06-04 14:47:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:47:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:47:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 14:47:55,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-04 14:47:55,630 INFO L175 Difference]: Start difference. First operand has 414 places, 562 transitions, 6871 flow. Second operand 9 states and 157 transitions. [2024-06-04 14:47:55,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 573 transitions, 7951 flow [2024-06-04 14:48:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 573 transitions, 7626 flow, removed 149 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:00,348 INFO L231 Difference]: Finished difference. Result has 416 places, 562 transitions, 6594 flow [2024-06-04 14:48:00,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6546, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6594, PETRI_PLACES=416, PETRI_TRANSITIONS=562} [2024-06-04 14:48:00,348 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 371 predicate places. [2024-06-04 14:48:00,349 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 562 transitions, 6594 flow [2024-06-04 14:48:00,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:00,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:00,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:00,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:48:00,349 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)] === [2024-06-04 14:48:00,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash -785991083, now seen corresponding path program 6 times [2024-06-04 14:48:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55158240] [2024-06-04 14:48:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55158240] [2024-06-04 14:48:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55158240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:01,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153922365] [2024-06-04 14:48:01,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:01,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:01,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 562 transitions, 6594 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:01,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:01,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:01,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:03,497 INFO L124 PetriNetUnfolderBase]: 4316/7068 cut-off events. [2024-06-04 14:48:03,497 INFO L125 PetriNetUnfolderBase]: For 2078824/2078828 co-relation queries the response was YES. [2024-06-04 14:48:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75643 conditions, 7068 events. 4316/7068 cut-off events. For 2078824/2078828 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 46361 event pairs, 849 based on Foata normal form. 6/7024 useless extension candidates. Maximal degree in co-relation 75443. Up to 5733 conditions per place. [2024-06-04 14:48:03,622 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 376 selfloop transitions, 172 changer transitions 0/595 dead transitions. [2024-06-04 14:48:03,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 595 transitions, 9293 flow [2024-06-04 14:48:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:48:03,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:48:03,623 INFO L175 Difference]: Start difference. First operand has 416 places, 562 transitions, 6594 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:48:03,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 595 transitions, 9293 flow [2024-06-04 14:48:07,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 595 transitions, 9249 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:07,708 INFO L231 Difference]: Finished difference. Result has 420 places, 574 transitions, 7482 flow [2024-06-04 14:48:07,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6550, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7482, PETRI_PLACES=420, PETRI_TRANSITIONS=574} [2024-06-04 14:48:07,708 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 375 predicate places. [2024-06-04 14:48:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 574 transitions, 7482 flow [2024-06-04 14:48:07,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:07,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:07,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:07,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:48:07,709 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)] === [2024-06-04 14:48:07,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1242673163, now seen corresponding path program 7 times [2024-06-04 14:48:07,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:07,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859587240] [2024-06-04 14:48:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859587240] [2024-06-04 14:48:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859587240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:08,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018949405] [2024-06-04 14:48:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:08,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:08,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:09,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:09,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 574 transitions, 7482 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:09,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:09,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:09,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:10,868 INFO L124 PetriNetUnfolderBase]: 4308/7057 cut-off events. [2024-06-04 14:48:10,868 INFO L125 PetriNetUnfolderBase]: For 2077533/2077541 co-relation queries the response was YES. [2024-06-04 14:48:10,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76475 conditions, 7057 events. 4308/7057 cut-off events. For 2077533/2077541 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 46282 event pairs, 861 based on Foata normal form. 7/7014 useless extension candidates. Maximal degree in co-relation 76272. Up to 6086 conditions per place. [2024-06-04 14:48:11,005 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 437 selfloop transitions, 105 changer transitions 0/589 dead transitions. [2024-06-04 14:48:11,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 589 transitions, 8984 flow [2024-06-04 14:48:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:48:11,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:48:11,006 INFO L175 Difference]: Start difference. First operand has 420 places, 574 transitions, 7482 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:48:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 589 transitions, 8984 flow [2024-06-04 14:48:16,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 589 transitions, 8312 flow, removed 184 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:16,292 INFO L231 Difference]: Finished difference. Result has 423 places, 574 transitions, 7029 flow [2024-06-04 14:48:16,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6810, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7029, PETRI_PLACES=423, PETRI_TRANSITIONS=574} [2024-06-04 14:48:16,293 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 378 predicate places. [2024-06-04 14:48:16,293 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 574 transitions, 7029 flow [2024-06-04 14:48:16,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:16,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:16,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:16,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:48:16,294 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)] === [2024-06-04 14:48:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -785976637, now seen corresponding path program 4 times [2024-06-04 14:48:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219685906] [2024-06-04 14:48:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:16,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219685906] [2024-06-04 14:48:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219685906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:17,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:17,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345319988] [2024-06-04 14:48:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:17,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:18,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:18,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 574 transitions, 7029 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:18,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:18,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:18,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:19,778 INFO L124 PetriNetUnfolderBase]: 4305/7057 cut-off events. [2024-06-04 14:48:19,779 INFO L125 PetriNetUnfolderBase]: For 2051834/2051848 co-relation queries the response was YES. [2024-06-04 14:48:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74370 conditions, 7057 events. 4305/7057 cut-off events. For 2051834/2051848 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 46268 event pairs, 810 based on Foata normal form. 15/7023 useless extension candidates. Maximal degree in co-relation 74167. Up to 6411 conditions per place. [2024-06-04 14:48:19,901 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 497 selfloop transitions, 46 changer transitions 0/590 dead transitions. [2024-06-04 14:48:19,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 590 transitions, 8317 flow [2024-06-04 14:48:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 14:48:19,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:48:19,902 INFO L175 Difference]: Start difference. First operand has 423 places, 574 transitions, 7029 flow. Second operand 9 states and 162 transitions. [2024-06-04 14:48:19,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 590 transitions, 8317 flow [2024-06-04 14:48:24,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 590 transitions, 8079 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:48:24,501 INFO L231 Difference]: Finished difference. Result has 424 places, 577 transitions, 7054 flow [2024-06-04 14:48:24,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7054, PETRI_PLACES=424, PETRI_TRANSITIONS=577} [2024-06-04 14:48:24,501 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 379 predicate places. [2024-06-04 14:48:24,501 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 577 transitions, 7054 flow [2024-06-04 14:48:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:24,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:24,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:48:24,502 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)] === [2024-06-04 14:48:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1139667273, now seen corresponding path program 8 times [2024-06-04 14:48:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412724029] [2024-06-04 14:48:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412724029] [2024-06-04 14:48:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412724029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:25,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561330864] [2024-06-04 14:48:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:25,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:26,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:26,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 577 transitions, 7054 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:26,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:26,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:26,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:27,905 INFO L124 PetriNetUnfolderBase]: 4307/7058 cut-off events. [2024-06-04 14:48:27,906 INFO L125 PetriNetUnfolderBase]: For 2074389/2074397 co-relation queries the response was YES. [2024-06-04 14:48:27,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74140 conditions, 7058 events. 4307/7058 cut-off events. For 2074389/2074397 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 46295 event pairs, 860 based on Foata normal form. 5/7013 useless extension candidates. Maximal degree in co-relation 73937. Up to 6206 conditions per place. [2024-06-04 14:48:28,024 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 458 selfloop transitions, 87 changer transitions 0/592 dead transitions. [2024-06-04 14:48:28,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 592 transitions, 8322 flow [2024-06-04 14:48:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 14:48:28,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:48:28,025 INFO L175 Difference]: Start difference. First operand has 424 places, 577 transitions, 7054 flow. Second operand 9 states and 168 transitions. [2024-06-04 14:48:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 592 transitions, 8322 flow [2024-06-04 14:48:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 592 transitions, 8088 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:32,610 INFO L231 Difference]: Finished difference. Result has 426 places, 581 transitions, 7159 flow [2024-06-04 14:48:32,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6820, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7159, PETRI_PLACES=426, PETRI_TRANSITIONS=581} [2024-06-04 14:48:32,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-04 14:48:32,611 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 581 transitions, 7159 flow [2024-06-04 14:48:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:32,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:32,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:32,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:48:32,611 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)] === [2024-06-04 14:48:32,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash -666898983, now seen corresponding path program 9 times [2024-06-04 14:48:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101373405] [2024-06-04 14:48:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101373405] [2024-06-04 14:48:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101373405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:34,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349852169] [2024-06-04 14:48:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:34,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:34,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:34,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:34,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:34,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 581 transitions, 7159 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:34,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:34,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:34,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:36,222 INFO L124 PetriNetUnfolderBase]: 4335/7097 cut-off events. [2024-06-04 14:48:36,222 INFO L125 PetriNetUnfolderBase]: For 2117216/2117220 co-relation queries the response was YES. [2024-06-04 14:48:36,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75428 conditions, 7097 events. 4335/7097 cut-off events. For 2117216/2117220 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 46572 event pairs, 836 based on Foata normal form. 4/7052 useless extension candidates. Maximal degree in co-relation 75224. Up to 6450 conditions per place. [2024-06-04 14:48:36,349 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 513 selfloop transitions, 47 changer transitions 0/607 dead transitions. [2024-06-04 14:48:36,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 607 transitions, 8934 flow [2024-06-04 14:48:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 14:48:36,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 14:48:36,350 INFO L175 Difference]: Start difference. First operand has 426 places, 581 transitions, 7159 flow. Second operand 9 states and 165 transitions. [2024-06-04 14:48:36,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 607 transitions, 8934 flow [2024-06-04 14:48:40,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 607 transitions, 8631 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:40,424 INFO L231 Difference]: Finished difference. Result has 430 places, 595 transitions, 7342 flow [2024-06-04 14:48:40,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6856, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7342, PETRI_PLACES=430, PETRI_TRANSITIONS=595} [2024-06-04 14:48:40,425 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 385 predicate places. [2024-06-04 14:48:40,425 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 595 transitions, 7342 flow [2024-06-04 14:48:40,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:40,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:40,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:40,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:48:40,425 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)] === [2024-06-04 14:48:40,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash -785977133, now seen corresponding path program 10 times [2024-06-04 14:48:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362082858] [2024-06-04 14:48:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:41,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:41,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362082858] [2024-06-04 14:48:41,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362082858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:41,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:41,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:41,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555625376] [2024-06-04 14:48:41,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:41,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:41,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:41,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:41,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:41,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:41,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 595 transitions, 7342 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:41,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:41,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:41,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:43,612 INFO L124 PetriNetUnfolderBase]: 4357/7134 cut-off events. [2024-06-04 14:48:43,612 INFO L125 PetriNetUnfolderBase]: For 2167614/2167618 co-relation queries the response was YES. [2024-06-04 14:48:43,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76112 conditions, 7134 events. 4357/7134 cut-off events. For 2167614/2167618 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 46934 event pairs, 850 based on Foata normal form. 6/7090 useless extension candidates. Maximal degree in co-relation 75905. Up to 5776 conditions per place. [2024-06-04 14:48:43,738 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 389 selfloop transitions, 185 changer transitions 0/621 dead transitions. [2024-06-04 14:48:43,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 621 transitions, 9838 flow [2024-06-04 14:48:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:48:43,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:48:43,739 INFO L175 Difference]: Start difference. First operand has 430 places, 595 transitions, 7342 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:48:43,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 621 transitions, 9838 flow [2024-06-04 14:48:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 621 transitions, 9463 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:48,516 INFO L231 Difference]: Finished difference. Result has 434 places, 603 transitions, 7673 flow [2024-06-04 14:48:48,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6967, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7673, PETRI_PLACES=434, PETRI_TRANSITIONS=603} [2024-06-04 14:48:48,517 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 389 predicate places. [2024-06-04 14:48:48,517 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 603 transitions, 7673 flow [2024-06-04 14:48:48,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:48,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:48,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:48:48,518 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)] === [2024-06-04 14:48:48,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -785194257, now seen corresponding path program 1 times [2024-06-04 14:48:48,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:48,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789884383] [2024-06-04 14:48:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:48,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789884383] [2024-06-04 14:48:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789884383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134630365] [2024-06-04 14:48:49,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:49,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:49,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 603 transitions, 7673 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:49,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:49,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:49,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:51,922 INFO L124 PetriNetUnfolderBase]: 4368/7183 cut-off events. [2024-06-04 14:48:51,923 INFO L125 PetriNetUnfolderBase]: For 2167982/2167984 co-relation queries the response was YES. [2024-06-04 14:48:52,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76274 conditions, 7183 events. 4368/7183 cut-off events. For 2167982/2167984 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 47313 event pairs, 843 based on Foata normal form. 1/7183 useless extension candidates. Maximal degree in co-relation 76066. Up to 6587 conditions per place. [2024-06-04 14:48:52,042 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 577 selfloop transitions, 21 changer transitions 0/629 dead transitions. [2024-06-04 14:48:52,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 629 transitions, 9045 flow [2024-06-04 14:48:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:48:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:48:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:48:52,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:48:52,043 INFO L175 Difference]: Start difference. First operand has 434 places, 603 transitions, 7673 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:48:52,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 629 transitions, 9045 flow [2024-06-04 14:48:58,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 629 transitions, 8590 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-04 14:48:58,337 INFO L231 Difference]: Finished difference. Result has 438 places, 606 transitions, 7380 flow [2024-06-04 14:48:58,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7380, PETRI_PLACES=438, PETRI_TRANSITIONS=606} [2024-06-04 14:48:58,337 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 393 predicate places. [2024-06-04 14:48:58,337 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 606 transitions, 7380 flow [2024-06-04 14:48:58,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:58,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:58,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:58,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:48:58,338 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)] === [2024-06-04 14:48:58,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -470565045, now seen corresponding path program 1 times [2024-06-04 14:48:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896590202] [2024-06-04 14:48:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896590202] [2024-06-04 14:48:59,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896590202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:59,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:48:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111664003] [2024-06-04 14:48:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:59,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:48:59,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:48:59,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:48:59,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:59,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 606 transitions, 7380 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:59,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:59,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:59,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:01,649 INFO L124 PetriNetUnfolderBase]: 4386/7208 cut-off events. [2024-06-04 14:49:01,649 INFO L125 PetriNetUnfolderBase]: For 2257700/2257708 co-relation queries the response was YES. [2024-06-04 14:49:01,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76263 conditions, 7208 events. 4386/7208 cut-off events. For 2257700/2257708 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 47552 event pairs, 843 based on Foata normal form. 6/7212 useless extension candidates. Maximal degree in co-relation 76054. Up to 6607 conditions per place. [2024-06-04 14:49:01,780 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 579 selfloop transitions, 22 changer transitions 0/632 dead transitions. [2024-06-04 14:49:01,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 632 transitions, 8754 flow [2024-06-04 14:49:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:49:01,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:49:01,781 INFO L175 Difference]: Start difference. First operand has 438 places, 606 transitions, 7380 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:49:01,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 632 transitions, 8754 flow [2024-06-04 14:49:07,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 632 transitions, 8614 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:07,548 INFO L231 Difference]: Finished difference. Result has 440 places, 610 transitions, 7393 flow [2024-06-04 14:49:07,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7393, PETRI_PLACES=440, PETRI_TRANSITIONS=610} [2024-06-04 14:49:07,548 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 395 predicate places. [2024-06-04 14:49:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 610 transitions, 7393 flow [2024-06-04 14:49:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:49:07,549 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)] === [2024-06-04 14:49:07,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1024661899, now seen corresponding path program 2 times [2024-06-04 14:49:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344343643] [2024-06-04 14:49:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:08,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344343643] [2024-06-04 14:49:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344343643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:08,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484898780] [2024-06-04 14:49:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:08,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:08,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:08,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 610 transitions, 7393 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:08,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:08,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:08,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:11,016 INFO L124 PetriNetUnfolderBase]: 4434/7278 cut-off events. [2024-06-04 14:49:11,017 INFO L125 PetriNetUnfolderBase]: For 2326178/2326192 co-relation queries the response was YES. [2024-06-04 14:49:11,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78806 conditions, 7278 events. 4434/7278 cut-off events. For 2326178/2326192 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47961 event pairs, 847 based on Foata normal form. 2/7278 useless extension candidates. Maximal degree in co-relation 78596. Up to 6628 conditions per place. [2024-06-04 14:49:11,150 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 570 selfloop transitions, 38 changer transitions 0/639 dead transitions. [2024-06-04 14:49:11,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 639 transitions, 9188 flow [2024-06-04 14:49:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:49:11,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:49:11,151 INFO L175 Difference]: Start difference. First operand has 440 places, 610 transitions, 7393 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:49:11,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 639 transitions, 9188 flow [2024-06-04 14:49:18,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 639 transitions, 9065 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:18,046 INFO L231 Difference]: Finished difference. Result has 443 places, 617 transitions, 7565 flow [2024-06-04 14:49:18,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7270, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7565, PETRI_PLACES=443, PETRI_TRANSITIONS=617} [2024-06-04 14:49:18,046 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 398 predicate places. [2024-06-04 14:49:18,046 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 617 transitions, 7565 flow [2024-06-04 14:49:18,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:18,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:18,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:49:18,047 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)] === [2024-06-04 14:49:18,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash -465923415, now seen corresponding path program 3 times [2024-06-04 14:49:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:18,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768892515] [2024-06-04 14:49:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:19,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768892515] [2024-06-04 14:49:19,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768892515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:19,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:19,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:19,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141919432] [2024-06-04 14:49:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:19,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:19,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:19,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:19,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:19,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:19,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 617 transitions, 7565 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:19,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:19,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:21,348 INFO L124 PetriNetUnfolderBase]: 4416/7254 cut-off events. [2024-06-04 14:49:21,348 INFO L125 PetriNetUnfolderBase]: For 2327598/2327606 co-relation queries the response was YES. [2024-06-04 14:49:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78589 conditions, 7254 events. 4416/7254 cut-off events. For 2327598/2327606 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 47809 event pairs, 843 based on Foata normal form. 6/7258 useless extension candidates. Maximal degree in co-relation 78377. Up to 6640 conditions per place. [2024-06-04 14:49:21,471 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 579 selfloop transitions, 27 changer transitions 0/637 dead transitions. [2024-06-04 14:49:21,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 637 transitions, 8861 flow [2024-06-04 14:49:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:49:21,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:49:21,472 INFO L175 Difference]: Start difference. First operand has 443 places, 617 transitions, 7565 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:49:21,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 637 transitions, 8861 flow [2024-06-04 14:49:26,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 637 transitions, 8682 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:26,136 INFO L231 Difference]: Finished difference. Result has 447 places, 617 transitions, 7447 flow [2024-06-04 14:49:26,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7386, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7447, PETRI_PLACES=447, PETRI_TRANSITIONS=617} [2024-06-04 14:49:26,136 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-06-04 14:49:26,136 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 617 transitions, 7447 flow [2024-06-04 14:49:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:26,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:26,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:26,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:49:26,137 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)] === [2024-06-04 14:49:26,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -293196375, now seen corresponding path program 4 times [2024-06-04 14:49:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123371893] [2024-06-04 14:49:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123371893] [2024-06-04 14:49:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123371893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545787270] [2024-06-04 14:49:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:27,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:27,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 617 transitions, 7447 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:27,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:29,561 INFO L124 PetriNetUnfolderBase]: 4466/7327 cut-off events. [2024-06-04 14:49:29,561 INFO L125 PetriNetUnfolderBase]: For 2391749/2391763 co-relation queries the response was YES. [2024-06-04 14:49:29,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80377 conditions, 7327 events. 4466/7327 cut-off events. For 2391749/2391763 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 48333 event pairs, 849 based on Foata normal form. 2/7327 useless extension candidates. Maximal degree in co-relation 80163. Up to 6613 conditions per place. [2024-06-04 14:49:29,693 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 548 selfloop transitions, 64 changer transitions 0/643 dead transitions. [2024-06-04 14:49:29,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 643 transitions, 9563 flow [2024-06-04 14:49:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:49:29,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:49:29,694 INFO L175 Difference]: Start difference. First operand has 447 places, 617 transitions, 7447 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:49:29,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 643 transitions, 9563 flow [2024-06-04 14:49:36,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 643 transitions, 9482 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:49:36,584 INFO L231 Difference]: Finished difference. Result has 449 places, 624 transitions, 7749 flow [2024-06-04 14:49:36,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7366, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7749, PETRI_PLACES=449, PETRI_TRANSITIONS=624} [2024-06-04 14:49:36,585 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 404 predicate places. [2024-06-04 14:49:36,585 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 624 transitions, 7749 flow [2024-06-04 14:49:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:36,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:36,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:49:36,585 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)] === [2024-06-04 14:49:36,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -293433525, now seen corresponding path program 5 times [2024-06-04 14:49:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647992752] [2024-06-04 14:49:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:37,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647992752] [2024-06-04 14:49:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647992752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:37,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264476648] [2024-06-04 14:49:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:37,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:37,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:37,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 624 transitions, 7749 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:37,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:37,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:37,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:39,988 INFO L124 PetriNetUnfolderBase]: 4465/7327 cut-off events. [2024-06-04 14:49:39,988 INFO L125 PetriNetUnfolderBase]: For 2431103/2431117 co-relation queries the response was YES. [2024-06-04 14:49:40,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81228 conditions, 7327 events. 4465/7327 cut-off events. For 2431103/2431117 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 48323 event pairs, 847 based on Foata normal form. 6/7330 useless extension candidates. Maximal degree in co-relation 81012. Up to 6696 conditions per place. [2024-06-04 14:49:40,126 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 579 selfloop transitions, 34 changer transitions 0/644 dead transitions. [2024-06-04 14:49:40,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 644 transitions, 9158 flow [2024-06-04 14:49:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 14:49:40,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:49:40,127 INFO L175 Difference]: Start difference. First operand has 449 places, 624 transitions, 7749 flow. Second operand 9 states and 168 transitions. [2024-06-04 14:49:40,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 644 transitions, 9158 flow [2024-06-04 14:49:46,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 644 transitions, 8946 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:49:46,435 INFO L231 Difference]: Finished difference. Result has 452 places, 627 transitions, 7719 flow [2024-06-04 14:49:46,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7541, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7719, PETRI_PLACES=452, PETRI_TRANSITIONS=627} [2024-06-04 14:49:46,436 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 407 predicate places. [2024-06-04 14:49:46,436 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 627 transitions, 7719 flow [2024-06-04 14:49:46,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:46,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:46,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:49:46,436 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)] === [2024-06-04 14:49:46,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash -427177421, now seen corresponding path program 6 times [2024-06-04 14:49:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858303720] [2024-06-04 14:49:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:46,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:47,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858303720] [2024-06-04 14:49:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858303720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:47,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:47,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365562982] [2024-06-04 14:49:47,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:47,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:47,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 627 transitions, 7719 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:47,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:47,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:49,913 INFO L124 PetriNetUnfolderBase]: 4461/7321 cut-off events. [2024-06-04 14:49:49,913 INFO L125 PetriNetUnfolderBase]: For 2389119/2389133 co-relation queries the response was YES. [2024-06-04 14:49:50,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80738 conditions, 7321 events. 4461/7321 cut-off events. For 2389119/2389133 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48313 event pairs, 845 based on Foata normal form. 1/7320 useless extension candidates. Maximal degree in co-relation 80521. Up to 6691 conditions per place. [2024-06-04 14:49:50,045 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 581 selfloop transitions, 39 changer transitions 0/651 dead transitions. [2024-06-04 14:49:50,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 651 transitions, 9234 flow [2024-06-04 14:49:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:49:50,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:49:50,046 INFO L175 Difference]: Start difference. First operand has 452 places, 627 transitions, 7719 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:49:50,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 651 transitions, 9234 flow [2024-06-04 14:49:57,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 651 transitions, 8992 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:57,393 INFO L231 Difference]: Finished difference. Result has 455 places, 635 transitions, 7797 flow [2024-06-04 14:49:57,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7797, PETRI_PLACES=455, PETRI_TRANSITIONS=635} [2024-06-04 14:49:57,393 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 410 predicate places. [2024-06-04 14:49:57,393 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 635 transitions, 7797 flow [2024-06-04 14:49:57,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:57,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:57,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:57,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:49:57,394 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)] === [2024-06-04 14:49:57,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1065365563, now seen corresponding path program 7 times [2024-06-04 14:49:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264110903] [2024-06-04 14:49:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:58,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264110903] [2024-06-04 14:49:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264110903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:58,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78149811] [2024-06-04 14:49:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:58,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:58,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:58,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 635 transitions, 7797 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:58,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:58,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:58,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:00,756 INFO L124 PetriNetUnfolderBase]: 4509/7393 cut-off events. [2024-06-04 14:50:00,756 INFO L125 PetriNetUnfolderBase]: For 2499556/2499572 co-relation queries the response was YES. [2024-06-04 14:50:00,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82165 conditions, 7393 events. 4509/7393 cut-off events. For 2499556/2499572 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 48763 event pairs, 861 based on Foata normal form. 2/7393 useless extension candidates. Maximal degree in co-relation 81946. Up to 6696 conditions per place. [2024-06-04 14:50:00,891 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 572 selfloop transitions, 57 changer transitions 0/660 dead transitions. [2024-06-04 14:50:00,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 660 transitions, 9688 flow [2024-06-04 14:50:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:50:00,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:50:00,892 INFO L175 Difference]: Start difference. First operand has 455 places, 635 transitions, 7797 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:50:00,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 660 transitions, 9688 flow [2024-06-04 14:50:08,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 660 transitions, 9563 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:08,728 INFO L231 Difference]: Finished difference. Result has 460 places, 642 transitions, 8027 flow [2024-06-04 14:50:08,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7672, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8027, PETRI_PLACES=460, PETRI_TRANSITIONS=642} [2024-06-04 14:50:08,729 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 415 predicate places. [2024-06-04 14:50:08,729 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 642 transitions, 8027 flow [2024-06-04 14:50:08,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:08,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:08,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:08,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:50:08,729 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:08,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1065602713, now seen corresponding path program 8 times [2024-06-04 14:50:08,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:08,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485372165] [2024-06-04 14:50:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:09,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485372165] [2024-06-04 14:50:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485372165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128944000] [2024-06-04 14:50:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:10,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:10,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 642 transitions, 8027 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:10,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:10,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:10,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:12,372 INFO L124 PetriNetUnfolderBase]: 4516/7403 cut-off events. [2024-06-04 14:50:12,376 INFO L125 PetriNetUnfolderBase]: For 2539490/2539506 co-relation queries the response was YES. [2024-06-04 14:50:12,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83048 conditions, 7403 events. 4516/7403 cut-off events. For 2539490/2539506 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 48840 event pairs, 859 based on Foata normal form. 6/7406 useless extension candidates. Maximal degree in co-relation 82826. Up to 6751 conditions per place. [2024-06-04 14:50:12,503 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 585 selfloop transitions, 43 changer transitions 0/659 dead transitions. [2024-06-04 14:50:12,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 659 transitions, 9464 flow [2024-06-04 14:50:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 14:50:12,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-04 14:50:12,504 INFO L175 Difference]: Start difference. First operand has 460 places, 642 transitions, 8027 flow. Second operand 9 states and 167 transitions. [2024-06-04 14:50:12,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 659 transitions, 9464 flow [2024-06-04 14:50:18,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 9305 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:18,737 INFO L231 Difference]: Finished difference. Result has 464 places, 645 transitions, 8070 flow [2024-06-04 14:50:18,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8070, PETRI_PLACES=464, PETRI_TRANSITIONS=645} [2024-06-04 14:50:18,737 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 419 predicate places. [2024-06-04 14:50:18,737 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 645 transitions, 8070 flow [2024-06-04 14:50:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:18,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:50:18,738 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:18,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -780265693, now seen corresponding path program 9 times [2024-06-04 14:50:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999052981] [2024-06-04 14:50:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:20,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:20,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999052981] [2024-06-04 14:50:20,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999052981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:20,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:20,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932443423] [2024-06-04 14:50:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:20,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:20,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:20,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 645 transitions, 8070 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:20,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:20,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:20,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:22,284 INFO L124 PetriNetUnfolderBase]: 4532/7429 cut-off events. [2024-06-04 14:50:22,284 INFO L125 PetriNetUnfolderBase]: For 2548563/2548585 co-relation queries the response was YES. [2024-06-04 14:50:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83627 conditions, 7429 events. 4532/7429 cut-off events. For 2548563/2548585 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 48961 event pairs, 859 based on Foata normal form. 2/7428 useless extension candidates. Maximal degree in co-relation 83403. Up to 6578 conditions per place. [2024-06-04 14:50:22,424 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 515 selfloop transitions, 122 changer transitions 0/668 dead transitions. [2024-06-04 14:50:22,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 668 transitions, 9975 flow [2024-06-04 14:50:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:50:22,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:50:22,425 INFO L175 Difference]: Start difference. First operand has 464 places, 645 transitions, 8070 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:50:22,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 668 transitions, 9975 flow [2024-06-04 14:50:29,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 668 transitions, 9804 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:29,482 INFO L231 Difference]: Finished difference. Result has 467 places, 651 transitions, 8446 flow [2024-06-04 14:50:29,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8446, PETRI_PLACES=467, PETRI_TRANSITIONS=651} [2024-06-04 14:50:29,482 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 422 predicate places. [2024-06-04 14:50:29,483 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 651 transitions, 8446 flow [2024-06-04 14:50:29,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:29,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:29,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:50:29,483 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:29,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1065596203, now seen corresponding path program 10 times [2024-06-04 14:50:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38786171] [2024-06-04 14:50:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:30,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38786171] [2024-06-04 14:50:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38786171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:30,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:30,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633684343] [2024-06-04 14:50:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:30,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 651 transitions, 8446 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:30,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:33,134 INFO L124 PetriNetUnfolderBase]: 4536/7435 cut-off events. [2024-06-04 14:50:33,135 INFO L125 PetriNetUnfolderBase]: For 2547720/2547736 co-relation queries the response was YES. [2024-06-04 14:50:33,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84289 conditions, 7435 events. 4536/7435 cut-off events. For 2547720/2547736 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 49069 event pairs, 857 based on Foata normal form. 2/7435 useless extension candidates. Maximal degree in co-relation 84063. Up to 6762 conditions per place. [2024-06-04 14:50:33,263 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 586 selfloop transitions, 50 changer transitions 0/667 dead transitions. [2024-06-04 14:50:33,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 667 transitions, 10134 flow [2024-06-04 14:50:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:50:33,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:50:33,265 INFO L175 Difference]: Start difference. First operand has 467 places, 651 transitions, 8446 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:50:33,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 667 transitions, 10134 flow [2024-06-04 14:50:40,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 667 transitions, 9967 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-04 14:50:40,400 INFO L231 Difference]: Finished difference. Result has 471 places, 651 transitions, 8386 flow [2024-06-04 14:50:40,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8279, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8386, PETRI_PLACES=471, PETRI_TRANSITIONS=651} [2024-06-04 14:50:40,401 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 426 predicate places. [2024-06-04 14:50:40,401 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 651 transitions, 8386 flow [2024-06-04 14:50:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:40,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:50:40,401 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2026418659, now seen corresponding path program 1 times [2024-06-04 14:50:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393575718] [2024-06-04 14:50:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393575718] [2024-06-04 14:50:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393575718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:41,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:41,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246893664] [2024-06-04 14:50:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:41,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:41,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 651 transitions, 8386 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:41,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:41,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:41,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:43,714 INFO L124 PetriNetUnfolderBase]: 4569/7434 cut-off events. [2024-06-04 14:50:43,714 INFO L125 PetriNetUnfolderBase]: For 2576150/2576168 co-relation queries the response was YES. [2024-06-04 14:50:43,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84705 conditions, 7434 events. 4569/7434 cut-off events. For 2576150/2576168 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 48637 event pairs, 671 based on Foata normal form. 14/7396 useless extension candidates. Maximal degree in co-relation 84477. Up to 6596 conditions per place. [2024-06-04 14:50:43,863 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 582 selfloop transitions, 54 changer transitions 0/683 dead transitions. [2024-06-04 14:50:43,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 683 transitions, 9887 flow [2024-06-04 14:50:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:50:43,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:50:43,864 INFO L175 Difference]: Start difference. First operand has 471 places, 651 transitions, 8386 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:50:43,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 683 transitions, 9887 flow [2024-06-04 14:50:50,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 683 transitions, 9701 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:50,738 INFO L231 Difference]: Finished difference. Result has 473 places, 654 transitions, 8458 flow [2024-06-04 14:50:50,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8200, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8458, PETRI_PLACES=473, PETRI_TRANSITIONS=654} [2024-06-04 14:50:50,738 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 428 predicate places. [2024-06-04 14:50:50,738 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 654 transitions, 8458 flow [2024-06-04 14:50:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:50,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:50,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:50:50,739 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:50,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2035673089, now seen corresponding path program 2 times [2024-06-04 14:50:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421029519] [2024-06-04 14:50:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421029519] [2024-06-04 14:50:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421029519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630462229] [2024-06-04 14:50:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:52,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:52,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 654 transitions, 8458 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:52,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:52,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:52,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:54,390 INFO L124 PetriNetUnfolderBase]: 4585/7466 cut-off events. [2024-06-04 14:50:54,390 INFO L125 PetriNetUnfolderBase]: For 2611784/2611807 co-relation queries the response was YES. [2024-06-04 14:50:54,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85371 conditions, 7466 events. 4585/7466 cut-off events. For 2611784/2611807 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 48999 event pairs, 826 based on Foata normal form. 19/7420 useless extension candidates. Maximal degree in co-relation 85142. Up to 6675 conditions per place. [2024-06-04 14:50:54,523 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 580 selfloop transitions, 55 changer transitions 0/682 dead transitions. [2024-06-04 14:50:54,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 682 transitions, 9951 flow [2024-06-04 14:50:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:50:54,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:50:54,524 INFO L175 Difference]: Start difference. First operand has 473 places, 654 transitions, 8458 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:50:54,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 682 transitions, 9951 flow [2024-06-04 14:50:59,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 682 transitions, 9715 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:59,892 INFO L231 Difference]: Finished difference. Result has 475 places, 657 transitions, 8488 flow [2024-06-04 14:50:59,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8222, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8488, PETRI_PLACES=475, PETRI_TRANSITIONS=657} [2024-06-04 14:50:59,892 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 430 predicate places. [2024-06-04 14:50:59,892 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 657 transitions, 8488 flow [2024-06-04 14:50:59,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:59,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:59,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:59,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:50:59,893 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:50:59,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2094249951, now seen corresponding path program 3 times [2024-06-04 14:50:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509886205] [2024-06-04 14:50:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509886205] [2024-06-04 14:51:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509886205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:01,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:51:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506228983] [2024-06-04 14:51:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:51:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:51:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:51:01,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:01,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 657 transitions, 8488 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:01,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:01,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:03,299 INFO L124 PetriNetUnfolderBase]: 4601/7490 cut-off events. [2024-06-04 14:51:03,299 INFO L125 PetriNetUnfolderBase]: For 2640441/2640461 co-relation queries the response was YES. [2024-06-04 14:51:03,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85873 conditions, 7490 events. 4601/7490 cut-off events. For 2640441/2640461 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49141 event pairs, 830 based on Foata normal form. 14/7435 useless extension candidates. Maximal degree in co-relation 85643. Up to 6709 conditions per place. [2024-06-04 14:51:03,441 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 581 selfloop transitions, 56 changer transitions 0/684 dead transitions. [2024-06-04 14:51:03,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 684 transitions, 9989 flow [2024-06-04 14:51:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:51:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:51:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:51:03,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:51:03,442 INFO L175 Difference]: Start difference. First operand has 475 places, 657 transitions, 8488 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:51:03,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 684 transitions, 9989 flow [2024-06-04 14:51:09,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 684 transitions, 9745 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:09,204 INFO L231 Difference]: Finished difference. Result has 477 places, 660 transitions, 8518 flow [2024-06-04 14:51:09,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8244, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8518, PETRI_PLACES=477, PETRI_TRANSITIONS=660} [2024-06-04 14:51:09,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 432 predicate places. [2024-06-04 14:51:09,204 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 660 transitions, 8518 flow [2024-06-04 14:51:09,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:09,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:09,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:51:09,205 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:09,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2094263839, now seen corresponding path program 1 times [2024-06-04 14:51:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954835090] [2024-06-04 14:51:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:10,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954835090] [2024-06-04 14:51:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954835090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:10,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:10,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:51:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456057103] [2024-06-04 14:51:10,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:51:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:51:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:51:10,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:10,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 660 transitions, 8518 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:10,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:10,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:10,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:13,188 INFO L124 PetriNetUnfolderBase]: 4603/7493 cut-off events. [2024-06-04 14:51:13,189 INFO L125 PetriNetUnfolderBase]: For 2634368/2634391 co-relation queries the response was YES. [2024-06-04 14:51:13,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85860 conditions, 7493 events. 4603/7493 cut-off events. For 2634368/2634391 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 49223 event pairs, 829 based on Foata normal form. 17/7445 useless extension candidates. Maximal degree in co-relation 85629. Up to 6712 conditions per place. [2024-06-04 14:51:13,331 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 580 selfloop transitions, 60 changer transitions 0/687 dead transitions. [2024-06-04 14:51:13,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 687 transitions, 10041 flow [2024-06-04 14:51:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:51:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:51:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:51:13,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:51:13,332 INFO L175 Difference]: Start difference. First operand has 477 places, 660 transitions, 8518 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:51:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 687 transitions, 10041 flow [2024-06-04 14:51:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 687 transitions, 9789 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:19,569 INFO L231 Difference]: Finished difference. Result has 479 places, 664 transitions, 8572 flow [2024-06-04 14:51:19,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8266, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8572, PETRI_PLACES=479, PETRI_TRANSITIONS=664} [2024-06-04 14:51:19,570 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 434 predicate places. [2024-06-04 14:51:19,570 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 664 transitions, 8572 flow [2024-06-04 14:51:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:19,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:19,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:51:19,570 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1142022513, now seen corresponding path program 1 times [2024-06-04 14:51:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220833544] [2024-06-04 14:51:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220833544] [2024-06-04 14:51:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220833544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:20,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:20,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396648463] [2024-06-04 14:51:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:20,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:20,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 664 transitions, 8572 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:51:20,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:20,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:20,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:22,696 INFO L124 PetriNetUnfolderBase]: 4782/7718 cut-off events. [2024-06-04 14:51:22,697 INFO L125 PetriNetUnfolderBase]: For 2645583/2645587 co-relation queries the response was YES. [2024-06-04 14:51:22,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87150 conditions, 7718 events. 4782/7718 cut-off events. For 2645583/2645587 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 50053 event pairs, 894 based on Foata normal form. 3/7720 useless extension candidates. Maximal degree in co-relation 86918. Up to 7054 conditions per place. [2024-06-04 14:51:22,848 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 623 selfloop transitions, 60 changer transitions 0/688 dead transitions. [2024-06-04 14:51:22,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 688 transitions, 10095 flow [2024-06-04 14:51:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:51:22,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:51:22,849 INFO L175 Difference]: Start difference. First operand has 479 places, 664 transitions, 8572 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:51:22,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 688 transitions, 10095 flow [2024-06-04 14:51:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 688 transitions, 9841 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:29,609 INFO L231 Difference]: Finished difference. Result has 480 places, 667 transitions, 8545 flow [2024-06-04 14:51:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8318, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8545, PETRI_PLACES=480, PETRI_TRANSITIONS=667} [2024-06-04 14:51:29,610 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 435 predicate places. [2024-06-04 14:51:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 667 transitions, 8545 flow [2024-06-04 14:51:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:51:29,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:51:29,610 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:29,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -185554602, now seen corresponding path program 1 times [2024-06-04 14:51:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997081575] [2024-06-04 14:51:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:30,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997081575] [2024-06-04 14:51:30,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997081575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:30,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:30,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:51:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170025274] [2024-06-04 14:51:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:30,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:51:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:51:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:51:30,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:30,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 667 transitions, 8545 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:30,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:30,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:33,093 INFO L124 PetriNetUnfolderBase]: 4802/7745 cut-off events. [2024-06-04 14:51:33,093 INFO L125 PetriNetUnfolderBase]: For 2718726/2718730 co-relation queries the response was YES. [2024-06-04 14:51:33,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87677 conditions, 7745 events. 4802/7745 cut-off events. For 2718726/2718730 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 50213 event pairs, 881 based on Foata normal form. 4/7748 useless extension candidates. Maximal degree in co-relation 87444. Up to 6960 conditions per place. [2024-06-04 14:51:33,231 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 607 selfloop transitions, 86 changer transitions 0/698 dead transitions. [2024-06-04 14:51:33,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 698 transitions, 10191 flow [2024-06-04 14:51:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:51:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:51:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:51:33,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:51:33,232 INFO L175 Difference]: Start difference. First operand has 480 places, 667 transitions, 8545 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:51:33,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 698 transitions, 10191 flow [2024-06-04 14:51:40,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 698 transitions, 9995 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:40,743 INFO L231 Difference]: Finished difference. Result has 483 places, 671 transitions, 8698 flow [2024-06-04 14:51:40,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8349, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8698, PETRI_PLACES=483, PETRI_TRANSITIONS=671} [2024-06-04 14:51:40,744 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 438 predicate places. [2024-06-04 14:51:40,744 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 671 transitions, 8698 flow [2024-06-04 14:51:40,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:40,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:40,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:51:40,745 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:40,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1142380563, now seen corresponding path program 2 times [2024-06-04 14:51:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414068926] [2024-06-04 14:51:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:41,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414068926] [2024-06-04 14:51:41,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414068926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:41,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438536489] [2024-06-04 14:51:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:41,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:41,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 671 transitions, 8698 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:51:41,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:41,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:41,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:44,431 INFO L124 PetriNetUnfolderBase]: 4815/7768 cut-off events. [2024-06-04 14:51:44,432 INFO L125 PetriNetUnfolderBase]: For 2732712/2732716 co-relation queries the response was YES. [2024-06-04 14:51:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89083 conditions, 7768 events. 4815/7768 cut-off events. For 2732712/2732716 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 50345 event pairs, 892 based on Foata normal form. 3/7770 useless extension candidates. Maximal degree in co-relation 88849. Up to 7082 conditions per place. [2024-06-04 14:51:44,576 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 620 selfloop transitions, 71 changer transitions 0/696 dead transitions. [2024-06-04 14:51:44,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 696 transitions, 10664 flow [2024-06-04 14:51:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:51:44,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:51:44,577 INFO L175 Difference]: Start difference. First operand has 483 places, 671 transitions, 8698 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:51:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 696 transitions, 10664 flow [2024-06-04 14:51:50,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 696 transitions, 10405 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-04 14:51:50,973 INFO L231 Difference]: Finished difference. Result has 485 places, 677 transitions, 8796 flow [2024-06-04 14:51:50,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8439, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8796, PETRI_PLACES=485, PETRI_TRANSITIONS=677} [2024-06-04 14:51:50,973 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 440 predicate places. [2024-06-04 14:51:50,973 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 677 transitions, 8796 flow [2024-06-04 14:51:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:51:50,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:50,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:50,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:51:50,973 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:51:50,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1147557873, now seen corresponding path program 3 times [2024-06-04 14:51:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600302193] [2024-06-04 14:51:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:51,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600302193] [2024-06-04 14:51:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600302193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:51,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:51,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:51:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461528268] [2024-06-04 14:51:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:51,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:51:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:51:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:51:51,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:51:51,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 677 transitions, 8796 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:51:51,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:51,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:51:51,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:54,622 INFO L124 PetriNetUnfolderBase]: 4812/7773 cut-off events. [2024-06-04 14:51:54,622 INFO L125 PetriNetUnfolderBase]: For 2755487/2755497 co-relation queries the response was YES. [2024-06-04 14:51:54,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88631 conditions, 7773 events. 4812/7773 cut-off events. For 2755487/2755497 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 50491 event pairs, 876 based on Foata normal form. 11/7783 useless extension candidates. Maximal degree in co-relation 88397. Up to 7096 conditions per place. [2024-06-04 14:51:54,758 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 634 selfloop transitions, 63 changer transitions 0/702 dead transitions. [2024-06-04 14:51:54,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 702 transitions, 10273 flow [2024-06-04 14:51:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:51:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:51:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:51:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:51:54,760 INFO L175 Difference]: Start difference. First operand has 485 places, 677 transitions, 8796 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:51:54,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 702 transitions, 10273 flow [2024-06-04 14:52:01,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 702 transitions, 10048 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-04 14:52:01,498 INFO L231 Difference]: Finished difference. Result has 489 places, 677 transitions, 8703 flow [2024-06-04 14:52:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8571, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8703, PETRI_PLACES=489, PETRI_TRANSITIONS=677} [2024-06-04 14:52:01,498 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 444 predicate places. [2024-06-04 14:52:01,498 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 677 transitions, 8703 flow [2024-06-04 14:52:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:52:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:01,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:52:01,499 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:01,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1142380780, now seen corresponding path program 2 times [2024-06-04 14:52:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054279792] [2024-06-04 14:52:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054279792] [2024-06-04 14:52:02,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054279792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:02,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:52:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773865661] [2024-06-04 14:52:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:02,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:52:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:52:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:52:02,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:02,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 677 transitions, 8703 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:02,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:02,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:02,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:05,273 INFO L124 PetriNetUnfolderBase]: 4832/7791 cut-off events. [2024-06-04 14:52:05,273 INFO L125 PetriNetUnfolderBase]: For 2828747/2828751 co-relation queries the response was YES. [2024-06-04 14:52:05,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89378 conditions, 7791 events. 4832/7791 cut-off events. For 2828747/2828751 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 50506 event pairs, 881 based on Foata normal form. 4/7794 useless extension candidates. Maximal degree in co-relation 89142. Up to 6984 conditions per place. [2024-06-04 14:52:05,420 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 608 selfloop transitions, 93 changer transitions 0/706 dead transitions. [2024-06-04 14:52:05,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 706 transitions, 10381 flow [2024-06-04 14:52:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:52:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:52:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:52:05,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:52:05,421 INFO L175 Difference]: Start difference. First operand has 489 places, 677 transitions, 8703 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:52:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 706 transitions, 10381 flow [2024-06-04 14:52:12,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 706 transitions, 10226 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:12,180 INFO L231 Difference]: Finished difference. Result has 491 places, 681 transitions, 8919 flow [2024-06-04 14:52:12,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8548, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8919, PETRI_PLACES=491, PETRI_TRANSITIONS=681} [2024-06-04 14:52:12,180 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 446 predicate places. [2024-06-04 14:52:12,180 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 681 transitions, 8919 flow [2024-06-04 14:52:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:12,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:12,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:12,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:52:12,181 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:12,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1136839623, now seen corresponding path program 4 times [2024-06-04 14:52:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056350345] [2024-06-04 14:52:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:13,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:13,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056350345] [2024-06-04 14:52:13,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056350345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:13,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:13,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:52:13,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829933812] [2024-06-04 14:52:13,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:13,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:52:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:52:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:52:13,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:13,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 681 transitions, 8919 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:52:13,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:13,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:13,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:15,817 INFO L124 PetriNetUnfolderBase]: 4845/7825 cut-off events. [2024-06-04 14:52:15,817 INFO L125 PetriNetUnfolderBase]: For 2845878/2845888 co-relation queries the response was YES. [2024-06-04 14:52:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90870 conditions, 7825 events. 4845/7825 cut-off events. For 2845878/2845888 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 50930 event pairs, 876 based on Foata normal form. 11/7835 useless extension candidates. Maximal degree in co-relation 90633. Up to 7118 conditions per place. [2024-06-04 14:52:15,978 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 632 selfloop transitions, 73 changer transitions 0/710 dead transitions. [2024-06-04 14:52:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 710 transitions, 10952 flow [2024-06-04 14:52:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:52:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:52:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:52:15,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:52:15,979 INFO L175 Difference]: Start difference. First operand has 491 places, 681 transitions, 8919 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:52:15,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 710 transitions, 10952 flow [2024-06-04 14:52:22,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 710 transitions, 10615 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:22,747 INFO L231 Difference]: Finished difference. Result has 492 places, 687 transitions, 8954 flow [2024-06-04 14:52:22,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8582, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8954, PETRI_PLACES=492, PETRI_TRANSITIONS=687} [2024-06-04 14:52:22,747 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 447 predicate places. [2024-06-04 14:52:22,747 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 687 transitions, 8954 flow [2024-06-04 14:52:22,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:52:22,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:22,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:52:22,748 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:22,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1142380997, now seen corresponding path program 1 times [2024-06-04 14:52:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002349322] [2024-06-04 14:52:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:24,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002349322] [2024-06-04 14:52:24,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002349322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:24,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:24,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:52:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980340708] [2024-06-04 14:52:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:52:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:52:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:52:24,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:24,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 687 transitions, 8954 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:24,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:24,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:24,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:27,000 INFO L124 PetriNetUnfolderBase]: 4855/7825 cut-off events. [2024-06-04 14:52:27,000 INFO L125 PetriNetUnfolderBase]: For 2887062/2887066 co-relation queries the response was YES. [2024-06-04 14:52:27,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90765 conditions, 7825 events. 4855/7825 cut-off events. For 2887062/2887066 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 50726 event pairs, 875 based on Foata normal form. 4/7828 useless extension candidates. Maximal degree in co-relation 90527. Up to 7147 conditions per place. [2024-06-04 14:52:27,149 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 641 selfloop transitions, 68 changer transitions 0/714 dead transitions. [2024-06-04 14:52:27,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 714 transitions, 10588 flow [2024-06-04 14:52:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:52:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:52:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 14:52:27,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 14:52:27,150 INFO L175 Difference]: Start difference. First operand has 492 places, 687 transitions, 8954 flow. Second operand 9 states and 170 transitions. [2024-06-04 14:52:27,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 714 transitions, 10588 flow [2024-06-04 14:52:34,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 714 transitions, 10423 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-04 14:52:34,372 INFO L231 Difference]: Finished difference. Result has 497 places, 691 transitions, 9086 flow [2024-06-04 14:52:34,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9086, PETRI_PLACES=497, PETRI_TRANSITIONS=691} [2024-06-04 14:52:34,372 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 452 predicate places. [2024-06-04 14:52:34,372 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 691 transitions, 9086 flow [2024-06-04 14:52:34,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:34,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:34,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:34,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:52:34,373 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:34,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1405240748, now seen corresponding path program 3 times [2024-06-04 14:52:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744510123] [2024-06-04 14:52:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744510123] [2024-06-04 14:52:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744510123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:35,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:52:35,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309848927] [2024-06-04 14:52:35,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:52:35,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:52:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:52:35,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:35,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 691 transitions, 9086 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:35,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:35,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:35,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:38,195 INFO L124 PetriNetUnfolderBase]: 4875/7857 cut-off events. [2024-06-04 14:52:38,195 INFO L125 PetriNetUnfolderBase]: For 2954290/2954294 co-relation queries the response was YES. [2024-06-04 14:52:38,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92148 conditions, 7857 events. 4875/7857 cut-off events. For 2954290/2954294 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 51038 event pairs, 879 based on Foata normal form. 4/7860 useless extension candidates. Maximal degree in co-relation 91908. Up to 6996 conditions per place. [2024-06-04 14:52:38,346 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 604 selfloop transitions, 108 changer transitions 0/717 dead transitions. [2024-06-04 14:52:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 717 transitions, 10788 flow [2024-06-04 14:52:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:52:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:52:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 14:52:38,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-04 14:52:38,347 INFO L175 Difference]: Start difference. First operand has 497 places, 691 transitions, 9086 flow. Second operand 9 states and 175 transitions. [2024-06-04 14:52:38,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 717 transitions, 10788 flow [2024-06-04 14:52:46,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 717 transitions, 10519 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:46,381 INFO L231 Difference]: Finished difference. Result has 499 places, 695 transitions, 9230 flow [2024-06-04 14:52:46,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8817, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9230, PETRI_PLACES=499, PETRI_TRANSITIONS=695} [2024-06-04 14:52:46,382 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 454 predicate places. [2024-06-04 14:52:46,382 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 695 transitions, 9230 flow [2024-06-04 14:52:46,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:46,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:46,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:46,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:52:46,382 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:46,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1405240965, now seen corresponding path program 2 times [2024-06-04 14:52:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615781615] [2024-06-04 14:52:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615781615] [2024-06-04 14:52:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615781615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:52:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009475527] [2024-06-04 14:52:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:47,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:52:47,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:52:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:52:47,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:52:47,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 695 transitions, 9230 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:47,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:47,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:52:47,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:50,413 INFO L124 PetriNetUnfolderBase]: 4885/7871 cut-off events. [2024-06-04 14:52:50,413 INFO L125 PetriNetUnfolderBase]: For 2971556/2971560 co-relation queries the response was YES. [2024-06-04 14:52:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93266 conditions, 7871 events. 4885/7871 cut-off events. For 2971556/2971560 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 51036 event pairs, 875 based on Foata normal form. 4/7874 useless extension candidates. Maximal degree in co-relation 93025. Up to 7153 conditions per place. [2024-06-04 14:52:50,563 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 634 selfloop transitions, 80 changer transitions 0/719 dead transitions. [2024-06-04 14:52:50,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 719 transitions, 10876 flow [2024-06-04 14:52:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:52:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:52:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:52:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:52:50,564 INFO L175 Difference]: Start difference. First operand has 499 places, 695 transitions, 9230 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:52:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 719 transitions, 10876 flow [2024-06-04 14:52:58,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 719 transitions, 10497 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:58,298 INFO L231 Difference]: Finished difference. Result has 501 places, 699 transitions, 9184 flow [2024-06-04 14:52:58,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9184, PETRI_PLACES=501, PETRI_TRANSITIONS=699} [2024-06-04 14:52:58,298 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 456 predicate places. [2024-06-04 14:52:58,298 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 699 transitions, 9184 flow [2024-06-04 14:52:58,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:58,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:58,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:58,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:52:58,298 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:52:58,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1405248684, now seen corresponding path program 1 times [2024-06-04 14:52:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:58,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693705010] [2024-06-04 14:52:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:58,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693705010] [2024-06-04 14:52:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693705010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:52:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533517636] [2024-06-04 14:52:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:59,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:52:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:52:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:52:59,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:52:59,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 699 transitions, 9184 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:59,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:59,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:52:59,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:02,443 INFO L124 PetriNetUnfolderBase]: 4723/7660 cut-off events. [2024-06-04 14:53:02,443 INFO L125 PetriNetUnfolderBase]: For 3003236/3003250 co-relation queries the response was YES. [2024-06-04 14:53:02,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92447 conditions, 7660 events. 4723/7660 cut-off events. For 3003236/3003250 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 50249 event pairs, 821 based on Foata normal form. 4/7595 useless extension candidates. Maximal degree in co-relation 92205. Up to 6842 conditions per place. [2024-06-04 14:53:02,591 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 603 selfloop transitions, 66 changer transitions 0/723 dead transitions. [2024-06-04 14:53:02,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 723 transitions, 10706 flow [2024-06-04 14:53:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:53:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:53:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:53:02,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:53:02,592 INFO L175 Difference]: Start difference. First operand has 501 places, 699 transitions, 9184 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:53:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 723 transitions, 10706 flow [2024-06-04 14:53:10,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 723 transitions, 10401 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-04 14:53:10,993 INFO L231 Difference]: Finished difference. Result has 503 places, 703 transitions, 9150 flow [2024-06-04 14:53:10,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8879, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9150, PETRI_PLACES=503, PETRI_TRANSITIONS=703} [2024-06-04 14:53:10,994 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 458 predicate places. [2024-06-04 14:53:10,994 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 703 transitions, 9150 flow [2024-06-04 14:53:10,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:10,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:10,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:53:10,994 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:10,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1405248405, now seen corresponding path program 3 times [2024-06-04 14:53:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919225035] [2024-06-04 14:53:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:12,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:12,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919225035] [2024-06-04 14:53:12,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919225035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:12,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:12,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:53:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065765123] [2024-06-04 14:53:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:53:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:53:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:53:12,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:12,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 703 transitions, 9150 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:12,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:12,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:12,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:15,099 INFO L124 PetriNetUnfolderBase]: 4905/7895 cut-off events. [2024-06-04 14:53:15,100 INFO L125 PetriNetUnfolderBase]: For 3033394/3033398 co-relation queries the response was YES. [2024-06-04 14:53:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94024 conditions, 7895 events. 4905/7895 cut-off events. For 3033394/3033398 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 51159 event pairs, 870 based on Foata normal form. 4/7898 useless extension candidates. Maximal degree in co-relation 93781. Up to 7155 conditions per place. [2024-06-04 14:53:15,254 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 633 selfloop transitions, 89 changer transitions 0/727 dead transitions. [2024-06-04 14:53:15,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 727 transitions, 10820 flow [2024-06-04 14:53:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:53:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:53:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 14:53:15,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 14:53:15,255 INFO L175 Difference]: Start difference. First operand has 503 places, 703 transitions, 9150 flow. Second operand 9 states and 170 transitions. [2024-06-04 14:53:15,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 727 transitions, 10820 flow [2024-06-04 14:53:23,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 727 transitions, 10591 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-04 14:53:23,374 INFO L231 Difference]: Finished difference. Result has 505 places, 707 transitions, 9280 flow [2024-06-04 14:53:23,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8921, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9280, PETRI_PLACES=505, PETRI_TRANSITIONS=707} [2024-06-04 14:53:23,375 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 460 predicate places. [2024-06-04 14:53:23,375 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 707 transitions, 9280 flow [2024-06-04 14:53:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:23,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:23,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:23,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:53:23,375 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:23,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:23,375 INFO L85 PathProgramCache]: Analyzing trace with hash -179846479, now seen corresponding path program 5 times [2024-06-04 14:53:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816817318] [2024-06-04 14:53:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816817318] [2024-06-04 14:53:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816817318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:24,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867719696] [2024-06-04 14:53:24,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:24,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:24,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:24,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:24,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 707 transitions, 9280 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:53:24,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:24,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:24,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:27,053 INFO L124 PetriNetUnfolderBase]: 4910/7909 cut-off events. [2024-06-04 14:53:27,053 INFO L125 PetriNetUnfolderBase]: For 3055563/3055567 co-relation queries the response was YES. [2024-06-04 14:53:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94805 conditions, 7909 events. 4910/7909 cut-off events. For 3055563/3055567 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 51330 event pairs, 885 based on Foata normal form. 3/7911 useless extension candidates. Maximal degree in co-relation 94561. Up to 7100 conditions per place. [2024-06-04 14:53:27,347 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 612 selfloop transitions, 110 changer transitions 0/727 dead transitions. [2024-06-04 14:53:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 727 transitions, 11575 flow [2024-06-04 14:53:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:53:27,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:53:27,348 INFO L175 Difference]: Start difference. First operand has 505 places, 707 transitions, 9280 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:53:27,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 727 transitions, 11575 flow [2024-06-04 14:53:35,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 727 transitions, 11244 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-04 14:53:35,437 INFO L231 Difference]: Finished difference. Result has 506 places, 710 transitions, 9288 flow [2024-06-04 14:53:35,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8949, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9288, PETRI_PLACES=506, PETRI_TRANSITIONS=710} [2024-06-04 14:53:35,437 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 461 predicate places. [2024-06-04 14:53:35,438 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 710 transitions, 9288 flow [2024-06-04 14:53:35,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:53:35,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:35,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:35,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:53:35,438 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:53:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1405240531, now seen corresponding path program 6 times [2024-06-04 14:53:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071331308] [2024-06-04 14:53:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:53:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071331308] [2024-06-04 14:53:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071331308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:36,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:36,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:53:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471595864] [2024-06-04 14:53:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:53:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:53:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:53:36,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:53:36,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 710 transitions, 9288 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 14:53:36,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:36,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:53:36,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:39,194 INFO L124 PetriNetUnfolderBase]: 4915/7918 cut-off events. [2024-06-04 14:53:39,195 INFO L125 PetriNetUnfolderBase]: For 3088250/3088254 co-relation queries the response was YES. [2024-06-04 14:53:39,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94950 conditions, 7918 events. 4915/7918 cut-off events. For 3088250/3088254 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 51450 event pairs, 885 based on Foata normal form. 3/7920 useless extension candidates. Maximal degree in co-relation 94705. Up to 7106 conditions per place. [2024-06-04 14:53:39,353 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 615 selfloop transitions, 109 changer transitions 0/729 dead transitions. [2024-06-04 14:53:39,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 729 transitions, 11247 flow [2024-06-04 14:53:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:53:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:53:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:53:39,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:53:39,354 INFO L175 Difference]: Start difference. First operand has 506 places, 710 transitions, 9288 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:53:39,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 729 transitions, 11247 flow