./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.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/mix033_tso.oepc.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/mix033_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix033_tso.oepc.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 [2024-06-03 19:35:26,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:35:26,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:35:26,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:35:26,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:35:26,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:35:26,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:35:26,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:35:26,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:35:26,532 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:35:26,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:35:26,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:35:26,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:35:26,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:35:26,533 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:35:26,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:35:26,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:35:26,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:35:26,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:35:26,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:35:26,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:35:26,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:35:26,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:35:26,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:35:26,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:35:26,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:35:26,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:35:26,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:35:26,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:35:26,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:35:26,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:35:26,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:35:26,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:35:26,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:35:26,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:35:26,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:35:26,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:35:26,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:35:26,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:35:26,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:35:26,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:35:26,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:35:26,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:35:26,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:35:26,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:35:26,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:35:26,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:35:26,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:35:26,794 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:35:26,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-03 19:35:27,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:35:28,066 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:35:28,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-03 19:35:28,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261b34c36/aa5ac96f52a141d3972d503c2f601cea/FLAG110254899 [2024-06-03 19:35:28,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261b34c36/aa5ac96f52a141d3972d503c2f601cea [2024-06-03 19:35:28,093 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:35:28,093 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:35:28,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix033_tso.oepc.yml/witness.yml [2024-06-03 19:35:28,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:35:28,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:35:28,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:35:28,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:35:28,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:35:28,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:35:28" (1/2) ... [2024-06-03 19:35:28,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14796606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:35:28, skipping insertion in model container [2024-06-03 19:35:28,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:35:28" (1/2) ... [2024-06-03 19:35:28,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73417857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:35:28, skipping insertion in model container [2024-06-03 19:35:28,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:28" (2/2) ... [2024-06-03 19:35:28,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14796606 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28, skipping insertion in model container [2024-06-03 19:35:28,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:28" (2/2) ... [2024-06-03 19:35:28,277 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:35:28,352 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:35:28,354 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-03 19:35:28,354 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-03 19:35:28,354 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-03 19:35:28,354 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:35:28,354 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-03 19:35:28,392 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:35:28,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:35:28,714 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:35:28,816 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:35:28,845 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:35:28,846 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28 WrapperNode [2024-06-03 19:35:28,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:35:28,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:35:28,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:35:28,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:35:28,853 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 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,880 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 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,912 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-03 19:35:28,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:35:28,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:35:28,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:35:28,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:35:28,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,937 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]. [2024-06-03 19:35:28,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:35:28,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:35:28,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:35:28,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:35:28,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (1/1) ... [2024-06-03 19:35:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:35:28,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:35:28,988 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) [2024-06-03 19:35:29,007 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 [2024-06-03 19:35:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:35:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:35:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:35:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:35:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:35:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:35:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:35:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:35:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:35:29,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:35:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:35:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:35:29,023 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:35:29,156 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:35:29,158 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:35:29,468 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:35:29,469 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:35:29,617 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:35:29,617 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:35:29,618 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:35:29 BoogieIcfgContainer [2024-06-03 19:35:29,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:35:29,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:35:29,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:35:29,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:35:29,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:35:28" (1/4) ... [2024-06-03 19:35:29,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f14666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:35:29, skipping insertion in model container [2024-06-03 19:35:29,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:35:28" (2/4) ... [2024-06-03 19:35:29,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f14666 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:35:29, skipping insertion in model container [2024-06-03 19:35:29,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:35:28" (3/4) ... [2024-06-03 19:35:29,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f14666 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:35:29, skipping insertion in model container [2024-06-03 19:35:29,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:35:29" (4/4) ... [2024-06-03 19:35:29,628 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_tso.oepc.i [2024-06-03 19:35:29,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:35:29,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 19:35:29,642 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:35:29,693 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:35:29,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 45 transitions, 102 flow [2024-06-03 19:35:29,739 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2024-06-03 19:35:29,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:35:29,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:35:29,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 45 transitions, 102 flow [2024-06-03 19:35:29,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 81 flow [2024-06-03 19:35:29,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:35:29,755 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;@48597709, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:35:29,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 19:35:29,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:35:29,758 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:35:29,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:35:29,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:29,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:35:29,759 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)] === [2024-06-03 19:35:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -925057465, now seen corresponding path program 1 times [2024-06-03 19:35:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606123974] [2024-06-03 19:35:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606123974] [2024-06-03 19:35:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606123974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:31,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:35:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848938297] [2024-06-03 19:35:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:31,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:35:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:35:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:35:31,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-03 19:35:31,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:31,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:31,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-03 19:35:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:31,634 INFO L124 PetriNetUnfolderBase]: 1659/2634 cut-off events. [2024-06-03 19:35:31,634 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-03 19:35:31,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5200 conditions, 2634 events. 1659/2634 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13619 event pairs, 1184 based on Foata normal form. 1/2527 useless extension candidates. Maximal degree in co-relation 5185. Up to 2465 conditions per place. [2024-06-03 19:35:31,653 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 35 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-03 19:35:31,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 185 flow [2024-06-03 19:35:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:35:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:35:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-03 19:35:31,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-03 19:35:31,666 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 81 flow. Second operand 3 states and 78 transitions. [2024-06-03 19:35:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 185 flow [2024-06-03 19:35:31,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:31,673 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-06-03 19:35:31,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-03 19:35:31,677 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-06-03 19:35:31,678 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-06-03 19:35:31,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:31,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:31,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:31,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:35:31,679 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)] === [2024-06-03 19:35:31,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash 78054054, now seen corresponding path program 1 times [2024-06-03 19:35:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:31,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135404096] [2024-06-03 19:35:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:32,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135404096] [2024-06-03 19:35:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135404096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:32,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:35:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049266151] [2024-06-03 19:35:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:32,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:35:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:35:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:35:32,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-03 19:35:32,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:32,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:32,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-03 19:35:32,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:32,979 INFO L124 PetriNetUnfolderBase]: 1905/2937 cut-off events. [2024-06-03 19:35:32,979 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-06-03 19:35:32,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6560 conditions, 2937 events. 1905/2937 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14793 event pairs, 1212 based on Foata normal form. 3/2890 useless extension candidates. Maximal degree in co-relation 6545. Up to 2801 conditions per place. [2024-06-03 19:35:32,992 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-03 19:35:32,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 254 flow [2024-06-03 19:35:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:35:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:35:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-03 19:35:32,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-06-03 19:35:32,995 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 97 transitions. [2024-06-03 19:35:32,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 254 flow [2024-06-03 19:35:32,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:35:32,996 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 144 flow [2024-06-03 19:35:32,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-03 19:35:32,997 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2024-06-03 19:35:32,997 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 144 flow [2024-06-03 19:35:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:32,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:32,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:32,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:35:32,998 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)] === [2024-06-03 19:35:32,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1875290072, now seen corresponding path program 1 times [2024-06-03 19:35:32,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:32,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712457123] [2024-06-03 19:35:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:32,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712457123] [2024-06-03 19:35:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712457123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:33,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:35:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336376809] [2024-06-03 19:35:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:35:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:35:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:35:33,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-03 19:35:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-03 19:35:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:34,110 INFO L124 PetriNetUnfolderBase]: 1893/2923 cut-off events. [2024-06-03 19:35:34,110 INFO L125 PetriNetUnfolderBase]: For 1534/1534 co-relation queries the response was YES. [2024-06-03 19:35:34,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 2923 events. 1893/2923 cut-off events. For 1534/1534 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14768 event pairs, 878 based on Foata normal form. 6/2881 useless extension candidates. Maximal degree in co-relation 7188. Up to 2753 conditions per place. [2024-06-03 19:35:34,126 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 51 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-03 19:35:34,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 336 flow [2024-06-03 19:35:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:35:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:35:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-03 19:35:34,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-03 19:35:34,129 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 144 flow. Second operand 5 states and 119 transitions. [2024-06-03 19:35:34,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 336 flow [2024-06-03 19:35:34,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 322 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 19:35:34,132 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 180 flow [2024-06-03 19:35:34,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-03 19:35:34,133 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2024-06-03 19:35:34,133 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 180 flow [2024-06-03 19:35:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:34,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:34,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:35:34,134 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)] === [2024-06-03 19:35:34,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1732555751, now seen corresponding path program 1 times [2024-06-03 19:35:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93029830] [2024-06-03 19:35:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93029830] [2024-06-03 19:35:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93029830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:35,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:35,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201853633] [2024-06-03 19:35:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:35,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-03 19:35:35,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:35,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:35,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-03 19:35:35,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:35,679 INFO L124 PetriNetUnfolderBase]: 1884/2904 cut-off events. [2024-06-03 19:35:35,679 INFO L125 PetriNetUnfolderBase]: For 2854/2854 co-relation queries the response was YES. [2024-06-03 19:35:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 2904 events. 1884/2904 cut-off events. For 2854/2854 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14600 event pairs, 690 based on Foata normal form. 6/2860 useless extension candidates. Maximal degree in co-relation 7806. Up to 2708 conditions per place. [2024-06-03 19:35:35,698 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-03 19:35:35,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 390 flow [2024-06-03 19:35:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-03 19:35:35,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-03 19:35:35,702 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 180 flow. Second operand 6 states and 136 transitions. [2024-06-03 19:35:35,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 390 flow [2024-06-03 19:35:35,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 366 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:35,707 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 199 flow [2024-06-03 19:35:35,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-03 19:35:35,709 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2024-06-03 19:35:35,709 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 199 flow [2024-06-03 19:35:35,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:35,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:35,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:35:35,710 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)] === [2024-06-03 19:35:35,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash 725652736, now seen corresponding path program 1 times [2024-06-03 19:35:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080104] [2024-06-03 19:35:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080104] [2024-06-03 19:35:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:36,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:35:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985317306] [2024-06-03 19:35:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:35:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:35:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:35:36,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-03 19:35:36,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:36,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:36,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-03 19:35:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:37,013 INFO L124 PetriNetUnfolderBase]: 1627/2585 cut-off events. [2024-06-03 19:35:37,013 INFO L125 PetriNetUnfolderBase]: For 3895/3895 co-relation queries the response was YES. [2024-06-03 19:35:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7337 conditions, 2585 events. 1627/2585 cut-off events. For 3895/3895 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13336 event pairs, 814 based on Foata normal form. 2/2519 useless extension candidates. Maximal degree in co-relation 7318. Up to 2407 conditions per place. [2024-06-03 19:35:37,034 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 45 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-06-03 19:35:37,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 349 flow [2024-06-03 19:35:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:35:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:35:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-03 19:35:37,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-03 19:35:37,037 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 199 flow. Second operand 5 states and 102 transitions. [2024-06-03 19:35:37,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 349 flow [2024-06-03 19:35:37,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 316 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 19:35:37,044 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 212 flow [2024-06-03 19:35:37,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-03 19:35:37,047 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-06-03 19:35:37,047 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 212 flow [2024-06-03 19:35:37,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:37,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:37,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:35:37,052 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)] === [2024-06-03 19:35:37,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1020399532, now seen corresponding path program 1 times [2024-06-03 19:35:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161042205] [2024-06-03 19:35:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:37,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161042205] [2024-06-03 19:35:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161042205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147050122] [2024-06-03 19:35:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:37,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:38,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:38,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:38,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:38,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:38,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:38,571 INFO L124 PetriNetUnfolderBase]: 1918/3085 cut-off events. [2024-06-03 19:35:38,571 INFO L125 PetriNetUnfolderBase]: For 6144/6144 co-relation queries the response was YES. [2024-06-03 19:35:38,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9148 conditions, 3085 events. 1918/3085 cut-off events. For 6144/6144 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16203 event pairs, 972 based on Foata normal form. 2/3059 useless extension candidates. Maximal degree in co-relation 9127. Up to 2819 conditions per place. [2024-06-03 19:35:38,594 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-03 19:35:38,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 392 flow [2024-06-03 19:35:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-03 19:35:38,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-03 19:35:38,596 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 212 flow. Second operand 6 states and 115 transitions. [2024-06-03 19:35:38,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 392 flow [2024-06-03 19:35:38,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 370 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:38,601 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 246 flow [2024-06-03 19:35:38,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-06-03 19:35:38,603 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-06-03 19:35:38,603 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 246 flow [2024-06-03 19:35:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:38,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:38,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:35:38,604 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)] === [2024-06-03 19:35:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1171997997, now seen corresponding path program 1 times [2024-06-03 19:35:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57675520] [2024-06-03 19:35:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57675520] [2024-06-03 19:35:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57675520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903244270] [2024-06-03 19:35:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:39,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:39,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:39,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:39,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:39,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:40,052 INFO L124 PetriNetUnfolderBase]: 2094/3286 cut-off events. [2024-06-03 19:35:40,052 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-06-03 19:35:40,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10630 conditions, 3286 events. 2094/3286 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16967 event pairs, 1034 based on Foata normal form. 2/3277 useless extension candidates. Maximal degree in co-relation 10608. Up to 3060 conditions per place. [2024-06-03 19:35:40,070 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-03 19:35:40,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 446 flow [2024-06-03 19:35:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-03 19:35:40,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-03 19:35:40,072 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 246 flow. Second operand 6 states and 118 transitions. [2024-06-03 19:35:40,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 446 flow [2024-06-03 19:35:40,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 414 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-03 19:35:40,076 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 272 flow [2024-06-03 19:35:40,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-06-03 19:35:40,078 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-06-03 19:35:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 272 flow [2024-06-03 19:35:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:40,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:40,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:40,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:35:40,079 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)] === [2024-06-03 19:35:40,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1927780901, now seen corresponding path program 2 times [2024-06-03 19:35:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:40,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567286191] [2024-06-03 19:35:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:41,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567286191] [2024-06-03 19:35:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567286191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:41,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98659129] [2024-06-03 19:35:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:41,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:41,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:41,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:41,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:41,699 INFO L124 PetriNetUnfolderBase]: 2089/3281 cut-off events. [2024-06-03 19:35:41,699 INFO L125 PetriNetUnfolderBase]: For 12642/12654 co-relation queries the response was YES. [2024-06-03 19:35:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11318 conditions, 3281 events. 2089/3281 cut-off events. For 12642/12654 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16973 event pairs, 1041 based on Foata normal form. 10/3278 useless extension candidates. Maximal degree in co-relation 11295. Up to 3035 conditions per place. [2024-06-03 19:35:41,715 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-03 19:35:41,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 470 flow [2024-06-03 19:35:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:35:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:35:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-03 19:35:41,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-03 19:35:41,719 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 272 flow. Second operand 6 states and 117 transitions. [2024-06-03 19:35:41,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 470 flow [2024-06-03 19:35:41,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 436 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 19:35:41,723 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 312 flow [2024-06-03 19:35:41,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-03 19:35:41,725 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-06-03 19:35:41,725 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 312 flow [2024-06-03 19:35:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-06-03 19:35:41,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:41,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:35:41,726 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)] === [2024-06-03 19:35:41,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1567615647, now seen corresponding path program 1 times [2024-06-03 19:35:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:41,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8519289] [2024-06-03 19:35:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:41,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8519289] [2024-06-03 19:35:42,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8519289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:42,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:42,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:42,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277351064] [2024-06-03 19:35:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:42,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:42,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:42,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:42,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 312 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) [2024-06-03 19:35:42,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:42,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:42,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:43,294 INFO L124 PetriNetUnfolderBase]: 1919/3114 cut-off events. [2024-06-03 19:35:43,294 INFO L125 PetriNetUnfolderBase]: For 13547/13547 co-relation queries the response was YES. [2024-06-03 19:35:43,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11097 conditions, 3114 events. 1919/3114 cut-off events. For 13547/13547 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16548 event pairs, 936 based on Foata normal form. 2/3104 useless extension candidates. Maximal degree in co-relation 11073. Up to 2812 conditions per place. [2024-06-03 19:35:43,311 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 60 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-03 19:35:43,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 536 flow [2024-06-03 19:35:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-03 19:35:43,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-03 19:35:43,312 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 312 flow. Second operand 7 states and 132 transitions. [2024-06-03 19:35:43,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 536 flow [2024-06-03 19:35:43,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 486 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:35:43,319 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 332 flow [2024-06-03 19:35:43,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-03 19:35:43,321 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-06-03 19:35:43,321 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 332 flow [2024-06-03 19:35:43,321 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) [2024-06-03 19:35:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:43,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:35:43,321 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)] === [2024-06-03 19:35:43,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1173948305, now seen corresponding path program 1 times [2024-06-03 19:35:43,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:43,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760070406] [2024-06-03 19:35:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760070406] [2024-06-03 19:35:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760070406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:44,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:44,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288466582] [2024-06-03 19:35:44,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:44,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:44,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 332 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) [2024-06-03 19:35:44,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:44,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:44,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:44,869 INFO L124 PetriNetUnfolderBase]: 2106/3320 cut-off events. [2024-06-03 19:35:44,869 INFO L125 PetriNetUnfolderBase]: For 19477/19477 co-relation queries the response was YES. [2024-06-03 19:35:44,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12827 conditions, 3320 events. 2106/3320 cut-off events. For 19477/19477 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17221 event pairs, 829 based on Foata normal form. 4/3311 useless extension candidates. Maximal degree in co-relation 12802. Up to 3039 conditions per place. [2024-06-03 19:35:44,887 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 69 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-06-03 19:35:44,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 612 flow [2024-06-03 19:35:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-03 19:35:44,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-03 19:35:44,889 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 332 flow. Second operand 7 states and 140 transitions. [2024-06-03 19:35:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 612 flow [2024-06-03 19:35:44,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 566 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:44,894 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 382 flow [2024-06-03 19:35:44,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-03 19:35:44,895 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-06-03 19:35:44,895 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 382 flow [2024-06-03 19:35:44,895 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) [2024-06-03 19:35:44,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:44,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:35:44,896 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)] === [2024-06-03 19:35:44,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash -374762293, now seen corresponding path program 2 times [2024-06-03 19:35:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:44,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418014372] [2024-06-03 19:35:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:44,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:45,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:45,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418014372] [2024-06-03 19:35:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418014372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:45,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873794083] [2024-06-03 19:35:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:45,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 382 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) [2024-06-03 19:35:45,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:45,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:45,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:46,569 INFO L124 PetriNetUnfolderBase]: 2156/3378 cut-off events. [2024-06-03 19:35:46,569 INFO L125 PetriNetUnfolderBase]: For 24645/24645 co-relation queries the response was YES. [2024-06-03 19:35:46,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14118 conditions, 3378 events. 2156/3378 cut-off events. For 24645/24645 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17416 event pairs, 823 based on Foata normal form. 4/3357 useless extension candidates. Maximal degree in co-relation 14091. Up to 3066 conditions per place. [2024-06-03 19:35:46,587 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 68 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-03 19:35:46,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 750 flow [2024-06-03 19:35:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-03 19:35:46,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-03 19:35:46,588 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 382 flow. Second operand 7 states and 142 transitions. [2024-06-03 19:35:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 750 flow [2024-06-03 19:35:46,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 706 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:46,596 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 476 flow [2024-06-03 19:35:46,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-06-03 19:35:46,596 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-06-03 19:35:46,596 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 476 flow [2024-06-03 19:35:46,597 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) [2024-06-03 19:35:46,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:46,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:35:46,597 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)] === [2024-06-03 19:35:46,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1174068461, now seen corresponding path program 1 times [2024-06-03 19:35:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97776983] [2024-06-03 19:35:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:46,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97776983] [2024-06-03 19:35:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97776983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:47,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:47,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:47,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537148341] [2024-06-03 19:35:47,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:47,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:35:47,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 476 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:47,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:47,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:35:47,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:48,217 INFO L124 PetriNetUnfolderBase]: 2287/3519 cut-off events. [2024-06-03 19:35:48,217 INFO L125 PetriNetUnfolderBase]: For 29387/29387 co-relation queries the response was YES. [2024-06-03 19:35:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15301 conditions, 3519 events. 2287/3519 cut-off events. For 29387/29387 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17623 event pairs, 875 based on Foata normal form. 2/3507 useless extension candidates. Maximal degree in co-relation 15273. Up to 3332 conditions per place. [2024-06-03 19:35:48,238 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 79 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-03 19:35:48,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 754 flow [2024-06-03 19:35:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-03 19:35:48,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-03 19:35:48,239 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 476 flow. Second operand 7 states and 129 transitions. [2024-06-03 19:35:48,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 754 flow [2024-06-03 19:35:48,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 708 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:48,254 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 508 flow [2024-06-03 19:35:48,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-06-03 19:35:48,254 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-06-03 19:35:48,254 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 508 flow [2024-06-03 19:35:48,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:48,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:48,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:35:48,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:35:48,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1351437131, now seen corresponding path program 2 times [2024-06-03 19:35:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866311660] [2024-06-03 19:35:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:49,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:49,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866311660] [2024-06-03 19:35:49,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866311660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:49,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:49,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381386892] [2024-06-03 19:35:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:49,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:35:49,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:49,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:49,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:35:49,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:49,810 INFO L124 PetriNetUnfolderBase]: 2298/3537 cut-off events. [2024-06-03 19:35:49,810 INFO L125 PetriNetUnfolderBase]: For 34053/34068 co-relation queries the response was YES. [2024-06-03 19:35:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 3537 events. 2298/3537 cut-off events. For 34053/34068 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17750 event pairs, 882 based on Foata normal form. 12/3530 useless extension candidates. Maximal degree in co-relation 16049. Up to 3301 conditions per place. [2024-06-03 19:35:49,832 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 71 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-03 19:35:49,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 888 flow [2024-06-03 19:35:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-03 19:35:49,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158730158730159 [2024-06-03 19:35:49,834 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 508 flow. Second operand 7 states and 131 transitions. [2024-06-03 19:35:49,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 888 flow [2024-06-03 19:35:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 834 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:49,846 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 606 flow [2024-06-03 19:35:49,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-06-03 19:35:49,847 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2024-06-03 19:35:49,847 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 606 flow [2024-06-03 19:35:49,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:49,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:49,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:35:49,848 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)] === [2024-06-03 19:35:49,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1351199981, now seen corresponding path program 3 times [2024-06-03 19:35:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393166036] [2024-06-03 19:35:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:50,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:50,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393166036] [2024-06-03 19:35:50,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393166036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:50,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427803164] [2024-06-03 19:35:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:50,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:50,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:35:50,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 606 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:50,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:35:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:51,377 INFO L124 PetriNetUnfolderBase]: 2293/3530 cut-off events. [2024-06-03 19:35:51,387 INFO L125 PetriNetUnfolderBase]: For 39412/39427 co-relation queries the response was YES. [2024-06-03 19:35:51,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16739 conditions, 3530 events. 2293/3530 cut-off events. For 39412/39427 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17699 event pairs, 882 based on Foata normal form. 12/3523 useless extension candidates. Maximal degree in co-relation 16708. Up to 3296 conditions per place. [2024-06-03 19:35:51,420 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 70 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-03 19:35:51,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 846 flow [2024-06-03 19:35:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-03 19:35:51,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-03 19:35:51,422 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 606 flow. Second operand 7 states and 130 transitions. [2024-06-03 19:35:51,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 846 flow [2024-06-03 19:35:51,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 766 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:51,446 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 586 flow [2024-06-03 19:35:51,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-06-03 19:35:51,447 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2024-06-03 19:35:51,447 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 586 flow [2024-06-03 19:35:51,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:51,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:51,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:51,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:35:51,448 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)] === [2024-06-03 19:35:51,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1351199795, now seen corresponding path program 3 times [2024-06-03 19:35:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417281220] [2024-06-03 19:35:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:52,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:52,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417281220] [2024-06-03 19:35:52,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417281220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:35:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880715972] [2024-06-03 19:35:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:35:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:35:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:35:52,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:52,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 586 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) [2024-06-03 19:35:52,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:53,075 INFO L124 PetriNetUnfolderBase]: 2156/3397 cut-off events. [2024-06-03 19:35:53,075 INFO L125 PetriNetUnfolderBase]: For 42754/42763 co-relation queries the response was YES. [2024-06-03 19:35:53,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16319 conditions, 3397 events. 2156/3397 cut-off events. For 42754/42763 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17564 event pairs, 818 based on Foata normal form. 8/3385 useless extension candidates. Maximal degree in co-relation 16286. Up to 3026 conditions per place. [2024-06-03 19:35:53,142 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 67 selfloop transitions, 31 changer transitions 0/108 dead transitions. [2024-06-03 19:35:53,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 946 flow [2024-06-03 19:35:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-03 19:35:53,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-03 19:35:53,144 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 586 flow. Second operand 7 states and 141 transitions. [2024-06-03 19:35:53,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 946 flow [2024-06-03 19:35:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 876 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:53,167 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 640 flow [2024-06-03 19:35:53,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-06-03 19:35:53,168 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-06-03 19:35:53,168 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 640 flow [2024-06-03 19:35:53,169 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) [2024-06-03 19:35:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:53,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:35:53,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:35:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 681108354, now seen corresponding path program 1 times [2024-06-03 19:35:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182033735] [2024-06-03 19:35:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182033735] [2024-06-03 19:35:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182033735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:35:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742415760] [2024-06-03 19:35:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:35:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:35:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:35:54,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:54,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 640 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:54,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:54,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:54,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:54,805 INFO L124 PetriNetUnfolderBase]: 2166/3521 cut-off events. [2024-06-03 19:35:54,805 INFO L125 PetriNetUnfolderBase]: For 46814/46814 co-relation queries the response was YES. [2024-06-03 19:35:54,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17136 conditions, 3521 events. 2166/3521 cut-off events. For 46814/46814 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18805 event pairs, 834 based on Foata normal form. 1/3507 useless extension candidates. Maximal degree in co-relation 17102. Up to 3173 conditions per place. [2024-06-03 19:35:54,824 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 78 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-06-03 19:35:54,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 854 flow [2024-06-03 19:35:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:35:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:35:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-03 19:35:54,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2024-06-03 19:35:54,826 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 640 flow. Second operand 5 states and 94 transitions. [2024-06-03 19:35:54,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 854 flow [2024-06-03 19:35:54,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 754 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-03 19:35:54,852 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 590 flow [2024-06-03 19:35:54,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-06-03 19:35:54,852 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-06-03 19:35:54,852 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 590 flow [2024-06-03 19:35:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:54,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:54,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:35:54,853 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)] === [2024-06-03 19:35:54,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1012420494, now seen corresponding path program 1 times [2024-06-03 19:35:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095479683] [2024-06-03 19:35:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:56,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095479683] [2024-06-03 19:35:56,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095479683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:56,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:56,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069025080] [2024-06-03 19:35:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:56,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:56,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:56,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:35:56,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 590 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) [2024-06-03 19:35:56,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:56,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:35:56,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:56,867 INFO L124 PetriNetUnfolderBase]: 2150/3380 cut-off events. [2024-06-03 19:35:56,867 INFO L125 PetriNetUnfolderBase]: For 50849/50849 co-relation queries the response was YES. [2024-06-03 19:35:56,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 3380 events. 2150/3380 cut-off events. For 50849/50849 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17417 event pairs, 801 based on Foata normal form. 2/3380 useless extension candidates. Maximal degree in co-relation 17321. Up to 3082 conditions per place. [2024-06-03 19:35:56,884 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 85 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2024-06-03 19:35:56,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 866 flow [2024-06-03 19:35:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:35:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:35:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-03 19:35:56,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-03 19:35:56,886 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 590 flow. Second operand 7 states and 140 transitions. [2024-06-03 19:35:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 866 flow [2024-06-03 19:35:56,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 816 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-03 19:35:56,908 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 590 flow [2024-06-03 19:35:56,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-03 19:35:56,908 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-06-03 19:35:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 590 flow [2024-06-03 19:35:56,909 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) [2024-06-03 19:35:56,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:56,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:35:56,909 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)] === [2024-06-03 19:35:56,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1012330129, now seen corresponding path program 1 times [2024-06-03 19:35:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252355927] [2024-06-03 19:35:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:57,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252355927] [2024-06-03 19:35:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252355927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:57,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128483854] [2024-06-03 19:35:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:57,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:35:57,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:57,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:57,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:35:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:35:58,622 INFO L124 PetriNetUnfolderBase]: 2297/3536 cut-off events. [2024-06-03 19:35:58,622 INFO L125 PetriNetUnfolderBase]: For 56533/56533 co-relation queries the response was YES. [2024-06-03 19:35:58,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18507 conditions, 3536 events. 2297/3536 cut-off events. For 56533/56533 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17724 event pairs, 845 based on Foata normal form. 4/3538 useless extension candidates. Maximal degree in co-relation 18471. Up to 3295 conditions per place. [2024-06-03 19:35:58,642 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 97 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-03 19:35:58,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 954 flow [2024-06-03 19:35:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:35:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:35:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-03 19:35:58,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-03 19:35:58,643 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 590 flow. Second operand 8 states and 151 transitions. [2024-06-03 19:35:58,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 954 flow [2024-06-03 19:35:58,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 908 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 19:35:58,665 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 646 flow [2024-06-03 19:35:58,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=646, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2024-06-03 19:35:58,665 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-06-03 19:35:58,665 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 646 flow [2024-06-03 19:35:58,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:58,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:35:58,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:35:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:35:58,666 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)] === [2024-06-03 19:35:58,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:35:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1008605479, now seen corresponding path program 2 times [2024-06-03 19:35:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:35:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017807918] [2024-06-03 19:35:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:35:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:35:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:35:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:35:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:35:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017807918] [2024-06-03 19:35:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017807918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:35:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:35:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:35:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309450584] [2024-06-03 19:35:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:35:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:35:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:35:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:35:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:35:59,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:35:59,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 646 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:35:59,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:35:59,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:35:59,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:00,332 INFO L124 PetriNetUnfolderBase]: 2351/3614 cut-off events. [2024-06-03 19:36:00,333 INFO L125 PetriNetUnfolderBase]: For 65109/65109 co-relation queries the response was YES. [2024-06-03 19:36:00,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19775 conditions, 3614 events. 2351/3614 cut-off events. For 65109/65109 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18077 event pairs, 823 based on Foata normal form. 4/3616 useless extension candidates. Maximal degree in co-relation 19738. Up to 3276 conditions per place. [2024-06-03 19:36:00,354 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 88 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-06-03 19:36:00,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1152 flow [2024-06-03 19:36:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-03 19:36:00,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-03 19:36:00,355 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 646 flow. Second operand 8 states and 154 transitions. [2024-06-03 19:36:00,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1152 flow [2024-06-03 19:36:00,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 1074 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:00,383 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 760 flow [2024-06-03 19:36:00,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2024-06-03 19:36:00,384 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-06-03 19:36:00,384 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 760 flow [2024-06-03 19:36:00,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:00,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:00,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:00,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:36:00,384 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)] === [2024-06-03 19:36:00,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1008611059, now seen corresponding path program 3 times [2024-06-03 19:36:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357624310] [2024-06-03 19:36:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357624310] [2024-06-03 19:36:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357624310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:01,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:01,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681263698] [2024-06-03 19:36:01,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:01,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:01,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 760 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:01,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:01,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:01,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:02,118 INFO L124 PetriNetUnfolderBase]: 2357/3618 cut-off events. [2024-06-03 19:36:02,118 INFO L125 PetriNetUnfolderBase]: For 73491/73491 co-relation queries the response was YES. [2024-06-03 19:36:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20513 conditions, 3618 events. 2357/3618 cut-off events. For 73491/73491 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18076 event pairs, 837 based on Foata normal form. 4/3620 useless extension candidates. Maximal degree in co-relation 20475. Up to 3285 conditions per place. [2024-06-03 19:36:02,138 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 90 selfloop transitions, 36 changer transitions 0/131 dead transitions. [2024-06-03 19:36:02,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1228 flow [2024-06-03 19:36:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-03 19:36:02,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-03 19:36:02,139 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 760 flow. Second operand 8 states and 155 transitions. [2024-06-03 19:36:02,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1228 flow [2024-06-03 19:36:02,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1144 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:02,169 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 816 flow [2024-06-03 19:36:02,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=816, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2024-06-03 19:36:02,170 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-06-03 19:36:02,170 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 816 flow [2024-06-03 19:36:02,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:02,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:02,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:02,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:36:02,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:02,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1008605262, now seen corresponding path program 1 times [2024-06-03 19:36:02,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:02,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572893403] [2024-06-03 19:36:02,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572893403] [2024-06-03 19:36:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572893403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:03,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:03,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780645324] [2024-06-03 19:36:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:03,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:03,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 816 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:03,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:03,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:03,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:03,764 INFO L124 PetriNetUnfolderBase]: 2368/3643 cut-off events. [2024-06-03 19:36:03,764 INFO L125 PetriNetUnfolderBase]: For 78933/78933 co-relation queries the response was YES. [2024-06-03 19:36:03,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20955 conditions, 3643 events. 2368/3643 cut-off events. For 78933/78933 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18253 event pairs, 824 based on Foata normal form. 2/3643 useless extension candidates. Maximal degree in co-relation 20915. Up to 3442 conditions per place. [2024-06-03 19:36:03,784 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 107 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-06-03 19:36:03,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 129 transitions, 1180 flow [2024-06-03 19:36:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-03 19:36:03,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-03 19:36:03,786 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 816 flow. Second operand 8 states and 145 transitions. [2024-06-03 19:36:03,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 129 transitions, 1180 flow [2024-06-03 19:36:03,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 1086 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:03,820 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 820 flow [2024-06-03 19:36:03,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=820, PETRI_PLACES=98, PETRI_TRANSITIONS=103} [2024-06-03 19:36:03,820 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-06-03 19:36:03,821 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 820 flow [2024-06-03 19:36:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:03,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:03,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:36:03,821 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)] === [2024-06-03 19:36:03,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:03,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1710921376, now seen corresponding path program 2 times [2024-06-03 19:36:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:03,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812169861] [2024-06-03 19:36:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:03,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:04,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812169861] [2024-06-03 19:36:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812169861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:04,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948895261] [2024-06-03 19:36:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:04,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:04,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:04,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 820 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:04,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:04,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:04,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:05,462 INFO L124 PetriNetUnfolderBase]: 2395/3689 cut-off events. [2024-06-03 19:36:05,462 INFO L125 PetriNetUnfolderBase]: For 87118/87133 co-relation queries the response was YES. [2024-06-03 19:36:05,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21777 conditions, 3689 events. 2395/3689 cut-off events. For 87118/87133 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18575 event pairs, 831 based on Foata normal form. 12/3697 useless extension candidates. Maximal degree in co-relation 21736. Up to 3396 conditions per place. [2024-06-03 19:36:05,486 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 95 selfloop transitions, 39 changer transitions 0/139 dead transitions. [2024-06-03 19:36:05,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 1486 flow [2024-06-03 19:36:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-03 19:36:05,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-03 19:36:05,487 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 820 flow. Second operand 8 states and 151 transitions. [2024-06-03 19:36:05,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 1486 flow [2024-06-03 19:36:05,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1412 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:05,528 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1006 flow [2024-06-03 19:36:05,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1006, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2024-06-03 19:36:05,529 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2024-06-03 19:36:05,529 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1006 flow [2024-06-03 19:36:05,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:05,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:05,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:36:05,529 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)] === [2024-06-03 19:36:05,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1473931021, now seen corresponding path program 4 times [2024-06-03 19:36:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542788357] [2024-06-03 19:36:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542788357] [2024-06-03 19:36:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542788357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:06,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:06,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107182252] [2024-06-03 19:36:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:06,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:06,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:06,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 1006 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:06,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:06,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:07,264 INFO L124 PetriNetUnfolderBase]: 2417/3728 cut-off events. [2024-06-03 19:36:07,264 INFO L125 PetriNetUnfolderBase]: For 96930/96939 co-relation queries the response was YES. [2024-06-03 19:36:07,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22735 conditions, 3728 events. 2417/3728 cut-off events. For 96930/96939 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18739 event pairs, 821 based on Foata normal form. 8/3729 useless extension candidates. Maximal degree in co-relation 22693. Up to 3257 conditions per place. [2024-06-03 19:36:07,288 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 84 selfloop transitions, 57 changer transitions 0/146 dead transitions. [2024-06-03 19:36:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 1576 flow [2024-06-03 19:36:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-03 19:36:07,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-03 19:36:07,290 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1006 flow. Second operand 8 states and 154 transitions. [2024-06-03 19:36:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 1576 flow [2024-06-03 19:36:07,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 146 transitions, 1502 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-03 19:36:07,395 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 1188 flow [2024-06-03 19:36:07,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2024-06-03 19:36:07,395 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2024-06-03 19:36:07,395 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 1188 flow [2024-06-03 19:36:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:07,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:07,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:36:07,396 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)] === [2024-06-03 19:36:07,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1062478119, now seen corresponding path program 5 times [2024-06-03 19:36:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615818712] [2024-06-03 19:36:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:08,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615818712] [2024-06-03 19:36:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615818712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:08,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846974947] [2024-06-03 19:36:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:08,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:08,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:08,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:08,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:08,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:08,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:08,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:09,061 INFO L124 PetriNetUnfolderBase]: 2439/3759 cut-off events. [2024-06-03 19:36:09,062 INFO L125 PetriNetUnfolderBase]: For 106910/106919 co-relation queries the response was YES. [2024-06-03 19:36:09,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23857 conditions, 3759 events. 2439/3759 cut-off events. For 106910/106919 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18859 event pairs, 836 based on Foata normal form. 8/3760 useless extension candidates. Maximal degree in co-relation 23813. Up to 3276 conditions per place. [2024-06-03 19:36:09,085 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 89 selfloop transitions, 57 changer transitions 0/151 dead transitions. [2024-06-03 19:36:09,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 151 transitions, 1808 flow [2024-06-03 19:36:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-03 19:36:09,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-03 19:36:09,086 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 1188 flow. Second operand 8 states and 157 transitions. [2024-06-03 19:36:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 151 transitions, 1808 flow [2024-06-03 19:36:09,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 1704 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:09,160 INFO L231 Difference]: Finished difference. Result has 109 places, 121 transitions, 1276 flow [2024-06-03 19:36:09,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=109, PETRI_TRANSITIONS=121} [2024-06-03 19:36:09,160 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-06-03 19:36:09,160 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 121 transitions, 1276 flow [2024-06-03 19:36:09,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:09,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:09,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:09,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:36:09,161 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)] === [2024-06-03 19:36:09,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1054853762, now seen corresponding path program 3 times [2024-06-03 19:36:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50793862] [2024-06-03 19:36:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50793862] [2024-06-03 19:36:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50793862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645401172] [2024-06-03 19:36:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:10,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:10,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:10,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 121 transitions, 1276 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:10,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:10,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:10,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:10,897 INFO L124 PetriNetUnfolderBase]: 2434/3750 cut-off events. [2024-06-03 19:36:10,897 INFO L125 PetriNetUnfolderBase]: For 111939/111954 co-relation queries the response was YES. [2024-06-03 19:36:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 3750 events. 2434/3750 cut-off events. For 111939/111954 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18869 event pairs, 830 based on Foata normal form. 12/3758 useless extension candidates. Maximal degree in co-relation 24125. Up to 3455 conditions per place. [2024-06-03 19:36:10,923 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 100 selfloop transitions, 41 changer transitions 0/146 dead transitions. [2024-06-03 19:36:10,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 146 transitions, 1714 flow [2024-06-03 19:36:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-03 19:36:10,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:36:10,937 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 1276 flow. Second operand 8 states and 148 transitions. [2024-06-03 19:36:10,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 146 transitions, 1714 flow [2024-06-03 19:36:11,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 146 transitions, 1508 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:11,006 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 1160 flow [2024-06-03 19:36:11,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1160, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2024-06-03 19:36:11,006 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2024-06-03 19:36:11,006 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 1160 flow [2024-06-03 19:36:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:11,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:11,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:36:11,007 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)] === [2024-06-03 19:36:11,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1062472322, now seen corresponding path program 4 times [2024-06-03 19:36:11,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:11,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460340271] [2024-06-03 19:36:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:11,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460340271] [2024-06-03 19:36:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460340271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:12,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:12,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:12,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734567690] [2024-06-03 19:36:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:12,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:12,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:12,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:12,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:12,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:12,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 1160 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:12,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:12,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:12,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:12,645 INFO L124 PetriNetUnfolderBase]: 2429/3743 cut-off events. [2024-06-03 19:36:12,645 INFO L125 PetriNetUnfolderBase]: For 117162/117177 co-relation queries the response was YES. [2024-06-03 19:36:12,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24039 conditions, 3743 events. 2429/3743 cut-off events. For 117162/117177 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18869 event pairs, 830 based on Foata normal form. 12/3751 useless extension candidates. Maximal degree in co-relation 23992. Up to 3450 conditions per place. [2024-06-03 19:36:12,669 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 101 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-03 19:36:12,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 144 transitions, 1496 flow [2024-06-03 19:36:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-03 19:36:12,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:36:12,670 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 1160 flow. Second operand 8 states and 148 transitions. [2024-06-03 19:36:12,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 144 transitions, 1496 flow [2024-06-03 19:36:12,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 144 transitions, 1384 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:12,751 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 1132 flow [2024-06-03 19:36:12,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1132, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-06-03 19:36:12,752 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-06-03 19:36:12,752 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 1132 flow [2024-06-03 19:36:12,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:12,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:12,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:36:12,752 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1062472539, now seen corresponding path program 6 times [2024-06-03 19:36:12,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:12,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122318992] [2024-06-03 19:36:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:13,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122318992] [2024-06-03 19:36:13,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122318992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:13,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:13,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:36:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533107054] [2024-06-03 19:36:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:13,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:36:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:36:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:36:13,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:13,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 1132 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:13,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:13,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:13,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:14,374 INFO L124 PetriNetUnfolderBase]: 2419/3731 cut-off events. [2024-06-03 19:36:14,374 INFO L125 PetriNetUnfolderBase]: For 123981/123990 co-relation queries the response was YES. [2024-06-03 19:36:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24115 conditions, 3731 events. 2419/3731 cut-off events. For 123981/123990 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18736 event pairs, 834 based on Foata normal form. 8/3732 useless extension candidates. Maximal degree in co-relation 24067. Up to 3254 conditions per place. [2024-06-03 19:36:14,400 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 89 selfloop transitions, 56 changer transitions 0/150 dead transitions. [2024-06-03 19:36:14,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 150 transitions, 1602 flow [2024-06-03 19:36:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-03 19:36:14,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-03 19:36:14,401 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 1132 flow. Second operand 8 states and 157 transitions. [2024-06-03 19:36:14,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 150 transitions, 1602 flow [2024-06-03 19:36:14,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 150 transitions, 1414 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-03 19:36:14,479 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 1064 flow [2024-06-03 19:36:14,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1064, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2024-06-03 19:36:14,479 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-06-03 19:36:14,480 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 1064 flow [2024-06-03 19:36:14,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:14,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:14,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:14,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:36:14,480 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)] === [2024-06-03 19:36:14,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1054843842, now seen corresponding path program 1 times [2024-06-03 19:36:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:14,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252216664] [2024-06-03 19:36:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252216664] [2024-06-03 19:36:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252216664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:15,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675768574] [2024-06-03 19:36:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:15,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:15,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:15,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 1064 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:15,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:15,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:15,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:16,487 INFO L124 PetriNetUnfolderBase]: 2436/3856 cut-off events. [2024-06-03 19:36:16,487 INFO L125 PetriNetUnfolderBase]: For 124979/124979 co-relation queries the response was YES. [2024-06-03 19:36:16,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23813 conditions, 3856 events. 2436/3856 cut-off events. For 124979/124979 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19929 event pairs, 813 based on Foata normal form. 2/3838 useless extension candidates. Maximal degree in co-relation 23765. Up to 3546 conditions per place. [2024-06-03 19:36:16,559 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 129 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2024-06-03 19:36:16,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 1495 flow [2024-06-03 19:36:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-03 19:36:16,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39012345679012345 [2024-06-03 19:36:16,560 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 1064 flow. Second operand 9 states and 158 transitions. [2024-06-03 19:36:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 1495 flow [2024-06-03 19:36:16,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 1339 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:36:16,647 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 1033 flow [2024-06-03 19:36:16,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1033, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2024-06-03 19:36:16,648 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-06-03 19:36:16,648 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 1033 flow [2024-06-03 19:36:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:16,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:16,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:16,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:36:16,649 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -402481432, now seen corresponding path program 1 times [2024-06-03 19:36:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010076580] [2024-06-03 19:36:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:17,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:17,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010076580] [2024-06-03 19:36:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010076580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:17,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:17,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:36:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708429810] [2024-06-03 19:36:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:36:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:36:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:36:17,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:17,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 1033 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:17,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:17,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:17,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:18,403 INFO L124 PetriNetUnfolderBase]: 2630/4084 cut-off events. [2024-06-03 19:36:18,403 INFO L125 PetriNetUnfolderBase]: For 153060/153060 co-relation queries the response was YES. [2024-06-03 19:36:18,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26495 conditions, 4084 events. 2630/4084 cut-off events. For 153060/153060 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20806 event pairs, 920 based on Foata normal form. 1/4083 useless extension candidates. Maximal degree in co-relation 26445. Up to 3815 conditions per place. [2024-06-03 19:36:18,429 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 112 selfloop transitions, 11 changer transitions 0/139 dead transitions. [2024-06-03 19:36:18,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 1329 flow [2024-06-03 19:36:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:36:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:36:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-03 19:36:18,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-03 19:36:18,430 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 1033 flow. Second operand 6 states and 103 transitions. [2024-06-03 19:36:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 1329 flow [2024-06-03 19:36:18,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 139 transitions, 1249 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:18,537 INFO L231 Difference]: Finished difference. Result has 115 places, 130 transitions, 1015 flow [2024-06-03 19:36:18,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1015, PETRI_PLACES=115, PETRI_TRANSITIONS=130} [2024-06-03 19:36:18,538 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-06-03 19:36:18,538 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 130 transitions, 1015 flow [2024-06-03 19:36:18,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:18,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:18,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:18,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:36:18,538 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)] === [2024-06-03 19:36:18,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1320323620, now seen corresponding path program 1 times [2024-06-03 19:36:18,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:18,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241053875] [2024-06-03 19:36:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:18,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241053875] [2024-06-03 19:36:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241053875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:19,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:19,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467064270] [2024-06-03 19:36:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:19,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:19,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 130 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:19,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:19,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:19,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:20,690 INFO L124 PetriNetUnfolderBase]: 2670/4157 cut-off events. [2024-06-03 19:36:20,690 INFO L125 PetriNetUnfolderBase]: For 182411/182427 co-relation queries the response was YES. [2024-06-03 19:36:20,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28775 conditions, 4157 events. 2670/4157 cut-off events. For 182411/182427 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21862 event pairs, 927 based on Foata normal form. 8/4151 useless extension candidates. Maximal degree in co-relation 28724. Up to 3730 conditions per place. [2024-06-03 19:36:20,722 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 130 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-03 19:36:20,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 175 transitions, 1573 flow [2024-06-03 19:36:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-03 19:36:20,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-03 19:36:20,724 INFO L175 Difference]: Start difference. First operand has 115 places, 130 transitions, 1015 flow. Second operand 9 states and 170 transitions. [2024-06-03 19:36:20,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 175 transitions, 1573 flow [2024-06-03 19:36:20,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1531 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:20,849 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 1220 flow [2024-06-03 19:36:20,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1220, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2024-06-03 19:36:20,850 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-06-03 19:36:20,850 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 1220 flow [2024-06-03 19:36:20,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:20,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:20,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:20,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:36:20,850 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:20,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash -846002972, now seen corresponding path program 2 times [2024-06-03 19:36:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:20,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232300510] [2024-06-03 19:36:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:21,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232300510] [2024-06-03 19:36:21,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232300510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:21,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:21,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:21,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004376602] [2024-06-03 19:36:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:22,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:22,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:22,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:22,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:22,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:22,818 INFO L124 PetriNetUnfolderBase]: 2765/4306 cut-off events. [2024-06-03 19:36:22,818 INFO L125 PetriNetUnfolderBase]: For 194940/194964 co-relation queries the response was YES. [2024-06-03 19:36:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30403 conditions, 4306 events. 2765/4306 cut-off events. For 194940/194964 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 22754 event pairs, 929 based on Foata normal form. 18/4316 useless extension candidates. Maximal degree in co-relation 30347. Up to 3831 conditions per place. [2024-06-03 19:36:22,849 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 138 selfloop transitions, 43 changer transitions 0/200 dead transitions. [2024-06-03 19:36:22,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 200 transitions, 1946 flow [2024-06-03 19:36:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-03 19:36:22,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-03 19:36:22,851 INFO L175 Difference]: Start difference. First operand has 124 places, 145 transitions, 1220 flow. Second operand 9 states and 176 transitions. [2024-06-03 19:36:22,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 200 transitions, 1946 flow [2024-06-03 19:36:23,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 200 transitions, 1812 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-03 19:36:23,019 INFO L231 Difference]: Finished difference. Result has 133 places, 165 transitions, 1488 flow [2024-06-03 19:36:23,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=133, PETRI_TRANSITIONS=165} [2024-06-03 19:36:23,019 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2024-06-03 19:36:23,019 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 165 transitions, 1488 flow [2024-06-03 19:36:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:23,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:23,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:23,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:36:23,020 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:23,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1477221296, now seen corresponding path program 3 times [2024-06-03 19:36:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731407026] [2024-06-03 19:36:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731407026] [2024-06-03 19:36:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731407026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:24,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466384462] [2024-06-03 19:36:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:24,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:24,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 165 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:24,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:24,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:24,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:25,080 INFO L124 PetriNetUnfolderBase]: 2879/4488 cut-off events. [2024-06-03 19:36:25,081 INFO L125 PetriNetUnfolderBase]: For 209158/209178 co-relation queries the response was YES. [2024-06-03 19:36:25,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32063 conditions, 4488 events. 2879/4488 cut-off events. For 209158/209178 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 23862 event pairs, 899 based on Foata normal form. 14/4494 useless extension candidates. Maximal degree in co-relation 32003. Up to 3964 conditions per place. [2024-06-03 19:36:25,116 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 147 selfloop transitions, 61 changer transitions 0/227 dead transitions. [2024-06-03 19:36:25,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 227 transitions, 2401 flow [2024-06-03 19:36:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-03 19:36:25,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-03 19:36:25,117 INFO L175 Difference]: Start difference. First operand has 133 places, 165 transitions, 1488 flow. Second operand 9 states and 177 transitions. [2024-06-03 19:36:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 227 transitions, 2401 flow [2024-06-03 19:36:25,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 227 transitions, 2201 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:25,258 INFO L231 Difference]: Finished difference. Result has 140 places, 194 transitions, 1895 flow [2024-06-03 19:36:25,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1895, PETRI_PLACES=140, PETRI_TRANSITIONS=194} [2024-06-03 19:36:25,259 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 94 predicate places. [2024-06-03 19:36:25,259 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 194 transitions, 1895 flow [2024-06-03 19:36:25,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:36:25,259 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)] === [2024-06-03 19:36:25,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 417223082, now seen corresponding path program 1 times [2024-06-03 19:36:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538958195] [2024-06-03 19:36:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538958195] [2024-06-03 19:36:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538958195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:26,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155870409] [2024-06-03 19:36:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:26,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:26,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:26,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 194 transitions, 1895 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:26,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:26,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:26,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:27,365 INFO L124 PetriNetUnfolderBase]: 3090/4725 cut-off events. [2024-06-03 19:36:27,365 INFO L125 PetriNetUnfolderBase]: For 227112/227130 co-relation queries the response was YES. [2024-06-03 19:36:27,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34097 conditions, 4725 events. 3090/4725 cut-off events. For 227112/227130 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24651 event pairs, 1194 based on Foata normal form. 6/4713 useless extension candidates. Maximal degree in co-relation 34033. Up to 4332 conditions per place. [2024-06-03 19:36:27,403 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 170 selfloop transitions, 62 changer transitions 0/239 dead transitions. [2024-06-03 19:36:27,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 239 transitions, 2606 flow [2024-06-03 19:36:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-03 19:36:27,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-03 19:36:27,405 INFO L175 Difference]: Start difference. First operand has 140 places, 194 transitions, 1895 flow. Second operand 9 states and 169 transitions. [2024-06-03 19:36:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 239 transitions, 2606 flow [2024-06-03 19:36:27,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 239 transitions, 2503 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-03 19:36:27,572 INFO L231 Difference]: Finished difference. Result has 147 places, 206 transitions, 2098 flow [2024-06-03 19:36:27,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2098, PETRI_PLACES=147, PETRI_TRANSITIONS=206} [2024-06-03 19:36:27,572 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 101 predicate places. [2024-06-03 19:36:27,572 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 206 transitions, 2098 flow [2024-06-03 19:36:27,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:27,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:27,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:27,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:36:27,573 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:27,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 429255298, now seen corresponding path program 4 times [2024-06-03 19:36:27,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:27,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174229863] [2024-06-03 19:36:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174229863] [2024-06-03 19:36:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174229863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:28,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74097238] [2024-06-03 19:36:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:28,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:28,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 206 transitions, 2098 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:28,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:28,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:28,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:29,668 INFO L124 PetriNetUnfolderBase]: 2969/4623 cut-off events. [2024-06-03 19:36:29,668 INFO L125 PetriNetUnfolderBase]: For 244042/244110 co-relation queries the response was YES. [2024-06-03 19:36:29,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34106 conditions, 4623 events. 2969/4623 cut-off events. For 244042/244110 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 24785 event pairs, 1161 based on Foata normal form. 19/4621 useless extension candidates. Maximal degree in co-relation 34040. Up to 4121 conditions per place. [2024-06-03 19:36:29,708 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 162 selfloop transitions, 58 changer transitions 0/241 dead transitions. [2024-06-03 19:36:29,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 241 transitions, 2715 flow [2024-06-03 19:36:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-03 19:36:29,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-03 19:36:29,709 INFO L175 Difference]: Start difference. First operand has 147 places, 206 transitions, 2098 flow. Second operand 9 states and 176 transitions. [2024-06-03 19:36:29,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 241 transitions, 2715 flow [2024-06-03 19:36:29,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 241 transitions, 2573 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:29,885 INFO L231 Difference]: Finished difference. Result has 150 places, 208 transitions, 2150 flow [2024-06-03 19:36:29,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2150, PETRI_PLACES=150, PETRI_TRANSITIONS=208} [2024-06-03 19:36:29,885 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-03 19:36:29,885 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 208 transitions, 2150 flow [2024-06-03 19:36:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:29,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:29,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:29,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:36:29,886 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)] === [2024-06-03 19:36:29,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1477098226, now seen corresponding path program 1 times [2024-06-03 19:36:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244286679] [2024-06-03 19:36:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:29,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:30,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244286679] [2024-06-03 19:36:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244286679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:30,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529768819] [2024-06-03 19:36:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:30,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:30,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 208 transitions, 2150 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:30,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:30,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:30,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:31,796 INFO L124 PetriNetUnfolderBase]: 3201/4904 cut-off events. [2024-06-03 19:36:31,796 INFO L125 PetriNetUnfolderBase]: For 253563/253589 co-relation queries the response was YES. [2024-06-03 19:36:31,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36147 conditions, 4904 events. 3201/4904 cut-off events. For 253563/253589 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 25684 event pairs, 964 based on Foata normal form. 20/4916 useless extension candidates. Maximal degree in co-relation 36080. Up to 4470 conditions per place. [2024-06-03 19:36:31,906 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 189 selfloop transitions, 65 changer transitions 0/261 dead transitions. [2024-06-03 19:36:31,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 261 transitions, 2996 flow [2024-06-03 19:36:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-03 19:36:31,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-03 19:36:31,907 INFO L175 Difference]: Start difference. First operand has 150 places, 208 transitions, 2150 flow. Second operand 10 states and 186 transitions. [2024-06-03 19:36:31,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 261 transitions, 2996 flow [2024-06-03 19:36:32,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 261 transitions, 2815 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:32,082 INFO L231 Difference]: Finished difference. Result has 156 places, 224 transitions, 2374 flow [2024-06-03 19:36:32,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2374, PETRI_PLACES=156, PETRI_TRANSITIONS=224} [2024-06-03 19:36:32,082 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-06-03 19:36:32,082 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 2374 flow [2024-06-03 19:36:32,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:32,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:32,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:36:32,082 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)] === [2024-06-03 19:36:32,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -214605310, now seen corresponding path program 5 times [2024-06-03 19:36:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320240746] [2024-06-03 19:36:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:32,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320240746] [2024-06-03 19:36:33,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320240746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:33,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:33,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:33,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163466303] [2024-06-03 19:36:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:33,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:33,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:33,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:33,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 224 transitions, 2374 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:33,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:33,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:34,214 INFO L124 PetriNetUnfolderBase]: 3130/4889 cut-off events. [2024-06-03 19:36:34,214 INFO L125 PetriNetUnfolderBase]: For 270674/270695 co-relation queries the response was YES. [2024-06-03 19:36:34,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36903 conditions, 4889 events. 3130/4889 cut-off events. For 270674/270695 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 26556 event pairs, 994 based on Foata normal form. 14/4893 useless extension candidates. Maximal degree in co-relation 36832. Up to 4201 conditions per place. [2024-06-03 19:36:34,251 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 172 selfloop transitions, 77 changer transitions 0/272 dead transitions. [2024-06-03 19:36:34,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 272 transitions, 3170 flow [2024-06-03 19:36:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-03 19:36:34,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-03 19:36:34,253 INFO L175 Difference]: Start difference. First operand has 156 places, 224 transitions, 2374 flow. Second operand 9 states and 174 transitions. [2024-06-03 19:36:34,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 272 transitions, 3170 flow [2024-06-03 19:36:34,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 272 transitions, 3037 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:34,462 INFO L231 Difference]: Finished difference. Result has 162 places, 239 transitions, 2642 flow [2024-06-03 19:36:34,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2642, PETRI_PLACES=162, PETRI_TRANSITIONS=239} [2024-06-03 19:36:34,462 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2024-06-03 19:36:34,463 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 239 transitions, 2642 flow [2024-06-03 19:36:34,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:34,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:34,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:36:34,463 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)] === [2024-06-03 19:36:34,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 656584640, now seen corresponding path program 2 times [2024-06-03 19:36:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985392162] [2024-06-03 19:36:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985392162] [2024-06-03 19:36:35,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985392162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:35,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:35,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934418388] [2024-06-03 19:36:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:35,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 239 transitions, 2642 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:35,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:35,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:35,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:36,425 INFO L124 PetriNetUnfolderBase]: 3320/5098 cut-off events. [2024-06-03 19:36:36,425 INFO L125 PetriNetUnfolderBase]: For 288709/288733 co-relation queries the response was YES. [2024-06-03 19:36:36,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38957 conditions, 5098 events. 3320/5098 cut-off events. For 288709/288733 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 27090 event pairs, 1024 based on Foata normal form. 16/5102 useless extension candidates. Maximal degree in co-relation 38884. Up to 4644 conditions per place. [2024-06-03 19:36:36,468 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 208 selfloop transitions, 72 changer transitions 0/287 dead transitions. [2024-06-03 19:36:36,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 287 transitions, 3476 flow [2024-06-03 19:36:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-03 19:36:36,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:36:36,470 INFO L175 Difference]: Start difference. First operand has 162 places, 239 transitions, 2642 flow. Second operand 10 states and 185 transitions. [2024-06-03 19:36:36,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 287 transitions, 3476 flow [2024-06-03 19:36:36,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 287 transitions, 3270 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:36,695 INFO L231 Difference]: Finished difference. Result has 166 places, 250 transitions, 2761 flow [2024-06-03 19:36:36,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2761, PETRI_PLACES=166, PETRI_TRANSITIONS=250} [2024-06-03 19:36:36,695 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2024-06-03 19:36:36,695 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 250 transitions, 2761 flow [2024-06-03 19:36:36,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:36,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:36,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:36,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:36:36,696 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:36,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2062907094, now seen corresponding path program 2 times [2024-06-03 19:36:36,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:36,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489027212] [2024-06-03 19:36:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:37,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:37,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489027212] [2024-06-03 19:36:37,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489027212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:37,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:37,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:37,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678118914] [2024-06-03 19:36:37,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:37,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:37,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:37,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:37,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:37,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 250 transitions, 2761 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:37,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:37,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:38,824 INFO L124 PetriNetUnfolderBase]: 3356/5141 cut-off events. [2024-06-03 19:36:38,824 INFO L125 PetriNetUnfolderBase]: For 300482/300502 co-relation queries the response was YES. [2024-06-03 19:36:38,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40053 conditions, 5141 events. 3356/5141 cut-off events. For 300482/300502 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 27244 event pairs, 989 based on Foata normal form. 10/5132 useless extension candidates. Maximal degree in co-relation 39979. Up to 4701 conditions per place. [2024-06-03 19:36:38,871 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 210 selfloop transitions, 75 changer transitions 0/292 dead transitions. [2024-06-03 19:36:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 292 transitions, 3599 flow [2024-06-03 19:36:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-03 19:36:38,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-03 19:36:38,873 INFO L175 Difference]: Start difference. First operand has 166 places, 250 transitions, 2761 flow. Second operand 9 states and 170 transitions. [2024-06-03 19:36:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 292 transitions, 3599 flow [2024-06-03 19:36:39,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 292 transitions, 3420 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-03 19:36:39,100 INFO L231 Difference]: Finished difference. Result has 171 places, 262 transitions, 2954 flow [2024-06-03 19:36:39,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2954, PETRI_PLACES=171, PETRI_TRANSITIONS=262} [2024-06-03 19:36:39,100 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2024-06-03 19:36:39,100 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 262 transitions, 2954 flow [2024-06-03 19:36:39,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:39,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:39,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:39,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:36:39,101 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)] === [2024-06-03 19:36:39,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1479899696, now seen corresponding path program 6 times [2024-06-03 19:36:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328612661] [2024-06-03 19:36:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:40,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328612661] [2024-06-03 19:36:40,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328612661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:40,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:40,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60620475] [2024-06-03 19:36:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:40,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 262 transitions, 2954 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:40,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:41,379 INFO L124 PetriNetUnfolderBase]: 3215/5007 cut-off events. [2024-06-03 19:36:41,379 INFO L125 PetriNetUnfolderBase]: For 317926/318018 co-relation queries the response was YES. [2024-06-03 19:36:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39679 conditions, 5007 events. 3215/5007 cut-off events. For 317926/318018 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 27315 event pairs, 949 based on Foata normal form. 77/5061 useless extension candidates. Maximal degree in co-relation 39603. Up to 4445 conditions per place. [2024-06-03 19:36:41,416 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 204 selfloop transitions, 67 changer transitions 0/296 dead transitions. [2024-06-03 19:36:41,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 296 transitions, 3688 flow [2024-06-03 19:36:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-03 19:36:41,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-03 19:36:41,417 INFO L175 Difference]: Start difference. First operand has 171 places, 262 transitions, 2954 flow. Second operand 9 states and 177 transitions. [2024-06-03 19:36:41,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 296 transitions, 3688 flow [2024-06-03 19:36:41,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 296 transitions, 3534 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:41,647 INFO L231 Difference]: Finished difference. Result has 174 places, 266 transitions, 3040 flow [2024-06-03 19:36:41,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3040, PETRI_PLACES=174, PETRI_TRANSITIONS=266} [2024-06-03 19:36:41,648 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2024-06-03 19:36:41,648 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 266 transitions, 3040 flow [2024-06-03 19:36:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:41,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:41,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:36:41,649 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)] === [2024-06-03 19:36:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1361627566, now seen corresponding path program 3 times [2024-06-03 19:36:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26157109] [2024-06-03 19:36:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26157109] [2024-06-03 19:36:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26157109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:42,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:42,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:42,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020246967] [2024-06-03 19:36:42,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:42,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:42,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:42,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:42,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 266 transitions, 3040 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:42,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:42,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:42,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:43,817 INFO L124 PetriNetUnfolderBase]: 3616/5554 cut-off events. [2024-06-03 19:36:43,817 INFO L125 PetriNetUnfolderBase]: For 351448/351466 co-relation queries the response was YES. [2024-06-03 19:36:43,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43984 conditions, 5554 events. 3616/5554 cut-off events. For 351448/351466 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 29954 event pairs, 896 based on Foata normal form. 16/5562 useless extension candidates. Maximal degree in co-relation 43907. Up to 4698 conditions per place. [2024-06-03 19:36:43,864 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 210 selfloop transitions, 114 changer transitions 0/331 dead transitions. [2024-06-03 19:36:43,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 331 transitions, 4299 flow [2024-06-03 19:36:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-03 19:36:43,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889 [2024-06-03 19:36:43,865 INFO L175 Difference]: Start difference. First operand has 174 places, 266 transitions, 3040 flow. Second operand 10 states and 193 transitions. [2024-06-03 19:36:43,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 331 transitions, 4299 flow [2024-06-03 19:36:44,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 331 transitions, 4103 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-03 19:36:44,161 INFO L231 Difference]: Finished difference. Result has 180 places, 289 transitions, 3496 flow [2024-06-03 19:36:44,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3496, PETRI_PLACES=180, PETRI_TRANSITIONS=289} [2024-06-03 19:36:44,161 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 134 predicate places. [2024-06-03 19:36:44,162 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 289 transitions, 3496 flow [2024-06-03 19:36:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:44,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:44,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:36:44,162 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)] === [2024-06-03 19:36:44,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1213800222, now seen corresponding path program 4 times [2024-06-03 19:36:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425048368] [2024-06-03 19:36:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:45,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425048368] [2024-06-03 19:36:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425048368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:45,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332706947] [2024-06-03 19:36:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:45,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:45,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 289 transitions, 3496 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:46,444 INFO L124 PetriNetUnfolderBase]: 3638/5597 cut-off events. [2024-06-03 19:36:46,444 INFO L125 PetriNetUnfolderBase]: For 369979/370017 co-relation queries the response was YES. [2024-06-03 19:36:46,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46060 conditions, 5597 events. 3638/5597 cut-off events. For 369979/370017 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 30327 event pairs, 899 based on Foata normal form. 32/5621 useless extension candidates. Maximal degree in co-relation 45979. Up to 4707 conditions per place. [2024-06-03 19:36:46,499 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 217 selfloop transitions, 110 changer transitions 0/334 dead transitions. [2024-06-03 19:36:46,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 334 transitions, 4578 flow [2024-06-03 19:36:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-03 19:36:46,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-03 19:36:46,500 INFO L175 Difference]: Start difference. First operand has 180 places, 289 transitions, 3496 flow. Second operand 10 states and 194 transitions. [2024-06-03 19:36:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 334 transitions, 4578 flow [2024-06-03 19:36:46,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 334 transitions, 4416 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-03 19:36:46,928 INFO L231 Difference]: Finished difference. Result has 187 places, 293 transitions, 3708 flow [2024-06-03 19:36:46,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3708, PETRI_PLACES=187, PETRI_TRANSITIONS=293} [2024-06-03 19:36:46,929 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-06-03 19:36:46,929 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 293 transitions, 3708 flow [2024-06-03 19:36:46,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:46,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:46,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:36:46,930 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:46,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1361812016, now seen corresponding path program 7 times [2024-06-03 19:36:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532067059] [2024-06-03 19:36:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:46,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:48,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:48,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532067059] [2024-06-03 19:36:48,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532067059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:48,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:48,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65384011] [2024-06-03 19:36:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:48,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:48,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 293 transitions, 3708 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:48,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:48,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:48,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:49,326 INFO L124 PetriNetUnfolderBase]: 3449/5408 cut-off events. [2024-06-03 19:36:49,326 INFO L125 PetriNetUnfolderBase]: For 385014/385037 co-relation queries the response was YES. [2024-06-03 19:36:49,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45901 conditions, 5408 events. 3449/5408 cut-off events. For 385014/385037 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 30140 event pairs, 892 based on Foata normal form. 12/5405 useless extension candidates. Maximal degree in co-relation 45817. Up to 4733 conditions per place. [2024-06-03 19:36:49,380 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 224 selfloop transitions, 75 changer transitions 0/327 dead transitions. [2024-06-03 19:36:49,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 327 transitions, 4513 flow [2024-06-03 19:36:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:36:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:36:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-03 19:36:49,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-03 19:36:49,381 INFO L175 Difference]: Start difference. First operand has 187 places, 293 transitions, 3708 flow. Second operand 9 states and 177 transitions. [2024-06-03 19:36:49,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 327 transitions, 4513 flow [2024-06-03 19:36:49,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 327 transitions, 4273 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:49,773 INFO L231 Difference]: Finished difference. Result has 191 places, 296 transitions, 3757 flow [2024-06-03 19:36:49,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3757, PETRI_PLACES=191, PETRI_TRANSITIONS=296} [2024-06-03 19:36:49,774 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 145 predicate places. [2024-06-03 19:36:49,774 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 296 transitions, 3757 flow [2024-06-03 19:36:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:49,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:49,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:36:49,775 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:49,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1361807056, now seen corresponding path program 5 times [2024-06-03 19:36:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755796051] [2024-06-03 19:36:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755796051] [2024-06-03 19:36:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755796051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172671917] [2024-06-03 19:36:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:50,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:50,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 296 transitions, 3757 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:50,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:50,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:50,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:51,875 INFO L124 PetriNetUnfolderBase]: 3663/5638 cut-off events. [2024-06-03 19:36:51,875 INFO L125 PetriNetUnfolderBase]: For 400921/400939 co-relation queries the response was YES. [2024-06-03 19:36:51,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47570 conditions, 5638 events. 3663/5638 cut-off events. For 400921/400939 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 30613 event pairs, 946 based on Foata normal form. 12/5641 useless extension candidates. Maximal degree in co-relation 47484. Up to 4743 conditions per place. [2024-06-03 19:36:51,930 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 225 selfloop transitions, 107 changer transitions 0/339 dead transitions. [2024-06-03 19:36:51,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 339 transitions, 4836 flow [2024-06-03 19:36:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:36:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:36:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-03 19:36:51,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-03 19:36:51,931 INFO L175 Difference]: Start difference. First operand has 191 places, 296 transitions, 3757 flow. Second operand 10 states and 195 transitions. [2024-06-03 19:36:51,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 339 transitions, 4836 flow [2024-06-03 19:36:52,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 339 transitions, 4611 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:52,377 INFO L231 Difference]: Finished difference. Result has 195 places, 299 transitions, 3846 flow [2024-06-03 19:36:52,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3846, PETRI_PLACES=195, PETRI_TRANSITIONS=299} [2024-06-03 19:36:52,377 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 149 predicate places. [2024-06-03 19:36:52,377 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 299 transitions, 3846 flow [2024-06-03 19:36:52,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:36:52,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:52,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:52,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:36:52,378 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:52,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2031965023, now seen corresponding path program 1 times [2024-06-03 19:36:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236473287] [2024-06-03 19:36:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236473287] [2024-06-03 19:36:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236473287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:53,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:36:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706427589] [2024-06-03 19:36:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:36:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:36:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:36:53,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:53,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 299 transitions, 3846 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:53,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:53,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:53,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:54,359 INFO L124 PetriNetUnfolderBase]: 3761/5764 cut-off events. [2024-06-03 19:36:54,360 INFO L125 PetriNetUnfolderBase]: For 426695/426704 co-relation queries the response was YES. [2024-06-03 19:36:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48992 conditions, 5764 events. 3761/5764 cut-off events. For 426695/426704 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30930 event pairs, 1331 based on Foata normal form. 5/5755 useless extension candidates. Maximal degree in co-relation 48905. Up to 5370 conditions per place. [2024-06-03 19:36:54,418 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 272 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2024-06-03 19:36:54,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 323 transitions, 4658 flow [2024-06-03 19:36:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:36:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:36:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-03 19:36:54,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-03 19:36:54,419 INFO L175 Difference]: Start difference. First operand has 195 places, 299 transitions, 3846 flow. Second operand 7 states and 129 transitions. [2024-06-03 19:36:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 323 transitions, 4658 flow [2024-06-03 19:36:54,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 323 transitions, 4433 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-03 19:36:54,937 INFO L231 Difference]: Finished difference. Result has 196 places, 305 transitions, 3756 flow [2024-06-03 19:36:54,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3756, PETRI_PLACES=196, PETRI_TRANSITIONS=305} [2024-06-03 19:36:54,937 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2024-06-03 19:36:54,937 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 305 transitions, 3756 flow [2024-06-03 19:36:54,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:54,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:54,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:54,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:36:54,938 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:54,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1412159720, now seen corresponding path program 8 times [2024-06-03 19:36:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981147632] [2024-06-03 19:36:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:56,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:56,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981147632] [2024-06-03 19:36:56,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981147632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:56,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:56,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:36:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290419498] [2024-06-03 19:36:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:36:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:36:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:36:56,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:36:56,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 305 transitions, 3756 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:56,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:56,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:36:56,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:36:57,313 INFO L124 PetriNetUnfolderBase]: 3520/5488 cut-off events. [2024-06-03 19:36:57,313 INFO L125 PetriNetUnfolderBase]: For 443232/443369 co-relation queries the response was YES. [2024-06-03 19:36:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48035 conditions, 5488 events. 3520/5488 cut-off events. For 443232/443369 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 30441 event pairs, 1122 based on Foata normal form. 99/5561 useless extension candidates. Maximal degree in co-relation 47947. Up to 4756 conditions per place. [2024-06-03 19:36:57,372 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 228 selfloop transitions, 79 changer transitions 0/335 dead transitions. [2024-06-03 19:36:57,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 335 transitions, 4562 flow [2024-06-03 19:36:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:36:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:36:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-03 19:36:57,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-03 19:36:57,375 INFO L175 Difference]: Start difference. First operand has 196 places, 305 transitions, 3756 flow. Second operand 8 states and 157 transitions. [2024-06-03 19:36:57,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 335 transitions, 4562 flow [2024-06-03 19:36:57,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 335 transitions, 4491 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-03 19:36:57,814 INFO L231 Difference]: Finished difference. Result has 201 places, 307 transitions, 3955 flow [2024-06-03 19:36:57,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3955, PETRI_PLACES=201, PETRI_TRANSITIONS=307} [2024-06-03 19:36:57,814 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 155 predicate places. [2024-06-03 19:36:57,815 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 307 transitions, 3955 flow [2024-06-03 19:36:57,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:57,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:36:57,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:36:57,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:36:57,815 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:36:57,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:36:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1450871641, now seen corresponding path program 1 times [2024-06-03 19:36:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:36:57,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408521816] [2024-06-03 19:36:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:36:57,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:36:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:36:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:36:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:36:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408521816] [2024-06-03 19:36:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408521816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:36:59,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:36:59,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:36:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764101959] [2024-06-03 19:36:59,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:36:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:36:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:36:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:36:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:36:59,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:36:59,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 307 transitions, 3955 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:36:59,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:36:59,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:36:59,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:00,326 INFO L124 PetriNetUnfolderBase]: 3727/5727 cut-off events. [2024-06-03 19:37:00,326 INFO L125 PetriNetUnfolderBase]: For 451949/451957 co-relation queries the response was YES. [2024-06-03 19:37:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50187 conditions, 5727 events. 3727/5727 cut-off events. For 451949/451957 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 31075 event pairs, 952 based on Foata normal form. 10/5731 useless extension candidates. Maximal degree in co-relation 50098. Up to 5184 conditions per place. [2024-06-03 19:37:00,380 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 254 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-06-03 19:37:00,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 345 transitions, 4853 flow [2024-06-03 19:37:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:37:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:37:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-03 19:37:00,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-03 19:37:00,381 INFO L175 Difference]: Start difference. First operand has 201 places, 307 transitions, 3955 flow. Second operand 10 states and 187 transitions. [2024-06-03 19:37:00,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 345 transitions, 4853 flow [2024-06-03 19:37:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 345 transitions, 4635 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:00,921 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 4022 flow [2024-06-03 19:37:00,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4022, PETRI_PLACES=205, PETRI_TRANSITIONS=310} [2024-06-03 19:37:00,922 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 159 predicate places. [2024-06-03 19:37:00,922 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 4022 flow [2024-06-03 19:37:00,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:00,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:00,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:00,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:37:00,922 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:00,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1412159596, now seen corresponding path program 3 times [2024-06-03 19:37:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:00,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406450657] [2024-06-03 19:37:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:02,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406450657] [2024-06-03 19:37:02,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406450657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:02,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:02,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:02,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521946637] [2024-06-03 19:37:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:02,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:02,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 310 transitions, 4022 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:02,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:02,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:02,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:03,299 INFO L124 PetriNetUnfolderBase]: 3728/5725 cut-off events. [2024-06-03 19:37:03,299 INFO L125 PetriNetUnfolderBase]: For 470981/470985 co-relation queries the response was YES. [2024-06-03 19:37:03,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50570 conditions, 5725 events. 3728/5725 cut-off events. For 470981/470985 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 31051 event pairs, 1177 based on Foata normal form. 6/5720 useless extension candidates. Maximal degree in co-relation 50480. Up to 5107 conditions per place. [2024-06-03 19:37:03,356 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 236 selfloop transitions, 95 changer transitions 0/338 dead transitions. [2024-06-03 19:37:03,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 338 transitions, 4790 flow [2024-06-03 19:37:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:37:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:37:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-03 19:37:03,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-03 19:37:03,357 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 4022 flow. Second operand 8 states and 151 transitions. [2024-06-03 19:37:03,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 338 transitions, 4790 flow [2024-06-03 19:37:04,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 338 transitions, 4541 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:04,008 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 3999 flow [2024-06-03 19:37:04,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3773, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3999, PETRI_PLACES=205, PETRI_TRANSITIONS=310} [2024-06-03 19:37:04,008 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 159 predicate places. [2024-06-03 19:37:04,008 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 3999 flow [2024-06-03 19:37:04,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:04,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:04,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:04,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:37:04,009 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:04,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1412039440, now seen corresponding path program 6 times [2024-06-03 19:37:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477375491] [2024-06-03 19:37:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:04,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477375491] [2024-06-03 19:37:04,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477375491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:04,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781527920] [2024-06-03 19:37:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:05,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:05,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 310 transitions, 3999 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:05,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:05,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:05,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:06,279 INFO L124 PetriNetUnfolderBase]: 3746/5763 cut-off events. [2024-06-03 19:37:06,279 INFO L125 PetriNetUnfolderBase]: For 488966/488978 co-relation queries the response was YES. [2024-06-03 19:37:06,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51380 conditions, 5763 events. 3746/5763 cut-off events. For 488966/488978 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31438 event pairs, 977 based on Foata normal form. 16/5773 useless extension candidates. Maximal degree in co-relation 51289. Up to 5123 conditions per place. [2024-06-03 19:37:06,343 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 252 selfloop transitions, 87 changer transitions 0/346 dead transitions. [2024-06-03 19:37:06,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 346 transitions, 4905 flow [2024-06-03 19:37:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-03 19:37:06,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-03 19:37:06,344 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 3999 flow. Second operand 9 states and 168 transitions. [2024-06-03 19:37:06,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 346 transitions, 4905 flow [2024-06-03 19:37:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 346 transitions, 4618 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:06,946 INFO L231 Difference]: Finished difference. Result has 206 places, 313 transitions, 4014 flow [2024-06-03 19:37:06,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4014, PETRI_PLACES=206, PETRI_TRANSITIONS=313} [2024-06-03 19:37:06,947 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 160 predicate places. [2024-06-03 19:37:06,947 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 313 transitions, 4014 flow [2024-06-03 19:37:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:06,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:06,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:37:06,947 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:06,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1296753230, now seen corresponding path program 9 times [2024-06-03 19:37:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483325718] [2024-06-03 19:37:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:08,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483325718] [2024-06-03 19:37:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483325718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:08,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723556057] [2024-06-03 19:37:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:08,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:37:08,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 313 transitions, 4014 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:08,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:08,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:37:08,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:09,340 INFO L124 PetriNetUnfolderBase]: 3552/5568 cut-off events. [2024-06-03 19:37:09,340 INFO L125 PetriNetUnfolderBase]: For 480779/480797 co-relation queries the response was YES. [2024-06-03 19:37:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50805 conditions, 5568 events. 3552/5568 cut-off events. For 480779/480797 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 31169 event pairs, 882 based on Foata normal form. 12/5558 useless extension candidates. Maximal degree in co-relation 50713. Up to 4794 conditions per place. [2024-06-03 19:37:09,400 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 231 selfloop transitions, 83 changer transitions 0/342 dead transitions. [2024-06-03 19:37:09,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 342 transitions, 4838 flow [2024-06-03 19:37:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:37:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:37:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-03 19:37:09,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-03 19:37:09,401 INFO L175 Difference]: Start difference. First operand has 206 places, 313 transitions, 4014 flow. Second operand 8 states and 157 transitions. [2024-06-03 19:37:09,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 342 transitions, 4838 flow [2024-06-03 19:37:10,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 342 transitions, 4602 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:10,078 INFO L231 Difference]: Finished difference. Result has 207 places, 315 transitions, 4052 flow [2024-06-03 19:37:10,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3778, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4052, PETRI_PLACES=207, PETRI_TRANSITIONS=315} [2024-06-03 19:37:10,078 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 161 predicate places. [2024-06-03 19:37:10,078 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 315 transitions, 4052 flow [2024-06-03 19:37:10,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:10,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:10,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:37:10,079 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:10,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1539132865, now seen corresponding path program 2 times [2024-06-03 19:37:10,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681466898] [2024-06-03 19:37:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681466898] [2024-06-03 19:37:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681466898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:11,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:11,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574969532] [2024-06-03 19:37:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:11,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:11,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 315 transitions, 4052 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:11,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:11,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:11,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:12,759 INFO L124 PetriNetUnfolderBase]: 3935/6036 cut-off events. [2024-06-03 19:37:12,759 INFO L125 PetriNetUnfolderBase]: For 528554/528562 co-relation queries the response was YES. [2024-06-03 19:37:12,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55495 conditions, 6036 events. 3935/6036 cut-off events. For 528554/528562 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33048 event pairs, 959 based on Foata normal form. 12/6038 useless extension candidates. Maximal degree in co-relation 55402. Up to 4764 conditions per place. [2024-06-03 19:37:12,824 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 211 selfloop transitions, 145 changer transitions 0/363 dead transitions. [2024-06-03 19:37:12,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 363 transitions, 5622 flow [2024-06-03 19:37:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-03 19:37:12,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-03 19:37:12,826 INFO L175 Difference]: Start difference. First operand has 207 places, 315 transitions, 4052 flow. Second operand 9 states and 177 transitions. [2024-06-03 19:37:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 363 transitions, 5622 flow [2024-06-03 19:37:13,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 363 transitions, 5354 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:13,530 INFO L231 Difference]: Finished difference. Result has 212 places, 326 transitions, 4530 flow [2024-06-03 19:37:13,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3798, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4530, PETRI_PLACES=212, PETRI_TRANSITIONS=326} [2024-06-03 19:37:13,531 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2024-06-03 19:37:13,531 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 326 transitions, 4530 flow [2024-06-03 19:37:13,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:13,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:13,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:13,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:37:13,532 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:13,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1296568780, now seen corresponding path program 7 times [2024-06-03 19:37:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803150006] [2024-06-03 19:37:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803150006] [2024-06-03 19:37:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803150006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:14,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45642146] [2024-06-03 19:37:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:14,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:14,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:14,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 326 transitions, 4530 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:14,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:14,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:14,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:15,936 INFO L124 PetriNetUnfolderBase]: 3921/6018 cut-off events. [2024-06-03 19:37:15,937 INFO L125 PetriNetUnfolderBase]: For 530716/530724 co-relation queries the response was YES. [2024-06-03 19:37:15,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56414 conditions, 6018 events. 3921/6018 cut-off events. For 530716/530724 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32957 event pairs, 955 based on Foata normal form. 16/6024 useless extension candidates. Maximal degree in co-relation 56318. Up to 4760 conditions per place. [2024-06-03 19:37:15,996 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 201 selfloop transitions, 153 changer transitions 0/361 dead transitions. [2024-06-03 19:37:15,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 361 transitions, 5574 flow [2024-06-03 19:37:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-03 19:37:15,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-03 19:37:15,998 INFO L175 Difference]: Start difference. First operand has 212 places, 326 transitions, 4530 flow. Second operand 9 states and 174 transitions. [2024-06-03 19:37:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 361 transitions, 5574 flow [2024-06-03 19:37:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 361 transitions, 5277 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-03 19:37:16,672 INFO L231 Difference]: Finished difference. Result has 217 places, 326 transitions, 4555 flow [2024-06-03 19:37:16,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4555, PETRI_PLACES=217, PETRI_TRANSITIONS=326} [2024-06-03 19:37:16,672 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 171 predicate places. [2024-06-03 19:37:16,672 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 326 transitions, 4555 flow [2024-06-03 19:37:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:16,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:16,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:37:16,673 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:16,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1202170530, now seen corresponding path program 8 times [2024-06-03 19:37:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133550926] [2024-06-03 19:37:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133550926] [2024-06-03 19:37:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133550926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:17,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:17,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:17,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584848995] [2024-06-03 19:37:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:17,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:17,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:17,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 326 transitions, 4555 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:17,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:17,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:17,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:19,057 INFO L124 PetriNetUnfolderBase]: 3927/6032 cut-off events. [2024-06-03 19:37:19,058 INFO L125 PetriNetUnfolderBase]: For 531845/531853 co-relation queries the response was YES. [2024-06-03 19:37:19,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56515 conditions, 6032 events. 3927/6032 cut-off events. For 531845/531853 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33065 event pairs, 1004 based on Foata normal form. 12/6034 useless extension candidates. Maximal degree in co-relation 56417. Up to 4766 conditions per place. [2024-06-03 19:37:19,121 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 216 selfloop transitions, 141 changer transitions 0/364 dead transitions. [2024-06-03 19:37:19,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 364 transitions, 5727 flow [2024-06-03 19:37:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-03 19:37:19,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-03 19:37:19,122 INFO L175 Difference]: Start difference. First operand has 217 places, 326 transitions, 4555 flow. Second operand 9 states and 176 transitions. [2024-06-03 19:37:19,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 364 transitions, 5727 flow [2024-06-03 19:37:19,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 364 transitions, 5423 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:19,936 INFO L231 Difference]: Finished difference. Result has 219 places, 329 transitions, 4671 flow [2024-06-03 19:37:19,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4671, PETRI_PLACES=219, PETRI_TRANSITIONS=329} [2024-06-03 19:37:19,937 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-06-03 19:37:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 329 transitions, 4671 flow [2024-06-03 19:37:19,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:19,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:19,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:37:19,938 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)] === [2024-06-03 19:37:19,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -377882093, now seen corresponding path program 2 times [2024-06-03 19:37:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927519199] [2024-06-03 19:37:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927519199] [2024-06-03 19:37:20,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927519199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:20,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:20,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:37:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535270958] [2024-06-03 19:37:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:37:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:37:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:37:20,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:20,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 329 transitions, 4671 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:20,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:20,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:20,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:22,145 INFO L124 PetriNetUnfolderBase]: 4072/6229 cut-off events. [2024-06-03 19:37:22,146 INFO L125 PetriNetUnfolderBase]: For 549551/549565 co-relation queries the response was YES. [2024-06-03 19:37:22,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57653 conditions, 6229 events. 4072/6229 cut-off events. For 549551/549565 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33769 event pairs, 1379 based on Foata normal form. 5/6213 useless extension candidates. Maximal degree in co-relation 57554. Up to 5836 conditions per place. [2024-06-03 19:37:22,213 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 293 selfloop transitions, 27 changer transitions 0/346 dead transitions. [2024-06-03 19:37:22,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 346 transitions, 5495 flow [2024-06-03 19:37:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:37:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:37:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-03 19:37:22,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-03 19:37:22,214 INFO L175 Difference]: Start difference. First operand has 219 places, 329 transitions, 4671 flow. Second operand 6 states and 112 transitions. [2024-06-03 19:37:22,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 346 transitions, 5495 flow [2024-06-03 19:37:22,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 346 transitions, 5208 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:22,944 INFO L231 Difference]: Finished difference. Result has 219 places, 332 transitions, 4491 flow [2024-06-03 19:37:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4491, PETRI_PLACES=219, PETRI_TRANSITIONS=332} [2024-06-03 19:37:22,944 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-06-03 19:37:22,944 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 332 transitions, 4491 flow [2024-06-03 19:37:22,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:22,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:22,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:22,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:37:22,945 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)] === [2024-06-03 19:37:22,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1030095796, now seen corresponding path program 9 times [2024-06-03 19:37:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220095931] [2024-06-03 19:37:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:24,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220095931] [2024-06-03 19:37:24,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220095931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948648951] [2024-06-03 19:37:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:24,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:24,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 332 transitions, 4491 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:24,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:24,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:24,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:25,320 INFO L124 PetriNetUnfolderBase]: 4144/6368 cut-off events. [2024-06-03 19:37:25,321 INFO L125 PetriNetUnfolderBase]: For 563079/563097 co-relation queries the response was YES. [2024-06-03 19:37:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59508 conditions, 6368 events. 4144/6368 cut-off events. For 563079/563097 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 35361 event pairs, 939 based on Foata normal form. 20/6362 useless extension candidates. Maximal degree in co-relation 59408. Up to 4609 conditions per place. [2024-06-03 19:37:25,399 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 204 selfloop transitions, 177 changer transitions 0/388 dead transitions. [2024-06-03 19:37:25,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 388 transitions, 6469 flow [2024-06-03 19:37:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-03 19:37:25,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454320987654321 [2024-06-03 19:37:25,400 INFO L175 Difference]: Start difference. First operand has 219 places, 332 transitions, 4491 flow. Second operand 9 states and 184 transitions. [2024-06-03 19:37:25,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 388 transitions, 6469 flow [2024-06-03 19:37:26,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 388 transitions, 6399 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-03 19:37:26,154 INFO L231 Difference]: Finished difference. Result has 225 places, 346 transitions, 5224 flow [2024-06-03 19:37:26,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5224, PETRI_PLACES=225, PETRI_TRANSITIONS=346} [2024-06-03 19:37:26,155 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 179 predicate places. [2024-06-03 19:37:26,155 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 346 transitions, 5224 flow [2024-06-03 19:37:26,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:26,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:26,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:26,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:37:26,156 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)] === [2024-06-03 19:37:26,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1650992036, now seen corresponding path program 10 times [2024-06-03 19:37:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898243080] [2024-06-03 19:37:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:26,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898243080] [2024-06-03 19:37:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898243080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:27,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398929039] [2024-06-03 19:37:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:27,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:27,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:27,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:27,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 346 transitions, 5224 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:27,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:27,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:27,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:28,544 INFO L124 PetriNetUnfolderBase]: 4166/6400 cut-off events. [2024-06-03 19:37:28,545 INFO L125 PetriNetUnfolderBase]: For 574394/574412 co-relation queries the response was YES. [2024-06-03 19:37:28,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61588 conditions, 6400 events. 4166/6400 cut-off events. For 574394/574412 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 35507 event pairs, 919 based on Foata normal form. 16/6390 useless extension candidates. Maximal degree in co-relation 61487. Up to 4632 conditions per place. [2024-06-03 19:37:28,731 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 200 selfloop transitions, 186 changer transitions 0/393 dead transitions. [2024-06-03 19:37:28,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 393 transitions, 7004 flow [2024-06-03 19:37:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-03 19:37:28,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-03 19:37:28,733 INFO L175 Difference]: Start difference. First operand has 225 places, 346 transitions, 5224 flow. Second operand 9 states and 183 transitions. [2024-06-03 19:37:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 393 transitions, 7004 flow [2024-06-03 19:37:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 393 transitions, 6729 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-03 19:37:29,445 INFO L231 Difference]: Finished difference. Result has 233 places, 354 transitions, 5638 flow [2024-06-03 19:37:29,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5638, PETRI_PLACES=233, PETRI_TRANSITIONS=354} [2024-06-03 19:37:29,446 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 187 predicate places. [2024-06-03 19:37:29,446 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 354 transitions, 5638 flow [2024-06-03 19:37:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:29,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:29,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:29,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:37:29,446 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)] === [2024-06-03 19:37:29,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1659272756, now seen corresponding path program 11 times [2024-06-03 19:37:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115827491] [2024-06-03 19:37:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115827491] [2024-06-03 19:37:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115827491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551475383] [2024-06-03 19:37:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:30,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:30,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 354 transitions, 5638 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:30,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:30,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:30,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:31,921 INFO L124 PetriNetUnfolderBase]: 4152/6382 cut-off events. [2024-06-03 19:37:31,921 INFO L125 PetriNetUnfolderBase]: For 588387/588405 co-relation queries the response was YES. [2024-06-03 19:37:31,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62121 conditions, 6382 events. 4152/6382 cut-off events. For 588387/588405 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35441 event pairs, 902 based on Foata normal form. 20/6376 useless extension candidates. Maximal degree in co-relation 62016. Up to 4628 conditions per place. [2024-06-03 19:37:31,991 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 185 selfloop transitions, 199 changer transitions 0/391 dead transitions. [2024-06-03 19:37:31,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 391 transitions, 6972 flow [2024-06-03 19:37:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-03 19:37:31,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-03 19:37:31,992 INFO L175 Difference]: Start difference. First operand has 233 places, 354 transitions, 5638 flow. Second operand 9 states and 180 transitions. [2024-06-03 19:37:31,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 391 transitions, 6972 flow [2024-06-03 19:37:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 391 transitions, 6540 flow, removed 96 selfloop flow, removed 4 redundant places. [2024-06-03 19:37:32,947 INFO L231 Difference]: Finished difference. Result has 238 places, 354 transitions, 5614 flow [2024-06-03 19:37:32,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5614, PETRI_PLACES=238, PETRI_TRANSITIONS=354} [2024-06-03 19:37:32,948 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 192 predicate places. [2024-06-03 19:37:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 354 transitions, 5614 flow [2024-06-03 19:37:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:37:32,948 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)] === [2024-06-03 19:37:32,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1492693494, now seen corresponding path program 12 times [2024-06-03 19:37:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:32,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704665306] [2024-06-03 19:37:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704665306] [2024-06-03 19:37:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704665306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:33,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:33,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:33,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023192381] [2024-06-03 19:37:33,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:33,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:34,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:34,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 354 transitions, 5614 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:34,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:34,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:34,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:35,364 INFO L124 PetriNetUnfolderBase]: 4238/6516 cut-off events. [2024-06-03 19:37:35,364 INFO L125 PetriNetUnfolderBase]: For 621539/621557 co-relation queries the response was YES. [2024-06-03 19:37:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63916 conditions, 6516 events. 4238/6516 cut-off events. For 621539/621557 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 36323 event pairs, 990 based on Foata normal form. 16/6506 useless extension candidates. Maximal degree in co-relation 63810. Up to 4677 conditions per place. [2024-06-03 19:37:35,440 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 220 selfloop transitions, 176 changer transitions 0/403 dead transitions. [2024-06-03 19:37:35,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 403 transitions, 7661 flow [2024-06-03 19:37:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-03 19:37:35,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2024-06-03 19:37:35,441 INFO L175 Difference]: Start difference. First operand has 238 places, 354 transitions, 5614 flow. Second operand 9 states and 188 transitions. [2024-06-03 19:37:35,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 403 transitions, 7661 flow [2024-06-03 19:37:36,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 403 transitions, 7286 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 19:37:36,423 INFO L231 Difference]: Finished difference. Result has 242 places, 362 transitions, 5910 flow [2024-06-03 19:37:36,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5910, PETRI_PLACES=242, PETRI_TRANSITIONS=362} [2024-06-03 19:37:36,423 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 196 predicate places. [2024-06-03 19:37:36,423 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 362 transitions, 5910 flow [2024-06-03 19:37:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:36,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:36,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:36,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:37:36,424 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:36,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1780672018, now seen corresponding path program 13 times [2024-06-03 19:37:36,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:36,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197865884] [2024-06-03 19:37:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197865884] [2024-06-03 19:37:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197865884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491142477] [2024-06-03 19:37:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:37,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 362 transitions, 5910 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:38,916 INFO L124 PetriNetUnfolderBase]: 4224/6498 cut-off events. [2024-06-03 19:37:38,916 INFO L125 PetriNetUnfolderBase]: For 647487/647505 co-relation queries the response was YES. [2024-06-03 19:37:38,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64389 conditions, 6498 events. 4224/6498 cut-off events. For 647487/647505 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36235 event pairs, 986 based on Foata normal form. 20/6492 useless extension candidates. Maximal degree in co-relation 64280. Up to 4673 conditions per place. [2024-06-03 19:37:39,000 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 218 selfloop transitions, 176 changer transitions 0/401 dead transitions. [2024-06-03 19:37:39,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 401 transitions, 7494 flow [2024-06-03 19:37:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-03 19:37:39,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-03 19:37:39,001 INFO L175 Difference]: Start difference. First operand has 242 places, 362 transitions, 5910 flow. Second operand 9 states and 185 transitions. [2024-06-03 19:37:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 401 transitions, 7494 flow [2024-06-03 19:37:40,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 401 transitions, 6649 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:40,301 INFO L231 Difference]: Finished difference. Result has 243 places, 362 transitions, 5427 flow [2024-06-03 19:37:40,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5427, PETRI_PLACES=243, PETRI_TRANSITIONS=362} [2024-06-03 19:37:40,302 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2024-06-03 19:37:40,302 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 362 transitions, 5427 flow [2024-06-03 19:37:40,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:40,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:40,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:37:40,302 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)] === [2024-06-03 19:37:40,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1780856468, now seen corresponding path program 10 times [2024-06-03 19:37:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441624215] [2024-06-03 19:37:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:41,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441624215] [2024-06-03 19:37:41,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441624215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:41,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:41,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930867030] [2024-06-03 19:37:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:41,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:41,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:41,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:37:41,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 362 transitions, 5427 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:41,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:41,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:37:41,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:43,050 INFO L124 PetriNetUnfolderBase]: 3944/6174 cut-off events. [2024-06-03 19:37:43,050 INFO L125 PetriNetUnfolderBase]: For 642737/642775 co-relation queries the response was YES. [2024-06-03 19:37:43,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61317 conditions, 6174 events. 3944/6174 cut-off events. For 642737/642775 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 35295 event pairs, 910 based on Foata normal form. 16/6136 useless extension candidates. Maximal degree in co-relation 61208. Up to 5363 conditions per place. [2024-06-03 19:37:43,122 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 275 selfloop transitions, 86 changer transitions 0/389 dead transitions. [2024-06-03 19:37:43,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 389 transitions, 6339 flow [2024-06-03 19:37:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:37:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:37:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-03 19:37:43,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-03 19:37:43,123 INFO L175 Difference]: Start difference. First operand has 243 places, 362 transitions, 5427 flow. Second operand 8 states and 156 transitions. [2024-06-03 19:37:43,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 389 transitions, 6339 flow [2024-06-03 19:37:44,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 389 transitions, 5914 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 19:37:44,173 INFO L231 Difference]: Finished difference. Result has 243 places, 364 transitions, 5279 flow [2024-06-03 19:37:44,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5002, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5279, PETRI_PLACES=243, PETRI_TRANSITIONS=364} [2024-06-03 19:37:44,173 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2024-06-03 19:37:44,173 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 364 transitions, 5279 flow [2024-06-03 19:37:44,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:44,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:44,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:37:44,174 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)] === [2024-06-03 19:37:44,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1780851508, now seen corresponding path program 14 times [2024-06-03 19:37:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395598247] [2024-06-03 19:37:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:45,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395598247] [2024-06-03 19:37:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395598247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:37:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625462262] [2024-06-03 19:37:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:37:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:37:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:37:45,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:45,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 364 transitions, 5279 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:45,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:45,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:45,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:46,779 INFO L124 PetriNetUnfolderBase]: 4229/6509 cut-off events. [2024-06-03 19:37:46,779 INFO L125 PetriNetUnfolderBase]: For 660408/660426 co-relation queries the response was YES. [2024-06-03 19:37:46,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62544 conditions, 6509 events. 4229/6509 cut-off events. For 660408/660426 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 36280 event pairs, 922 based on Foata normal form. 16/6501 useless extension candidates. Maximal degree in co-relation 62434. Up to 4668 conditions per place. [2024-06-03 19:37:46,855 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 209 selfloop transitions, 187 changer transitions 0/403 dead transitions. [2024-06-03 19:37:46,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 403 transitions, 6761 flow [2024-06-03 19:37:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:37:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:37:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-03 19:37:46,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2024-06-03 19:37:46,856 INFO L175 Difference]: Start difference. First operand has 243 places, 364 transitions, 5279 flow. Second operand 9 states and 182 transitions. [2024-06-03 19:37:46,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 403 transitions, 6761 flow [2024-06-03 19:37:47,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 403 transitions, 6502 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:47,609 INFO L231 Difference]: Finished difference. Result has 246 places, 367 transitions, 5518 flow [2024-06-03 19:37:47,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5020, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5518, PETRI_PLACES=246, PETRI_TRANSITIONS=367} [2024-06-03 19:37:47,610 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 200 predicate places. [2024-06-03 19:37:47,610 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 367 transitions, 5518 flow [2024-06-03 19:37:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-03 19:37:47,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:47,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:47,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:37:47,611 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:47,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 407963039, now seen corresponding path program 3 times [2024-06-03 19:37:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848697019] [2024-06-03 19:37:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:47,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848697019] [2024-06-03 19:37:48,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848697019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:48,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:37:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437056555] [2024-06-03 19:37:48,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:48,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:37:48,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:37:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:37:48,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:48,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 367 transitions, 5518 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:48,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:48,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:48,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:49,963 INFO L124 PetriNetUnfolderBase]: 4416/6727 cut-off events. [2024-06-03 19:37:49,963 INFO L125 PetriNetUnfolderBase]: For 692447/692479 co-relation queries the response was YES. [2024-06-03 19:37:50,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64104 conditions, 6727 events. 4416/6727 cut-off events. For 692447/692479 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 36759 event pairs, 1412 based on Foata normal form. 9/6693 useless extension candidates. Maximal degree in co-relation 63993. Up to 6346 conditions per place. [2024-06-03 19:37:50,046 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 323 selfloop transitions, 26 changer transitions 0/375 dead transitions. [2024-06-03 19:37:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 375 transitions, 6242 flow [2024-06-03 19:37:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:37:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:37:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-03 19:37:50,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 19:37:50,047 INFO L175 Difference]: Start difference. First operand has 246 places, 367 transitions, 5518 flow. Second operand 6 states and 105 transitions. [2024-06-03 19:37:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 375 transitions, 6242 flow [2024-06-03 19:37:51,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 375 transitions, 5787 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-03 19:37:51,106 INFO L231 Difference]: Finished difference. Result has 246 places, 367 transitions, 5121 flow [2024-06-03 19:37:51,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5063, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5121, PETRI_PLACES=246, PETRI_TRANSITIONS=367} [2024-06-03 19:37:51,107 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 200 predicate places. [2024-06-03 19:37:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 367 transitions, 5121 flow [2024-06-03 19:37:51,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:51,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:51,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:51,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:37:51,107 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:51,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1744722161, now seen corresponding path program 1 times [2024-06-03 19:37:51,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:51,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841242004] [2024-06-03 19:37:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:51,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841242004] [2024-06-03 19:37:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841242004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:37:51,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511821775] [2024-06-03 19:37:51,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:51,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:37:51,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:51,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:37:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:37:52,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:37:52,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 367 transitions, 5121 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:52,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:52,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:37:52,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:53,209 INFO L124 PetriNetUnfolderBase]: 4096/6379 cut-off events. [2024-06-03 19:37:53,209 INFO L125 PetriNetUnfolderBase]: For 622569/622598 co-relation queries the response was YES. [2024-06-03 19:37:53,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57998 conditions, 6379 events. 4096/6379 cut-off events. For 622569/622598 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35955 event pairs, 1471 based on Foata normal form. 10/6332 useless extension candidates. Maximal degree in co-relation 57886. Up to 5902 conditions per place. [2024-06-03 19:37:53,285 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 341 selfloop transitions, 17 changer transitions 0/385 dead transitions. [2024-06-03 19:37:53,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 385 transitions, 6097 flow [2024-06-03 19:37:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:37:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:37:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-03 19:37:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-03 19:37:53,286 INFO L175 Difference]: Start difference. First operand has 246 places, 367 transitions, 5121 flow. Second operand 6 states and 114 transitions. [2024-06-03 19:37:53,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 385 transitions, 6097 flow [2024-06-03 19:37:54,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 385 transitions, 6025 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 19:37:54,291 INFO L231 Difference]: Finished difference. Result has 247 places, 373 transitions, 5203 flow [2024-06-03 19:37:54,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5203, PETRI_PLACES=247, PETRI_TRANSITIONS=373} [2024-06-03 19:37:54,292 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 201 predicate places. [2024-06-03 19:37:54,292 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 373 transitions, 5203 flow [2024-06-03 19:37:54,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:54,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:54,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:54,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:37:54,293 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:37:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1753032641, now seen corresponding path program 2 times [2024-06-03 19:37:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379339667] [2024-06-03 19:37:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379339667] [2024-06-03 19:37:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379339667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:55,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:55,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:37:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297634383] [2024-06-03 19:37:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:37:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:37:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:37:55,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-03 19:37:55,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 373 transitions, 5203 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:55,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:55,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-03 19:37:55,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:37:56,391 INFO L124 PetriNetUnfolderBase]: 4093/6375 cut-off events. [2024-06-03 19:37:56,391 INFO L125 PetriNetUnfolderBase]: For 639972/640001 co-relation queries the response was YES. [2024-06-03 19:37:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58578 conditions, 6375 events. 4093/6375 cut-off events. For 639972/640001 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 35919 event pairs, 1470 based on Foata normal form. 10/6328 useless extension candidates. Maximal degree in co-relation 58465. Up to 5911 conditions per place. [2024-06-03 19:37:56,467 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 342 selfloop transitions, 12 changer transitions 0/381 dead transitions. [2024-06-03 19:37:56,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 381 transitions, 5937 flow [2024-06-03 19:37:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:37:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:37:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-03 19:37:56,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:37:56,468 INFO L175 Difference]: Start difference. First operand has 247 places, 373 transitions, 5203 flow. Second operand 6 states and 108 transitions. [2024-06-03 19:37:56,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 381 transitions, 5937 flow [2024-06-03 19:37:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 381 transitions, 5836 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-03 19:37:57,629 INFO L231 Difference]: Finished difference. Result has 251 places, 373 transitions, 5132 flow [2024-06-03 19:37:57,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5132, PETRI_PLACES=251, PETRI_TRANSITIONS=373} [2024-06-03 19:37:57,629 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 205 predicate places. [2024-06-03 19:37:57,629 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 373 transitions, 5132 flow [2024-06-03 19:37:57,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:57,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:37:57,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:37:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:37:57,630 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)] === [2024-06-03 19:37:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:37:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1659580586, now seen corresponding path program 1 times [2024-06-03 19:37:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:37:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349375724] [2024-06-03 19:37:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:37:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:37:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:37:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:37:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:37:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349375724] [2024-06-03 19:37:59,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349375724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:37:59,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:37:59,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:37:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435853844] [2024-06-03 19:37:59,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:37:59,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:37:59,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:37:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:37:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:37:59,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:37:59,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 373 transitions, 5132 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:37:59,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:37:59,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:37:59,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:00,521 INFO L124 PetriNetUnfolderBase]: 4333/6636 cut-off events. [2024-06-03 19:38:00,521 INFO L125 PetriNetUnfolderBase]: For 654198/654198 co-relation queries the response was YES. [2024-06-03 19:38:00,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59953 conditions, 6636 events. 4333/6636 cut-off events. For 654198/654198 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 36279 event pairs, 1589 based on Foata normal form. 4/6628 useless extension candidates. Maximal degree in co-relation 59838. Up to 6282 conditions per place. [2024-06-03 19:38:00,600 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 377 selfloop transitions, 23 changer transitions 0/406 dead transitions. [2024-06-03 19:38:00,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 406 transitions, 6136 flow [2024-06-03 19:38:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-03 19:38:00,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-03 19:38:00,609 INFO L175 Difference]: Start difference. First operand has 251 places, 373 transitions, 5132 flow. Second operand 10 states and 174 transitions. [2024-06-03 19:38:00,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 406 transitions, 6136 flow [2024-06-03 19:38:01,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 406 transitions, 6104 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 19:38:01,809 INFO L231 Difference]: Finished difference. Result has 256 places, 375 transitions, 5241 flow [2024-06-03 19:38:01,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5100, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5241, PETRI_PLACES=256, PETRI_TRANSITIONS=375} [2024-06-03 19:38:01,809 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 210 predicate places. [2024-06-03 19:38:01,810 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 375 transitions, 5241 flow [2024-06-03 19:38:01,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:01,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:01,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:01,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:38:01,810 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)] === [2024-06-03 19:38:01,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1710143521, now seen corresponding path program 1 times [2024-06-03 19:38:01,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103840677] [2024-06-03 19:38:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:02,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103840677] [2024-06-03 19:38:02,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103840677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:02,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:02,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:38:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054902653] [2024-06-03 19:38:02,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:02,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:38:02,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:02,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:38:02,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:38:02,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:02,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 375 transitions, 5241 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:02,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:02,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:02,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:04,294 INFO L124 PetriNetUnfolderBase]: 4281/6563 cut-off events. [2024-06-03 19:38:04,294 INFO L125 PetriNetUnfolderBase]: For 677892/677921 co-relation queries the response was YES. [2024-06-03 19:38:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60492 conditions, 6563 events. 4281/6563 cut-off events. For 677892/677921 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35999 event pairs, 1568 based on Foata normal form. 11/6527 useless extension candidates. Maximal degree in co-relation 60376. Up to 6226 conditions per place. [2024-06-03 19:38:04,376 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 348 selfloop transitions, 15 changer transitions 0/388 dead transitions. [2024-06-03 19:38:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 388 transitions, 6035 flow [2024-06-03 19:38:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:38:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:38:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-03 19:38:04,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-03 19:38:04,377 INFO L175 Difference]: Start difference. First operand has 256 places, 375 transitions, 5241 flow. Second operand 7 states and 117 transitions. [2024-06-03 19:38:04,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 388 transitions, 6035 flow [2024-06-03 19:38:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 388 transitions, 5912 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:05,599 INFO L231 Difference]: Finished difference. Result has 255 places, 378 transitions, 5198 flow [2024-06-03 19:38:05,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5118, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5198, PETRI_PLACES=255, PETRI_TRANSITIONS=378} [2024-06-03 19:38:05,600 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 209 predicate places. [2024-06-03 19:38:05,600 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 378 transitions, 5198 flow [2024-06-03 19:38:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:05,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:05,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:05,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:38:05,600 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:05,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1937171178, now seen corresponding path program 1 times [2024-06-03 19:38:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:05,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952988303] [2024-06-03 19:38:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952988303] [2024-06-03 19:38:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952988303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:06,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:06,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:06,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194646106] [2024-06-03 19:38:06,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:06,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:06,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:06,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:06,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 378 transitions, 5198 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:06,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:06,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:06,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:08,312 INFO L124 PetriNetUnfolderBase]: 4247/6545 cut-off events. [2024-06-03 19:38:08,312 INFO L125 PetriNetUnfolderBase]: For 789325/789333 co-relation queries the response was YES. [2024-06-03 19:38:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65281 conditions, 6545 events. 4247/6545 cut-off events. For 789325/789333 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 36611 event pairs, 944 based on Foata normal form. 12/6549 useless extension candidates. Maximal degree in co-relation 65164. Up to 5853 conditions per place. [2024-06-03 19:38:08,393 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 332 selfloop transitions, 79 changer transitions 0/418 dead transitions. [2024-06-03 19:38:08,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 418 transitions, 6234 flow [2024-06-03 19:38:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-03 19:38:08,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40444444444444444 [2024-06-03 19:38:08,394 INFO L175 Difference]: Start difference. First operand has 255 places, 378 transitions, 5198 flow. Second operand 10 states and 182 transitions. [2024-06-03 19:38:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 418 transitions, 6234 flow [2024-06-03 19:38:09,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 418 transitions, 6176 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-03 19:38:09,452 INFO L231 Difference]: Finished difference. Result has 260 places, 380 transitions, 5392 flow [2024-06-03 19:38:09,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5392, PETRI_PLACES=260, PETRI_TRANSITIONS=380} [2024-06-03 19:38:09,452 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 214 predicate places. [2024-06-03 19:38:09,452 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 380 transitions, 5392 flow [2024-06-03 19:38:09,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:09,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:09,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:38:09,452 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:09,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash 363921096, now seen corresponding path program 2 times [2024-06-03 19:38:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:09,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939051280] [2024-06-03 19:38:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939051280] [2024-06-03 19:38:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939051280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:10,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911133620] [2024-06-03 19:38:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:10,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:10,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:10,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:10,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 380 transitions, 5392 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:10,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:10,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:12,267 INFO L124 PetriNetUnfolderBase]: 4250/6556 cut-off events. [2024-06-03 19:38:12,268 INFO L125 PetriNetUnfolderBase]: For 796461/796469 co-relation queries the response was YES. [2024-06-03 19:38:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65850 conditions, 6556 events. 4250/6556 cut-off events. For 796461/796469 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 36698 event pairs, 1195 based on Foata normal form. 12/6564 useless extension candidates. Maximal degree in co-relation 65732. Up to 5941 conditions per place. [2024-06-03 19:38:12,343 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 342 selfloop transitions, 73 changer transitions 0/422 dead transitions. [2024-06-03 19:38:12,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 422 transitions, 6527 flow [2024-06-03 19:38:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-03 19:38:12,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088888888888889 [2024-06-03 19:38:12,344 INFO L175 Difference]: Start difference. First operand has 260 places, 380 transitions, 5392 flow. Second operand 10 states and 184 transitions. [2024-06-03 19:38:12,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 422 transitions, 6527 flow [2024-06-03 19:38:13,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 422 transitions, 6219 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:13,583 INFO L231 Difference]: Finished difference. Result has 262 places, 384 transitions, 5422 flow [2024-06-03 19:38:13,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5422, PETRI_PLACES=262, PETRI_TRANSITIONS=384} [2024-06-03 19:38:13,584 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 216 predicate places. [2024-06-03 19:38:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 384 transitions, 5422 flow [2024-06-03 19:38:13,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:13,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:13,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:13,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:38:13,584 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:13,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash 421700136, now seen corresponding path program 3 times [2024-06-03 19:38:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:13,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107306469] [2024-06-03 19:38:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:14,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107306469] [2024-06-03 19:38:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107306469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209042137] [2024-06-03 19:38:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:14,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:14,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:14,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 384 transitions, 5422 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:14,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:14,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:14,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:16,398 INFO L124 PetriNetUnfolderBase]: 4273/6588 cut-off events. [2024-06-03 19:38:16,398 INFO L125 PetriNetUnfolderBase]: For 827703/827707 co-relation queries the response was YES. [2024-06-03 19:38:16,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66381 conditions, 6588 events. 4273/6588 cut-off events. For 827703/827707 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36844 event pairs, 1190 based on Foata normal form. 8/6587 useless extension candidates. Maximal degree in co-relation 66262. Up to 6006 conditions per place. [2024-06-03 19:38:16,479 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 337 selfloop transitions, 79 changer transitions 0/423 dead transitions. [2024-06-03 19:38:16,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 423 transitions, 6478 flow [2024-06-03 19:38:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-03 19:38:16,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:38:16,480 INFO L175 Difference]: Start difference. First operand has 262 places, 384 transitions, 5422 flow. Second operand 10 states and 185 transitions. [2024-06-03 19:38:16,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 423 transitions, 6478 flow [2024-06-03 19:38:17,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 423 transitions, 6264 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:17,767 INFO L231 Difference]: Finished difference. Result has 264 places, 386 transitions, 5468 flow [2024-06-03 19:38:17,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5208, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5468, PETRI_PLACES=264, PETRI_TRANSITIONS=386} [2024-06-03 19:38:17,768 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 218 predicate places. [2024-06-03 19:38:17,768 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 386 transitions, 5468 flow [2024-06-03 19:38:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:17,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:17,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:17,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:38:17,769 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:17,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash 422147621, now seen corresponding path program 3 times [2024-06-03 19:38:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:17,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254138710] [2024-06-03 19:38:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254138710] [2024-06-03 19:38:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254138710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:18,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:18,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807787646] [2024-06-03 19:38:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:18,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:19,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:19,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 386 transitions, 5468 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:19,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:19,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:19,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:20,507 INFO L124 PetriNetUnfolderBase]: 4275/6607 cut-off events. [2024-06-03 19:38:20,507 INFO L125 PetriNetUnfolderBase]: For 843651/843655 co-relation queries the response was YES. [2024-06-03 19:38:20,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66706 conditions, 6607 events. 4275/6607 cut-off events. For 843651/843655 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 37124 event pairs, 1162 based on Foata normal form. 6/6609 useless extension candidates. Maximal degree in co-relation 66586. Up to 5988 conditions per place. [2024-06-03 19:38:20,591 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 333 selfloop transitions, 89 changer transitions 0/429 dead transitions. [2024-06-03 19:38:20,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 429 transitions, 6622 flow [2024-06-03 19:38:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-03 19:38:20,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-03 19:38:20,592 INFO L175 Difference]: Start difference. First operand has 264 places, 386 transitions, 5468 flow. Second operand 10 states and 186 transitions. [2024-06-03 19:38:20,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 429 transitions, 6622 flow [2024-06-03 19:38:22,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 429 transitions, 6386 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:22,005 INFO L231 Difference]: Finished difference. Result has 266 places, 392 transitions, 5614 flow [2024-06-03 19:38:22,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5614, PETRI_PLACES=266, PETRI_TRANSITIONS=392} [2024-06-03 19:38:22,005 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 220 predicate places. [2024-06-03 19:38:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 392 transitions, 5614 flow [2024-06-03 19:38:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:22,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:22,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:38:22,006 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)] === [2024-06-03 19:38:22,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 422013546, now seen corresponding path program 4 times [2024-06-03 19:38:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477667666] [2024-06-03 19:38:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:23,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:23,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477667666] [2024-06-03 19:38:23,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477667666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:23,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273375960] [2024-06-03 19:38:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:23,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:23,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 392 transitions, 5614 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:23,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:23,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:24,806 INFO L124 PetriNetUnfolderBase]: 4292/6616 cut-off events. [2024-06-03 19:38:24,806 INFO L125 PetriNetUnfolderBase]: For 874314/874318 co-relation queries the response was YES. [2024-06-03 19:38:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67504 conditions, 6616 events. 4292/6616 cut-off events. For 874314/874318 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 37076 event pairs, 1162 based on Foata normal form. 8/6614 useless extension candidates. Maximal degree in co-relation 67383. Up to 5971 conditions per place. [2024-06-03 19:38:24,894 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 343 selfloop transitions, 81 changer transitions 0/431 dead transitions. [2024-06-03 19:38:24,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 431 transitions, 6688 flow [2024-06-03 19:38:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-03 19:38:24,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-03 19:38:24,896 INFO L175 Difference]: Start difference. First operand has 266 places, 392 transitions, 5614 flow. Second operand 10 states and 186 transitions. [2024-06-03 19:38:24,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 431 transitions, 6688 flow [2024-06-03 19:38:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 431 transitions, 6466 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:26,422 INFO L231 Difference]: Finished difference. Result has 269 places, 394 transitions, 5658 flow [2024-06-03 19:38:26,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5658, PETRI_PLACES=269, PETRI_TRANSITIONS=394} [2024-06-03 19:38:26,422 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 223 predicate places. [2024-06-03 19:38:26,422 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 394 transitions, 5658 flow [2024-06-03 19:38:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:26,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:26,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:38:26,423 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:26,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash -459350269, now seen corresponding path program 1 times [2024-06-03 19:38:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104023793] [2024-06-03 19:38:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:27,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104023793] [2024-06-03 19:38:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104023793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:27,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:27,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:38:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63840627] [2024-06-03 19:38:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:38:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:38:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:38:27,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:27,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 394 transitions, 5658 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:27,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:27,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:28,883 INFO L124 PetriNetUnfolderBase]: 4526/6900 cut-off events. [2024-06-03 19:38:28,883 INFO L125 PetriNetUnfolderBase]: For 902010/902043 co-relation queries the response was YES. [2024-06-03 19:38:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68259 conditions, 6900 events. 4526/6900 cut-off events. For 902010/902043 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 37829 event pairs, 1144 based on Foata normal form. 14/6877 useless extension candidates. Maximal degree in co-relation 68137. Up to 6309 conditions per place. [2024-06-03 19:38:28,970 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 338 selfloop transitions, 69 changer transitions 0/438 dead transitions. [2024-06-03 19:38:28,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 438 transitions, 7113 flow [2024-06-03 19:38:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:38:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:38:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-03 19:38:28,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-03 19:38:28,971 INFO L175 Difference]: Start difference. First operand has 269 places, 394 transitions, 5658 flow. Second operand 8 states and 153 transitions. [2024-06-03 19:38:28,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 438 transitions, 7113 flow [2024-06-03 19:38:30,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 438 transitions, 6849 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:30,419 INFO L231 Difference]: Finished difference. Result has 271 places, 412 transitions, 5890 flow [2024-06-03 19:38:30,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5890, PETRI_PLACES=271, PETRI_TRANSITIONS=412} [2024-06-03 19:38:30,420 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 225 predicate places. [2024-06-03 19:38:30,420 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 412 transitions, 5890 flow [2024-06-03 19:38:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:30,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:30,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:38:30,421 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)] === [2024-06-03 19:38:30,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 472512928, now seen corresponding path program 5 times [2024-06-03 19:38:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:30,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627999823] [2024-06-03 19:38:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:30,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:31,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:31,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627999823] [2024-06-03 19:38:31,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627999823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:31,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:31,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:31,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762515724] [2024-06-03 19:38:31,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:31,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:31,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:31,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 412 transitions, 5890 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:31,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:31,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:31,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:33,325 INFO L124 PetriNetUnfolderBase]: 4361/6729 cut-off events. [2024-06-03 19:38:33,325 INFO L125 PetriNetUnfolderBase]: For 921988/921996 co-relation queries the response was YES. [2024-06-03 19:38:33,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69787 conditions, 6729 events. 4361/6729 cut-off events. For 921988/921996 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 37831 event pairs, 933 based on Foata normal form. 12/6737 useless extension candidates. Maximal degree in co-relation 69662. Up to 6094 conditions per place. [2024-06-03 19:38:33,406 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 365 selfloop transitions, 82 changer transitions 0/454 dead transitions. [2024-06-03 19:38:33,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 454 transitions, 7027 flow [2024-06-03 19:38:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-03 19:38:33,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:38:33,407 INFO L175 Difference]: Start difference. First operand has 271 places, 412 transitions, 5890 flow. Second operand 10 states and 185 transitions. [2024-06-03 19:38:33,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 454 transitions, 7027 flow [2024-06-03 19:38:34,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 454 transitions, 6968 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-03 19:38:34,554 INFO L231 Difference]: Finished difference. Result has 279 places, 418 transitions, 6141 flow [2024-06-03 19:38:34,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5831, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6141, PETRI_PLACES=279, PETRI_TRANSITIONS=418} [2024-06-03 19:38:34,554 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 233 predicate places. [2024-06-03 19:38:34,554 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 418 transitions, 6141 flow [2024-06-03 19:38:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:34,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:34,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:38:34,555 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)] === [2024-06-03 19:38:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1367754596, now seen corresponding path program 6 times [2024-06-03 19:38:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082538519] [2024-06-03 19:38:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082538519] [2024-06-03 19:38:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082538519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:35,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:35,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:35,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495075182] [2024-06-03 19:38:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:36,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:36,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 418 transitions, 6141 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:36,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:36,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:36,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:37,714 INFO L124 PetriNetUnfolderBase]: 4389/6765 cut-off events. [2024-06-03 19:38:37,714 INFO L125 PetriNetUnfolderBase]: For 952866/952874 co-relation queries the response was YES. [2024-06-03 19:38:37,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70989 conditions, 6765 events. 4389/6765 cut-off events. For 952866/952874 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 37984 event pairs, 951 based on Foata normal form. 12/6765 useless extension candidates. Maximal degree in co-relation 70862. Up to 6170 conditions per place. [2024-06-03 19:38:37,802 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 362 selfloop transitions, 88 changer transitions 0/457 dead transitions. [2024-06-03 19:38:37,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 457 transitions, 7279 flow [2024-06-03 19:38:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-03 19:38:37,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-03 19:38:37,803 INFO L175 Difference]: Start difference. First operand has 279 places, 418 transitions, 6141 flow. Second operand 10 states and 186 transitions. [2024-06-03 19:38:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 457 transitions, 7279 flow [2024-06-03 19:38:39,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 457 transitions, 7061 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:39,314 INFO L231 Difference]: Finished difference. Result has 282 places, 422 transitions, 6227 flow [2024-06-03 19:38:39,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6227, PETRI_PLACES=282, PETRI_TRANSITIONS=422} [2024-06-03 19:38:39,315 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 236 predicate places. [2024-06-03 19:38:39,315 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 422 transitions, 6227 flow [2024-06-03 19:38:39,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:39,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:39,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:39,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:38:39,315 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:39,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2002392220, now seen corresponding path program 7 times [2024-06-03 19:38:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:39,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466466986] [2024-06-03 19:38:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:40,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:40,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466466986] [2024-06-03 19:38:40,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466466986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:40,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:40,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169973697] [2024-06-03 19:38:40,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:40,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:40,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:40,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 422 transitions, 6227 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:40,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:40,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:40,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:42,265 INFO L124 PetriNetUnfolderBase]: 4417/6807 cut-off events. [2024-06-03 19:38:42,265 INFO L125 PetriNetUnfolderBase]: For 981860/981868 co-relation queries the response was YES. [2024-06-03 19:38:42,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71806 conditions, 6807 events. 4417/6807 cut-off events. For 981860/981868 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 38315 event pairs, 952 based on Foata normal form. 12/6807 useless extension candidates. Maximal degree in co-relation 71678. Up to 6142 conditions per place. [2024-06-03 19:38:42,356 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 362 selfloop transitions, 92 changer transitions 0/461 dead transitions. [2024-06-03 19:38:42,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 461 transitions, 7373 flow [2024-06-03 19:38:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-03 19:38:42,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-03 19:38:42,357 INFO L175 Difference]: Start difference. First operand has 282 places, 422 transitions, 6227 flow. Second operand 10 states and 187 transitions. [2024-06-03 19:38:42,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 461 transitions, 7373 flow [2024-06-03 19:38:43,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 461 transitions, 7141 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-03 19:38:43,925 INFO L231 Difference]: Finished difference. Result has 285 places, 426 transitions, 6309 flow [2024-06-03 19:38:43,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6309, PETRI_PLACES=285, PETRI_TRANSITIONS=426} [2024-06-03 19:38:43,926 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 239 predicate places. [2024-06-03 19:38:43,926 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 426 transitions, 6309 flow [2024-06-03 19:38:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:43,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:43,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:43,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:38:43,926 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:38:43,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:43,926 INFO L85 PathProgramCache]: Analyzing trace with hash 733505380, now seen corresponding path program 8 times [2024-06-03 19:38:43,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260076152] [2024-06-03 19:38:43,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:43,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:45,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260076152] [2024-06-03 19:38:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260076152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:45,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723612881] [2024-06-03 19:38:45,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:45,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:45,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:45,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:45,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 426 transitions, 6309 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:45,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:45,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:45,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:47,018 INFO L124 PetriNetUnfolderBase]: 4434/6844 cut-off events. [2024-06-03 19:38:47,018 INFO L125 PetriNetUnfolderBase]: For 1012188/1012196 co-relation queries the response was YES. [2024-06-03 19:38:47,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72588 conditions, 6844 events. 4434/6844 cut-off events. For 1012188/1012196 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 38600 event pairs, 945 based on Foata normal form. 12/6852 useless extension candidates. Maximal degree in co-relation 72459. Up to 6106 conditions per place. [2024-06-03 19:38:47,111 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 353 selfloop transitions, 104 changer transitions 0/464 dead transitions. [2024-06-03 19:38:47,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 464 transitions, 7471 flow [2024-06-03 19:38:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-03 19:38:47,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2024-06-03 19:38:47,113 INFO L175 Difference]: Start difference. First operand has 285 places, 426 transitions, 6309 flow. Second operand 10 states and 188 transitions. [2024-06-03 19:38:47,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 464 transitions, 7471 flow [2024-06-03 19:38:48,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 464 transitions, 7197 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-03 19:38:48,701 INFO L231 Difference]: Finished difference. Result has 287 places, 428 transitions, 6362 flow [2024-06-03 19:38:48,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6035, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6362, PETRI_PLACES=287, PETRI_TRANSITIONS=428} [2024-06-03 19:38:48,702 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 241 predicate places. [2024-06-03 19:38:48,702 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 428 transitions, 6362 flow [2024-06-03 19:38:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:48,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:48,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:38:48,702 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)] === [2024-06-03 19:38:48,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1032413726, now seen corresponding path program 9 times [2024-06-03 19:38:48,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019737090] [2024-06-03 19:38:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019737090] [2024-06-03 19:38:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019737090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:50,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:50,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656658991] [2024-06-03 19:38:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:50,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:50,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 428 transitions, 6362 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:50,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:50,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:50,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:51,794 INFO L124 PetriNetUnfolderBase]: 4476/6910 cut-off events. [2024-06-03 19:38:51,794 INFO L125 PetriNetUnfolderBase]: For 1053027/1053035 co-relation queries the response was YES. [2024-06-03 19:38:51,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74126 conditions, 6910 events. 4476/6910 cut-off events. For 1053027/1053035 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 39065 event pairs, 952 based on Foata normal form. 12/6918 useless extension candidates. Maximal degree in co-relation 73996. Up to 6107 conditions per place. [2024-06-03 19:38:51,888 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 354 selfloop transitions, 109 changer transitions 0/470 dead transitions. [2024-06-03 19:38:51,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 470 transitions, 7912 flow [2024-06-03 19:38:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-03 19:38:51,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-03 19:38:51,889 INFO L175 Difference]: Start difference. First operand has 287 places, 428 transitions, 6362 flow. Second operand 10 states and 190 transitions. [2024-06-03 19:38:51,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 470 transitions, 7912 flow [2024-06-03 19:38:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 470 transitions, 7661 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-03 19:38:53,367 INFO L231 Difference]: Finished difference. Result has 291 places, 432 transitions, 6564 flow [2024-06-03 19:38:53,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6111, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6564, PETRI_PLACES=291, PETRI_TRANSITIONS=432} [2024-06-03 19:38:53,367 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 245 predicate places. [2024-06-03 19:38:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 432 transitions, 6564 flow [2024-06-03 19:38:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:53,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:53,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:38:53,368 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)] === [2024-06-03 19:38:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 739011910, now seen corresponding path program 10 times [2024-06-03 19:38:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9253520] [2024-06-03 19:38:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9253520] [2024-06-03 19:38:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9253520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869791355] [2024-06-03 19:38:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:54,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:38:54,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 432 transitions, 6564 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:54,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:54,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:38:54,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:38:56,490 INFO L124 PetriNetUnfolderBase]: 4468/6893 cut-off events. [2024-06-03 19:38:56,490 INFO L125 PetriNetUnfolderBase]: For 1071171/1071179 co-relation queries the response was YES. [2024-06-03 19:38:56,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74106 conditions, 6893 events. 4468/6893 cut-off events. For 1071171/1071179 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 38949 event pairs, 937 based on Foata normal form. 12/6896 useless extension candidates. Maximal degree in co-relation 73975. Up to 6160 conditions per place. [2024-06-03 19:38:56,581 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 351 selfloop transitions, 110 changer transitions 0/468 dead transitions. [2024-06-03 19:38:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 468 transitions, 7626 flow [2024-06-03 19:38:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:38:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:38:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-03 19:38:56,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-03 19:38:56,582 INFO L175 Difference]: Start difference. First operand has 291 places, 432 transitions, 6564 flow. Second operand 10 states and 187 transitions. [2024-06-03 19:38:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 468 transitions, 7626 flow [2024-06-03 19:38:58,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 468 transitions, 7289 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-03 19:38:58,423 INFO L231 Difference]: Finished difference. Result has 295 places, 432 transitions, 6454 flow [2024-06-03 19:38:58,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6454, PETRI_PLACES=295, PETRI_TRANSITIONS=432} [2024-06-03 19:38:58,423 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 249 predicate places. [2024-06-03 19:38:58,423 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 432 transitions, 6454 flow [2024-06-03 19:38:58,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:58,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:38:58,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:38:58,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:38:58,423 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)] === [2024-06-03 19:38:58,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:38:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 739227391, now seen corresponding path program 1 times [2024-06-03 19:38:58,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:38:58,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988587200] [2024-06-03 19:38:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:38:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:38:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:38:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:38:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:38:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988587200] [2024-06-03 19:38:59,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988587200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:38:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:38:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:38:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091641175] [2024-06-03 19:38:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:38:59,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:38:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:38:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:38:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:38:59,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:38:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 432 transitions, 6454 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:38:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:38:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:38:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:01,458 INFO L124 PetriNetUnfolderBase]: 4919/7389 cut-off events. [2024-06-03 19:39:01,458 INFO L125 PetriNetUnfolderBase]: For 1092946/1092954 co-relation queries the response was YES. [2024-06-03 19:39:01,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75450 conditions, 7389 events. 4919/7389 cut-off events. For 1092946/1092954 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 39698 event pairs, 1006 based on Foata normal form. 14/7401 useless extension candidates. Maximal degree in co-relation 75317. Up to 6418 conditions per place. [2024-06-03 19:39:01,556 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 332 selfloop transitions, 160 changer transitions 0/497 dead transitions. [2024-06-03 19:39:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 497 transitions, 7997 flow [2024-06-03 19:39:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:39:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:39:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-03 19:39:01,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:39:01,557 INFO L175 Difference]: Start difference. First operand has 295 places, 432 transitions, 6454 flow. Second operand 11 states and 198 transitions. [2024-06-03 19:39:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 497 transitions, 7997 flow [2024-06-03 19:39:03,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 497 transitions, 7686 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-03 19:39:03,715 INFO L231 Difference]: Finished difference. Result has 298 places, 455 transitions, 6922 flow [2024-06-03 19:39:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6922, PETRI_PLACES=298, PETRI_TRANSITIONS=455} [2024-06-03 19:39:03,715 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 252 predicate places. [2024-06-03 19:39:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 455 transitions, 6922 flow [2024-06-03 19:39:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:03,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:39:03,716 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash 785282377, now seen corresponding path program 2 times [2024-06-03 19:39:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698198071] [2024-06-03 19:39:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:04,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698198071] [2024-06-03 19:39:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698198071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:39:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847808702] [2024-06-03 19:39:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:39:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:39:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:39:04,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:04,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 455 transitions, 6922 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:04,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:04,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:04,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:06,500 INFO L124 PetriNetUnfolderBase]: 4684/7148 cut-off events. [2024-06-03 19:39:06,501 INFO L125 PetriNetUnfolderBase]: For 1116179/1116212 co-relation queries the response was YES. [2024-06-03 19:39:06,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74733 conditions, 7148 events. 4684/7148 cut-off events. For 1116179/1116212 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 39545 event pairs, 1051 based on Foata normal form. 10/7121 useless extension candidates. Maximal degree in co-relation 74597. Up to 6475 conditions per place. [2024-06-03 19:39:06,598 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 376 selfloop transitions, 82 changer transitions 0/499 dead transitions. [2024-06-03 19:39:06,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 499 transitions, 8595 flow [2024-06-03 19:39:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:39:06,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:39:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-03 19:39:06,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-03 19:39:06,599 INFO L175 Difference]: Start difference. First operand has 298 places, 455 transitions, 6922 flow. Second operand 8 states and 156 transitions. [2024-06-03 19:39:06,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 499 transitions, 8595 flow [2024-06-03 19:39:08,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 499 transitions, 8386 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-03 19:39:08,285 INFO L231 Difference]: Finished difference. Result has 300 places, 471 transitions, 7129 flow [2024-06-03 19:39:08,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7129, PETRI_PLACES=300, PETRI_TRANSITIONS=471} [2024-06-03 19:39:08,286 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 254 predicate places. [2024-06-03 19:39:08,286 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 471 transitions, 7129 flow [2024-06-03 19:39:08,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:08,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:08,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:08,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:39:08,286 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:08,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1434978517, now seen corresponding path program 3 times [2024-06-03 19:39:08,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:08,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26846713] [2024-06-03 19:39:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26846713] [2024-06-03 19:39:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26846713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:09,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:09,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:39:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048130278] [2024-06-03 19:39:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:39:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:39:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:39:09,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 471 transitions, 7129 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:11,130 INFO L124 PetriNetUnfolderBase]: 4678/7143 cut-off events. [2024-06-03 19:39:11,130 INFO L125 PetriNetUnfolderBase]: For 1075663/1075691 co-relation queries the response was YES. [2024-06-03 19:39:11,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73759 conditions, 7143 events. 4678/7143 cut-off events. For 1075663/1075691 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 39477 event pairs, 1022 based on Foata normal form. 10/7123 useless extension candidates. Maximal degree in co-relation 73621. Up to 6470 conditions per place. [2024-06-03 19:39:11,216 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 365 selfloop transitions, 88 changer transitions 0/494 dead transitions. [2024-06-03 19:39:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 494 transitions, 8403 flow [2024-06-03 19:39:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:39:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:39:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-03 19:39:11,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-03 19:39:11,217 INFO L175 Difference]: Start difference. First operand has 300 places, 471 transitions, 7129 flow. Second operand 8 states and 150 transitions. [2024-06-03 19:39:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 494 transitions, 8403 flow [2024-06-03 19:39:12,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 494 transitions, 8232 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-03 19:39:12,805 INFO L231 Difference]: Finished difference. Result has 305 places, 471 transitions, 7142 flow [2024-06-03 19:39:12,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6958, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7142, PETRI_PLACES=305, PETRI_TRANSITIONS=471} [2024-06-03 19:39:12,805 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 259 predicate places. [2024-06-03 19:39:12,806 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 471 transitions, 7142 flow [2024-06-03 19:39:12,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:12,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:12,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:12,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:39:12,806 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)] === [2024-06-03 19:39:12,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1433595111, now seen corresponding path program 1 times [2024-06-03 19:39:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690776797] [2024-06-03 19:39:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690776797] [2024-06-03 19:39:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690776797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:39:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401412734] [2024-06-03 19:39:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:39:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:39:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:39:13,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:39:13,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 471 transitions, 7142 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:13,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:13,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:39:13,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:15,635 INFO L124 PetriNetUnfolderBase]: 4877/7346 cut-off events. [2024-06-03 19:39:15,635 INFO L125 PetriNetUnfolderBase]: For 1102077/1102101 co-relation queries the response was YES. [2024-06-03 19:39:15,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75591 conditions, 7346 events. 4877/7346 cut-off events. For 1102077/1102101 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 39912 event pairs, 1484 based on Foata normal form. 5/7316 useless extension candidates. Maximal degree in co-relation 75452. Up to 6962 conditions per place. [2024-06-03 19:39:15,727 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 423 selfloop transitions, 34 changer transitions 0/496 dead transitions. [2024-06-03 19:39:15,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 496 transitions, 8366 flow [2024-06-03 19:39:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:39:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:39:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-03 19:39:15,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-03 19:39:15,728 INFO L175 Difference]: Start difference. First operand has 305 places, 471 transitions, 7142 flow. Second operand 8 states and 137 transitions. [2024-06-03 19:39:15,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 496 transitions, 8366 flow [2024-06-03 19:39:17,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 496 transitions, 8184 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:39:17,925 INFO L231 Difference]: Finished difference. Result has 307 places, 477 transitions, 7144 flow [2024-06-03 19:39:17,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6960, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7144, PETRI_PLACES=307, PETRI_TRANSITIONS=477} [2024-06-03 19:39:17,925 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 261 predicate places. [2024-06-03 19:39:17,925 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 477 transitions, 7144 flow [2024-06-03 19:39:17,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:17,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:17,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:39:17,926 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:17,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -912268004, now seen corresponding path program 11 times [2024-06-03 19:39:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373892210] [2024-06-03 19:39:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:17,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373892210] [2024-06-03 19:39:19,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373892210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:19,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549110300] [2024-06-03 19:39:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:19,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:19,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:19,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 477 transitions, 7144 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:19,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:19,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:19,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:21,020 INFO L124 PetriNetUnfolderBase]: 4580/7031 cut-off events. [2024-06-03 19:39:21,020 INFO L125 PetriNetUnfolderBase]: For 1155664/1155706 co-relation queries the response was YES. [2024-06-03 19:39:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76161 conditions, 7031 events. 4580/7031 cut-off events. For 1155664/1155706 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39457 event pairs, 991 based on Foata normal form. 22/7045 useless extension candidates. Maximal degree in co-relation 76021. Up to 6095 conditions per place. [2024-06-03 19:39:21,119 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 392 selfloop transitions, 110 changer transitions 0/512 dead transitions. [2024-06-03 19:39:21,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 512 transitions, 8380 flow [2024-06-03 19:39:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-03 19:39:21,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-03 19:39:21,120 INFO L175 Difference]: Start difference. First operand has 307 places, 477 transitions, 7144 flow. Second operand 9 states and 165 transitions. [2024-06-03 19:39:21,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 512 transitions, 8380 flow [2024-06-03 19:39:23,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 512 transitions, 8300 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-03 19:39:23,447 INFO L231 Difference]: Finished difference. Result has 312 places, 479 transitions, 7428 flow [2024-06-03 19:39:23,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7428, PETRI_PLACES=312, PETRI_TRANSITIONS=479} [2024-06-03 19:39:23,447 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 266 predicate places. [2024-06-03 19:39:23,447 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 479 transitions, 7428 flow [2024-06-03 19:39:23,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:23,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:23,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:39:23,448 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:23,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:23,448 INFO L85 PathProgramCache]: Analyzing trace with hash -910394054, now seen corresponding path program 12 times [2024-06-03 19:39:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169946793] [2024-06-03 19:39:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:24,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:24,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169946793] [2024-06-03 19:39:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169946793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:24,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:24,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253736685] [2024-06-03 19:39:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:24,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:24,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:24,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 479 transitions, 7428 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:24,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:24,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:24,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:26,550 INFO L124 PetriNetUnfolderBase]: 4593/7060 cut-off events. [2024-06-03 19:39:26,550 INFO L125 PetriNetUnfolderBase]: For 1180893/1180931 co-relation queries the response was YES. [2024-06-03 19:39:26,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77611 conditions, 7060 events. 4593/7060 cut-off events. For 1180893/1180931 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39781 event pairs, 1180 based on Foata normal form. 18/7064 useless extension candidates. Maximal degree in co-relation 77469. Up to 6107 conditions per place. [2024-06-03 19:39:26,655 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 388 selfloop transitions, 120 changer transitions 0/518 dead transitions. [2024-06-03 19:39:26,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 518 transitions, 9078 flow [2024-06-03 19:39:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-03 19:39:26,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-03 19:39:26,657 INFO L175 Difference]: Start difference. First operand has 312 places, 479 transitions, 7428 flow. Second operand 9 states and 170 transitions. [2024-06-03 19:39:26,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 518 transitions, 9078 flow [2024-06-03 19:39:28,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 518 transitions, 8726 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-03 19:39:28,919 INFO L231 Difference]: Finished difference. Result has 314 places, 483 transitions, 7580 flow [2024-06-03 19:39:28,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7112, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7580, PETRI_PLACES=314, PETRI_TRANSITIONS=483} [2024-06-03 19:39:28,920 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 268 predicate places. [2024-06-03 19:39:28,920 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 483 transitions, 7580 flow [2024-06-03 19:39:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:28,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:39:28,920 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:28,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash -910390334, now seen corresponding path program 13 times [2024-06-03 19:39:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750484227] [2024-06-03 19:39:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:28,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750484227] [2024-06-03 19:39:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750484227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:30,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:30,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803154316] [2024-06-03 19:39:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:30,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:30,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:30,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:30,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:30,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 483 transitions, 7580 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:30,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:30,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:30,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:31,998 INFO L124 PetriNetUnfolderBase]: 4585/7052 cut-off events. [2024-06-03 19:39:31,998 INFO L125 PetriNetUnfolderBase]: For 1110219/1110257 co-relation queries the response was YES. [2024-06-03 19:39:32,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75846 conditions, 7052 events. 4585/7052 cut-off events. For 1110219/1110257 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39748 event pairs, 1196 based on Foata normal form. 18/7056 useless extension candidates. Maximal degree in co-relation 75703. Up to 6265 conditions per place. [2024-06-03 19:39:32,098 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 394 selfloop transitions, 112 changer transitions 0/516 dead transitions. [2024-06-03 19:39:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 516 transitions, 8720 flow [2024-06-03 19:39:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-03 19:39:32,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123456790123457 [2024-06-03 19:39:32,099 INFO L175 Difference]: Start difference. First operand has 314 places, 483 transitions, 7580 flow. Second operand 9 states and 167 transitions. [2024-06-03 19:39:32,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 516 transitions, 8720 flow [2024-06-03 19:39:34,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 516 transitions, 8420 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-03 19:39:34,534 INFO L231 Difference]: Finished difference. Result has 318 places, 483 transitions, 7524 flow [2024-06-03 19:39:34,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7524, PETRI_PLACES=318, PETRI_TRANSITIONS=483} [2024-06-03 19:39:34,535 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 272 predicate places. [2024-06-03 19:39:34,535 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 483 transitions, 7524 flow [2024-06-03 19:39:34,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:34,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:34,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:34,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:39:34,535 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:34,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2064532825, now seen corresponding path program 4 times [2024-06-03 19:39:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245325747] [2024-06-03 19:39:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245325747] [2024-06-03 19:39:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245325747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:35,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:35,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611127348] [2024-06-03 19:39:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:35,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:35,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:35,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 483 transitions, 7524 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:35,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:35,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:35,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:37,473 INFO L124 PetriNetUnfolderBase]: 4580/7061 cut-off events. [2024-06-03 19:39:37,473 INFO L125 PetriNetUnfolderBase]: For 1120314/1120352 co-relation queries the response was YES. [2024-06-03 19:39:37,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76000 conditions, 7061 events. 4580/7061 cut-off events. For 1120314/1120352 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40003 event pairs, 1188 based on Foata normal form. 16/7073 useless extension candidates. Maximal degree in co-relation 75855. Up to 6226 conditions per place. [2024-06-03 19:39:37,580 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 369 selfloop transitions, 140 changer transitions 0/519 dead transitions. [2024-06-03 19:39:37,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 519 transitions, 8794 flow [2024-06-03 19:39:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-03 19:39:37,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-03 19:39:37,581 INFO L175 Difference]: Start difference. First operand has 318 places, 483 transitions, 7524 flow. Second operand 9 states and 168 transitions. [2024-06-03 19:39:37,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 519 transitions, 8794 flow [2024-06-03 19:39:39,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 519 transitions, 8552 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:39:39,551 INFO L231 Difference]: Finished difference. Result has 319 places, 486 transitions, 7736 flow [2024-06-03 19:39:39,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7282, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7736, PETRI_PLACES=319, PETRI_TRANSITIONS=486} [2024-06-03 19:39:39,552 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 273 predicate places. [2024-06-03 19:39:39,552 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 486 transitions, 7736 flow [2024-06-03 19:39:39,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:39,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:39,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:39,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:39:39,553 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1392776920, now seen corresponding path program 14 times [2024-06-03 19:39:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674922319] [2024-06-03 19:39:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:40,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:40,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674922319] [2024-06-03 19:39:40,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674922319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:40,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:40,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:40,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776309632] [2024-06-03 19:39:40,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:40,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:41,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:41,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 486 transitions, 7736 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:41,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:41,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:42,679 INFO L124 PetriNetUnfolderBase]: 4599/7064 cut-off events. [2024-06-03 19:39:42,679 INFO L125 PetriNetUnfolderBase]: For 1158315/1158362 co-relation queries the response was YES. [2024-06-03 19:39:42,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77101 conditions, 7064 events. 4599/7064 cut-off events. For 1158315/1158362 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39684 event pairs, 886 based on Foata normal form. 22/7070 useless extension candidates. Maximal degree in co-relation 76955. Up to 6174 conditions per place. [2024-06-03 19:39:42,783 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 378 selfloop transitions, 132 changer transitions 0/520 dead transitions. [2024-06-03 19:39:42,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 520 transitions, 8992 flow [2024-06-03 19:39:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-03 19:39:42,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-03 19:39:42,785 INFO L175 Difference]: Start difference. First operand has 319 places, 486 transitions, 7736 flow. Second operand 9 states and 168 transitions. [2024-06-03 19:39:42,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 520 transitions, 8992 flow [2024-06-03 19:39:45,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 520 transitions, 8666 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-03 19:39:45,079 INFO L231 Difference]: Finished difference. Result has 321 places, 488 transitions, 7796 flow [2024-06-03 19:39:45,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7410, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7796, PETRI_PLACES=321, PETRI_TRANSITIONS=488} [2024-06-03 19:39:45,080 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 275 predicate places. [2024-06-03 19:39:45,080 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 488 transitions, 7796 flow [2024-06-03 19:39:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:45,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:45,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:39:45,081 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:45,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1392992401, now seen corresponding path program 2 times [2024-06-03 19:39:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400220780] [2024-06-03 19:39:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400220780] [2024-06-03 19:39:46,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400220780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:46,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915465250] [2024-06-03 19:39:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:46,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:39:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 488 transitions, 7796 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:46,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:46,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:39:46,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:48,531 INFO L124 PetriNetUnfolderBase]: 5059/7580 cut-off events. [2024-06-03 19:39:48,531 INFO L125 PetriNetUnfolderBase]: For 1135897/1135901 co-relation queries the response was YES. [2024-06-03 19:39:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79036 conditions, 7580 events. 5059/7580 cut-off events. For 1135897/1135901 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40950 event pairs, 1558 based on Foata normal form. 6/7578 useless extension candidates. Maximal degree in co-relation 78889. Up to 7294 conditions per place. [2024-06-03 19:39:48,643 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 476 selfloop transitions, 46 changer transitions 0/529 dead transitions. [2024-06-03 19:39:48,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 529 transitions, 9125 flow [2024-06-03 19:39:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:39:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:39:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-03 19:39:48,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-03 19:39:48,644 INFO L175 Difference]: Start difference. First operand has 321 places, 488 transitions, 7796 flow. Second operand 10 states and 168 transitions. [2024-06-03 19:39:48,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 529 transitions, 9125 flow [2024-06-03 19:39:50,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 529 transitions, 8760 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-03 19:39:50,646 INFO L231 Difference]: Finished difference. Result has 324 places, 497 transitions, 7716 flow [2024-06-03 19:39:50,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7431, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7716, PETRI_PLACES=324, PETRI_TRANSITIONS=497} [2024-06-03 19:39:50,647 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 278 predicate places. [2024-06-03 19:39:50,647 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 497 transitions, 7716 flow [2024-06-03 19:39:50,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:50,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:50,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:39:50,647 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:50,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1544639550, now seen corresponding path program 15 times [2024-06-03 19:39:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49788277] [2024-06-03 19:39:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:52,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:52,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49788277] [2024-06-03 19:39:52,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49788277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:52,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:52,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797102298] [2024-06-03 19:39:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:52,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:52,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:52,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:52,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 497 transitions, 7716 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:52,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:52,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:54,115 INFO L124 PetriNetUnfolderBase]: 4663/7152 cut-off events. [2024-06-03 19:39:54,115 INFO L125 PetriNetUnfolderBase]: For 1128208/1128221 co-relation queries the response was YES. [2024-06-03 19:39:54,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77123 conditions, 7152 events. 4663/7152 cut-off events. For 1128208/1128221 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40290 event pairs, 995 based on Foata normal form. 12/7146 useless extension candidates. Maximal degree in co-relation 76975. Up to 6256 conditions per place. [2024-06-03 19:39:54,212 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 395 selfloop transitions, 124 changer transitions 0/531 dead transitions. [2024-06-03 19:39:54,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 531 transitions, 8994 flow [2024-06-03 19:39:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-03 19:39:54,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-03 19:39:54,214 INFO L175 Difference]: Start difference. First operand has 324 places, 497 transitions, 7716 flow. Second operand 9 states and 169 transitions. [2024-06-03 19:39:54,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 531 transitions, 8994 flow [2024-06-03 19:39:56,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 531 transitions, 8846 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-03 19:39:56,133 INFO L231 Difference]: Finished difference. Result has 326 places, 499 transitions, 7942 flow [2024-06-03 19:39:56,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7568, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7942, PETRI_PLACES=326, PETRI_TRANSITIONS=499} [2024-06-03 19:39:56,133 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2024-06-03 19:39:56,133 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 499 transitions, 7942 flow [2024-06-03 19:39:56,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:56,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:39:56,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:39:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:39:56,133 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:39:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:39:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1404157942, now seen corresponding path program 16 times [2024-06-03 19:39:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:39:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753437399] [2024-06-03 19:39:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:39:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:39:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:39:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:39:57,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:39:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753437399] [2024-06-03 19:39:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753437399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:39:57,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:39:57,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:39:57,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062754334] [2024-06-03 19:39:57,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:39:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:39:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:39:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:39:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:39:57,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:39:57,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 499 transitions, 7942 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:39:57,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:39:57,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:39:57,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:39:59,353 INFO L124 PetriNetUnfolderBase]: 4697/7201 cut-off events. [2024-06-03 19:39:59,353 INFO L125 PetriNetUnfolderBase]: For 1164046/1164059 co-relation queries the response was YES. [2024-06-03 19:39:59,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78465 conditions, 7201 events. 4697/7201 cut-off events. For 1164046/1164059 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40535 event pairs, 995 based on Foata normal form. 12/7200 useless extension candidates. Maximal degree in co-relation 78316. Up to 6187 conditions per place. [2024-06-03 19:39:59,450 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 387 selfloop transitions, 134 changer transitions 0/533 dead transitions. [2024-06-03 19:39:59,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 533 transitions, 9224 flow [2024-06-03 19:39:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:39:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:39:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-03 19:39:59,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-03 19:39:59,451 INFO L175 Difference]: Start difference. First operand has 326 places, 499 transitions, 7942 flow. Second operand 9 states and 169 transitions. [2024-06-03 19:39:59,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 533 transitions, 9224 flow [2024-06-03 19:40:01,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 533 transitions, 8870 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:01,865 INFO L231 Difference]: Finished difference. Result has 328 places, 501 transitions, 7986 flow [2024-06-03 19:40:01,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7592, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7986, PETRI_PLACES=328, PETRI_TRANSITIONS=501} [2024-06-03 19:40:01,866 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 282 predicate places. [2024-06-03 19:40:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 501 transitions, 7986 flow [2024-06-03 19:40:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:01,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:01,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:01,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:40:01,866 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)] === [2024-06-03 19:40:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash -651711659, now seen corresponding path program 4 times [2024-06-03 19:40:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30314424] [2024-06-03 19:40:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30314424] [2024-06-03 19:40:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30314424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:02,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:02,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:40:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140621918] [2024-06-03 19:40:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:02,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:40:02,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:40:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:40:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:40:02,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 501 transitions, 7986 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:02,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:02,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:40:02,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:04,839 INFO L124 PetriNetUnfolderBase]: 4805/7333 cut-off events. [2024-06-03 19:40:04,839 INFO L125 PetriNetUnfolderBase]: For 1167714/1167740 co-relation queries the response was YES. [2024-06-03 19:40:04,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77675 conditions, 7333 events. 4805/7333 cut-off events. For 1167714/1167740 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 41012 event pairs, 1447 based on Foata normal form. 7/7295 useless extension candidates. Maximal degree in co-relation 77525. Up to 6627 conditions per place. [2024-06-03 19:40:04,936 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 386 selfloop transitions, 93 changer transitions 0/528 dead transitions. [2024-06-03 19:40:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 528 transitions, 9258 flow [2024-06-03 19:40:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:40:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:40:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-03 19:40:04,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2024-06-03 19:40:04,937 INFO L175 Difference]: Start difference. First operand has 328 places, 501 transitions, 7986 flow. Second operand 7 states and 134 transitions. [2024-06-03 19:40:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 528 transitions, 9258 flow [2024-06-03 19:40:07,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 528 transitions, 8846 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-03 19:40:07,088 INFO L231 Difference]: Finished difference. Result has 326 places, 506 transitions, 7881 flow [2024-06-03 19:40:07,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7576, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7881, PETRI_PLACES=326, PETRI_TRANSITIONS=506} [2024-06-03 19:40:07,088 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2024-06-03 19:40:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 506 transitions, 7881 flow [2024-06-03 19:40:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:07,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:07,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:07,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:40:07,088 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)] === [2024-06-03 19:40:07,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -251856299, now seen corresponding path program 5 times [2024-06-03 19:40:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:07,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022018073] [2024-06-03 19:40:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022018073] [2024-06-03 19:40:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022018073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:08,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:40:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761445521] [2024-06-03 19:40:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:40:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:40:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:40:08,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:40:08,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 506 transitions, 7881 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:08,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:08,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:40:08,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:10,105 INFO L124 PetriNetUnfolderBase]: 4811/7335 cut-off events. [2024-06-03 19:40:10,105 INFO L125 PetriNetUnfolderBase]: For 1149520/1149548 co-relation queries the response was YES. [2024-06-03 19:40:10,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77043 conditions, 7335 events. 4811/7335 cut-off events. For 1149520/1149548 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 40809 event pairs, 1107 based on Foata normal form. 10/7309 useless extension candidates. Maximal degree in co-relation 76894. Up to 6631 conditions per place. [2024-06-03 19:40:10,205 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 384 selfloop transitions, 96 changer transitions 0/529 dead transitions. [2024-06-03 19:40:10,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 529 transitions, 9152 flow [2024-06-03 19:40:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:40:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:40:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-03 19:40:10,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-03 19:40:10,206 INFO L175 Difference]: Start difference. First operand has 326 places, 506 transitions, 7881 flow. Second operand 7 states and 130 transitions. [2024-06-03 19:40:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 529 transitions, 9152 flow [2024-06-03 19:40:12,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 529 transitions, 8949 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-03 19:40:12,319 INFO L231 Difference]: Finished difference. Result has 327 places, 511 transitions, 7981 flow [2024-06-03 19:40:12,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7691, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7981, PETRI_PLACES=327, PETRI_TRANSITIONS=511} [2024-06-03 19:40:12,320 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 281 predicate places. [2024-06-03 19:40:12,320 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 511 transitions, 7981 flow [2024-06-03 19:40:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:12,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:12,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:40:12,320 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)] === [2024-06-03 19:40:12,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2013872669, now seen corresponding path program 2 times [2024-06-03 19:40:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:12,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102970430] [2024-06-03 19:40:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102970430] [2024-06-03 19:40:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102970430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:13,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:40:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504823757] [2024-06-03 19:40:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:13,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:40:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:13,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:40:13,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:40:13,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:13,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 511 transitions, 7981 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:13,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:13,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:13,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:15,306 INFO L124 PetriNetUnfolderBase]: 4960/7488 cut-off events. [2024-06-03 19:40:15,306 INFO L125 PetriNetUnfolderBase]: For 1119620/1119644 co-relation queries the response was YES. [2024-06-03 19:40:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77267 conditions, 7488 events. 4960/7488 cut-off events. For 1119620/1119644 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41097 event pairs, 1581 based on Foata normal form. 5/7458 useless extension candidates. Maximal degree in co-relation 77119. Up to 7063 conditions per place. [2024-06-03 19:40:15,404 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 447 selfloop transitions, 37 changer transitions 0/529 dead transitions. [2024-06-03 19:40:15,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 529 transitions, 9193 flow [2024-06-03 19:40:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:40:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:40:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-03 19:40:15,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38412698412698415 [2024-06-03 19:40:15,405 INFO L175 Difference]: Start difference. First operand has 327 places, 511 transitions, 7981 flow. Second operand 7 states and 121 transitions. [2024-06-03 19:40:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 529 transitions, 9193 flow [2024-06-03 19:40:17,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 529 transitions, 9007 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-03 19:40:17,329 INFO L231 Difference]: Finished difference. Result has 329 places, 514 transitions, 7929 flow [2024-06-03 19:40:17,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7797, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7929, PETRI_PLACES=329, PETRI_TRANSITIONS=514} [2024-06-03 19:40:17,329 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 283 predicate places. [2024-06-03 19:40:17,329 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 514 transitions, 7929 flow [2024-06-03 19:40:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:17,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:17,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:17,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:40:17,330 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:17,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash -92946369, now seen corresponding path program 3 times [2024-06-03 19:40:17,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:17,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020229522] [2024-06-03 19:40:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020229522] [2024-06-03 19:40:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020229522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:18,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:18,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719325145] [2024-06-03 19:40:18,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:18,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:18,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 514 transitions, 7929 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:18,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:18,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:20,699 INFO L124 PetriNetUnfolderBase]: 5105/7669 cut-off events. [2024-06-03 19:40:20,699 INFO L125 PetriNetUnfolderBase]: For 1130263/1130275 co-relation queries the response was YES. [2024-06-03 19:40:20,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78739 conditions, 7669 events. 5105/7669 cut-off events. For 1130263/1130275 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 41674 event pairs, 1454 based on Foata normal form. 10/7673 useless extension candidates. Maximal degree in co-relation 78591. Up to 7242 conditions per place. [2024-06-03 19:40:20,804 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 471 selfloop transitions, 78 changer transitions 0/557 dead transitions. [2024-06-03 19:40:20,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 557 transitions, 9335 flow [2024-06-03 19:40:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:40:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:40:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-03 19:40:20,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-03 19:40:20,805 INFO L175 Difference]: Start difference. First operand has 329 places, 514 transitions, 7929 flow. Second operand 10 states and 170 transitions. [2024-06-03 19:40:20,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 557 transitions, 9335 flow [2024-06-03 19:40:23,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 557 transitions, 9246 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-03 19:40:23,195 INFO L231 Difference]: Finished difference. Result has 335 places, 527 transitions, 8222 flow [2024-06-03 19:40:23,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7840, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8222, PETRI_PLACES=335, PETRI_TRANSITIONS=527} [2024-06-03 19:40:23,196 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 289 predicate places. [2024-06-03 19:40:23,196 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 527 transitions, 8222 flow [2024-06-03 19:40:23,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:23,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:23,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:23,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:40:23,197 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:23,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -351225039, now seen corresponding path program 4 times [2024-06-03 19:40:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106444100] [2024-06-03 19:40:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106444100] [2024-06-03 19:40:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106444100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:24,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104756982] [2024-06-03 19:40:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:24,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:24,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:24,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 527 transitions, 8222 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:24,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:24,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:24,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:26,461 INFO L124 PetriNetUnfolderBase]: 5116/7680 cut-off events. [2024-06-03 19:40:26,461 INFO L125 PetriNetUnfolderBase]: For 1134693/1134711 co-relation queries the response was YES. [2024-06-03 19:40:26,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79451 conditions, 7680 events. 5116/7680 cut-off events. For 1134693/1134711 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 41550 event pairs, 900 based on Foata normal form. 14/7674 useless extension candidates. Maximal degree in co-relation 79302. Up to 5612 conditions per place. [2024-06-03 19:40:26,566 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 285 selfloop transitions, 305 changer transitions 0/598 dead transitions. [2024-06-03 19:40:26,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 598 transitions, 10179 flow [2024-06-03 19:40:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:40:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:40:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-03 19:40:26,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:40:26,567 INFO L175 Difference]: Start difference. First operand has 335 places, 527 transitions, 8222 flow. Second operand 10 states and 185 transitions. [2024-06-03 19:40:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 598 transitions, 10179 flow [2024-06-03 19:40:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 598 transitions, 10005 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-03 19:40:28,392 INFO L231 Difference]: Finished difference. Result has 341 places, 561 transitions, 9109 flow [2024-06-03 19:40:28,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8050, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9109, PETRI_PLACES=341, PETRI_TRANSITIONS=561} [2024-06-03 19:40:28,392 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 295 predicate places. [2024-06-03 19:40:28,393 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 561 transitions, 9109 flow [2024-06-03 19:40:28,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:28,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:28,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:28,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:40:28,393 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:28,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash -769841905, now seen corresponding path program 5 times [2024-06-03 19:40:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759063889] [2024-06-03 19:40:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759063889] [2024-06-03 19:40:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759063889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:29,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523572065] [2024-06-03 19:40:29,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:29,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:29,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 561 transitions, 9109 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:29,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:29,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:29,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:31,760 INFO L124 PetriNetUnfolderBase]: 5149/7727 cut-off events. [2024-06-03 19:40:31,761 INFO L125 PetriNetUnfolderBase]: For 1170725/1170743 co-relation queries the response was YES. [2024-06-03 19:40:31,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81722 conditions, 7727 events. 5149/7727 cut-off events. For 1170725/1170743 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41813 event pairs, 905 based on Foata normal form. 18/7725 useless extension candidates. Maximal degree in co-relation 81571. Up to 5955 conditions per place. [2024-06-03 19:40:31,867 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 320 selfloop transitions, 277 changer transitions 0/605 dead transitions. [2024-06-03 19:40:31,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 605 transitions, 10606 flow [2024-06-03 19:40:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:40:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:40:31,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-03 19:40:31,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-03 19:40:31,868 INFO L175 Difference]: Start difference. First operand has 341 places, 561 transitions, 9109 flow. Second operand 10 states and 185 transitions. [2024-06-03 19:40:31,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 605 transitions, 10606 flow [2024-06-03 19:40:34,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 605 transitions, 10333 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-03 19:40:34,761 INFO L231 Difference]: Finished difference. Result has 348 places, 569 transitions, 9571 flow [2024-06-03 19:40:34,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8838, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9571, PETRI_PLACES=348, PETRI_TRANSITIONS=569} [2024-06-03 19:40:34,762 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 302 predicate places. [2024-06-03 19:40:34,762 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 569 transitions, 9571 flow [2024-06-03 19:40:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:34,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:34,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:40:34,762 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:34,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 827475196, now seen corresponding path program 17 times [2024-06-03 19:40:34,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:34,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416126727] [2024-06-03 19:40:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416126727] [2024-06-03 19:40:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416126727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:36,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683622383] [2024-06-03 19:40:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:36,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:36,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:36,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:40:36,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 569 transitions, 9571 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:36,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:36,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:40:36,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:38,074 INFO L124 PetriNetUnfolderBase]: 4858/7428 cut-off events. [2024-06-03 19:40:38,074 INFO L125 PetriNetUnfolderBase]: For 1188838/1188866 co-relation queries the response was YES. [2024-06-03 19:40:38,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81975 conditions, 7428 events. 4858/7428 cut-off events. For 1188838/1188866 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41633 event pairs, 884 based on Foata normal form. 16/7408 useless extension candidates. Maximal degree in co-relation 81821. Up to 6394 conditions per place. [2024-06-03 19:40:38,184 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 434 selfloop transitions, 150 changer transitions 0/601 dead transitions. [2024-06-03 19:40:38,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 601 transitions, 10977 flow [2024-06-03 19:40:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:40:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:40:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-03 19:40:38,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-03 19:40:38,185 INFO L175 Difference]: Start difference. First operand has 348 places, 569 transitions, 9571 flow. Second operand 9 states and 168 transitions. [2024-06-03 19:40:38,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 601 transitions, 10977 flow [2024-06-03 19:40:40,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 601 transitions, 10490 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-03 19:40:40,861 INFO L231 Difference]: Finished difference. Result has 352 places, 571 transitions, 9511 flow [2024-06-03 19:40:40,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9511, PETRI_PLACES=352, PETRI_TRANSITIONS=571} [2024-06-03 19:40:40,861 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 306 predicate places. [2024-06-03 19:40:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 571 transitions, 9511 flow [2024-06-03 19:40:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:40,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:40,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:40:40,862 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:40,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash -891247675, now seen corresponding path program 6 times [2024-06-03 19:40:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495000979] [2024-06-03 19:40:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:40,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:42,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495000979] [2024-06-03 19:40:42,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495000979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:42,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:42,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115039665] [2024-06-03 19:40:42,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:42,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:42,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:42,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:42,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:42,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:42,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 571 transitions, 9511 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:42,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:42,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:44,228 INFO L124 PetriNetUnfolderBase]: 5145/7723 cut-off events. [2024-06-03 19:40:44,228 INFO L125 PetriNetUnfolderBase]: For 1216860/1216878 co-relation queries the response was YES. [2024-06-03 19:40:44,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82466 conditions, 7723 events. 5145/7723 cut-off events. For 1216860/1216878 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41890 event pairs, 940 based on Foata normal form. 18/7721 useless extension candidates. Maximal degree in co-relation 82311. Up to 5941 conditions per place. [2024-06-03 19:40:44,342 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 341 selfloop transitions, 260 changer transitions 0/609 dead transitions. [2024-06-03 19:40:44,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 609 transitions, 10896 flow [2024-06-03 19:40:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:40:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:40:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-03 19:40:44,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-03 19:40:44,343 INFO L175 Difference]: Start difference. First operand has 352 places, 571 transitions, 9511 flow. Second operand 10 states and 186 transitions. [2024-06-03 19:40:44,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 609 transitions, 10896 flow [2024-06-03 19:40:47,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 609 transitions, 10413 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:47,553 INFO L231 Difference]: Finished difference. Result has 356 places, 573 transitions, 9601 flow [2024-06-03 19:40:47,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9601, PETRI_PLACES=356, PETRI_TRANSITIONS=573} [2024-06-03 19:40:47,554 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 310 predicate places. [2024-06-03 19:40:47,554 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 573 transitions, 9601 flow [2024-06-03 19:40:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:47,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:47,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:40:47,554 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:47,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash 633751267, now seen corresponding path program 7 times [2024-06-03 19:40:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441889923] [2024-06-03 19:40:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441889923] [2024-06-03 19:40:48,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441889923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:48,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:48,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:48,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463558282] [2024-06-03 19:40:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:48,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:49,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:40:49,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 573 transitions, 9601 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:49,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:49,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:40:49,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:50,974 INFO L124 PetriNetUnfolderBase]: 5124/7692 cut-off events. [2024-06-03 19:40:50,974 INFO L125 PetriNetUnfolderBase]: For 1227138/1227156 co-relation queries the response was YES. [2024-06-03 19:40:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82307 conditions, 7692 events. 5124/7692 cut-off events. For 1227138/1227156 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41683 event pairs, 1024 based on Foata normal form. 18/7690 useless extension candidates. Maximal degree in co-relation 82150. Up to 5900 conditions per place. [2024-06-03 19:40:51,089 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 353 selfloop transitions, 249 changer transitions 0/610 dead transitions. [2024-06-03 19:40:51,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 610 transitions, 10974 flow [2024-06-03 19:40:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:40:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:40:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-03 19:40:51,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-03 19:40:51,091 INFO L175 Difference]: Start difference. First operand has 356 places, 573 transitions, 9601 flow. Second operand 10 states and 187 transitions. [2024-06-03 19:40:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 610 transitions, 10974 flow [2024-06-03 19:40:53,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 610 transitions, 10487 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-03 19:40:53,988 INFO L231 Difference]: Finished difference. Result has 360 places, 574 transitions, 9653 flow [2024-06-03 19:40:53,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9114, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9653, PETRI_PLACES=360, PETRI_TRANSITIONS=574} [2024-06-03 19:40:53,989 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 314 predicate places. [2024-06-03 19:40:53,989 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 574 transitions, 9653 flow [2024-06-03 19:40:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:53,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:40:53,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:40:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:40:53,989 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:40:53,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:40:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1166139812, now seen corresponding path program 18 times [2024-06-03 19:40:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:40:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062242590] [2024-06-03 19:40:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:40:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:40:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:40:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:40:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:40:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062242590] [2024-06-03 19:40:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062242590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:40:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:40:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:40:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419830754] [2024-06-03 19:40:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:40:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:40:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:40:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:40:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:40:55,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:40:55,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 574 transitions, 9653 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:40:55,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:40:55,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:40:55,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:40:57,304 INFO L124 PetriNetUnfolderBase]: 4841/7406 cut-off events. [2024-06-03 19:40:57,305 INFO L125 PetriNetUnfolderBase]: For 1244275/1244298 co-relation queries the response was YES. [2024-06-03 19:40:57,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81653 conditions, 7406 events. 4841/7406 cut-off events. For 1244275/1244298 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 41554 event pairs, 910 based on Foata normal form. 16/7393 useless extension candidates. Maximal degree in co-relation 81494. Up to 6372 conditions per place. [2024-06-03 19:40:57,423 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 449 selfloop transitions, 138 changer transitions 0/607 dead transitions. [2024-06-03 19:40:57,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 607 transitions, 11075 flow [2024-06-03 19:40:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:40:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:40:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-03 19:40:57,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-03 19:40:57,425 INFO L175 Difference]: Start difference. First operand has 360 places, 574 transitions, 9653 flow. Second operand 9 states and 171 transitions. [2024-06-03 19:40:57,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 607 transitions, 11075 flow [2024-06-03 19:41:00,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 607 transitions, 10647 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:41:00,436 INFO L231 Difference]: Finished difference. Result has 360 places, 576 transitions, 9632 flow [2024-06-03 19:41:00,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9632, PETRI_PLACES=360, PETRI_TRANSITIONS=576} [2024-06-03 19:41:00,437 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 314 predicate places. [2024-06-03 19:41:00,437 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 576 transitions, 9632 flow [2024-06-03 19:41:00,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:00,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:00,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:00,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:41:00,437 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:41:00,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:00,438 INFO L85 PathProgramCache]: Analyzing trace with hash 628029256, now seen corresponding path program 19 times [2024-06-03 19:41:00,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:00,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913374952] [2024-06-03 19:41:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:00,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913374952] [2024-06-03 19:41:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913374952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:01,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:41:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049976572] [2024-06-03 19:41:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:41:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:41:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:41:01,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:01,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 576 transitions, 9632 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:01,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:01,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:01,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:03,715 INFO L124 PetriNetUnfolderBase]: 4858/7433 cut-off events. [2024-06-03 19:41:03,715 INFO L125 PetriNetUnfolderBase]: For 1280233/1280256 co-relation queries the response was YES. [2024-06-03 19:41:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81965 conditions, 7433 events. 4858/7433 cut-off events. For 1280233/1280256 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 41758 event pairs, 910 based on Foata normal form. 16/7420 useless extension candidates. Maximal degree in co-relation 81806. Up to 6399 conditions per place. [2024-06-03 19:41:03,831 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 449 selfloop transitions, 139 changer transitions 0/608 dead transitions. [2024-06-03 19:41:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 608 transitions, 11054 flow [2024-06-03 19:41:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:41:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:41:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-03 19:41:03,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-03 19:41:03,832 INFO L175 Difference]: Start difference. First operand has 360 places, 576 transitions, 9632 flow. Second operand 9 states and 169 transitions. [2024-06-03 19:41:03,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 608 transitions, 11054 flow [2024-06-03 19:41:06,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 608 transitions, 10665 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-03 19:41:06,666 INFO L231 Difference]: Finished difference. Result has 362 places, 578 transitions, 9656 flow [2024-06-03 19:41:06,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9243, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9656, PETRI_PLACES=362, PETRI_TRANSITIONS=578} [2024-06-03 19:41:06,667 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 316 predicate places. [2024-06-03 19:41:06,667 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 578 transitions, 9656 flow [2024-06-03 19:41:06,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:06,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:06,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:41:06,667 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:41:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 628025536, now seen corresponding path program 20 times [2024-06-03 19:41:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640129228] [2024-06-03 19:41:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:08,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640129228] [2024-06-03 19:41:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640129228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:41:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897091986] [2024-06-03 19:41:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:08,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:41:08,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:41:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:41:08,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:08,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 578 transitions, 9656 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:08,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:08,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:08,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:09,990 INFO L124 PetriNetUnfolderBase]: 4850/7421 cut-off events. [2024-06-03 19:41:09,990 INFO L125 PetriNetUnfolderBase]: For 1295498/1295521 co-relation queries the response was YES. [2024-06-03 19:41:10,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81723 conditions, 7421 events. 4850/7421 cut-off events. For 1295498/1295521 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 41596 event pairs, 913 based on Foata normal form. 16/7408 useless extension candidates. Maximal degree in co-relation 81563. Up to 6310 conditions per place. [2024-06-03 19:41:10,113 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 444 selfloop transitions, 146 changer transitions 0/610 dead transitions. [2024-06-03 19:41:10,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 610 transitions, 11082 flow [2024-06-03 19:41:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:41:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:41:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-03 19:41:10,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-03 19:41:10,114 INFO L175 Difference]: Start difference. First operand has 362 places, 578 transitions, 9656 flow. Second operand 9 states and 169 transitions. [2024-06-03 19:41:10,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 610 transitions, 11082 flow [2024-06-03 19:41:13,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 610 transitions, 10687 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-03 19:41:13,104 INFO L231 Difference]: Finished difference. Result has 364 places, 580 transitions, 9692 flow [2024-06-03 19:41:13,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9261, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9692, PETRI_PLACES=364, PETRI_TRANSITIONS=580} [2024-06-03 19:41:13,105 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 318 predicate places. [2024-06-03 19:41:13,105 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 580 transitions, 9692 flow [2024-06-03 19:41:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:13,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:13,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:41:13,106 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)] === [2024-06-03 19:41:13,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1810222187, now seen corresponding path program 3 times [2024-06-03 19:41:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:13,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141523838] [2024-06-03 19:41:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:14,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:14,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141523838] [2024-06-03 19:41:14,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141523838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:14,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:14,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:41:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950121165] [2024-06-03 19:41:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:14,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:41:14,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:41:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:41:14,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:41:14,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 580 transitions, 9692 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:14,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:14,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:41:14,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:16,114 INFO L124 PetriNetUnfolderBase]: 5022/7588 cut-off events. [2024-06-03 19:41:16,114 INFO L125 PetriNetUnfolderBase]: For 1314652/1314684 co-relation queries the response was YES. [2024-06-03 19:41:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81493 conditions, 7588 events. 5022/7588 cut-off events. For 1314652/1314684 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41846 event pairs, 1462 based on Foata normal form. 9/7558 useless extension candidates. Maximal degree in co-relation 81332. Up to 7145 conditions per place. [2024-06-03 19:41:16,229 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 506 selfloop transitions, 38 changer transitions 0/593 dead transitions. [2024-06-03 19:41:16,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 593 transitions, 11023 flow [2024-06-03 19:41:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-03 19:41:16,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-03 19:41:16,230 INFO L175 Difference]: Start difference. First operand has 364 places, 580 transitions, 9692 flow. Second operand 7 states and 115 transitions. [2024-06-03 19:41:16,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 593 transitions, 11023 flow [2024-06-03 19:41:19,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 593 transitions, 10610 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-03 19:41:19,183 INFO L231 Difference]: Finished difference. Result has 364 places, 583 transitions, 9412 flow [2024-06-03 19:41:19,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9279, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9412, PETRI_PLACES=364, PETRI_TRANSITIONS=583} [2024-06-03 19:41:19,183 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 318 predicate places. [2024-06-03 19:41:19,184 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 583 transitions, 9412 flow [2024-06-03 19:41:19,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:19,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:19,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:41:19,184 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)] === [2024-06-03 19:41:19,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1810222621, now seen corresponding path program 6 times [2024-06-03 19:41:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58458035] [2024-06-03 19:41:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:20,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:20,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58458035] [2024-06-03 19:41:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58458035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:20,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:41:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165035399] [2024-06-03 19:41:20,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:20,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:41:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:20,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:41:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:41:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 583 transitions, 9412 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:22,154 INFO L124 PetriNetUnfolderBase]: 4840/7404 cut-off events. [2024-06-03 19:41:22,154 INFO L125 PetriNetUnfolderBase]: For 1330367/1330405 co-relation queries the response was YES. [2024-06-03 19:41:22,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79641 conditions, 7404 events. 4840/7404 cut-off events. For 1330367/1330405 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 41429 event pairs, 1010 based on Foata normal form. 14/7370 useless extension candidates. Maximal degree in co-relation 79479. Up to 6662 conditions per place. [2024-06-03 19:41:22,270 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 445 selfloop transitions, 94 changer transitions 0/594 dead transitions. [2024-06-03 19:41:22,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 594 transitions, 10531 flow [2024-06-03 19:41:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-03 19:41:22,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-03 19:41:22,271 INFO L175 Difference]: Start difference. First operand has 364 places, 583 transitions, 9412 flow. Second operand 7 states and 123 transitions. [2024-06-03 19:41:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 594 transitions, 10531 flow [2024-06-03 19:41:25,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 594 transitions, 10365 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-03 19:41:25,366 INFO L231 Difference]: Finished difference. Result has 366 places, 583 transitions, 9442 flow [2024-06-03 19:41:25,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9246, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9442, PETRI_PLACES=366, PETRI_TRANSITIONS=583} [2024-06-03 19:41:25,367 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 320 predicate places. [2024-06-03 19:41:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 583 transitions, 9442 flow [2024-06-03 19:41:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:25,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:25,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:25,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:41:25,367 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)] === [2024-06-03 19:41:25,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1474826181, now seen corresponding path program 4 times [2024-06-03 19:41:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253809861] [2024-06-03 19:41:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253809861] [2024-06-03 19:41:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253809861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:26,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:41:26,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627072897] [2024-06-03 19:41:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:41:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:41:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:41:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:41:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 583 transitions, 9442 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:26,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:26,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:41:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:28,469 INFO L124 PetriNetUnfolderBase]: 5013/7576 cut-off events. [2024-06-03 19:41:28,469 INFO L125 PetriNetUnfolderBase]: For 1352429/1352461 co-relation queries the response was YES. [2024-06-03 19:41:28,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81108 conditions, 7576 events. 5013/7576 cut-off events. For 1352429/1352461 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41773 event pairs, 1461 based on Foata normal form. 9/7546 useless extension candidates. Maximal degree in co-relation 80945. Up to 7134 conditions per place. [2024-06-03 19:41:28,592 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 503 selfloop transitions, 40 changer transitions 0/592 dead transitions. [2024-06-03 19:41:28,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 592 transitions, 10556 flow [2024-06-03 19:41:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-03 19:41:28,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35873015873015873 [2024-06-03 19:41:28,593 INFO L175 Difference]: Start difference. First operand has 366 places, 583 transitions, 9442 flow. Second operand 7 states and 113 transitions. [2024-06-03 19:41:28,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 592 transitions, 10556 flow [2024-06-03 19:41:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 592 transitions, 10218 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:41:31,569 INFO L231 Difference]: Finished difference. Result has 366 places, 583 transitions, 9190 flow [2024-06-03 19:41:31,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9190, PETRI_PLACES=366, PETRI_TRANSITIONS=583} [2024-06-03 19:41:31,570 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 320 predicate places. [2024-06-03 19:41:31,570 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 583 transitions, 9190 flow [2024-06-03 19:41:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:31,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:31,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:41:31,570 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)] === [2024-06-03 19:41:31,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -248419079, now seen corresponding path program 1 times [2024-06-03 19:41:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478562354] [2024-06-03 19:41:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:31,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478562354] [2024-06-03 19:41:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478562354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:41:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701679233] [2024-06-03 19:41:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:32,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:41:32,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:41:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:41:32,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:32,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 583 transitions, 9190 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:34,339 INFO L124 PetriNetUnfolderBase]: 4812/7378 cut-off events. [2024-06-03 19:41:34,339 INFO L125 PetriNetUnfolderBase]: For 1212465/1212465 co-relation queries the response was YES. [2024-06-03 19:41:34,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76346 conditions, 7378 events. 4812/7378 cut-off events. For 1212465/1212465 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 41292 event pairs, 1613 based on Foata normal form. 1/7377 useless extension candidates. Maximal degree in co-relation 76182. Up to 7027 conditions per place. [2024-06-03 19:41:34,463 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 570 selfloop transitions, 25 changer transitions 0/605 dead transitions. [2024-06-03 19:41:34,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 605 transitions, 10750 flow [2024-06-03 19:41:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-03 19:41:34,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:41:34,464 INFO L175 Difference]: Start difference. First operand has 366 places, 583 transitions, 9190 flow. Second operand 7 states and 126 transitions. [2024-06-03 19:41:34,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 605 transitions, 10750 flow [2024-06-03 19:41:37,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 605 transitions, 10660 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:41:37,798 INFO L231 Difference]: Finished difference. Result has 367 places, 589 transitions, 9306 flow [2024-06-03 19:41:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9100, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9306, PETRI_PLACES=367, PETRI_TRANSITIONS=589} [2024-06-03 19:41:37,798 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 321 predicate places. [2024-06-03 19:41:37,799 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 589 transitions, 9306 flow [2024-06-03 19:41:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:37,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:37,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:41:37,799 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)] === [2024-06-03 19:41:37,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash -248239589, now seen corresponding path program 2 times [2024-06-03 19:41:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29934411] [2024-06-03 19:41:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:38,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:38,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29934411] [2024-06-03 19:41:38,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29934411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:38,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:38,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:41:38,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336164708] [2024-06-03 19:41:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:38,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:41:38,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:41:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:41:38,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:38,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 589 transitions, 9306 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:38,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:38,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:38,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:40,592 INFO L124 PetriNetUnfolderBase]: 4817/7385 cut-off events. [2024-06-03 19:41:40,593 INFO L125 PetriNetUnfolderBase]: For 1239954/1239954 co-relation queries the response was YES. [2024-06-03 19:41:40,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77048 conditions, 7385 events. 4817/7385 cut-off events. For 1239954/1239954 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41366 event pairs, 1613 based on Foata normal form. 1/7384 useless extension candidates. Maximal degree in co-relation 76883. Up to 7033 conditions per place. [2024-06-03 19:41:40,715 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 568 selfloop transitions, 27 changer transitions 0/605 dead transitions. [2024-06-03 19:41:40,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 605 transitions, 10788 flow [2024-06-03 19:41:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-03 19:41:40,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-06-03 19:41:40,716 INFO L175 Difference]: Start difference. First operand has 367 places, 589 transitions, 9306 flow. Second operand 7 states and 124 transitions. [2024-06-03 19:41:40,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 605 transitions, 10788 flow [2024-06-03 19:41:44,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 605 transitions, 10679 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-03 19:41:44,016 INFO L231 Difference]: Finished difference. Result has 371 places, 592 transitions, 9335 flow [2024-06-03 19:41:44,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9209, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9335, PETRI_PLACES=371, PETRI_TRANSITIONS=592} [2024-06-03 19:41:44,016 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 325 predicate places. [2024-06-03 19:41:44,016 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 592 transitions, 9335 flow [2024-06-03 19:41:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:44,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:44,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:41:44,016 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)] === [2024-06-03 19:41:44,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash -248239341, now seen corresponding path program 1 times [2024-06-03 19:41:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381978875] [2024-06-03 19:41:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:45,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381978875] [2024-06-03 19:41:45,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381978875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:45,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:45,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:41:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717533202] [2024-06-03 19:41:45,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:41:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:41:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:41:45,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:45,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 592 transitions, 9335 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:45,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:45,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:45,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:46,771 INFO L124 PetriNetUnfolderBase]: 4712/7255 cut-off events. [2024-06-03 19:41:46,772 INFO L125 PetriNetUnfolderBase]: For 1261982/1262017 co-relation queries the response was YES. [2024-06-03 19:41:46,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75928 conditions, 7255 events. 4712/7255 cut-off events. For 1261982/1262017 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41046 event pairs, 1593 based on Foata normal form. 16/7224 useless extension candidates. Maximal degree in co-relation 75761. Up to 6708 conditions per place. [2024-06-03 19:41:46,888 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 534 selfloop transitions, 24 changer transitions 0/611 dead transitions. [2024-06-03 19:41:46,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 611 transitions, 10787 flow [2024-06-03 19:41:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-03 19:41:46,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-06-03 19:41:46,889 INFO L175 Difference]: Start difference. First operand has 371 places, 592 transitions, 9335 flow. Second operand 7 states and 124 transitions. [2024-06-03 19:41:46,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 611 transitions, 10787 flow [2024-06-03 19:41:50,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 611 transitions, 10695 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-03 19:41:50,227 INFO L231 Difference]: Finished difference. Result has 374 places, 598 transitions, 9423 flow [2024-06-03 19:41:50,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9243, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9423, PETRI_PLACES=374, PETRI_TRANSITIONS=598} [2024-06-03 19:41:50,228 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 328 predicate places. [2024-06-03 19:41:50,228 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 598 transitions, 9423 flow [2024-06-03 19:41:50,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:50,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:50,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:41:50,228 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)] === [2024-06-03 19:41:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1490264923, now seen corresponding path program 2 times [2024-06-03 19:41:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:50,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788872010] [2024-06-03 19:41:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:51,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788872010] [2024-06-03 19:41:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788872010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:51,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:51,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:41:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999487241] [2024-06-03 19:41:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:41:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:41:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:41:51,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:51,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 598 transitions, 9423 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:51,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:51,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:51,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:52,949 INFO L124 PetriNetUnfolderBase]: 4717/7262 cut-off events. [2024-06-03 19:41:52,949 INFO L125 PetriNetUnfolderBase]: For 1289610/1289645 co-relation queries the response was YES. [2024-06-03 19:41:53,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76614 conditions, 7262 events. 4717/7262 cut-off events. For 1289610/1289645 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41040 event pairs, 1591 based on Foata normal form. 16/7231 useless extension candidates. Maximal degree in co-relation 76446. Up to 6736 conditions per place. [2024-06-03 19:41:53,068 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 542 selfloop transitions, 15 changer transitions 0/610 dead transitions. [2024-06-03 19:41:53,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 610 transitions, 10631 flow [2024-06-03 19:41:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-03 19:41:53,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682539682539683 [2024-06-03 19:41:53,069 INFO L175 Difference]: Start difference. First operand has 374 places, 598 transitions, 9423 flow. Second operand 7 states and 116 transitions. [2024-06-03 19:41:53,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 610 transitions, 10631 flow [2024-06-03 19:41:56,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 610 transitions, 10554 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-03 19:41:56,550 INFO L231 Difference]: Finished difference. Result has 378 places, 601 transitions, 9454 flow [2024-06-03 19:41:56,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9350, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9454, PETRI_PLACES=378, PETRI_TRANSITIONS=601} [2024-06-03 19:41:56,550 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 332 predicate places. [2024-06-03 19:41:56,550 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 601 transitions, 9454 flow [2024-06-03 19:41:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:56,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:41:56,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:41:56,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:41:56,551 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)] === [2024-06-03 19:41:56,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:41:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1474535463, now seen corresponding path program 3 times [2024-06-03 19:41:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:41:56,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481206699] [2024-06-03 19:41:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:41:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:41:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:41:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:41:57,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:41:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481206699] [2024-06-03 19:41:57,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481206699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:41:57,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:41:57,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:41:57,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009626356] [2024-06-03 19:41:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:41:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:41:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:41:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:41:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:41:57,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:41:57,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 601 transitions, 9454 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:41:57,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:41:57,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:41:57,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:41:59,290 INFO L124 PetriNetUnfolderBase]: 4714/7258 cut-off events. [2024-06-03 19:41:59,290 INFO L125 PetriNetUnfolderBase]: For 1311301/1311336 co-relation queries the response was YES. [2024-06-03 19:41:59,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76770 conditions, 7258 events. 4714/7258 cut-off events. For 1311301/1311336 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41071 event pairs, 1591 based on Foata normal form. 16/7227 useless extension candidates. Maximal degree in co-relation 76600. Up to 6726 conditions per place. [2024-06-03 19:41:59,404 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 537 selfloop transitions, 20 changer transitions 0/610 dead transitions. [2024-06-03 19:41:59,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 610 transitions, 10596 flow [2024-06-03 19:41:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:41:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:41:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-03 19:41:59,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746031746031746 [2024-06-03 19:41:59,405 INFO L175 Difference]: Start difference. First operand has 378 places, 601 transitions, 9454 flow. Second operand 7 states and 118 transitions. [2024-06-03 19:41:59,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 610 transitions, 10596 flow [2024-06-03 19:42:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 610 transitions, 10480 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-03 19:42:03,439 INFO L231 Difference]: Finished difference. Result has 380 places, 601 transitions, 9384 flow [2024-06-03 19:42:03,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9338, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9384, PETRI_PLACES=380, PETRI_TRANSITIONS=601} [2024-06-03 19:42:03,440 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 334 predicate places. [2024-06-03 19:42:03,440 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 601 transitions, 9384 flow [2024-06-03 19:42:03,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:03,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:03,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:42:03,440 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:03,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash -237862031, now seen corresponding path program 3 times [2024-06-03 19:42:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710483637] [2024-06-03 19:42:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:03,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710483637] [2024-06-03 19:42:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710483637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:04,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:42:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581701994] [2024-06-03 19:42:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:04,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:42:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:42:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:42:04,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:04,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 601 transitions, 9384 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:04,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:04,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:04,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:06,195 INFO L124 PetriNetUnfolderBase]: 4833/7403 cut-off events. [2024-06-03 19:42:06,195 INFO L125 PetriNetUnfolderBase]: For 1335298/1335298 co-relation queries the response was YES. [2024-06-03 19:42:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78520 conditions, 7403 events. 4833/7403 cut-off events. For 1335298/1335298 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41466 event pairs, 1611 based on Foata normal form. 1/7402 useless extension candidates. Maximal degree in co-relation 78349. Up to 7076 conditions per place. [2024-06-03 19:42:06,310 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 582 selfloop transitions, 15 changer transitions 0/610 dead transitions. [2024-06-03 19:42:06,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 610 transitions, 10606 flow [2024-06-03 19:42:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:42:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:42:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-03 19:42:06,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682539682539683 [2024-06-03 19:42:06,311 INFO L175 Difference]: Start difference. First operand has 380 places, 601 transitions, 9384 flow. Second operand 7 states and 116 transitions. [2024-06-03 19:42:06,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 610 transitions, 10606 flow [2024-06-03 19:42:10,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 610 transitions, 10494 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-03 19:42:10,426 INFO L231 Difference]: Finished difference. Result has 381 places, 601 transitions, 9308 flow [2024-06-03 19:42:10,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9308, PETRI_PLACES=381, PETRI_TRANSITIONS=601} [2024-06-03 19:42:10,427 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 335 predicate places. [2024-06-03 19:42:10,427 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 601 transitions, 9308 flow [2024-06-03 19:42:10,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:10,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:10,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:42:10,427 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:10,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash -77234399, now seen corresponding path program 1 times [2024-06-03 19:42:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422445039] [2024-06-03 19:42:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:11,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422445039] [2024-06-03 19:42:11,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422445039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:11,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:11,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989284782] [2024-06-03 19:42:11,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:11,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:11,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:11,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:11,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:42:11,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:11,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 601 transitions, 9308 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:11,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:11,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:11,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:13,924 INFO L124 PetriNetUnfolderBase]: 4897/7490 cut-off events. [2024-06-03 19:42:13,924 INFO L125 PetriNetUnfolderBase]: For 1574746/1574759 co-relation queries the response was YES. [2024-06-03 19:42:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85000 conditions, 7490 events. 4897/7490 cut-off events. For 1574746/1574759 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42131 event pairs, 952 based on Foata normal form. 12/7487 useless extension candidates. Maximal degree in co-relation 84828. Up to 6672 conditions per place. [2024-06-03 19:42:14,049 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 528 selfloop transitions, 94 changer transitions 0/646 dead transitions. [2024-06-03 19:42:14,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 646 transitions, 10832 flow [2024-06-03 19:42:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:42:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:42:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-03 19:42:14,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:42:14,050 INFO L175 Difference]: Start difference. First operand has 381 places, 601 transitions, 9308 flow. Second operand 11 states and 198 transitions. [2024-06-03 19:42:14,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 646 transitions, 10832 flow [2024-06-03 19:42:17,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 646 transitions, 10774 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:42:17,356 INFO L231 Difference]: Finished difference. Result has 385 places, 603 transitions, 9579 flow [2024-06-03 19:42:17,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9250, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9579, PETRI_PLACES=385, PETRI_TRANSITIONS=603} [2024-06-03 19:42:17,356 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 339 predicate places. [2024-06-03 19:42:17,356 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 603 transitions, 9579 flow [2024-06-03 19:42:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:17,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:17,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:17,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:42:17,357 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:17,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1603346685, now seen corresponding path program 2 times [2024-06-03 19:42:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504447749] [2024-06-03 19:42:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:18,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504447749] [2024-06-03 19:42:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504447749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:18,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703074779] [2024-06-03 19:42:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:18,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:42:18,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:18,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 603 transitions, 9579 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:18,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:18,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:18,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:20,646 INFO L124 PetriNetUnfolderBase]: 4922/7549 cut-off events. [2024-06-03 19:42:20,647 INFO L125 PetriNetUnfolderBase]: For 1608127/1608140 co-relation queries the response was YES. [2024-06-03 19:42:20,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86749 conditions, 7549 events. 4922/7549 cut-off events. For 1608127/1608140 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 42787 event pairs, 1212 based on Foata normal form. 12/7550 useless extension candidates. Maximal degree in co-relation 86576. Up to 6794 conditions per place. [2024-06-03 19:42:20,769 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 538 selfloop transitions, 88 changer transitions 0/650 dead transitions. [2024-06-03 19:42:20,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 650 transitions, 11250 flow [2024-06-03 19:42:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:42:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:42:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-03 19:42:20,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-03 19:42:20,770 INFO L175 Difference]: Start difference. First operand has 385 places, 603 transitions, 9579 flow. Second operand 11 states and 200 transitions. [2024-06-03 19:42:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 650 transitions, 11250 flow [2024-06-03 19:42:24,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 650 transitions, 10815 flow, removed 124 selfloop flow, removed 9 redundant places. [2024-06-03 19:42:24,850 INFO L231 Difference]: Finished difference. Result has 387 places, 607 transitions, 9607 flow [2024-06-03 19:42:24,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9607, PETRI_PLACES=387, PETRI_TRANSITIONS=607} [2024-06-03 19:42:24,851 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 341 predicate places. [2024-06-03 19:42:24,851 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 607 transitions, 9607 flow [2024-06-03 19:42:24,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:24,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:24,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:42:24,851 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:24,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:24,851 INFO L85 PathProgramCache]: Analyzing trace with hash 187803555, now seen corresponding path program 3 times [2024-06-03 19:42:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:24,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125456610] [2024-06-03 19:42:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:24,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:26,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125456610] [2024-06-03 19:42:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125456610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:26,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:26,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:26,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186370793] [2024-06-03 19:42:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:42:26,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:26,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 607 transitions, 9607 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:26,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:26,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:28,385 INFO L124 PetriNetUnfolderBase]: 4978/7667 cut-off events. [2024-06-03 19:42:28,385 INFO L125 PetriNetUnfolderBase]: For 1693812/1693821 co-relation queries the response was YES. [2024-06-03 19:42:28,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88804 conditions, 7667 events. 4978/7667 cut-off events. For 1693812/1693821 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 43893 event pairs, 1188 based on Foata normal form. 8/7666 useless extension candidates. Maximal degree in co-relation 88630. Up to 6811 conditions per place. [2024-06-03 19:42:28,510 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 521 selfloop transitions, 110 changer transitions 0/655 dead transitions. [2024-06-03 19:42:28,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 655 transitions, 11633 flow [2024-06-03 19:42:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:42:28,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:42:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-03 19:42:28,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-03 19:42:28,512 INFO L175 Difference]: Start difference. First operand has 387 places, 607 transitions, 9607 flow. Second operand 11 states and 205 transitions. [2024-06-03 19:42:28,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 655 transitions, 11633 flow [2024-06-03 19:42:32,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 655 transitions, 11366 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-03 19:42:32,597 INFO L231 Difference]: Finished difference. Result has 390 places, 611 transitions, 9844 flow [2024-06-03 19:42:32,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9340, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9844, PETRI_PLACES=390, PETRI_TRANSITIONS=611} [2024-06-03 19:42:32,597 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 344 predicate places. [2024-06-03 19:42:32,597 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 611 transitions, 9844 flow [2024-06-03 19:42:32,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:32,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:32,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:42:32,598 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:32,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1603435551, now seen corresponding path program 4 times [2024-06-03 19:42:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:32,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284733721] [2024-06-03 19:42:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:32,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:33,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284733721] [2024-06-03 19:42:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284733721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:33,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:33,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:33,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242317324] [2024-06-03 19:42:33,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:33,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:33,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:42:34,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:34,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 611 transitions, 9844 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:34,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:34,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:34,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:36,127 INFO L124 PetriNetUnfolderBase]: 4995/7700 cut-off events. [2024-06-03 19:42:36,128 INFO L125 PetriNetUnfolderBase]: For 1734516/1734525 co-relation queries the response was YES. [2024-06-03 19:42:36,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89634 conditions, 7700 events. 4995/7700 cut-off events. For 1734516/1734525 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 44244 event pairs, 1175 based on Foata normal form. 8/7699 useless extension candidates. Maximal degree in co-relation 89459. Up to 6737 conditions per place. [2024-06-03 19:42:36,260 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 519 selfloop transitions, 114 changer transitions 0/657 dead transitions. [2024-06-03 19:42:36,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 657 transitions, 11742 flow [2024-06-03 19:42:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:42:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:42:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-03 19:42:36,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161616161616162 [2024-06-03 19:42:36,262 INFO L175 Difference]: Start difference. First operand has 390 places, 611 transitions, 9844 flow. Second operand 11 states and 206 transitions. [2024-06-03 19:42:36,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 657 transitions, 11742 flow [2024-06-03 19:42:41,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 657 transitions, 11436 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-03 19:42:41,051 INFO L231 Difference]: Finished difference. Result has 393 places, 613 transitions, 9918 flow [2024-06-03 19:42:41,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9538, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9918, PETRI_PLACES=393, PETRI_TRANSITIONS=613} [2024-06-03 19:42:41,052 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 347 predicate places. [2024-06-03 19:42:41,052 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 613 transitions, 9918 flow [2024-06-03 19:42:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:41,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:41,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:42:41,052 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:41,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2001025431, now seen corresponding path program 5 times [2024-06-03 19:42:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288522169] [2024-06-03 19:42:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288522169] [2024-06-03 19:42:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288522169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:42,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652873412] [2024-06-03 19:42:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:42,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:42:42,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:42:42,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 613 transitions, 9918 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:42,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:42,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:42:42,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:44,724 INFO L124 PetriNetUnfolderBase]: 4983/7688 cut-off events. [2024-06-03 19:42:44,724 INFO L125 PetriNetUnfolderBase]: For 1749927/1749936 co-relation queries the response was YES. [2024-06-03 19:42:44,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89100 conditions, 7688 events. 4983/7688 cut-off events. For 1749927/1749936 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 44159 event pairs, 1208 based on Foata normal form. 12/7691 useless extension candidates. Maximal degree in co-relation 88923. Up to 6895 conditions per place. [2024-06-03 19:42:44,845 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 523 selfloop transitions, 108 changer transitions 0/655 dead transitions. [2024-06-03 19:42:44,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 655 transitions, 11342 flow [2024-06-03 19:42:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:42:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:42:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-03 19:42:44,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080808080808081 [2024-06-03 19:42:44,846 INFO L175 Difference]: Start difference. First operand has 393 places, 613 transitions, 9918 flow. Second operand 11 states and 202 transitions. [2024-06-03 19:42:44,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 655 transitions, 11342 flow [2024-06-03 19:42:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 655 transitions, 10876 flow, removed 121 selfloop flow, removed 9 redundant places. [2024-06-03 19:42:49,689 INFO L231 Difference]: Finished difference. Result has 395 places, 613 transitions, 9682 flow [2024-06-03 19:42:49,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9452, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9682, PETRI_PLACES=395, PETRI_TRANSITIONS=613} [2024-06-03 19:42:49,689 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 349 predicate places. [2024-06-03 19:42:49,689 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 613 transitions, 9682 flow [2024-06-03 19:42:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:42:49,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:49,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:49,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:42:49,690 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)] === [2024-06-03 19:42:49,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1354955067, now seen corresponding path program 1 times [2024-06-03 19:42:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797365325] [2024-06-03 19:42:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797365325] [2024-06-03 19:42:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797365325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:50,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:50,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:42:50,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690678510] [2024-06-03 19:42:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:50,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:42:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:42:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:42:50,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:42:50,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 613 transitions, 9682 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:50,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:42:50,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:42:50,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:42:53,111 INFO L124 PetriNetUnfolderBase]: 5187/7863 cut-off events. [2024-06-03 19:42:53,111 INFO L125 PetriNetUnfolderBase]: For 1747664/1747696 co-relation queries the response was YES. [2024-06-03 19:42:53,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88233 conditions, 7863 events. 5187/7863 cut-off events. For 1747664/1747696 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43929 event pairs, 1129 based on Foata normal form. 14/7835 useless extension candidates. Maximal degree in co-relation 88055. Up to 7195 conditions per place. [2024-06-03 19:42:53,233 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 494 selfloop transitions, 104 changer transitions 0/650 dead transitions. [2024-06-03 19:42:53,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 650 transitions, 11500 flow [2024-06-03 19:42:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:42:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:42:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-03 19:42:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:42:53,234 INFO L175 Difference]: Start difference. First operand has 395 places, 613 transitions, 9682 flow. Second operand 9 states and 162 transitions. [2024-06-03 19:42:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 650 transitions, 11500 flow [2024-06-03 19:42:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 650 transitions, 11270 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:42:58,567 INFO L231 Difference]: Finished difference. Result has 395 places, 622 transitions, 9847 flow [2024-06-03 19:42:58,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9452, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9847, PETRI_PLACES=395, PETRI_TRANSITIONS=622} [2024-06-03 19:42:58,568 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 349 predicate places. [2024-06-03 19:42:58,568 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 622 transitions, 9847 flow [2024-06-03 19:42:58,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:42:58,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:42:58,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:42:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:42:58,568 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:42:58,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:42:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1763000107, now seen corresponding path program 6 times [2024-06-03 19:42:58,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:42:58,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966853112] [2024-06-03 19:42:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:42:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:42:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:42:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:42:59,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:42:59,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966853112] [2024-06-03 19:42:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966853112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:42:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:42:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:42:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978477259] [2024-06-03 19:42:59,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:42:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:42:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:42:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:42:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:00,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:00,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 622 transitions, 9847 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:00,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:00,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:00,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:02,270 INFO L124 PetriNetUnfolderBase]: 5068/7809 cut-off events. [2024-06-03 19:43:02,270 INFO L125 PetriNetUnfolderBase]: For 1815148/1815161 co-relation queries the response was YES. [2024-06-03 19:43:02,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91365 conditions, 7809 events. 5068/7809 cut-off events. For 1815148/1815161 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 44911 event pairs, 917 based on Foata normal form. 12/7812 useless extension candidates. Maximal degree in co-relation 91185. Up to 7008 conditions per place. [2024-06-03 19:43:02,405 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 554 selfloop transitions, 88 changer transitions 0/669 dead transitions. [2024-06-03 19:43:02,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 669 transitions, 11440 flow [2024-06-03 19:43:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-03 19:43:02,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-03 19:43:02,406 INFO L175 Difference]: Start difference. First operand has 395 places, 622 transitions, 9847 flow. Second operand 11 states and 201 transitions. [2024-06-03 19:43:02,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 669 transitions, 11440 flow [2024-06-03 19:43:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 669 transitions, 11339 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-03 19:43:07,201 INFO L231 Difference]: Finished difference. Result has 402 places, 628 transitions, 10115 flow [2024-06-03 19:43:07,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9746, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10115, PETRI_PLACES=402, PETRI_TRANSITIONS=628} [2024-06-03 19:43:07,201 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 356 predicate places. [2024-06-03 19:43:07,202 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 628 transitions, 10115 flow [2024-06-03 19:43:07,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:07,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:07,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:07,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:43:07,202 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:43:07,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash -549274607, now seen corresponding path program 7 times [2024-06-03 19:43:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933058206] [2024-06-03 19:43:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:08,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:08,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933058206] [2024-06-03 19:43:08,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933058206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:08,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:08,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:43:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963383428] [2024-06-03 19:43:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:08,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:43:08,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:43:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:08,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:08,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 628 transitions, 10115 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:08,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:10,918 INFO L124 PetriNetUnfolderBase]: 5100/7873 cut-off events. [2024-06-03 19:43:10,918 INFO L125 PetriNetUnfolderBase]: For 1858372/1858385 co-relation queries the response was YES. [2024-06-03 19:43:11,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91968 conditions, 7873 events. 5100/7873 cut-off events. For 1858372/1858385 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 45449 event pairs, 948 based on Foata normal form. 16/7880 useless extension candidates. Maximal degree in co-relation 91786. Up to 7050 conditions per place. [2024-06-03 19:43:11,063 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 537 selfloop transitions, 108 changer transitions 0/672 dead transitions. [2024-06-03 19:43:11,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 672 transitions, 11715 flow [2024-06-03 19:43:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-03 19:43:11,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101010101010101 [2024-06-03 19:43:11,065 INFO L175 Difference]: Start difference. First operand has 402 places, 628 transitions, 10115 flow. Second operand 11 states and 203 transitions. [2024-06-03 19:43:11,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 672 transitions, 11715 flow [2024-06-03 19:43:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 672 transitions, 11416 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-03 19:43:17,029 INFO L231 Difference]: Finished difference. Result has 404 places, 632 transitions, 10214 flow [2024-06-03 19:43:17,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9816, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10214, PETRI_PLACES=404, PETRI_TRANSITIONS=632} [2024-06-03 19:43:17,029 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 358 predicate places. [2024-06-03 19:43:17,029 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 632 transitions, 10214 flow [2024-06-03 19:43:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:17,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:17,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:43:17,030 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:43:17,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash -549279257, now seen corresponding path program 8 times [2024-06-03 19:43:17,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:17,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874600028] [2024-06-03 19:43:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:17,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874600028] [2024-06-03 19:43:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874600028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:18,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:18,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:43:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701292160] [2024-06-03 19:43:18,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:43:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:43:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:18,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:18,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 632 transitions, 10214 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:18,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:18,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:18,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:20,706 INFO L124 PetriNetUnfolderBase]: 5128/7931 cut-off events. [2024-06-03 19:43:20,707 INFO L125 PetriNetUnfolderBase]: For 1882697/1882710 co-relation queries the response was YES. [2024-06-03 19:43:20,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92877 conditions, 7931 events. 5128/7931 cut-off events. For 1882697/1882710 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 46075 event pairs, 946 based on Foata normal form. 12/7934 useless extension candidates. Maximal degree in co-relation 92694. Up to 7022 conditions per place. [2024-06-03 19:43:20,843 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 537 selfloop transitions, 112 changer transitions 0/676 dead transitions. [2024-06-03 19:43:20,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 676 transitions, 11822 flow [2024-06-03 19:43:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-03 19:43:20,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-03 19:43:20,844 INFO L175 Difference]: Start difference. First operand has 404 places, 632 transitions, 10214 flow. Second operand 11 states and 204 transitions. [2024-06-03 19:43:20,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 676 transitions, 11822 flow [2024-06-03 19:43:26,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 676 transitions, 11478 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-03 19:43:27,005 INFO L231 Difference]: Finished difference. Result has 406 places, 636 transitions, 10274 flow [2024-06-03 19:43:27,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9870, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10274, PETRI_PLACES=406, PETRI_TRANSITIONS=636} [2024-06-03 19:43:27,006 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 360 predicate places. [2024-06-03 19:43:27,006 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 636 transitions, 10274 flow [2024-06-03 19:43:27,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:27,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:27,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:27,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:43:27,006 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:43:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -549394577, now seen corresponding path program 9 times [2024-06-03 19:43:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515275039] [2024-06-03 19:43:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:27,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515275039] [2024-06-03 19:43:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515275039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:43:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11971023] [2024-06-03 19:43:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:28,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:43:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:43:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:28,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:28,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 636 transitions, 10274 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:28,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:28,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:28,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:30,862 INFO L124 PetriNetUnfolderBase]: 5172/8009 cut-off events. [2024-06-03 19:43:30,863 INFO L125 PetriNetUnfolderBase]: For 1940705/1940718 co-relation queries the response was YES. [2024-06-03 19:43:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94246 conditions, 8009 events. 5172/8009 cut-off events. For 1940705/1940718 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 46722 event pairs, 953 based on Foata normal form. 12/8012 useless extension candidates. Maximal degree in co-relation 94062. Up to 6983 conditions per place. [2024-06-03 19:43:30,989 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 535 selfloop transitions, 118 changer transitions 0/680 dead transitions. [2024-06-03 19:43:30,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 680 transitions, 11888 flow [2024-06-03 19:43:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-03 19:43:30,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-03 19:43:30,990 INFO L175 Difference]: Start difference. First operand has 406 places, 636 transitions, 10274 flow. Second operand 11 states and 205 transitions. [2024-06-03 19:43:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 680 transitions, 11888 flow [2024-06-03 19:43:36,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 680 transitions, 11545 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-03 19:43:36,796 INFO L231 Difference]: Finished difference. Result has 409 places, 640 transitions, 10349 flow [2024-06-03 19:43:36,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9931, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10349, PETRI_PLACES=409, PETRI_TRANSITIONS=640} [2024-06-03 19:43:36,796 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 363 predicate places. [2024-06-03 19:43:36,796 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 640 transitions, 10349 flow [2024-06-03 19:43:36,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:36,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:36,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:36,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:43:36,796 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)] === [2024-06-03 19:43:36,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2027489708, now seen corresponding path program 1 times [2024-06-03 19:43:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:36,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972721637] [2024-06-03 19:43:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:37,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972721637] [2024-06-03 19:43:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972721637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:43:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220688442] [2024-06-03 19:43:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:37,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:43:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:43:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:43:37,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:37,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 640 transitions, 10349 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:37,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:37,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:37,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:39,866 INFO L124 PetriNetUnfolderBase]: 5260/8076 cut-off events. [2024-06-03 19:43:39,866 INFO L125 PetriNetUnfolderBase]: For 1954715/1954739 co-relation queries the response was YES. [2024-06-03 19:43:39,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93000 conditions, 8076 events. 5260/8076 cut-off events. For 1954715/1954739 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 46633 event pairs, 1436 based on Foata normal form. 5/8027 useless extension candidates. Maximal degree in co-relation 92815. Up to 7461 conditions per place. [2024-06-03 19:43:40,011 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 569 selfloop transitions, 35 changer transitions 0/668 dead transitions. [2024-06-03 19:43:40,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 668 transitions, 11981 flow [2024-06-03 19:43:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:43:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:43:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-03 19:43:40,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-03 19:43:40,012 INFO L175 Difference]: Start difference. First operand has 409 places, 640 transitions, 10349 flow. Second operand 8 states and 147 transitions. [2024-06-03 19:43:40,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 668 transitions, 11981 flow [2024-06-03 19:43:45,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 668 transitions, 11575 flow, removed 74 selfloop flow, removed 10 redundant places. [2024-06-03 19:43:45,750 INFO L231 Difference]: Finished difference. Result has 407 places, 646 transitions, 10173 flow [2024-06-03 19:43:45,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9943, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10173, PETRI_PLACES=407, PETRI_TRANSITIONS=646} [2024-06-03 19:43:45,750 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 361 predicate places. [2024-06-03 19:43:45,750 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 646 transitions, 10173 flow [2024-06-03 19:43:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:43:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:45,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:43:45,751 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:43:45,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1263836177, now seen corresponding path program 10 times [2024-06-03 19:43:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254629421] [2024-06-03 19:43:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254629421] [2024-06-03 19:43:47,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254629421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:47,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:47,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:43:47,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217623678] [2024-06-03 19:43:47,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:47,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:43:47,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:43:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:47,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:47,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 646 transitions, 10173 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:47,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:47,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:47,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:49,739 INFO L124 PetriNetUnfolderBase]: 5198/8056 cut-off events. [2024-06-03 19:43:49,739 INFO L125 PetriNetUnfolderBase]: For 2016539/2016552 co-relation queries the response was YES. [2024-06-03 19:43:49,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94879 conditions, 8056 events. 5198/8056 cut-off events. For 2016539/2016552 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 47096 event pairs, 958 based on Foata normal form. 16/8063 useless extension candidates. Maximal degree in co-relation 94693. Up to 6851 conditions per place. [2024-06-03 19:43:49,884 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 514 selfloop transitions, 148 changer transitions 0/689 dead transitions. [2024-06-03 19:43:49,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 689 transitions, 11819 flow [2024-06-03 19:43:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-03 19:43:49,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-03 19:43:49,885 INFO L175 Difference]: Start difference. First operand has 407 places, 646 transitions, 10173 flow. Second operand 11 states and 209 transitions. [2024-06-03 19:43:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 689 transitions, 11819 flow [2024-06-03 19:43:55,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 689 transitions, 11693 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-03 19:43:55,383 INFO L231 Difference]: Finished difference. Result has 414 places, 648 transitions, 10515 flow [2024-06-03 19:43:55,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10047, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10515, PETRI_PLACES=414, PETRI_TRANSITIONS=648} [2024-06-03 19:43:55,383 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 368 predicate places. [2024-06-03 19:43:55,383 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 648 transitions, 10515 flow [2024-06-03 19:43:55,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:55,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:43:55,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:43:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:43:55,384 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:43:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:43:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1263831527, now seen corresponding path program 11 times [2024-06-03 19:43:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:43:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323697514] [2024-06-03 19:43:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:43:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:43:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:43:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:43:56,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:43:56,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323697514] [2024-06-03 19:43:56,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323697514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:43:56,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:43:56,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:43:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420020429] [2024-06-03 19:43:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:43:56,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:43:56,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:43:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:43:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:43:57,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:43:57,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 648 transitions, 10515 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:43:57,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:43:57,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:43:57,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:43:59,394 INFO L124 PetriNetUnfolderBase]: 5231/8113 cut-off events. [2024-06-03 19:43:59,395 INFO L125 PetriNetUnfolderBase]: For 2075674/2075687 co-relation queries the response was YES. [2024-06-03 19:43:59,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97222 conditions, 8113 events. 5231/8113 cut-off events. For 2075674/2075687 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47565 event pairs, 955 based on Foata normal form. 12/8116 useless extension candidates. Maximal degree in co-relation 97034. Up to 6862 conditions per place. [2024-06-03 19:43:59,538 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 513 selfloop transitions, 151 changer transitions 0/691 dead transitions. [2024-06-03 19:43:59,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 691 transitions, 12165 flow [2024-06-03 19:43:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:43:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:43:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-03 19:43:59,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-03 19:43:59,539 INFO L175 Difference]: Start difference. First operand has 414 places, 648 transitions, 10515 flow. Second operand 11 states and 210 transitions. [2024-06-03 19:43:59,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 691 transitions, 12165 flow [2024-06-03 19:44:06,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 691 transitions, 11723 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-03 19:44:06,647 INFO L231 Difference]: Finished difference. Result has 417 places, 650 transitions, 10550 flow [2024-06-03 19:44:06,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10073, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10550, PETRI_PLACES=417, PETRI_TRANSITIONS=650} [2024-06-03 19:44:06,647 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 371 predicate places. [2024-06-03 19:44:06,647 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 650 transitions, 10550 flow [2024-06-03 19:44:06,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:06,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:06,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:06,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:44:06,648 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:44:06,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:06,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1440967697, now seen corresponding path program 12 times [2024-06-03 19:44:06,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:06,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865567130] [2024-06-03 19:44:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:44:07,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:07,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865567130] [2024-06-03 19:44:07,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865567130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:07,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:07,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:44:07,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063078599] [2024-06-03 19:44:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:07,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:44:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:44:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:44:08,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:44:08,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 650 transitions, 10550 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:08,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:08,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:44:08,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:10,494 INFO L124 PetriNetUnfolderBase]: 5335/8287 cut-off events. [2024-06-03 19:44:10,494 INFO L125 PetriNetUnfolderBase]: For 2249380/2249393 co-relation queries the response was YES. [2024-06-03 19:44:10,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99568 conditions, 8287 events. 5335/8287 cut-off events. For 2249380/2249393 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 48936 event pairs, 939 based on Foata normal form. 36/8314 useless extension candidates. Maximal degree in co-relation 99379. Up to 6952 conditions per place. [2024-06-03 19:44:10,634 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 511 selfloop transitions, 159 changer transitions 0/697 dead transitions. [2024-06-03 19:44:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 697 transitions, 12260 flow [2024-06-03 19:44:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:44:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:44:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-03 19:44:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262626262626263 [2024-06-03 19:44:10,635 INFO L175 Difference]: Start difference. First operand has 417 places, 650 transitions, 10550 flow. Second operand 11 states and 211 transitions. [2024-06-03 19:44:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 697 transitions, 12260 flow [2024-06-03 19:44:17,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 697 transitions, 11801 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-03 19:44:17,482 INFO L231 Difference]: Finished difference. Result has 419 places, 652 transitions, 10591 flow [2024-06-03 19:44:17,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10091, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10591, PETRI_PLACES=419, PETRI_TRANSITIONS=652} [2024-06-03 19:44:17,482 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 373 predicate places. [2024-06-03 19:44:17,482 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 652 transitions, 10591 flow [2024-06-03 19:44:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:17,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:17,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:44:17,482 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)] === [2024-06-03 19:44:17,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1434538607, now seen corresponding path program 13 times [2024-06-03 19:44:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:17,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64851006] [2024-06-03 19:44:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:17,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:44:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64851006] [2024-06-03 19:44:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64851006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:19,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:44:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588982918] [2024-06-03 19:44:19,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:19,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:44:19,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:44:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:44:19,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:44:19,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 652 transitions, 10591 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:19,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:19,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:44:19,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:21,576 INFO L124 PetriNetUnfolderBase]: 5348/8316 cut-off events. [2024-06-03 19:44:21,576 INFO L125 PetriNetUnfolderBase]: For 2191345/2191358 co-relation queries the response was YES. [2024-06-03 19:44:21,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99876 conditions, 8316 events. 5348/8316 cut-off events. For 2191345/2191358 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 49284 event pairs, 947 based on Foata normal form. 16/8323 useless extension candidates. Maximal degree in co-relation 99686. Up to 7091 conditions per place. [2024-06-03 19:44:21,722 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 515 selfloop transitions, 153 changer transitions 0/695 dead transitions. [2024-06-03 19:44:21,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 695 transitions, 12261 flow [2024-06-03 19:44:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:44:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:44:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-03 19:44:21,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202020202020202 [2024-06-03 19:44:21,723 INFO L175 Difference]: Start difference. First operand has 419 places, 652 transitions, 10591 flow. Second operand 11 states and 208 transitions. [2024-06-03 19:44:21,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 695 transitions, 12261 flow [2024-06-03 19:44:28,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 695 transitions, 11813 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-03 19:44:28,508 INFO L231 Difference]: Finished difference. Result has 421 places, 654 transitions, 10633 flow [2024-06-03 19:44:28,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10143, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10633, PETRI_PLACES=421, PETRI_TRANSITIONS=654} [2024-06-03 19:44:28,508 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 375 predicate places. [2024-06-03 19:44:28,508 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 654 transitions, 10633 flow [2024-06-03 19:44:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:28,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:28,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:44:28,509 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)] === [2024-06-03 19:44:28,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash -537238609, now seen corresponding path program 14 times [2024-06-03 19:44:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943861762] [2024-06-03 19:44:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:44:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943861762] [2024-06-03 19:44:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943861762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:29,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:44:29,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417021344] [2024-06-03 19:44:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:44:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:29,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:44:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:44:30,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:44:30,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 654 transitions, 10633 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:30,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:30,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:44:30,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:32,852 INFO L124 PetriNetUnfolderBase]: 5382/8389 cut-off events. [2024-06-03 19:44:32,852 INFO L125 PetriNetUnfolderBase]: For 2211927/2211945 co-relation queries the response was YES. [2024-06-03 19:44:32,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100748 conditions, 8389 events. 5382/8389 cut-off events. For 2211927/2211945 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 49986 event pairs, 985 based on Foata normal form. 12/8385 useless extension candidates. Maximal degree in co-relation 100557. Up to 6813 conditions per place. [2024-06-03 19:44:32,986 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 516 selfloop transitions, 162 changer transitions 0/705 dead transitions. [2024-06-03 19:44:32,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 705 transitions, 12917 flow [2024-06-03 19:44:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:44:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:44:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-03 19:44:32,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-03 19:44:32,987 INFO L175 Difference]: Start difference. First operand has 421 places, 654 transitions, 10633 flow. Second operand 11 states and 215 transitions. [2024-06-03 19:44:32,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 705 transitions, 12917 flow [2024-06-03 19:44:38,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 705 transitions, 12447 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-03 19:44:38,925 INFO L231 Difference]: Finished difference. Result has 423 places, 658 transitions, 10850 flow [2024-06-03 19:44:38,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10163, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10850, PETRI_PLACES=423, PETRI_TRANSITIONS=658} [2024-06-03 19:44:38,925 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 377 predicate places. [2024-06-03 19:44:38,925 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 658 transitions, 10850 flow [2024-06-03 19:44:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:38,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:38,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:38,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:44:38,926 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)] === [2024-06-03 19:44:38,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -366420859, now seen corresponding path program 15 times [2024-06-03 19:44:38,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:38,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268136582] [2024-06-03 19:44:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:38,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:44:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268136582] [2024-06-03 19:44:40,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268136582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:40,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:40,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:44:40,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690998104] [2024-06-03 19:44:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:40,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:44:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:44:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:44:40,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:44:40,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 658 transitions, 10850 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:40,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:40,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:44:40,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:43,339 INFO L124 PetriNetUnfolderBase]: 5374/8372 cut-off events. [2024-06-03 19:44:43,339 INFO L125 PetriNetUnfolderBase]: For 2221613/2221636 co-relation queries the response was YES. [2024-06-03 19:44:43,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100037 conditions, 8372 events. 5374/8372 cut-off events. For 2221613/2221636 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 49862 event pairs, 952 based on Foata normal form. 12/8361 useless extension candidates. Maximal degree in co-relation 99845. Up to 6948 conditions per place. [2024-06-03 19:44:43,554 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 518 selfloop transitions, 158 changer transitions 0/703 dead transitions. [2024-06-03 19:44:43,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 703 transitions, 12400 flow [2024-06-03 19:44:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:44:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:44:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-03 19:44:43,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42828282828282827 [2024-06-03 19:44:43,555 INFO L175 Difference]: Start difference. First operand has 423 places, 658 transitions, 10850 flow. Second operand 11 states and 212 transitions. [2024-06-03 19:44:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 703 transitions, 12400 flow [2024-06-03 19:44:50,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 703 transitions, 11929 flow, removed 146 selfloop flow, removed 7 redundant places. [2024-06-03 19:44:50,150 INFO L231 Difference]: Finished difference. Result has 427 places, 658 transitions, 10702 flow [2024-06-03 19:44:50,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10379, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10702, PETRI_PLACES=427, PETRI_TRANSITIONS=658} [2024-06-03 19:44:50,151 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 381 predicate places. [2024-06-03 19:44:50,151 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 658 transitions, 10702 flow [2024-06-03 19:44:50,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:44:50,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:44:50,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:44:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:44:50,151 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)] === [2024-06-03 19:44:50,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:44:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1441213961, now seen corresponding path program 1 times [2024-06-03 19:44:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:44:50,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740321750] [2024-06-03 19:44:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:44:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:44:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:44:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:44:51,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:44:51,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740321750] [2024-06-03 19:44:51,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740321750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:44:51,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:44:51,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:44:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706313361] [2024-06-03 19:44:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:44:51,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:44:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:44:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:44:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:44:51,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:44:51,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 658 transitions, 10702 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:44:51,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:44:51,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:44:51,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:44:54,634 INFO L124 PetriNetUnfolderBase]: 6033/9110 cut-off events. [2024-06-03 19:44:54,634 INFO L125 PetriNetUnfolderBase]: For 2392805/2392813 co-relation queries the response was YES. [2024-06-03 19:44:54,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104190 conditions, 9110 events. 6033/9110 cut-off events. For 2392805/2392813 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 51739 event pairs, 1137 based on Foata normal form. 32/9140 useless extension candidates. Maximal degree in co-relation 103996. Up to 7989 conditions per place. [2024-06-03 19:44:54,794 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 530 selfloop transitions, 165 changer transitions 0/710 dead transitions. [2024-06-03 19:44:54,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 710 transitions, 12466 flow [2024-06-03 19:44:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:44:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:44:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-03 19:44:54,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40185185185185185 [2024-06-03 19:44:54,795 INFO L175 Difference]: Start difference. First operand has 427 places, 658 transitions, 10702 flow. Second operand 12 states and 217 transitions. [2024-06-03 19:44:54,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 710 transitions, 12466 flow [2024-06-03 19:45:01,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 710 transitions, 12076 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-03 19:45:01,331 INFO L231 Difference]: Finished difference. Result has 429 places, 660 transitions, 10805 flow [2024-06-03 19:45:01,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10312, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10805, PETRI_PLACES=429, PETRI_TRANSITIONS=660} [2024-06-03 19:45:01,331 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 383 predicate places. [2024-06-03 19:45:01,332 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 660 transitions, 10805 flow [2024-06-03 19:45:01,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:01,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:01,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:01,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:45:01,332 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)] === [2024-06-03 19:45:01,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1491766976, now seen corresponding path program 2 times [2024-06-03 19:45:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:01,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266340797] [2024-06-03 19:45:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:01,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:45:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:45:02,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:45:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266340797] [2024-06-03 19:45:02,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266340797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:45:02,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:45:02,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:45:02,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088263749] [2024-06-03 19:45:02,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:45:02,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:45:02,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:45:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:45:02,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:45:02,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:45:02,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 660 transitions, 10805 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:02,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:45:02,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:45:02,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:04,805 INFO L124 PetriNetUnfolderBase]: 5591/8626 cut-off events. [2024-06-03 19:45:04,805 INFO L125 PetriNetUnfolderBase]: For 2297252/2297276 co-relation queries the response was YES. [2024-06-03 19:45:05,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101235 conditions, 8626 events. 5591/8626 cut-off events. For 2297252/2297276 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 51007 event pairs, 1524 based on Foata normal form. 5/8563 useless extension candidates. Maximal degree in co-relation 101040. Up to 8027 conditions per place. [2024-06-03 19:45:05,071 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 583 selfloop transitions, 31 changer transitions 0/678 dead transitions. [2024-06-03 19:45:05,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 678 transitions, 12093 flow [2024-06-03 19:45:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:45:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:45:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-03 19:45:05,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-03 19:45:05,072 INFO L175 Difference]: Start difference. First operand has 429 places, 660 transitions, 10805 flow. Second operand 8 states and 141 transitions. [2024-06-03 19:45:05,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 678 transitions, 12093 flow [2024-06-03 19:45:12,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 678 transitions, 11642 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-03 19:45:12,109 INFO L231 Difference]: Finished difference. Result has 428 places, 660 transitions, 10422 flow [2024-06-03 19:45:12,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10354, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10422, PETRI_PLACES=428, PETRI_TRANSITIONS=660} [2024-06-03 19:45:12,109 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 382 predicate places. [2024-06-03 19:45:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 660 transitions, 10422 flow [2024-06-03 19:45:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:45:12,110 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)] === [2024-06-03 19:45:12,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash 178499251, now seen corresponding path program 2 times [2024-06-03 19:45:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516077814] [2024-06-03 19:45:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:45:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:45:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:45:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516077814] [2024-06-03 19:45:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516077814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:45:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:45:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:45:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485657499] [2024-06-03 19:45:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:45:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:45:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:45:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:45:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:45:13,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:45:13,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 660 transitions, 10422 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:13,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:45:13,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:45:13,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:16,215 INFO L124 PetriNetUnfolderBase]: 5770/8822 cut-off events. [2024-06-03 19:45:16,216 INFO L125 PetriNetUnfolderBase]: For 2338752/2338780 co-relation queries the response was YES. [2024-06-03 19:45:16,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101332 conditions, 8822 events. 5770/8822 cut-off events. For 2338752/2338780 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 51392 event pairs, 1169 based on Foata normal form. 10/8769 useless extension candidates. Maximal degree in co-relation 101136. Up to 8134 conditions per place. [2024-06-03 19:45:16,360 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 542 selfloop transitions, 114 changer transitions 0/708 dead transitions. [2024-06-03 19:45:16,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 708 transitions, 12767 flow [2024-06-03 19:45:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:45:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:45:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-03 19:45:16,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40987654320987654 [2024-06-03 19:45:16,361 INFO L175 Difference]: Start difference. First operand has 428 places, 660 transitions, 10422 flow. Second operand 9 states and 166 transitions. [2024-06-03 19:45:16,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 708 transitions, 12767 flow [2024-06-03 19:45:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 708 transitions, 12707 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:45:24,241 INFO L231 Difference]: Finished difference. Result has 432 places, 676 transitions, 10848 flow [2024-06-03 19:45:24,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10362, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10848, PETRI_PLACES=432, PETRI_TRANSITIONS=676} [2024-06-03 19:45:24,241 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 386 predicate places. [2024-06-03 19:45:24,241 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 676 transitions, 10848 flow [2024-06-03 19:45:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:24,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:24,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:45:24,242 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)] === [2024-06-03 19:45:24,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1534662451, now seen corresponding path program 3 times [2024-06-03 19:45:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:24,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416649622] [2024-06-03 19:45:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:45:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:45:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:45:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416649622] [2024-06-03 19:45:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416649622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:45:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:45:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:45:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039615244] [2024-06-03 19:45:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:45:25,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:45:25,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:45:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:45:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:45:25,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:45:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 676 transitions, 10848 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:45:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:45:25,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:28,274 INFO L124 PetriNetUnfolderBase]: 5780/8835 cut-off events. [2024-06-03 19:45:28,275 INFO L125 PetriNetUnfolderBase]: For 2378862/2378890 co-relation queries the response was YES. [2024-06-03 19:45:28,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102052 conditions, 8835 events. 5780/8835 cut-off events. For 2378862/2378890 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 51435 event pairs, 1118 based on Foata normal form. 10/8782 useless extension candidates. Maximal degree in co-relation 101855. Up to 8144 conditions per place. [2024-06-03 19:45:28,427 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 533 selfloop transitions, 124 changer transitions 0/709 dead transitions. [2024-06-03 19:45:28,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 709 transitions, 13039 flow [2024-06-03 19:45:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:45:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:45:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-03 19:45:28,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39753086419753086 [2024-06-03 19:45:28,428 INFO L175 Difference]: Start difference. First operand has 432 places, 676 transitions, 10848 flow. Second operand 9 states and 161 transitions. [2024-06-03 19:45:28,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 709 transitions, 13039 flow [2024-06-03 19:45:34,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 709 transitions, 12843 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-03 19:45:34,820 INFO L231 Difference]: Finished difference. Result has 437 places, 681 transitions, 11005 flow [2024-06-03 19:45:34,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10663, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11005, PETRI_PLACES=437, PETRI_TRANSITIONS=681} [2024-06-03 19:45:34,820 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 391 predicate places. [2024-06-03 19:45:34,821 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 681 transitions, 11005 flow [2024-06-03 19:45:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:34,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:34,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:34,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:45:34,821 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)] === [2024-06-03 19:45:34,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash 189612286, now seen corresponding path program 1 times [2024-06-03 19:45:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064872912] [2024-06-03 19:45:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:45:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:45:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:45:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064872912] [2024-06-03 19:45:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064872912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:45:35,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:45:35,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:45:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632543603] [2024-06-03 19:45:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:45:35,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:45:35,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:45:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:45:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:45:36,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:45:36,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 681 transitions, 11005 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:36,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:45:36,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:45:36,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:39,000 INFO L124 PetriNetUnfolderBase]: 5785/8843 cut-off events. [2024-06-03 19:45:39,001 INFO L125 PetriNetUnfolderBase]: For 2414362/2414386 co-relation queries the response was YES. [2024-06-03 19:45:39,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102406 conditions, 8843 events. 5785/8843 cut-off events. For 2414362/2414386 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 51539 event pairs, 1605 based on Foata normal form. 5/8780 useless extension candidates. Maximal degree in co-relation 102208. Up to 8371 conditions per place. [2024-06-03 19:45:39,157 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 613 selfloop transitions, 45 changer transitions 0/710 dead transitions. [2024-06-03 19:45:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 710 transitions, 12737 flow [2024-06-03 19:45:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:45:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:45:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-03 19:45:39,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3728395061728395 [2024-06-03 19:45:39,157 INFO L175 Difference]: Start difference. First operand has 437 places, 681 transitions, 11005 flow. Second operand 9 states and 151 transitions. [2024-06-03 19:45:39,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 710 transitions, 12737 flow [2024-06-03 19:45:46,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 710 transitions, 12446 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-03 19:45:46,650 INFO L231 Difference]: Finished difference. Result has 441 places, 690 transitions, 10961 flow [2024-06-03 19:45:46,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10714, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10961, PETRI_PLACES=441, PETRI_TRANSITIONS=690} [2024-06-03 19:45:46,651 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 395 predicate places. [2024-06-03 19:45:46,651 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 690 transitions, 10961 flow [2024-06-03 19:45:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:46,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:46,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:46,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:45:46,651 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)] === [2024-06-03 19:45:46,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1491776431, now seen corresponding path program 4 times [2024-06-03 19:45:46,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:46,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118348713] [2024-06-03 19:45:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:46,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:45:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:45:47,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:45:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118348713] [2024-06-03 19:45:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118348713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:45:47,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:45:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:45:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234153386] [2024-06-03 19:45:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:45:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:45:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:45:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:45:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:45:47,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:45:47,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 690 transitions, 10961 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:47,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:45:47,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:45:47,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:45:50,815 INFO L124 PetriNetUnfolderBase]: 5779/8834 cut-off events. [2024-06-03 19:45:50,815 INFO L125 PetriNetUnfolderBase]: For 2445534/2445562 co-relation queries the response was YES. [2024-06-03 19:45:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102687 conditions, 8834 events. 5779/8834 cut-off events. For 2445534/2445562 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 51333 event pairs, 1116 based on Foata normal form. 10/8781 useless extension candidates. Maximal degree in co-relation 102487. Up to 8146 conditions per place. [2024-06-03 19:45:51,081 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 535 selfloop transitions, 129 changer transitions 0/716 dead transitions. [2024-06-03 19:45:51,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 716 transitions, 12843 flow [2024-06-03 19:45:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:45:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:45:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-03 19:45:51,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-03 19:45:51,082 INFO L175 Difference]: Start difference. First operand has 441 places, 690 transitions, 10961 flow. Second operand 9 states and 159 transitions. [2024-06-03 19:45:51,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 716 transitions, 12843 flow [2024-06-03 19:45:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 716 transitions, 12714 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-03 19:45:59,000 INFO L231 Difference]: Finished difference. Result has 446 places, 690 transitions, 11098 flow [2024-06-03 19:45:59,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10832, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11098, PETRI_PLACES=446, PETRI_TRANSITIONS=690} [2024-06-03 19:45:59,001 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 400 predicate places. [2024-06-03 19:45:59,001 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 690 transitions, 11098 flow [2024-06-03 19:45:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:45:59,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:45:59,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:45:59,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:45:59,001 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:45:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:45:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1784464175, now seen corresponding path program 16 times [2024-06-03 19:45:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:45:59,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886060428] [2024-06-03 19:45:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:45:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:45:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:46:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:46:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:46:00,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886060428] [2024-06-03 19:46:00,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886060428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:46:00,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:46:00,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:46:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541672565] [2024-06-03 19:46:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:46:00,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:46:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:46:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:46:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:46:00,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:46:00,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 690 transitions, 11098 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:00,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:46:00,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:46:00,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:46:03,163 INFO L124 PetriNetUnfolderBase]: 5564/8674 cut-off events. [2024-06-03 19:46:03,163 INFO L125 PetriNetUnfolderBase]: For 2551537/2551550 co-relation queries the response was YES. [2024-06-03 19:46:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104776 conditions, 8674 events. 5564/8674 cut-off events. For 2551537/2551550 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 51931 event pairs, 1103 based on Foata normal form. 12/8673 useless extension candidates. Maximal degree in co-relation 104573. Up to 7379 conditions per place. [2024-06-03 19:46:03,317 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 571 selfloop transitions, 124 changer transitions 0/730 dead transitions. [2024-06-03 19:46:03,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 730 transitions, 12808 flow [2024-06-03 19:46:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:46:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:46:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-03 19:46:03,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022222222222222 [2024-06-03 19:46:03,318 INFO L175 Difference]: Start difference. First operand has 446 places, 690 transitions, 11098 flow. Second operand 10 states and 181 transitions. [2024-06-03 19:46:03,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 730 transitions, 12808 flow [2024-06-03 19:46:09,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 730 transitions, 12562 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 19:46:09,952 INFO L231 Difference]: Finished difference. Result has 449 places, 692 transitions, 11311 flow [2024-06-03 19:46:09,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10852, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11311, PETRI_PLACES=449, PETRI_TRANSITIONS=692} [2024-06-03 19:46:09,953 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 403 predicate places. [2024-06-03 19:46:09,953 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 692 transitions, 11311 flow [2024-06-03 19:46:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:09,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:46:09,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:46:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 19:46:09,954 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:46:09,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:46:09,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1842556625, now seen corresponding path program 17 times [2024-06-03 19:46:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:46:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024494984] [2024-06-03 19:46:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:46:09,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:46:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:46:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:46:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:46:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024494984] [2024-06-03 19:46:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024494984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:46:11,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:46:11,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:46:11,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626883743] [2024-06-03 19:46:11,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:46:11,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:46:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:46:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:46:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:46:11,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:46:11,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 692 transitions, 11311 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:11,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:46:11,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:46:11,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:46:14,537 INFO L124 PetriNetUnfolderBase]: 5601/8765 cut-off events. [2024-06-03 19:46:14,537 INFO L125 PetriNetUnfolderBase]: For 2622608/2622617 co-relation queries the response was YES. [2024-06-03 19:46:14,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107974 conditions, 8765 events. 5601/8765 cut-off events. For 2622608/2622617 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 53077 event pairs, 1279 based on Foata normal form. 8/8764 useless extension candidates. Maximal degree in co-relation 107770. Up to 7141 conditions per place. [2024-06-03 19:46:14,685 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 531 selfloop transitions, 170 changer transitions 0/736 dead transitions. [2024-06-03 19:46:14,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 736 transitions, 13635 flow [2024-06-03 19:46:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:46:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:46:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-03 19:46:14,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2024-06-03 19:46:14,686 INFO L175 Difference]: Start difference. First operand has 449 places, 692 transitions, 11311 flow. Second operand 10 states and 188 transitions. [2024-06-03 19:46:14,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 736 transitions, 13635 flow [2024-06-03 19:46:22,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 736 transitions, 13182 flow, removed 113 selfloop flow, removed 8 redundant places. [2024-06-03 19:46:22,667 INFO L231 Difference]: Finished difference. Result has 451 places, 696 transitions, 11602 flow [2024-06-03 19:46:22,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10894, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11602, PETRI_PLACES=451, PETRI_TRANSITIONS=696} [2024-06-03 19:46:22,667 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 405 predicate places. [2024-06-03 19:46:22,667 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 696 transitions, 11602 flow [2024-06-03 19:46:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:22,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:46:22,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:46:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 19:46:22,668 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:46:22,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:46:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1842671945, now seen corresponding path program 18 times [2024-06-03 19:46:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:46:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852119119] [2024-06-03 19:46:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:46:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:46:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:46:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:46:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:46:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852119119] [2024-06-03 19:46:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852119119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:46:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:46:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:46:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525104022] [2024-06-03 19:46:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:46:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:46:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:46:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:46:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:46:24,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:46:24,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 696 transitions, 11602 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:24,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:46:24,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:46:24,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:46:27,207 INFO L124 PetriNetUnfolderBase]: 5634/8826 cut-off events. [2024-06-03 19:46:27,207 INFO L125 PetriNetUnfolderBase]: For 2557935/2557944 co-relation queries the response was YES. [2024-06-03 19:46:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107897 conditions, 8826 events. 5634/8826 cut-off events. For 2557935/2557944 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 53610 event pairs, 1293 based on Foata normal form. 8/8825 useless extension candidates. Maximal degree in co-relation 107692. Up to 7407 conditions per place. [2024-06-03 19:46:27,372 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 543 selfloop transitions, 160 changer transitions 0/738 dead transitions. [2024-06-03 19:46:27,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 738 transitions, 13732 flow [2024-06-03 19:46:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:46:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:46:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-03 19:46:27,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-03 19:46:27,373 INFO L175 Difference]: Start difference. First operand has 451 places, 696 transitions, 11602 flow. Second operand 10 states and 187 transitions. [2024-06-03 19:46:27,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 738 transitions, 13732 flow [2024-06-03 19:46:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 738 transitions, 13356 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-03 19:46:35,567 INFO L231 Difference]: Finished difference. Result has 455 places, 698 transitions, 11740 flow [2024-06-03 19:46:35,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=11250, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11740, PETRI_PLACES=455, PETRI_TRANSITIONS=698} [2024-06-03 19:46:35,568 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 409 predicate places. [2024-06-03 19:46:35,568 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 698 transitions, 11740 flow [2024-06-03 19:46:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:35,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:46:35,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:46:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 19:46:35,569 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:46:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:46:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1233766345, now seen corresponding path program 19 times [2024-06-03 19:46:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:46:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855935101] [2024-06-03 19:46:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:46:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:46:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:46:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:46:36,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:46:36,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855935101] [2024-06-03 19:46:36,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855935101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:46:36,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:46:36,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:46:36,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578404427] [2024-06-03 19:46:36,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:46:36,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:46:36,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:46:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:46:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:46:37,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-03 19:46:37,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 698 transitions, 11740 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:37,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:46:37,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-03 19:46:37,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:46:40,106 INFO L124 PetriNetUnfolderBase]: 5622/8810 cut-off events. [2024-06-03 19:46:40,107 INFO L125 PetriNetUnfolderBase]: For 2557765/2557774 co-relation queries the response was YES. [2024-06-03 19:46:40,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106843 conditions, 8810 events. 5622/8810 cut-off events. For 2557765/2557774 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 53522 event pairs, 1325 based on Foata normal form. 12/8813 useless extension candidates. Maximal degree in co-relation 106636. Up to 7563 conditions per place. [2024-06-03 19:46:40,254 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 549 selfloop transitions, 152 changer transitions 0/736 dead transitions. [2024-06-03 19:46:40,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 736 transitions, 13292 flow [2024-06-03 19:46:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:46:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:46:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-03 19:46:40,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088888888888889 [2024-06-03 19:46:40,255 INFO L175 Difference]: Start difference. First operand has 455 places, 698 transitions, 11740 flow. Second operand 10 states and 184 transitions. [2024-06-03 19:46:40,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 736 transitions, 13292 flow [2024-06-03 19:46:47,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 736 transitions, 12684 flow, removed 137 selfloop flow, removed 9 redundant places. [2024-06-03 19:46:47,948 INFO L231 Difference]: Finished difference. Result has 456 places, 698 transitions, 11464 flow [2024-06-03 19:46:47,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=11132, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11464, PETRI_PLACES=456, PETRI_TRANSITIONS=698} [2024-06-03 19:46:47,948 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 410 predicate places. [2024-06-03 19:46:47,949 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 698 transitions, 11464 flow [2024-06-03 19:46:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-03 19:46:47,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:46:47,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:46:47,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 19:46:47,949 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:46:47,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:46:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash 239803983, now seen corresponding path program 1 times [2024-06-03 19:46:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:46:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293114735] [2024-06-03 19:46:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:46:47,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:46:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:46:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:46:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:46:49,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293114735] [2024-06-03 19:46:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293114735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:46:49,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:46:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:46:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427149373] [2024-06-03 19:46:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:46:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:46:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:46:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:46:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:46:49,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-03 19:46:49,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 698 transitions, 11464 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:46:49,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:46:49,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-03 19:46:49,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:46:52,555 INFO L124 PetriNetUnfolderBase]: 6208/9381 cut-off events. [2024-06-03 19:46:52,556 INFO L125 PetriNetUnfolderBase]: For 2481324/2481332 co-relation queries the response was YES. [2024-06-03 19:46:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106807 conditions, 9381 events. 6208/9381 cut-off events. For 2481324/2481332 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 53699 event pairs, 1123 based on Foata normal form. 12/9391 useless extension candidates. Maximal degree in co-relation 106600. Up to 7956 conditions per place. [2024-06-03 19:46:52,726 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 494 selfloop transitions, 218 changer transitions 0/735 dead transitions. [2024-06-03 19:46:52,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 735 transitions, 13042 flow [2024-06-03 19:46:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:46:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:46:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-03 19:46:52,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:46:52,727 INFO L175 Difference]: Start difference. First operand has 456 places, 698 transitions, 11464 flow. Second operand 10 states and 180 transitions. [2024-06-03 19:46:52,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 735 transitions, 13042 flow