./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 cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/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-cde23df-m [2024-06-14 12:18:20,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:18:20,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:18:20,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:18:20,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:18:20,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:18:20,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:18:20,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:18:20,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:18:20,300 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:18:20,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:18:20,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:18:20,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:18:20,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:18:20,303 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:18:20,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:18:20,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:18:20,303 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:18:20,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:18:20,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:18:20,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:18:20,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:18:20,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:18:20,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:18:20,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:18:20,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:18:20,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:18:20,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:18:20,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:18:20,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:18:20,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:18:20,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:18:20,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:18:20,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:18:20,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:18:20,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:18:20,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:18:20,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:18:20,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:18:20,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:18:20,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:18:20,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:18:20,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:18:20,312 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:18:20,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:18:20,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:18:20,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:18:20,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:18:20,575 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:18:20,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-14 12:18:21,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:18:22,156 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:18:22,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-14 12:18:22,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b8ab8c1/1239cc38d11f42d2bb3508d52aba0b67/FLAG3cad8b7bc [2024-06-14 12:18:22,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b8ab8c1/1239cc38d11f42d2bb3508d52aba0b67 [2024-06-14 12:18:22,191 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:18:22,192 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:18:22,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix033_tso.oepc.yml/witness.yml [2024-06-14 12:18:22,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:18:22,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:18:22,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:18:22,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:18:22,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:18:22,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:18:22" (1/2) ... [2024-06-14 12:18:22,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adcad31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:22, skipping insertion in model container [2024-06-14 12:18:22,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:18:22" (1/2) ... [2024-06-14 12:18:22,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4522664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:18:22, skipping insertion in model container [2024-06-14 12:18:22,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:22" (2/2) ... [2024-06-14 12:18:22,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adcad31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:22, skipping insertion in model container [2024-06-14 12:18:22,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:22" (2/2) ... [2024-06-14 12:18:22,384 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:18:22,489 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:18:22,490 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$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-14 12:18:22,490 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((((! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$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))) [2024-06-14 12:18:22,491 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))) [2024-06-14 12:18:22,491 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:18:22,491 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-14 12:18:22,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:18:22,925 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:18:22,943 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:18:23,113 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:18:23,161 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:18:23,162 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23 WrapperNode [2024-06-14 12:18:23,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:18:23,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:18:23,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:18:23,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:18:23,171 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 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,200 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 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,248 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-14 12:18:23,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:18:23,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:18:23,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:18:23,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:18:23,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,303 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:18:23,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:18:23,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:18:23,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:18:23,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:18:23,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (1/1) ... [2024-06-14 12:18:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:18:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:18:23,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:18:23,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:18:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:18:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:18:23,446 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:18:23,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:18:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:18:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:18:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 12:18:23,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 12:18:23,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:18:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:18:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:18:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:18:23,450 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:18:23,619 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:18:23,622 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:18:24,073 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:18:24,075 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:18:24,252 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:18:24,253 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:18:24,253 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:18:24 BoogieIcfgContainer [2024-06-14 12:18:24,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:18:24,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:18:24,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:18:24,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:18:24,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:18:22" (1/4) ... [2024-06-14 12:18:24,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46efa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:18:24, skipping insertion in model container [2024-06-14 12:18:24,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:18:22" (2/4) ... [2024-06-14 12:18:24,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46efa4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:18:24, skipping insertion in model container [2024-06-14 12:18:24,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:18:23" (3/4) ... [2024-06-14 12:18:24,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46efa4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:18:24, skipping insertion in model container [2024-06-14 12:18:24,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:18:24" (4/4) ... [2024-06-14 12:18:24,263 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_tso.oepc.i [2024-06-14 12:18:24,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:18:24,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 12:18:24,281 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:18:24,329 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:18:24,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 45 transitions, 102 flow [2024-06-14 12:18:24,391 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2024-06-14 12:18:24,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:18:24,394 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. [2024-06-14 12:18:24,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 45 transitions, 102 flow [2024-06-14 12:18:24,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 81 flow [2024-06-14 12:18:24,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:18:24,413 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;@7f12ba67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:18:24,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 12:18:24,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:18:24,419 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:18:24,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:18:24,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:24,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:18:24,420 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)] === [2024-06-14 12:18:24,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash -925057465, now seen corresponding path program 1 times [2024-06-14 12:18:24,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:24,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860883220] [2024-06-14 12:18:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860883220] [2024-06-14 12:18:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860883220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:26,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:26,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:18:26,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161176297] [2024-06-14 12:18:26,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:26,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:18:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:26,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:18:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:18:26,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 12:18:26,197 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) [2024-06-14 12:18:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 12:18:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:26,788 INFO L124 PetriNetUnfolderBase]: 1659/2634 cut-off events. [2024-06-14 12:18:26,788 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-14 12:18:26,795 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. [2024-06-14 12:18:26,809 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 35 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-14 12:18:26,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 185 flow [2024-06-14 12:18:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:18:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:18:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-14 12:18:26,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-14 12:18:26,822 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 81 flow. Second operand 3 states and 78 transitions. [2024-06-14 12:18:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 185 flow [2024-06-14 12:18:26,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:26,827 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-06-14 12:18:26,828 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} [2024-06-14 12:18:26,832 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-06-14 12:18:26,832 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-06-14 12:18:26,832 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) [2024-06-14 12:18:26,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:26,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:26,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:18:26,833 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)] === [2024-06-14 12:18:26,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 78054054, now seen corresponding path program 1 times [2024-06-14 12:18:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289542383] [2024-06-14 12:18:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:26,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289542383] [2024-06-14 12:18:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289542383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:18:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549693072] [2024-06-14 12:18:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:27,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:18:27,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:18:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:18:27,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 12:18:27,998 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) [2024-06-14 12:18:27,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:27,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 12:18:27,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:28,513 INFO L124 PetriNetUnfolderBase]: 1905/2937 cut-off events. [2024-06-14 12:18:28,514 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-06-14 12:18:28,519 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. [2024-06-14 12:18:28,532 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-14 12:18:28,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 254 flow [2024-06-14 12:18:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:18:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:18:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-14 12:18:28,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-06-14 12:18:28,535 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 97 transitions. [2024-06-14 12:18:28,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 254 flow [2024-06-14 12:18:28,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:18:28,537 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 144 flow [2024-06-14 12:18:28,537 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} [2024-06-14 12:18:28,538 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2024-06-14 12:18:28,538 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 144 flow [2024-06-14 12:18:28,539 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) [2024-06-14 12:18:28,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:28,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:28,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:18:28,539 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)] === [2024-06-14 12:18:28,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:28,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1875290072, now seen corresponding path program 1 times [2024-06-14 12:18:28,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:28,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986823218] [2024-06-14 12:18:28,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:28,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:29,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986823218] [2024-06-14 12:18:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986823218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:29,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:18:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487848438] [2024-06-14 12:18:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:29,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:18:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:18:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:18:29,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 12:18:29,746 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) [2024-06-14 12:18:29,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:29,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 12:18:29,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:30,239 INFO L124 PetriNetUnfolderBase]: 1893/2923 cut-off events. [2024-06-14 12:18:30,239 INFO L125 PetriNetUnfolderBase]: For 1534/1534 co-relation queries the response was YES. [2024-06-14 12:18:30,244 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. [2024-06-14 12:18:30,258 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 51 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-14 12:18:30,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 336 flow [2024-06-14 12:18:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:18:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:18:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-14 12:18:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2024-06-14 12:18:30,261 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 144 flow. Second operand 5 states and 119 transitions. [2024-06-14 12:18:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 336 flow [2024-06-14 12:18:30,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 322 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 12:18:30,264 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 180 flow [2024-06-14 12:18:30,265 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} [2024-06-14 12:18:30,265 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2024-06-14 12:18:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 180 flow [2024-06-14 12:18:30,266 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) [2024-06-14 12:18:30,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:30,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:18:30,267 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)] === [2024-06-14 12:18:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1732555751, now seen corresponding path program 1 times [2024-06-14 12:18:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939629821] [2024-06-14 12:18:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939629821] [2024-06-14 12:18:31,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939629821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:31,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:31,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348079358] [2024-06-14 12:18:31,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:31,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 12:18:31,851 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) [2024-06-14 12:18:31,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:31,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 12:18:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:32,463 INFO L124 PetriNetUnfolderBase]: 1884/2904 cut-off events. [2024-06-14 12:18:32,463 INFO L125 PetriNetUnfolderBase]: For 2854/2854 co-relation queries the response was YES. [2024-06-14 12:18:32,469 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. [2024-06-14 12:18:32,482 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-14 12:18:32,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 390 flow [2024-06-14 12:18:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-14 12:18:32,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-14 12:18:32,487 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 180 flow. Second operand 6 states and 136 transitions. [2024-06-14 12:18:32,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 390 flow [2024-06-14 12:18:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 366 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:32,493 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 199 flow [2024-06-14 12:18:32,493 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} [2024-06-14 12:18:32,495 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2024-06-14 12:18:32,495 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 199 flow [2024-06-14 12:18:32,495 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) [2024-06-14 12:18:32,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:32,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:32,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:18:32,496 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)] === [2024-06-14 12:18:32,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash 725652736, now seen corresponding path program 1 times [2024-06-14 12:18:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:32,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230600849] [2024-06-14 12:18:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:32,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230600849] [2024-06-14 12:18:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230600849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:33,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:33,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:18:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030512571] [2024-06-14 12:18:33,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:33,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:18:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:33,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:18:33,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:18:33,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 12:18:33,770 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) [2024-06-14 12:18:33,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:33,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 12:18:33,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:34,256 INFO L124 PetriNetUnfolderBase]: 1627/2585 cut-off events. [2024-06-14 12:18:34,257 INFO L125 PetriNetUnfolderBase]: For 3895/3895 co-relation queries the response was YES. [2024-06-14 12:18:34,264 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. [2024-06-14 12:18:34,279 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 45 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-06-14 12:18:34,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 349 flow [2024-06-14 12:18:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:18:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:18:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-14 12:18:34,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-14 12:18:34,281 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 199 flow. Second operand 5 states and 102 transitions. [2024-06-14 12:18:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 349 flow [2024-06-14 12:18:34,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 316 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:34,286 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 212 flow [2024-06-14 12:18:34,286 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} [2024-06-14 12:18:34,287 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-06-14 12:18:34,287 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 212 flow [2024-06-14 12:18:34,287 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) [2024-06-14 12:18:34,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:34,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:18:34,288 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)] === [2024-06-14 12:18:34,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1020399532, now seen corresponding path program 1 times [2024-06-14 12:18:34,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:34,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266840208] [2024-06-14 12:18:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:34,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266840208] [2024-06-14 12:18:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266840208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645427820] [2024-06-14 12:18:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:35,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:35,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:35,704 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) [2024-06-14 12:18:35,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:35,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:35,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:36,273 INFO L124 PetriNetUnfolderBase]: 1918/3085 cut-off events. [2024-06-14 12:18:36,274 INFO L125 PetriNetUnfolderBase]: For 6144/6144 co-relation queries the response was YES. [2024-06-14 12:18:36,281 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. [2024-06-14 12:18:36,303 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-14 12:18:36,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 392 flow [2024-06-14 12:18:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-14 12:18:36,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-14 12:18:36,305 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 212 flow. Second operand 6 states and 115 transitions. [2024-06-14 12:18:36,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 392 flow [2024-06-14 12:18:36,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 370 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:36,312 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 246 flow [2024-06-14 12:18:36,313 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} [2024-06-14 12:18:36,316 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-06-14 12:18:36,316 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 246 flow [2024-06-14 12:18:36,316 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) [2024-06-14 12:18:36,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:36,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:36,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:18:36,317 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)] === [2024-06-14 12:18:36,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1171997997, now seen corresponding path program 1 times [2024-06-14 12:18:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682257097] [2024-06-14 12:18:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682257097] [2024-06-14 12:18:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682257097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:37,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824688727] [2024-06-14 12:18:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:37,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:37,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:37,637 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) [2024-06-14 12:18:37,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:37,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:37,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:38,312 INFO L124 PetriNetUnfolderBase]: 2094/3286 cut-off events. [2024-06-14 12:18:38,313 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-06-14 12:18:38,320 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. [2024-06-14 12:18:38,330 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-14 12:18:38,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 446 flow [2024-06-14 12:18:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-14 12:18:38,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-14 12:18:38,332 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 246 flow. Second operand 6 states and 118 transitions. [2024-06-14 12:18:38,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 446 flow [2024-06-14 12:18:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 414 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:38,337 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 272 flow [2024-06-14 12:18:38,337 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} [2024-06-14 12:18:38,339 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-06-14 12:18:38,339 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 272 flow [2024-06-14 12:18:38,339 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) [2024-06-14 12:18:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:38,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:18:38,340 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)] === [2024-06-14 12:18:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1927780901, now seen corresponding path program 2 times [2024-06-14 12:18:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922821482] [2024-06-14 12:18:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:39,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:39,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922821482] [2024-06-14 12:18:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922821482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:39,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533203321] [2024-06-14 12:18:39,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:39,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:39,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:39,664 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) [2024-06-14 12:18:39,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:39,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:40,208 INFO L124 PetriNetUnfolderBase]: 2089/3281 cut-off events. [2024-06-14 12:18:40,209 INFO L125 PetriNetUnfolderBase]: For 12642/12654 co-relation queries the response was YES. [2024-06-14 12:18:40,219 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. [2024-06-14 12:18:40,233 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-14 12:18:40,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 470 flow [2024-06-14 12:18:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:18:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:18:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-14 12:18:40,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:18:40,238 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 272 flow. Second operand 6 states and 117 transitions. [2024-06-14 12:18:40,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 470 flow [2024-06-14 12:18:40,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 436 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:40,247 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 312 flow [2024-06-14 12:18:40,247 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} [2024-06-14 12:18:40,249 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-06-14 12:18:40,249 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 312 flow [2024-06-14 12:18:40,250 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) [2024-06-14 12:18:40,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:40,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:40,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:18:40,250 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)] === [2024-06-14 12:18:40,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1567615647, now seen corresponding path program 1 times [2024-06-14 12:18:40,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:40,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634242870] [2024-06-14 12:18:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:40,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634242870] [2024-06-14 12:18:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634242870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:41,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888040646] [2024-06-14 12:18:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:41,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:41,747 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) [2024-06-14 12:18:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:41,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:42,244 INFO L124 PetriNetUnfolderBase]: 1919/3114 cut-off events. [2024-06-14 12:18:42,244 INFO L125 PetriNetUnfolderBase]: For 13547/13547 co-relation queries the response was YES. [2024-06-14 12:18:42,253 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. [2024-06-14 12:18:42,268 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 60 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-14 12:18:42,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 536 flow [2024-06-14 12:18:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-14 12:18:42,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-14 12:18:42,270 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 312 flow. Second operand 7 states and 132 transitions. [2024-06-14 12:18:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 536 flow [2024-06-14 12:18:42,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 486 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:18:42,277 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 332 flow [2024-06-14 12:18:42,277 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} [2024-06-14 12:18:42,278 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-06-14 12:18:42,278 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 332 flow [2024-06-14 12:18:42,278 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) [2024-06-14 12:18:42,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:42,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:42,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:18:42,279 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)] === [2024-06-14 12:18:42,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1173948305, now seen corresponding path program 1 times [2024-06-14 12:18:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:42,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465437611] [2024-06-14 12:18:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:43,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:43,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465437611] [2024-06-14 12:18:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465437611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:43,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:43,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:43,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54061142] [2024-06-14 12:18:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:43,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:43,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:43,531 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) [2024-06-14 12:18:43,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:43,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:44,196 INFO L124 PetriNetUnfolderBase]: 2106/3320 cut-off events. [2024-06-14 12:18:44,196 INFO L125 PetriNetUnfolderBase]: For 19477/19477 co-relation queries the response was YES. [2024-06-14 12:18:44,203 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. [2024-06-14 12:18:44,216 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 69 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-06-14 12:18:44,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 612 flow [2024-06-14 12:18:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 12:18:44,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:18:44,218 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 332 flow. Second operand 7 states and 140 transitions. [2024-06-14 12:18:44,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 612 flow [2024-06-14 12:18:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 566 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:44,225 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 382 flow [2024-06-14 12:18:44,225 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} [2024-06-14 12:18:44,226 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-06-14 12:18:44,226 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 382 flow [2024-06-14 12:18:44,226 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) [2024-06-14 12:18:44,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:44,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:18:44,227 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)] === [2024-06-14 12:18:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash -374762293, now seen corresponding path program 2 times [2024-06-14 12:18:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544314275] [2024-06-14 12:18:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544314275] [2024-06-14 12:18:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544314275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563171543] [2024-06-14 12:18:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:45,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:45,478 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) [2024-06-14 12:18:45,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:45,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:45,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:46,089 INFO L124 PetriNetUnfolderBase]: 2156/3378 cut-off events. [2024-06-14 12:18:46,090 INFO L125 PetriNetUnfolderBase]: For 24645/24645 co-relation queries the response was YES. [2024-06-14 12:18:46,098 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. [2024-06-14 12:18:46,112 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 68 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-14 12:18:46,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 750 flow [2024-06-14 12:18:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-14 12:18:46,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-14 12:18:46,113 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 382 flow. Second operand 7 states and 142 transitions. [2024-06-14 12:18:46,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 750 flow [2024-06-14 12:18:46,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 706 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:46,121 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 476 flow [2024-06-14 12:18:46,121 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} [2024-06-14 12:18:46,121 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-06-14 12:18:46,121 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 476 flow [2024-06-14 12:18:46,122 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) [2024-06-14 12:18:46,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:46,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:46,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:18:46,122 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)] === [2024-06-14 12:18:46,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1174068461, now seen corresponding path program 1 times [2024-06-14 12:18:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256625109] [2024-06-14 12:18:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:47,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256625109] [2024-06-14 12:18:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256625109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:47,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088367888] [2024-06-14 12:18:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:47,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:18:47,417 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) [2024-06-14 12:18:47,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:47,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:18:47,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:48,012 INFO L124 PetriNetUnfolderBase]: 2287/3519 cut-off events. [2024-06-14 12:18:48,012 INFO L125 PetriNetUnfolderBase]: For 29387/29387 co-relation queries the response was YES. [2024-06-14 12:18:48,017 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. [2024-06-14 12:18:48,031 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 79 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-14 12:18:48,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 754 flow [2024-06-14 12:18:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-14 12:18:48,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-14 12:18:48,033 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 476 flow. Second operand 7 states and 129 transitions. [2024-06-14 12:18:48,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 754 flow [2024-06-14 12:18:48,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 708 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:48,048 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 508 flow [2024-06-14 12:18:48,048 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} [2024-06-14 12:18:48,049 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-06-14 12:18:48,049 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 508 flow [2024-06-14 12:18:48,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:48,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:48,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:18:48,050 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)] === [2024-06-14 12:18:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1351437131, now seen corresponding path program 2 times [2024-06-14 12:18:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821373292] [2024-06-14 12:18:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:49,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821373292] [2024-06-14 12:18:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821373292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:49,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538243061] [2024-06-14 12:18:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:49,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:18:49,339 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) [2024-06-14 12:18:49,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:49,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:18:49,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:49,891 INFO L124 PetriNetUnfolderBase]: 2298/3537 cut-off events. [2024-06-14 12:18:49,892 INFO L125 PetriNetUnfolderBase]: For 34053/34068 co-relation queries the response was YES. [2024-06-14 12:18:49,899 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. [2024-06-14 12:18:49,918 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 71 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-14 12:18:49,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 888 flow [2024-06-14 12:18:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-14 12:18:49,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158730158730159 [2024-06-14 12:18:49,920 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 508 flow. Second operand 7 states and 131 transitions. [2024-06-14 12:18:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 888 flow [2024-06-14 12:18:49,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 834 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:49,943 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 606 flow [2024-06-14 12:18:49,943 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} [2024-06-14 12:18:49,944 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2024-06-14 12:18:49,944 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 606 flow [2024-06-14 12:18:49,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:49,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:49,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:49,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:18:49,945 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)] === [2024-06-14 12:18:49,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1351199981, now seen corresponding path program 3 times [2024-06-14 12:18:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083331424] [2024-06-14 12:18:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:49,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:51,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083331424] [2024-06-14 12:18:51,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083331424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:51,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:51,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259466183] [2024-06-14 12:18:51,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:51,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:51,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:51,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:51,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:51,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:18:51,251 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) [2024-06-14 12:18:51,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:51,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:18:51,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:51,885 INFO L124 PetriNetUnfolderBase]: 2293/3530 cut-off events. [2024-06-14 12:18:51,885 INFO L125 PetriNetUnfolderBase]: For 39412/39427 co-relation queries the response was YES. [2024-06-14 12:18:51,891 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. [2024-06-14 12:18:51,902 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 70 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-14 12:18:51,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 846 flow [2024-06-14 12:18:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 12:18:51,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-14 12:18:51,903 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 606 flow. Second operand 7 states and 130 transitions. [2024-06-14 12:18:51,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 846 flow [2024-06-14 12:18:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 766 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:51,919 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 586 flow [2024-06-14 12:18:51,919 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} [2024-06-14 12:18:51,921 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2024-06-14 12:18:51,921 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 586 flow [2024-06-14 12:18:51,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:18:51,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:51,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:18:51,922 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)] === [2024-06-14 12:18:51,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:51,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1351199795, now seen corresponding path program 3 times [2024-06-14 12:18:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:51,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189725743] [2024-06-14 12:18:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:53,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:53,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189725743] [2024-06-14 12:18:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189725743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:53,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:18:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954792446] [2024-06-14 12:18:53,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:53,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:18:53,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:53,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:18:53,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:18:53,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:53,253 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) [2024-06-14 12:18:53,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:53,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:53,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:53,786 INFO L124 PetriNetUnfolderBase]: 2156/3397 cut-off events. [2024-06-14 12:18:53,786 INFO L125 PetriNetUnfolderBase]: For 42754/42763 co-relation queries the response was YES. [2024-06-14 12:18:53,793 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. [2024-06-14 12:18:53,803 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 67 selfloop transitions, 31 changer transitions 0/108 dead transitions. [2024-06-14 12:18:53,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 946 flow [2024-06-14 12:18:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-14 12:18:53,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 12:18:53,805 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 586 flow. Second operand 7 states and 141 transitions. [2024-06-14 12:18:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 946 flow [2024-06-14 12:18:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 876 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:18:53,822 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 640 flow [2024-06-14 12:18:53,822 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} [2024-06-14 12:18:53,822 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-06-14 12:18:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 640 flow [2024-06-14 12:18:53,823 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) [2024-06-14 12:18:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:18:53,823 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)] === [2024-06-14 12:18:53,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 681108354, now seen corresponding path program 1 times [2024-06-14 12:18:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:53,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379764179] [2024-06-14 12:18:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379764179] [2024-06-14 12:18:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379764179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:18:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948834504] [2024-06-14 12:18:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:18:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:18:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:18:55,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:55,123 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) [2024-06-14 12:18:55,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:55,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:55,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:55,813 INFO L124 PetriNetUnfolderBase]: 2166/3521 cut-off events. [2024-06-14 12:18:55,814 INFO L125 PetriNetUnfolderBase]: For 46814/46814 co-relation queries the response was YES. [2024-06-14 12:18:55,826 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. [2024-06-14 12:18:55,843 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 78 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-06-14 12:18:55,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 854 flow [2024-06-14 12:18:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:18:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:18:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-14 12:18:55,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2024-06-14 12:18:55,844 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 640 flow. Second operand 5 states and 94 transitions. [2024-06-14 12:18:55,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 854 flow [2024-06-14 12:18:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 754 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 12:18:55,876 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 590 flow [2024-06-14 12:18:55,877 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} [2024-06-14 12:18:55,877 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-06-14 12:18:55,877 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 590 flow [2024-06-14 12:18:55,878 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) [2024-06-14 12:18:55,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:55,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:55,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:18:55,880 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)] === [2024-06-14 12:18:55,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1012420494, now seen corresponding path program 1 times [2024-06-14 12:18:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786763053] [2024-06-14 12:18:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:57,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786763053] [2024-06-14 12:18:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786763053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369890857] [2024-06-14 12:18:57,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:57,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:57,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:18:57,537 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) [2024-06-14 12:18:57,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:57,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:18:57,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:18:58,189 INFO L124 PetriNetUnfolderBase]: 2150/3380 cut-off events. [2024-06-14 12:18:58,189 INFO L125 PetriNetUnfolderBase]: For 50849/50849 co-relation queries the response was YES. [2024-06-14 12:18:58,197 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. [2024-06-14 12:18:58,208 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 85 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2024-06-14 12:18:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 866 flow [2024-06-14 12:18:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:18:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:18:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 12:18:58,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:18:58,210 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 590 flow. Second operand 7 states and 140 transitions. [2024-06-14 12:18:58,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 866 flow [2024-06-14 12:18:58,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 816 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-14 12:18:58,241 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 590 flow [2024-06-14 12:18:58,241 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} [2024-06-14 12:18:58,242 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-06-14 12:18:58,242 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 590 flow [2024-06-14 12:18:58,242 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) [2024-06-14 12:18:58,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:18:58,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:18:58,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:18:58,242 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)] === [2024-06-14 12:18:58,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:18:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1012330129, now seen corresponding path program 1 times [2024-06-14 12:18:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:18:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635163825] [2024-06-14 12:18:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:18:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:18:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:18:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:18:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:18:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635163825] [2024-06-14 12:18:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635163825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:18:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:18:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:18:59,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311480568] [2024-06-14 12:18:59,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:18:59,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:18:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:18:59,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:18:59,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:18:59,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:18:59,431 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) [2024-06-14 12:18:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:18:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:18:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:00,093 INFO L124 PetriNetUnfolderBase]: 2297/3536 cut-off events. [2024-06-14 12:19:00,094 INFO L125 PetriNetUnfolderBase]: For 56533/56533 co-relation queries the response was YES. [2024-06-14 12:19:00,100 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. [2024-06-14 12:19:00,109 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 97 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-14 12:19:00,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 954 flow [2024-06-14 12:19:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 12:19:00,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-14 12:19:00,110 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 590 flow. Second operand 8 states and 151 transitions. [2024-06-14 12:19:00,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 954 flow [2024-06-14 12:19:00,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 908 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:00,126 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 646 flow [2024-06-14 12:19:00,126 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} [2024-06-14 12:19:00,127 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-06-14 12:19:00,127 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 646 flow [2024-06-14 12:19:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:00,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:00,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:19:00,127 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)] === [2024-06-14 12:19:00,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1008605479, now seen corresponding path program 2 times [2024-06-14 12:19:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:00,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492410077] [2024-06-14 12:19:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:00,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:01,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:01,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492410077] [2024-06-14 12:19:01,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492410077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:01,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:01,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:01,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841616017] [2024-06-14 12:19:01,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:01,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:01,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:01,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:01,429 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) [2024-06-14 12:19:01,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:01,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:01,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:02,096 INFO L124 PetriNetUnfolderBase]: 2351/3614 cut-off events. [2024-06-14 12:19:02,096 INFO L125 PetriNetUnfolderBase]: For 65109/65109 co-relation queries the response was YES. [2024-06-14 12:19:02,109 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. [2024-06-14 12:19:02,124 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 88 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-06-14 12:19:02,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1152 flow [2024-06-14 12:19:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 12:19:02,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-14 12:19:02,126 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 646 flow. Second operand 8 states and 154 transitions. [2024-06-14 12:19:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1152 flow [2024-06-14 12:19:02,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 1074 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:02,160 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 760 flow [2024-06-14 12:19:02,160 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} [2024-06-14 12:19:02,160 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-06-14 12:19:02,161 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 760 flow [2024-06-14 12:19:02,161 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) [2024-06-14 12:19:02,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:02,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:19:02,161 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)] === [2024-06-14 12:19:02,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1008611059, now seen corresponding path program 3 times [2024-06-14 12:19:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122488273] [2024-06-14 12:19:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122488273] [2024-06-14 12:19:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122488273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998619798] [2024-06-14 12:19:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:03,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:03,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:03,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:03,448 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) [2024-06-14 12:19:03,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:03,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:03,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:04,119 INFO L124 PetriNetUnfolderBase]: 2357/3618 cut-off events. [2024-06-14 12:19:04,119 INFO L125 PetriNetUnfolderBase]: For 73491/73491 co-relation queries the response was YES. [2024-06-14 12:19:04,127 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. [2024-06-14 12:19:04,137 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 90 selfloop transitions, 36 changer transitions 0/131 dead transitions. [2024-06-14 12:19:04,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1228 flow [2024-06-14 12:19:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 12:19:04,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 12:19:04,139 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 760 flow. Second operand 8 states and 155 transitions. [2024-06-14 12:19:04,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1228 flow [2024-06-14 12:19:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1144 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:04,162 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 816 flow [2024-06-14 12:19:04,162 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} [2024-06-14 12:19:04,163 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-06-14 12:19:04,163 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 816 flow [2024-06-14 12:19:04,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:04,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:04,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:19:04,164 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)] === [2024-06-14 12:19:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1008605262, now seen corresponding path program 1 times [2024-06-14 12:19:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583869839] [2024-06-14 12:19:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:05,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583869839] [2024-06-14 12:19:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583869839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:05,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27685156] [2024-06-14 12:19:05,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:05,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:05,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:05,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:05,502 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) [2024-06-14 12:19:05,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:05,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:05,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:06,164 INFO L124 PetriNetUnfolderBase]: 2368/3643 cut-off events. [2024-06-14 12:19:06,165 INFO L125 PetriNetUnfolderBase]: For 78933/78933 co-relation queries the response was YES. [2024-06-14 12:19:06,177 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. [2024-06-14 12:19:06,192 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 107 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-06-14 12:19:06,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 129 transitions, 1180 flow [2024-06-14 12:19:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-14 12:19:06,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:19:06,194 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 816 flow. Second operand 8 states and 145 transitions. [2024-06-14 12:19:06,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 129 transitions, 1180 flow [2024-06-14 12:19:06,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 1086 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:06,233 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 820 flow [2024-06-14 12:19:06,233 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} [2024-06-14 12:19:06,234 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-06-14 12:19:06,234 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 820 flow [2024-06-14 12:19:06,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:06,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:06,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:19:06,235 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)] === [2024-06-14 12:19:06,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1710921376, now seen corresponding path program 2 times [2024-06-14 12:19:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066162237] [2024-06-14 12:19:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:07,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:07,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066162237] [2024-06-14 12:19:07,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066162237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:07,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:07,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:07,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722957689] [2024-06-14 12:19:07,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:07,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:07,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:07,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:07,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:07,516 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) [2024-06-14 12:19:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:07,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:08,136 INFO L124 PetriNetUnfolderBase]: 2395/3689 cut-off events. [2024-06-14 12:19:08,136 INFO L125 PetriNetUnfolderBase]: For 87118/87133 co-relation queries the response was YES. [2024-06-14 12:19:08,148 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. [2024-06-14 12:19:08,163 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 95 selfloop transitions, 39 changer transitions 0/139 dead transitions. [2024-06-14 12:19:08,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 1486 flow [2024-06-14 12:19:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 12:19:08,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-14 12:19:08,165 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 820 flow. Second operand 8 states and 151 transitions. [2024-06-14 12:19:08,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 1486 flow [2024-06-14 12:19:08,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1412 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:08,197 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1006 flow [2024-06-14 12:19:08,197 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} [2024-06-14 12:19:08,197 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2024-06-14 12:19:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1006 flow [2024-06-14 12:19:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:08,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:08,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:08,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:19:08,198 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)] === [2024-06-14 12:19:08,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1473931021, now seen corresponding path program 4 times [2024-06-14 12:19:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933132767] [2024-06-14 12:19:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:08,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933132767] [2024-06-14 12:19:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933132767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:09,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399906892] [2024-06-14 12:19:09,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:09,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:09,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:09,477 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) [2024-06-14 12:19:09,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:09,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:09,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:10,121 INFO L124 PetriNetUnfolderBase]: 2417/3728 cut-off events. [2024-06-14 12:19:10,121 INFO L125 PetriNetUnfolderBase]: For 96930/96939 co-relation queries the response was YES. [2024-06-14 12:19:10,132 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. [2024-06-14 12:19:10,145 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 84 selfloop transitions, 57 changer transitions 0/146 dead transitions. [2024-06-14 12:19:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 1576 flow [2024-06-14 12:19:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 12:19:10,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-14 12:19:10,146 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1006 flow. Second operand 8 states and 154 transitions. [2024-06-14 12:19:10,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 1576 flow [2024-06-14 12:19:10,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 146 transitions, 1502 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-14 12:19:10,192 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 1188 flow [2024-06-14 12:19:10,192 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} [2024-06-14 12:19:10,192 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2024-06-14 12:19:10,192 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 1188 flow [2024-06-14 12:19:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:10,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:10,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:10,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:19:10,193 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)] === [2024-06-14 12:19:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1062478119, now seen corresponding path program 5 times [2024-06-14 12:19:10,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:10,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321346236] [2024-06-14 12:19:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:10,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321346236] [2024-06-14 12:19:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321346236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:11,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:11,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:11,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085420433] [2024-06-14 12:19:11,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:11,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:11,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:11,369 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) [2024-06-14 12:19:11,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:11,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:11,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:12,014 INFO L124 PetriNetUnfolderBase]: 2439/3759 cut-off events. [2024-06-14 12:19:12,014 INFO L125 PetriNetUnfolderBase]: For 106910/106919 co-relation queries the response was YES. [2024-06-14 12:19:12,029 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. [2024-06-14 12:19:12,046 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 89 selfloop transitions, 57 changer transitions 0/151 dead transitions. [2024-06-14 12:19:12,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 151 transitions, 1808 flow [2024-06-14 12:19:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 12:19:12,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 12:19:12,047 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 1188 flow. Second operand 8 states and 157 transitions. [2024-06-14 12:19:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 151 transitions, 1808 flow [2024-06-14 12:19:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 151 transitions, 1704 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:12,108 INFO L231 Difference]: Finished difference. Result has 109 places, 121 transitions, 1276 flow [2024-06-14 12:19:12,108 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} [2024-06-14 12:19:12,110 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-06-14 12:19:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 121 transitions, 1276 flow [2024-06-14 12:19:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:12,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:19:12,111 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)] === [2024-06-14 12:19:12,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1054853762, now seen corresponding path program 3 times [2024-06-14 12:19:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:12,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906683097] [2024-06-14 12:19:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906683097] [2024-06-14 12:19:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906683097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802922355] [2024-06-14 12:19:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:13,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:13,305 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) [2024-06-14 12:19:13,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:13,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:13,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:13,922 INFO L124 PetriNetUnfolderBase]: 2434/3750 cut-off events. [2024-06-14 12:19:13,922 INFO L125 PetriNetUnfolderBase]: For 111939/111954 co-relation queries the response was YES. [2024-06-14 12:19:13,932 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. [2024-06-14 12:19:13,946 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 100 selfloop transitions, 41 changer transitions 0/146 dead transitions. [2024-06-14 12:19:13,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 146 transitions, 1714 flow [2024-06-14 12:19:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 12:19:13,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:19:13,947 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 1276 flow. Second operand 8 states and 148 transitions. [2024-06-14 12:19:13,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 146 transitions, 1714 flow [2024-06-14 12:19:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 146 transitions, 1508 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:13,999 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 1160 flow [2024-06-14 12:19:13,999 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} [2024-06-14 12:19:14,000 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2024-06-14 12:19:14,000 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 1160 flow [2024-06-14 12:19:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:14,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:19:14,001 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)] === [2024-06-14 12:19:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1062472322, now seen corresponding path program 4 times [2024-06-14 12:19:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595970026] [2024-06-14 12:19:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595970026] [2024-06-14 12:19:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595970026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553443348] [2024-06-14 12:19:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:15,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:15,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:15,183 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) [2024-06-14 12:19:15,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:15,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:15,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:15,774 INFO L124 PetriNetUnfolderBase]: 2429/3743 cut-off events. [2024-06-14 12:19:15,774 INFO L125 PetriNetUnfolderBase]: For 117162/117177 co-relation queries the response was YES. [2024-06-14 12:19:15,787 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. [2024-06-14 12:19:15,805 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 101 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-14 12:19:15,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 144 transitions, 1496 flow [2024-06-14 12:19:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 12:19:15,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:19:15,806 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 1160 flow. Second operand 8 states and 148 transitions. [2024-06-14 12:19:15,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 144 transitions, 1496 flow [2024-06-14 12:19:15,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 144 transitions, 1384 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:15,871 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 1132 flow [2024-06-14 12:19:15,871 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} [2024-06-14 12:19:15,872 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-06-14 12:19:15,872 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 1132 flow [2024-06-14 12:19:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:15,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:15,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:19:15,873 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)] === [2024-06-14 12:19:15,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1062472539, now seen corresponding path program 6 times [2024-06-14 12:19:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499695058] [2024-06-14 12:19:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:16,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:16,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499695058] [2024-06-14 12:19:16,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499695058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:16,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:16,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:19:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230338980] [2024-06-14 12:19:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:16,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:19:16,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:19:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:19:17,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:17,050 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) [2024-06-14 12:19:17,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:17,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:17,598 INFO L124 PetriNetUnfolderBase]: 2419/3731 cut-off events. [2024-06-14 12:19:17,599 INFO L125 PetriNetUnfolderBase]: For 123981/123990 co-relation queries the response was YES. [2024-06-14 12:19:17,615 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. [2024-06-14 12:19:17,631 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 89 selfloop transitions, 56 changer transitions 0/150 dead transitions. [2024-06-14 12:19:17,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 150 transitions, 1602 flow [2024-06-14 12:19:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:19:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:19:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 12:19:17,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 12:19:17,633 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 1132 flow. Second operand 8 states and 157 transitions. [2024-06-14 12:19:17,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 150 transitions, 1602 flow [2024-06-14 12:19:17,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 150 transitions, 1414 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:19:17,692 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 1064 flow [2024-06-14 12:19:17,692 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} [2024-06-14 12:19:17,693 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-06-14 12:19:17,693 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 1064 flow [2024-06-14 12:19:17,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:19:17,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:17,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:17,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:19:17,693 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)] === [2024-06-14 12:19:17,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1054843842, now seen corresponding path program 1 times [2024-06-14 12:19:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825034032] [2024-06-14 12:19:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:19,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825034032] [2024-06-14 12:19:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825034032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:19,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462972333] [2024-06-14 12:19:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:19,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:19,362 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) [2024-06-14 12:19:19,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:19,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:19,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:19,986 INFO L124 PetriNetUnfolderBase]: 2436/3856 cut-off events. [2024-06-14 12:19:19,986 INFO L125 PetriNetUnfolderBase]: For 124979/124979 co-relation queries the response was YES. [2024-06-14 12:19:19,997 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. [2024-06-14 12:19:20,012 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 129 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2024-06-14 12:19:20,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 1495 flow [2024-06-14 12:19:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 12:19:20,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39012345679012345 [2024-06-14 12:19:20,013 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 1064 flow. Second operand 9 states and 158 transitions. [2024-06-14 12:19:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 1495 flow [2024-06-14 12:19:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 1339 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:19:20,082 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 1033 flow [2024-06-14 12:19:20,082 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} [2024-06-14 12:19:20,082 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-06-14 12:19:20,083 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 1033 flow [2024-06-14 12:19:20,083 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) [2024-06-14 12:19:20,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:20,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:20,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:19:20,083 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)] === [2024-06-14 12:19:20,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -402481432, now seen corresponding path program 1 times [2024-06-14 12:19:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:20,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097369959] [2024-06-14 12:19:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097369959] [2024-06-14 12:19:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097369959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:19:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605205663] [2024-06-14 12:19:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:21,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:19:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:19:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:19:21,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:21,207 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) [2024-06-14 12:19:21,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:21,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:21,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:21,896 INFO L124 PetriNetUnfolderBase]: 2630/4084 cut-off events. [2024-06-14 12:19:21,897 INFO L125 PetriNetUnfolderBase]: For 153060/153060 co-relation queries the response was YES. [2024-06-14 12:19:21,910 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. [2024-06-14 12:19:21,928 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 112 selfloop transitions, 11 changer transitions 0/139 dead transitions. [2024-06-14 12:19:21,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 139 transitions, 1329 flow [2024-06-14 12:19:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:19:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:19:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-14 12:19:21,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-14 12:19:21,929 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 1033 flow. Second operand 6 states and 103 transitions. [2024-06-14 12:19:21,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 139 transitions, 1329 flow [2024-06-14 12:19:22,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 139 transitions, 1249 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:22,018 INFO L231 Difference]: Finished difference. Result has 115 places, 130 transitions, 1015 flow [2024-06-14 12:19:22,019 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} [2024-06-14 12:19:22,019 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-06-14 12:19:22,020 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 130 transitions, 1015 flow [2024-06-14 12:19:22,020 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) [2024-06-14 12:19:22,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:22,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:22,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:19:22,020 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)] === [2024-06-14 12:19:22,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1320323620, now seen corresponding path program 1 times [2024-06-14 12:19:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352578650] [2024-06-14 12:19:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:23,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:23,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352578650] [2024-06-14 12:19:23,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352578650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:23,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:23,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380453609] [2024-06-14 12:19:23,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:23,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:23,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:23,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:23,734 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) [2024-06-14 12:19:23,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:23,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:23,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:24,549 INFO L124 PetriNetUnfolderBase]: 2670/4157 cut-off events. [2024-06-14 12:19:24,549 INFO L125 PetriNetUnfolderBase]: For 182411/182427 co-relation queries the response was YES. [2024-06-14 12:19:24,561 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. [2024-06-14 12:19:24,576 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 130 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-14 12:19:24,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 175 transitions, 1573 flow [2024-06-14 12:19:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 12:19:24,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-14 12:19:24,578 INFO L175 Difference]: Start difference. First operand has 115 places, 130 transitions, 1015 flow. Second operand 9 states and 170 transitions. [2024-06-14 12:19:24,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 175 transitions, 1573 flow [2024-06-14 12:19:24,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1531 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:24,666 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 1220 flow [2024-06-14 12:19:24,666 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} [2024-06-14 12:19:24,666 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-06-14 12:19:24,666 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 1220 flow [2024-06-14 12:19:24,667 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) [2024-06-14 12:19:24,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:24,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:24,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:19:24,667 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)] === [2024-06-14 12:19:24,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash -846002972, now seen corresponding path program 2 times [2024-06-14 12:19:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511584591] [2024-06-14 12:19:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:25,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:25,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511584591] [2024-06-14 12:19:25,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511584591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:25,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:25,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:25,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836195600] [2024-06-14 12:19:25,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:25,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:25,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:26,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:26,061 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) [2024-06-14 12:19:26,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:26,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:26,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:26,828 INFO L124 PetriNetUnfolderBase]: 2765/4306 cut-off events. [2024-06-14 12:19:26,828 INFO L125 PetriNetUnfolderBase]: For 194940/194964 co-relation queries the response was YES. [2024-06-14 12:19:26,845 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. [2024-06-14 12:19:26,864 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 138 selfloop transitions, 43 changer transitions 0/200 dead transitions. [2024-06-14 12:19:26,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 200 transitions, 1946 flow [2024-06-14 12:19:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 12:19:26,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-14 12:19:26,865 INFO L175 Difference]: Start difference. First operand has 124 places, 145 transitions, 1220 flow. Second operand 9 states and 176 transitions. [2024-06-14 12:19:26,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 200 transitions, 1946 flow [2024-06-14 12:19:26,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 200 transitions, 1812 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-14 12:19:26,959 INFO L231 Difference]: Finished difference. Result has 133 places, 165 transitions, 1488 flow [2024-06-14 12:19:26,959 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} [2024-06-14 12:19:26,960 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2024-06-14 12:19:26,960 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 165 transitions, 1488 flow [2024-06-14 12:19:26,960 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) [2024-06-14 12:19:26,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:26,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:19:26,960 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)] === [2024-06-14 12:19:26,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:26,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1477221296, now seen corresponding path program 3 times [2024-06-14 12:19:26,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:26,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361252349] [2024-06-14 12:19:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:28,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:28,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361252349] [2024-06-14 12:19:28,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361252349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:28,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:28,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485523874] [2024-06-14 12:19:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:28,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:28,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:28,420 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) [2024-06-14 12:19:28,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:28,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:29,323 INFO L124 PetriNetUnfolderBase]: 2879/4488 cut-off events. [2024-06-14 12:19:29,323 INFO L125 PetriNetUnfolderBase]: For 209158/209178 co-relation queries the response was YES. [2024-06-14 12:19:29,339 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. [2024-06-14 12:19:29,357 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 147 selfloop transitions, 61 changer transitions 0/227 dead transitions. [2024-06-14 12:19:29,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 227 transitions, 2401 flow [2024-06-14 12:19:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 12:19:29,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-14 12:19:29,359 INFO L175 Difference]: Start difference. First operand has 133 places, 165 transitions, 1488 flow. Second operand 9 states and 177 transitions. [2024-06-14 12:19:29,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 227 transitions, 2401 flow [2024-06-14 12:19:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 227 transitions, 2201 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:29,468 INFO L231 Difference]: Finished difference. Result has 140 places, 194 transitions, 1895 flow [2024-06-14 12:19:29,468 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} [2024-06-14 12:19:29,469 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 94 predicate places. [2024-06-14 12:19:29,469 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 194 transitions, 1895 flow [2024-06-14 12:19:29,469 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) [2024-06-14 12:19:29,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:29,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:19:29,469 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)] === [2024-06-14 12:19:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash 417223082, now seen corresponding path program 1 times [2024-06-14 12:19:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688675532] [2024-06-14 12:19:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:30,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688675532] [2024-06-14 12:19:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688675532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:30,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:30,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106258602] [2024-06-14 12:19:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:30,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:30,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:30,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:30,890 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) [2024-06-14 12:19:30,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:30,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:30,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:31,713 INFO L124 PetriNetUnfolderBase]: 3090/4725 cut-off events. [2024-06-14 12:19:31,713 INFO L125 PetriNetUnfolderBase]: For 227112/227130 co-relation queries the response was YES. [2024-06-14 12:19:31,732 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. [2024-06-14 12:19:31,753 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 170 selfloop transitions, 62 changer transitions 0/239 dead transitions. [2024-06-14 12:19:31,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 239 transitions, 2606 flow [2024-06-14 12:19:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 12:19:31,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-14 12:19:31,754 INFO L175 Difference]: Start difference. First operand has 140 places, 194 transitions, 1895 flow. Second operand 9 states and 169 transitions. [2024-06-14 12:19:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 239 transitions, 2606 flow [2024-06-14 12:19:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 239 transitions, 2503 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-14 12:19:31,890 INFO L231 Difference]: Finished difference. Result has 147 places, 206 transitions, 2098 flow [2024-06-14 12:19:31,890 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} [2024-06-14 12:19:31,890 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 101 predicate places. [2024-06-14 12:19:31,891 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 206 transitions, 2098 flow [2024-06-14 12:19:31,891 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) [2024-06-14 12:19:31,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:31,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:19:31,891 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)] === [2024-06-14 12:19:31,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 429255298, now seen corresponding path program 4 times [2024-06-14 12:19:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075050716] [2024-06-14 12:19:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075050716] [2024-06-14 12:19:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075050716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003841623] [2024-06-14 12:19:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:33,281 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) [2024-06-14 12:19:33,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:33,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:33,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:34,209 INFO L124 PetriNetUnfolderBase]: 2969/4623 cut-off events. [2024-06-14 12:19:34,209 INFO L125 PetriNetUnfolderBase]: For 244042/244110 co-relation queries the response was YES. [2024-06-14 12:19:34,227 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. [2024-06-14 12:19:34,246 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 162 selfloop transitions, 58 changer transitions 0/241 dead transitions. [2024-06-14 12:19:34,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 241 transitions, 2715 flow [2024-06-14 12:19:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 12:19:34,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-14 12:19:34,248 INFO L175 Difference]: Start difference. First operand has 147 places, 206 transitions, 2098 flow. Second operand 9 states and 176 transitions. [2024-06-14 12:19:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 241 transitions, 2715 flow [2024-06-14 12:19:34,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 241 transitions, 2573 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:34,387 INFO L231 Difference]: Finished difference. Result has 150 places, 208 transitions, 2150 flow [2024-06-14 12:19:34,387 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} [2024-06-14 12:19:34,388 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-14 12:19:34,388 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 208 transitions, 2150 flow [2024-06-14 12:19:34,388 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) [2024-06-14 12:19:34,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:34,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:34,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:19:34,388 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)] === [2024-06-14 12:19:34,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1477098226, now seen corresponding path program 1 times [2024-06-14 12:19:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129657265] [2024-06-14 12:19:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:35,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:35,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129657265] [2024-06-14 12:19:35,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129657265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:35,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:35,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:35,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804338592] [2024-06-14 12:19:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:35,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:35,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:35,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:35,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:35,577 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) [2024-06-14 12:19:35,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:35,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:35,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:36,461 INFO L124 PetriNetUnfolderBase]: 3201/4904 cut-off events. [2024-06-14 12:19:36,461 INFO L125 PetriNetUnfolderBase]: For 253563/253589 co-relation queries the response was YES. [2024-06-14 12:19:36,483 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. [2024-06-14 12:19:36,503 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 189 selfloop transitions, 65 changer transitions 0/261 dead transitions. [2024-06-14 12:19:36,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 261 transitions, 2996 flow [2024-06-14 12:19:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-14 12:19:36,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-14 12:19:36,505 INFO L175 Difference]: Start difference. First operand has 150 places, 208 transitions, 2150 flow. Second operand 10 states and 186 transitions. [2024-06-14 12:19:36,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 261 transitions, 2996 flow [2024-06-14 12:19:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 261 transitions, 2815 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:36,664 INFO L231 Difference]: Finished difference. Result has 156 places, 224 transitions, 2374 flow [2024-06-14 12:19:36,664 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} [2024-06-14 12:19:36,665 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-06-14 12:19:36,665 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 2374 flow [2024-06-14 12:19:36,665 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) [2024-06-14 12:19:36,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:36,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:36,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:19:36,665 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)] === [2024-06-14 12:19:36,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash -214605310, now seen corresponding path program 5 times [2024-06-14 12:19:36,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:36,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828453204] [2024-06-14 12:19:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:37,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828453204] [2024-06-14 12:19:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828453204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:37,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283369002] [2024-06-14 12:19:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:37,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:37,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:37,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:38,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:38,042 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) [2024-06-14 12:19:38,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:38,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:38,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:39,053 INFO L124 PetriNetUnfolderBase]: 3130/4889 cut-off events. [2024-06-14 12:19:39,053 INFO L125 PetriNetUnfolderBase]: For 270674/270695 co-relation queries the response was YES. [2024-06-14 12:19:39,072 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. [2024-06-14 12:19:39,093 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 172 selfloop transitions, 77 changer transitions 0/272 dead transitions. [2024-06-14 12:19:39,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 272 transitions, 3170 flow [2024-06-14 12:19:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-14 12:19:39,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-14 12:19:39,095 INFO L175 Difference]: Start difference. First operand has 156 places, 224 transitions, 2374 flow. Second operand 9 states and 174 transitions. [2024-06-14 12:19:39,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 272 transitions, 3170 flow [2024-06-14 12:19:39,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 272 transitions, 3037 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:39,255 INFO L231 Difference]: Finished difference. Result has 162 places, 239 transitions, 2642 flow [2024-06-14 12:19:39,255 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} [2024-06-14 12:19:39,256 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2024-06-14 12:19:39,256 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 239 transitions, 2642 flow [2024-06-14 12:19:39,256 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) [2024-06-14 12:19:39,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:39,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:39,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:19:39,257 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)] === [2024-06-14 12:19:39,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash 656584640, now seen corresponding path program 2 times [2024-06-14 12:19:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108456874] [2024-06-14 12:19:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:40,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108456874] [2024-06-14 12:19:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108456874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:40,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152668363] [2024-06-14 12:19:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:40,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:40,544 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) [2024-06-14 12:19:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:40,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:40,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:41,509 INFO L124 PetriNetUnfolderBase]: 3320/5098 cut-off events. [2024-06-14 12:19:41,509 INFO L125 PetriNetUnfolderBase]: For 288709/288733 co-relation queries the response was YES. [2024-06-14 12:19:41,533 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. [2024-06-14 12:19:41,558 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 208 selfloop transitions, 72 changer transitions 0/287 dead transitions. [2024-06-14 12:19:41,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 287 transitions, 3476 flow [2024-06-14 12:19:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 12:19:41,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:19:41,559 INFO L175 Difference]: Start difference. First operand has 162 places, 239 transitions, 2642 flow. Second operand 10 states and 185 transitions. [2024-06-14 12:19:41,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 287 transitions, 3476 flow [2024-06-14 12:19:41,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 287 transitions, 3270 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:41,749 INFO L231 Difference]: Finished difference. Result has 166 places, 250 transitions, 2761 flow [2024-06-14 12:19:41,749 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} [2024-06-14 12:19:41,750 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2024-06-14 12:19:41,750 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 250 transitions, 2761 flow [2024-06-14 12:19:41,750 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) [2024-06-14 12:19:41,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:41,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:41,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:19:41,750 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)] === [2024-06-14 12:19:41,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2062907094, now seen corresponding path program 2 times [2024-06-14 12:19:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077833088] [2024-06-14 12:19:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077833088] [2024-06-14 12:19:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077833088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993107713] [2024-06-14 12:19:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:43,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:43,176 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) [2024-06-14 12:19:43,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:43,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:43,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:44,172 INFO L124 PetriNetUnfolderBase]: 3356/5141 cut-off events. [2024-06-14 12:19:44,172 INFO L125 PetriNetUnfolderBase]: For 300482/300502 co-relation queries the response was YES. [2024-06-14 12:19:44,199 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. [2024-06-14 12:19:44,223 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 210 selfloop transitions, 75 changer transitions 0/292 dead transitions. [2024-06-14 12:19:44,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 292 transitions, 3599 flow [2024-06-14 12:19:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 12:19:44,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-14 12:19:44,225 INFO L175 Difference]: Start difference. First operand has 166 places, 250 transitions, 2761 flow. Second operand 9 states and 170 transitions. [2024-06-14 12:19:44,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 292 transitions, 3599 flow [2024-06-14 12:19:44,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 292 transitions, 3420 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 12:19:44,417 INFO L231 Difference]: Finished difference. Result has 171 places, 262 transitions, 2954 flow [2024-06-14 12:19:44,417 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} [2024-06-14 12:19:44,417 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2024-06-14 12:19:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 262 transitions, 2954 flow [2024-06-14 12:19:44,418 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) [2024-06-14 12:19:44,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:44,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:19:44,418 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)] === [2024-06-14 12:19:44,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1479899696, now seen corresponding path program 6 times [2024-06-14 12:19:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569225411] [2024-06-14 12:19:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569225411] [2024-06-14 12:19:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569225411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:45,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101602958] [2024-06-14 12:19:45,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:45,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:45,830 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) [2024-06-14 12:19:45,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:45,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:45,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:46,829 INFO L124 PetriNetUnfolderBase]: 3215/5007 cut-off events. [2024-06-14 12:19:46,830 INFO L125 PetriNetUnfolderBase]: For 317926/318018 co-relation queries the response was YES. [2024-06-14 12:19:46,854 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. [2024-06-14 12:19:46,876 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 204 selfloop transitions, 67 changer transitions 0/296 dead transitions. [2024-06-14 12:19:46,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 296 transitions, 3688 flow [2024-06-14 12:19:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 12:19:46,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-14 12:19:46,877 INFO L175 Difference]: Start difference. First operand has 171 places, 262 transitions, 2954 flow. Second operand 9 states and 177 transitions. [2024-06-14 12:19:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 296 transitions, 3688 flow [2024-06-14 12:19:47,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 296 transitions, 3534 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:47,088 INFO L231 Difference]: Finished difference. Result has 174 places, 266 transitions, 3040 flow [2024-06-14 12:19:47,088 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} [2024-06-14 12:19:47,088 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2024-06-14 12:19:47,088 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 266 transitions, 3040 flow [2024-06-14 12:19:47,089 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) [2024-06-14 12:19:47,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:47,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:19:47,089 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)] === [2024-06-14 12:19:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1361627566, now seen corresponding path program 3 times [2024-06-14 12:19:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866432363] [2024-06-14 12:19:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866432363] [2024-06-14 12:19:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866432363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609489292] [2024-06-14 12:19:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:48,488 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) [2024-06-14 12:19:48,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:48,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:48,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:49,576 INFO L124 PetriNetUnfolderBase]: 3616/5554 cut-off events. [2024-06-14 12:19:49,576 INFO L125 PetriNetUnfolderBase]: For 351448/351466 co-relation queries the response was YES. [2024-06-14 12:19:49,605 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. [2024-06-14 12:19:49,631 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 210 selfloop transitions, 114 changer transitions 0/331 dead transitions. [2024-06-14 12:19:49,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 331 transitions, 4299 flow [2024-06-14 12:19:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-14 12:19:49,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889 [2024-06-14 12:19:49,632 INFO L175 Difference]: Start difference. First operand has 174 places, 266 transitions, 3040 flow. Second operand 10 states and 193 transitions. [2024-06-14 12:19:49,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 331 transitions, 4299 flow [2024-06-14 12:19:49,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 331 transitions, 4103 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-14 12:19:49,880 INFO L231 Difference]: Finished difference. Result has 180 places, 289 transitions, 3496 flow [2024-06-14 12:19:49,881 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} [2024-06-14 12:19:49,881 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 134 predicate places. [2024-06-14 12:19:49,881 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 289 transitions, 3496 flow [2024-06-14 12:19:49,881 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) [2024-06-14 12:19:49,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:49,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:49,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:19:49,881 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)] === [2024-06-14 12:19:49,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1213800222, now seen corresponding path program 4 times [2024-06-14 12:19:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:49,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642199450] [2024-06-14 12:19:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642199450] [2024-06-14 12:19:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642199450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672392292] [2024-06-14 12:19:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:51,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:51,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:51,294 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) [2024-06-14 12:19:51,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:51,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:51,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:52,341 INFO L124 PetriNetUnfolderBase]: 3638/5597 cut-off events. [2024-06-14 12:19:52,342 INFO L125 PetriNetUnfolderBase]: For 369979/370017 co-relation queries the response was YES. [2024-06-14 12:19:52,377 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. [2024-06-14 12:19:52,405 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 217 selfloop transitions, 110 changer transitions 0/334 dead transitions. [2024-06-14 12:19:52,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 334 transitions, 4578 flow [2024-06-14 12:19:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 12:19:52,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-14 12:19:52,406 INFO L175 Difference]: Start difference. First operand has 180 places, 289 transitions, 3496 flow. Second operand 10 states and 194 transitions. [2024-06-14 12:19:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 334 transitions, 4578 flow [2024-06-14 12:19:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 334 transitions, 4416 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-14 12:19:52,755 INFO L231 Difference]: Finished difference. Result has 187 places, 293 transitions, 3708 flow [2024-06-14 12:19:52,756 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} [2024-06-14 12:19:52,756 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-06-14 12:19:52,756 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 293 transitions, 3708 flow [2024-06-14 12:19:52,757 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) [2024-06-14 12:19:52,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:52,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:52,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:19:52,757 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)] === [2024-06-14 12:19:52,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1361812016, now seen corresponding path program 7 times [2024-06-14 12:19:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203744106] [2024-06-14 12:19:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203744106] [2024-06-14 12:19:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203744106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757596238] [2024-06-14 12:19:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:54,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:54,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:54,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:19:54,339 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) [2024-06-14 12:19:54,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:54,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:19:54,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:55,500 INFO L124 PetriNetUnfolderBase]: 3449/5408 cut-off events. [2024-06-14 12:19:55,500 INFO L125 PetriNetUnfolderBase]: For 385014/385037 co-relation queries the response was YES. [2024-06-14 12:19:55,527 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. [2024-06-14 12:19:55,552 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 224 selfloop transitions, 75 changer transitions 0/327 dead transitions. [2024-06-14 12:19:55,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 327 transitions, 4513 flow [2024-06-14 12:19:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:19:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:19:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 12:19:55,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-14 12:19:55,553 INFO L175 Difference]: Start difference. First operand has 187 places, 293 transitions, 3708 flow. Second operand 9 states and 177 transitions. [2024-06-14 12:19:55,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 327 transitions, 4513 flow [2024-06-14 12:19:55,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 327 transitions, 4273 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:55,844 INFO L231 Difference]: Finished difference. Result has 191 places, 296 transitions, 3757 flow [2024-06-14 12:19:55,844 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} [2024-06-14 12:19:55,845 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 145 predicate places. [2024-06-14 12:19:55,845 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 296 transitions, 3757 flow [2024-06-14 12:19:55,845 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) [2024-06-14 12:19:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:55,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:19:55,846 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)] === [2024-06-14 12:19:55,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1361807056, now seen corresponding path program 5 times [2024-06-14 12:19:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309613958] [2024-06-14 12:19:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:55,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309613958] [2024-06-14 12:19:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309613958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:19:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686055128] [2024-06-14 12:19:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:57,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:19:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:19:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:19:57,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:57,152 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) [2024-06-14 12:19:57,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:57,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:19:58,211 INFO L124 PetriNetUnfolderBase]: 3663/5638 cut-off events. [2024-06-14 12:19:58,211 INFO L125 PetriNetUnfolderBase]: For 400921/400939 co-relation queries the response was YES. [2024-06-14 12:19:58,242 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. [2024-06-14 12:19:58,267 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 225 selfloop transitions, 107 changer transitions 0/339 dead transitions. [2024-06-14 12:19:58,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 339 transitions, 4836 flow [2024-06-14 12:19:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:19:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:19:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 12:19:58,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:19:58,269 INFO L175 Difference]: Start difference. First operand has 191 places, 296 transitions, 3757 flow. Second operand 10 states and 195 transitions. [2024-06-14 12:19:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 339 transitions, 4836 flow [2024-06-14 12:19:58,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 339 transitions, 4611 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-14 12:19:58,616 INFO L231 Difference]: Finished difference. Result has 195 places, 299 transitions, 3846 flow [2024-06-14 12:19:58,616 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} [2024-06-14 12:19:58,616 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 149 predicate places. [2024-06-14 12:19:58,616 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 299 transitions, 3846 flow [2024-06-14 12:19:58,617 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) [2024-06-14 12:19:58,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:19:58,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:19:58,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:19:58,617 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)] === [2024-06-14 12:19:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:19:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2031965023, now seen corresponding path program 1 times [2024-06-14 12:19:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:19:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423777534] [2024-06-14 12:19:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:19:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:19:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:19:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:19:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:19:59,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423777534] [2024-06-14 12:19:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423777534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:19:59,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:19:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:19:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354017673] [2024-06-14 12:19:59,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:19:59,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:19:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:19:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:19:59,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:19:59,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:19:59,661 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) [2024-06-14 12:19:59,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:19:59,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:19:59,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:00,751 INFO L124 PetriNetUnfolderBase]: 3761/5764 cut-off events. [2024-06-14 12:20:00,751 INFO L125 PetriNetUnfolderBase]: For 426695/426704 co-relation queries the response was YES. [2024-06-14 12:20:00,783 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. [2024-06-14 12:20:00,807 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 272 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2024-06-14 12:20:00,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 323 transitions, 4658 flow [2024-06-14 12:20:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:20:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:20:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-14 12:20:00,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-14 12:20:00,810 INFO L175 Difference]: Start difference. First operand has 195 places, 299 transitions, 3846 flow. Second operand 7 states and 129 transitions. [2024-06-14 12:20:00,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 323 transitions, 4658 flow [2024-06-14 12:20:01,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 323 transitions, 4433 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:01,207 INFO L231 Difference]: Finished difference. Result has 196 places, 305 transitions, 3756 flow [2024-06-14 12:20:01,207 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} [2024-06-14 12:20:01,207 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2024-06-14 12:20:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 305 transitions, 3756 flow [2024-06-14 12:20:01,208 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) [2024-06-14 12:20:01,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:01,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:01,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:20:01,208 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)] === [2024-06-14 12:20:01,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1412159720, now seen corresponding path program 8 times [2024-06-14 12:20:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625405908] [2024-06-14 12:20:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625405908] [2024-06-14 12:20:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625405908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172802286] [2024-06-14 12:20:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:02,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:02,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:20:02,624 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) [2024-06-14 12:20:02,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:02,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:20:02,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:03,883 INFO L124 PetriNetUnfolderBase]: 3520/5488 cut-off events. [2024-06-14 12:20:03,883 INFO L125 PetriNetUnfolderBase]: For 443232/443369 co-relation queries the response was YES. [2024-06-14 12:20:03,913 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. [2024-06-14 12:20:03,939 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 228 selfloop transitions, 79 changer transitions 0/335 dead transitions. [2024-06-14 12:20:03,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 335 transitions, 4562 flow [2024-06-14 12:20:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:20:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:20:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 12:20:03,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 12:20:03,941 INFO L175 Difference]: Start difference. First operand has 196 places, 305 transitions, 3756 flow. Second operand 8 states and 157 transitions. [2024-06-14 12:20:03,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 335 transitions, 4562 flow [2024-06-14 12:20:04,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 335 transitions, 4491 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-14 12:20:04,263 INFO L231 Difference]: Finished difference. Result has 201 places, 307 transitions, 3955 flow [2024-06-14 12:20:04,264 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} [2024-06-14 12:20:04,264 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 155 predicate places. [2024-06-14 12:20:04,264 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 307 transitions, 3955 flow [2024-06-14 12:20:04,264 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) [2024-06-14 12:20:04,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:04,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:20:04,265 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)] === [2024-06-14 12:20:04,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1450871641, now seen corresponding path program 1 times [2024-06-14 12:20:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613768663] [2024-06-14 12:20:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613768663] [2024-06-14 12:20:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613768663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:05,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606503832] [2024-06-14 12:20:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:05,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:05,743 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) [2024-06-14 12:20:05,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:05,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:05,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:06,980 INFO L124 PetriNetUnfolderBase]: 3727/5727 cut-off events. [2024-06-14 12:20:06,981 INFO L125 PetriNetUnfolderBase]: For 451949/451957 co-relation queries the response was YES. [2024-06-14 12:20:07,017 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. [2024-06-14 12:20:07,047 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 254 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-06-14 12:20:07,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 345 transitions, 4853 flow [2024-06-14 12:20:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:20:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:20:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 12:20:07,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-14 12:20:07,048 INFO L175 Difference]: Start difference. First operand has 201 places, 307 transitions, 3955 flow. Second operand 10 states and 187 transitions. [2024-06-14 12:20:07,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 345 transitions, 4853 flow [2024-06-14 12:20:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 345 transitions, 4635 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:07,541 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 4022 flow [2024-06-14 12:20:07,542 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} [2024-06-14 12:20:07,542 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 159 predicate places. [2024-06-14 12:20:07,543 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 4022 flow [2024-06-14 12:20:07,543 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) [2024-06-14 12:20:07,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:07,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:20:07,543 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)] === [2024-06-14 12:20:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1412159596, now seen corresponding path program 3 times [2024-06-14 12:20:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257966796] [2024-06-14 12:20:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257966796] [2024-06-14 12:20:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257966796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450677996] [2024-06-14 12:20:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:08,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:08,929 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) [2024-06-14 12:20:08,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:08,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:08,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:10,083 INFO L124 PetriNetUnfolderBase]: 3728/5725 cut-off events. [2024-06-14 12:20:10,083 INFO L125 PetriNetUnfolderBase]: For 470981/470985 co-relation queries the response was YES. [2024-06-14 12:20:10,121 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. [2024-06-14 12:20:10,149 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 236 selfloop transitions, 95 changer transitions 0/338 dead transitions. [2024-06-14 12:20:10,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 338 transitions, 4790 flow [2024-06-14 12:20:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:20:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:20:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 12:20:10,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-14 12:20:10,151 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 4022 flow. Second operand 8 states and 151 transitions. [2024-06-14 12:20:10,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 338 transitions, 4790 flow [2024-06-14 12:20:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 338 transitions, 4541 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:10,707 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 3999 flow [2024-06-14 12:20:10,707 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} [2024-06-14 12:20:10,708 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 159 predicate places. [2024-06-14 12:20:10,708 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 3999 flow [2024-06-14 12:20:10,708 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) [2024-06-14 12:20:10,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:10,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:10,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:20:10,708 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)] === [2024-06-14 12:20:10,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1412039440, now seen corresponding path program 6 times [2024-06-14 12:20:10,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:10,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582122877] [2024-06-14 12:20:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:10,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582122877] [2024-06-14 12:20:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582122877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826336619] [2024-06-14 12:20:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:11,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:11,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:11,984 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) [2024-06-14 12:20:11,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:11,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:11,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:13,247 INFO L124 PetriNetUnfolderBase]: 3746/5763 cut-off events. [2024-06-14 12:20:13,247 INFO L125 PetriNetUnfolderBase]: For 488966/488978 co-relation queries the response was YES. [2024-06-14 12:20:13,277 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. [2024-06-14 12:20:13,302 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 252 selfloop transitions, 87 changer transitions 0/346 dead transitions. [2024-06-14 12:20:13,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 346 transitions, 4905 flow [2024-06-14 12:20:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 12:20:13,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-14 12:20:13,303 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 3999 flow. Second operand 9 states and 168 transitions. [2024-06-14 12:20:13,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 346 transitions, 4905 flow [2024-06-14 12:20:13,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 346 transitions, 4618 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:13,711 INFO L231 Difference]: Finished difference. Result has 206 places, 313 transitions, 4014 flow [2024-06-14 12:20:13,711 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} [2024-06-14 12:20:13,712 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 160 predicate places. [2024-06-14 12:20:13,712 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 313 transitions, 4014 flow [2024-06-14 12:20:13,712 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) [2024-06-14 12:20:13,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:13,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:20:13,712 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)] === [2024-06-14 12:20:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1296753230, now seen corresponding path program 9 times [2024-06-14 12:20:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327626487] [2024-06-14 12:20:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327626487] [2024-06-14 12:20:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327626487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:14,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314922401] [2024-06-14 12:20:14,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:14,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:14,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:14,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:15,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:20:15,172 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) [2024-06-14 12:20:15,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:15,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:20:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:16,324 INFO L124 PetriNetUnfolderBase]: 3552/5568 cut-off events. [2024-06-14 12:20:16,324 INFO L125 PetriNetUnfolderBase]: For 480779/480797 co-relation queries the response was YES. [2024-06-14 12:20:16,360 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. [2024-06-14 12:20:16,388 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 231 selfloop transitions, 83 changer transitions 0/342 dead transitions. [2024-06-14 12:20:16,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 342 transitions, 4838 flow [2024-06-14 12:20:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:20:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:20:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 12:20:16,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 12:20:16,389 INFO L175 Difference]: Start difference. First operand has 206 places, 313 transitions, 4014 flow. Second operand 8 states and 157 transitions. [2024-06-14 12:20:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 342 transitions, 4838 flow [2024-06-14 12:20:16,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 342 transitions, 4602 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:16,933 INFO L231 Difference]: Finished difference. Result has 207 places, 315 transitions, 4052 flow [2024-06-14 12:20:16,933 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} [2024-06-14 12:20:16,934 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 161 predicate places. [2024-06-14 12:20:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 315 transitions, 4052 flow [2024-06-14 12:20:16,934 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) [2024-06-14 12:20:16,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:16,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:20:16,935 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)] === [2024-06-14 12:20:16,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1539132865, now seen corresponding path program 2 times [2024-06-14 12:20:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587568003] [2024-06-14 12:20:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587568003] [2024-06-14 12:20:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587568003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:18,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:20:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96875461] [2024-06-14 12:20:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:18,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:20:18,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:20:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:20:18,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:18,528 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) [2024-06-14 12:20:18,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:18,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:20,027 INFO L124 PetriNetUnfolderBase]: 3935/6036 cut-off events. [2024-06-14 12:20:20,027 INFO L125 PetriNetUnfolderBase]: For 528554/528562 co-relation queries the response was YES. [2024-06-14 12:20:20,058 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. [2024-06-14 12:20:20,084 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 211 selfloop transitions, 145 changer transitions 0/363 dead transitions. [2024-06-14 12:20:20,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 363 transitions, 5622 flow [2024-06-14 12:20:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 12:20:20,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-14 12:20:20,086 INFO L175 Difference]: Start difference. First operand has 207 places, 315 transitions, 4052 flow. Second operand 9 states and 177 transitions. [2024-06-14 12:20:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 363 transitions, 5622 flow [2024-06-14 12:20:20,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 363 transitions, 5354 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:20,522 INFO L231 Difference]: Finished difference. Result has 212 places, 326 transitions, 4530 flow [2024-06-14 12:20:20,522 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} [2024-06-14 12:20:20,523 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 166 predicate places. [2024-06-14 12:20:20,523 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 326 transitions, 4530 flow [2024-06-14 12:20:20,523 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) [2024-06-14 12:20:20,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:20,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:20,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:20:20,524 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)] === [2024-06-14 12:20:20,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1296568780, now seen corresponding path program 7 times [2024-06-14 12:20:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113268278] [2024-06-14 12:20:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:21,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113268278] [2024-06-14 12:20:21,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113268278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:21,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145245719] [2024-06-14 12:20:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:21,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:21,821 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) [2024-06-14 12:20:21,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:21,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:21,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:23,114 INFO L124 PetriNetUnfolderBase]: 3921/6018 cut-off events. [2024-06-14 12:20:23,115 INFO L125 PetriNetUnfolderBase]: For 530716/530724 co-relation queries the response was YES. [2024-06-14 12:20:23,154 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. [2024-06-14 12:20:23,185 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 201 selfloop transitions, 153 changer transitions 0/361 dead transitions. [2024-06-14 12:20:23,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 361 transitions, 5574 flow [2024-06-14 12:20:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-14 12:20:23,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-14 12:20:23,186 INFO L175 Difference]: Start difference. First operand has 212 places, 326 transitions, 4530 flow. Second operand 9 states and 174 transitions. [2024-06-14 12:20:23,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 361 transitions, 5574 flow [2024-06-14 12:20:23,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 361 transitions, 5277 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-14 12:20:23,781 INFO L231 Difference]: Finished difference. Result has 217 places, 326 transitions, 4555 flow [2024-06-14 12:20:23,781 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} [2024-06-14 12:20:23,781 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 171 predicate places. [2024-06-14 12:20:23,781 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 326 transitions, 4555 flow [2024-06-14 12:20:23,782 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) [2024-06-14 12:20:23,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:23,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:23,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:20:23,782 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)] === [2024-06-14 12:20:23,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1202170530, now seen corresponding path program 8 times [2024-06-14 12:20:23,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223947948] [2024-06-14 12:20:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223947948] [2024-06-14 12:20:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223947948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:24,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164043928] [2024-06-14 12:20:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:24,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:25,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:25,030 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) [2024-06-14 12:20:25,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:25,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:25,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:26,342 INFO L124 PetriNetUnfolderBase]: 3927/6032 cut-off events. [2024-06-14 12:20:26,342 INFO L125 PetriNetUnfolderBase]: For 531845/531853 co-relation queries the response was YES. [2024-06-14 12:20:26,383 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. [2024-06-14 12:20:26,413 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 216 selfloop transitions, 141 changer transitions 0/364 dead transitions. [2024-06-14 12:20:26,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 364 transitions, 5727 flow [2024-06-14 12:20:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-14 12:20:26,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345679012345679 [2024-06-14 12:20:26,415 INFO L175 Difference]: Start difference. First operand has 217 places, 326 transitions, 4555 flow. Second operand 9 states and 176 transitions. [2024-06-14 12:20:26,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 364 transitions, 5727 flow [2024-06-14 12:20:27,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 364 transitions, 5423 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:27,091 INFO L231 Difference]: Finished difference. Result has 219 places, 329 transitions, 4671 flow [2024-06-14 12:20:27,091 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} [2024-06-14 12:20:27,092 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-06-14 12:20:27,092 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 329 transitions, 4671 flow [2024-06-14 12:20:27,092 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) [2024-06-14 12:20:27,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:27,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:27,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:20:27,093 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)] === [2024-06-14 12:20:27,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash -377882093, now seen corresponding path program 2 times [2024-06-14 12:20:27,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:27,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588885110] [2024-06-14 12:20:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:27,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:28,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:28,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588885110] [2024-06-14 12:20:28,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588885110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:28,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:28,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:20:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967103326] [2024-06-14 12:20:28,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:28,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:20:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:20:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:20:28,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:28,216 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) [2024-06-14 12:20:28,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:28,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:28,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:29,557 INFO L124 PetriNetUnfolderBase]: 4072/6229 cut-off events. [2024-06-14 12:20:29,557 INFO L125 PetriNetUnfolderBase]: For 549551/549565 co-relation queries the response was YES. [2024-06-14 12:20:29,594 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. [2024-06-14 12:20:29,625 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 293 selfloop transitions, 27 changer transitions 0/346 dead transitions. [2024-06-14 12:20:29,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 346 transitions, 5495 flow [2024-06-14 12:20:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:20:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:20:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-14 12:20:29,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-14 12:20:29,626 INFO L175 Difference]: Start difference. First operand has 219 places, 329 transitions, 4671 flow. Second operand 6 states and 112 transitions. [2024-06-14 12:20:29,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 346 transitions, 5495 flow [2024-06-14 12:20:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 346 transitions, 5208 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:30,118 INFO L231 Difference]: Finished difference. Result has 219 places, 332 transitions, 4491 flow [2024-06-14 12:20:30,118 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} [2024-06-14 12:20:30,119 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-06-14 12:20:30,119 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 332 transitions, 4491 flow [2024-06-14 12:20:30,119 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) [2024-06-14 12:20:30,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:30,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:30,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:20:30,119 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)] === [2024-06-14 12:20:30,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1030095796, now seen corresponding path program 9 times [2024-06-14 12:20:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:30,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302476958] [2024-06-14 12:20:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:30,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302476958] [2024-06-14 12:20:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302476958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671392564] [2024-06-14 12:20:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:31,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:31,450 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) [2024-06-14 12:20:31,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:31,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:31,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:32,686 INFO L124 PetriNetUnfolderBase]: 4144/6368 cut-off events. [2024-06-14 12:20:32,686 INFO L125 PetriNetUnfolderBase]: For 563079/563097 co-relation queries the response was YES. [2024-06-14 12:20:32,728 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. [2024-06-14 12:20:32,757 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 204 selfloop transitions, 177 changer transitions 0/388 dead transitions. [2024-06-14 12:20:32,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 388 transitions, 6469 flow [2024-06-14 12:20:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-14 12:20:32,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454320987654321 [2024-06-14 12:20:32,759 INFO L175 Difference]: Start difference. First operand has 219 places, 332 transitions, 4491 flow. Second operand 9 states and 184 transitions. [2024-06-14 12:20:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 388 transitions, 6469 flow [2024-06-14 12:20:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 388 transitions, 6399 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 12:20:33,307 INFO L231 Difference]: Finished difference. Result has 225 places, 346 transitions, 5224 flow [2024-06-14 12:20:33,307 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} [2024-06-14 12:20:33,308 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 179 predicate places. [2024-06-14 12:20:33,308 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 346 transitions, 5224 flow [2024-06-14 12:20:33,308 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) [2024-06-14 12:20:33,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:33,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:33,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:20:33,308 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)] === [2024-06-14 12:20:33,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1650992036, now seen corresponding path program 10 times [2024-06-14 12:20:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971886916] [2024-06-14 12:20:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:34,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:34,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971886916] [2024-06-14 12:20:34,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971886916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:34,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:34,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179434132] [2024-06-14 12:20:34,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:34,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:34,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:34,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:34,611 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) [2024-06-14 12:20:34,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:34,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:34,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:35,989 INFO L124 PetriNetUnfolderBase]: 4166/6400 cut-off events. [2024-06-14 12:20:35,989 INFO L125 PetriNetUnfolderBase]: For 574394/574412 co-relation queries the response was YES. [2024-06-14 12:20:36,025 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. [2024-06-14 12:20:36,056 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 200 selfloop transitions, 186 changer transitions 0/393 dead transitions. [2024-06-14 12:20:36,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 393 transitions, 7004 flow [2024-06-14 12:20:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-14 12:20:36,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-14 12:20:36,058 INFO L175 Difference]: Start difference. First operand has 225 places, 346 transitions, 5224 flow. Second operand 9 states and 183 transitions. [2024-06-14 12:20:36,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 393 transitions, 7004 flow [2024-06-14 12:20:36,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 393 transitions, 6729 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-14 12:20:36,609 INFO L231 Difference]: Finished difference. Result has 233 places, 354 transitions, 5638 flow [2024-06-14 12:20:36,609 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} [2024-06-14 12:20:36,610 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 187 predicate places. [2024-06-14 12:20:36,610 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 354 transitions, 5638 flow [2024-06-14 12:20:36,610 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) [2024-06-14 12:20:36,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:36,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:20:36,610 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)] === [2024-06-14 12:20:36,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1659272756, now seen corresponding path program 11 times [2024-06-14 12:20:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578329711] [2024-06-14 12:20:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:37,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578329711] [2024-06-14 12:20:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578329711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108598669] [2024-06-14 12:20:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:37,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:37,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:37,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:37,907 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) [2024-06-14 12:20:37,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:37,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:37,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:39,392 INFO L124 PetriNetUnfolderBase]: 4152/6382 cut-off events. [2024-06-14 12:20:39,392 INFO L125 PetriNetUnfolderBase]: For 588387/588405 co-relation queries the response was YES. [2024-06-14 12:20:39,438 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. [2024-06-14 12:20:39,476 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 185 selfloop transitions, 199 changer transitions 0/391 dead transitions. [2024-06-14 12:20:39,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 391 transitions, 6972 flow [2024-06-14 12:20:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 12:20:39,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:20:39,478 INFO L175 Difference]: Start difference. First operand has 233 places, 354 transitions, 5638 flow. Second operand 9 states and 180 transitions. [2024-06-14 12:20:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 391 transitions, 6972 flow [2024-06-14 12:20:40,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 391 transitions, 6540 flow, removed 96 selfloop flow, removed 4 redundant places. [2024-06-14 12:20:40,276 INFO L231 Difference]: Finished difference. Result has 238 places, 354 transitions, 5614 flow [2024-06-14 12:20:40,276 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} [2024-06-14 12:20:40,276 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 192 predicate places. [2024-06-14 12:20:40,277 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 354 transitions, 5614 flow [2024-06-14 12:20:40,277 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) [2024-06-14 12:20:40,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:40,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:40,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:20:40,277 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)] === [2024-06-14 12:20:40,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1492693494, now seen corresponding path program 12 times [2024-06-14 12:20:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:40,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576465756] [2024-06-14 12:20:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:41,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576465756] [2024-06-14 12:20:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576465756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664689734] [2024-06-14 12:20:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:41,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:41,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:41,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:41,571 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) [2024-06-14 12:20:41,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:41,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:42,864 INFO L124 PetriNetUnfolderBase]: 4238/6516 cut-off events. [2024-06-14 12:20:42,865 INFO L125 PetriNetUnfolderBase]: For 621539/621557 co-relation queries the response was YES. [2024-06-14 12:20:42,912 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. [2024-06-14 12:20:42,945 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 220 selfloop transitions, 176 changer transitions 0/403 dead transitions. [2024-06-14 12:20:42,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 403 transitions, 7661 flow [2024-06-14 12:20:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-14 12:20:42,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2024-06-14 12:20:42,946 INFO L175 Difference]: Start difference. First operand has 238 places, 354 transitions, 5614 flow. Second operand 9 states and 188 transitions. [2024-06-14 12:20:42,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 403 transitions, 7661 flow [2024-06-14 12:20:43,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 403 transitions, 7286 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:20:43,677 INFO L231 Difference]: Finished difference. Result has 242 places, 362 transitions, 5910 flow [2024-06-14 12:20:43,677 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} [2024-06-14 12:20:43,678 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 196 predicate places. [2024-06-14 12:20:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 362 transitions, 5910 flow [2024-06-14 12:20:43,678 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) [2024-06-14 12:20:43,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:43,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:43,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:20:43,678 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)] === [2024-06-14 12:20:43,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1780672018, now seen corresponding path program 13 times [2024-06-14 12:20:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578040263] [2024-06-14 12:20:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:44,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578040263] [2024-06-14 12:20:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578040263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:44,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711573644] [2024-06-14 12:20:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:44,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:44,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:44,951 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) [2024-06-14 12:20:44,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:44,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:44,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:46,336 INFO L124 PetriNetUnfolderBase]: 4224/6498 cut-off events. [2024-06-14 12:20:46,336 INFO L125 PetriNetUnfolderBase]: For 647487/647505 co-relation queries the response was YES. [2024-06-14 12:20:46,383 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. [2024-06-14 12:20:46,417 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 218 selfloop transitions, 176 changer transitions 0/401 dead transitions. [2024-06-14 12:20:46,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 401 transitions, 7494 flow [2024-06-14 12:20:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-14 12:20:46,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-14 12:20:46,418 INFO L175 Difference]: Start difference. First operand has 242 places, 362 transitions, 5910 flow. Second operand 9 states and 185 transitions. [2024-06-14 12:20:46,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 401 transitions, 7494 flow [2024-06-14 12:20:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 401 transitions, 6649 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:47,327 INFO L231 Difference]: Finished difference. Result has 243 places, 362 transitions, 5427 flow [2024-06-14 12:20:47,327 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} [2024-06-14 12:20:47,328 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2024-06-14 12:20:47,328 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 362 transitions, 5427 flow [2024-06-14 12:20:47,328 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) [2024-06-14 12:20:47,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:47,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:20:47,328 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)] === [2024-06-14 12:20:47,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1780856468, now seen corresponding path program 10 times [2024-06-14 12:20:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79506982] [2024-06-14 12:20:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:48,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:48,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79506982] [2024-06-14 12:20:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79506982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276486773] [2024-06-14 12:20:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:48,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:20:48,901 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) [2024-06-14 12:20:48,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:48,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:20:48,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:50,205 INFO L124 PetriNetUnfolderBase]: 3944/6174 cut-off events. [2024-06-14 12:20:50,205 INFO L125 PetriNetUnfolderBase]: For 642737/642775 co-relation queries the response was YES. [2024-06-14 12:20:50,250 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. [2024-06-14 12:20:50,281 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 275 selfloop transitions, 86 changer transitions 0/389 dead transitions. [2024-06-14 12:20:50,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 389 transitions, 6339 flow [2024-06-14 12:20:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:20:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:20:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 12:20:50,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:20:50,282 INFO L175 Difference]: Start difference. First operand has 243 places, 362 transitions, 5427 flow. Second operand 8 states and 156 transitions. [2024-06-14 12:20:50,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 389 transitions, 6339 flow [2024-06-14 12:20:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 389 transitions, 5914 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:20:51,106 INFO L231 Difference]: Finished difference. Result has 243 places, 364 transitions, 5279 flow [2024-06-14 12:20:51,107 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} [2024-06-14 12:20:51,107 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2024-06-14 12:20:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 364 transitions, 5279 flow [2024-06-14 12:20:51,107 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) [2024-06-14 12:20:51,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:51,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:20:51,108 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)] === [2024-06-14 12:20:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1780851508, now seen corresponding path program 14 times [2024-06-14 12:20:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116874998] [2024-06-14 12:20:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116874998] [2024-06-14 12:20:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116874998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:20:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385244792] [2024-06-14 12:20:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:20:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:20:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:20:52,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:52,422 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) [2024-06-14 12:20:52,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:52,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:53,797 INFO L124 PetriNetUnfolderBase]: 4229/6509 cut-off events. [2024-06-14 12:20:53,797 INFO L125 PetriNetUnfolderBase]: For 660408/660426 co-relation queries the response was YES. [2024-06-14 12:20:53,845 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. [2024-06-14 12:20:53,879 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 209 selfloop transitions, 187 changer transitions 0/403 dead transitions. [2024-06-14 12:20:53,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 403 transitions, 6761 flow [2024-06-14 12:20:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:20:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:20:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 12:20:53,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2024-06-14 12:20:53,880 INFO L175 Difference]: Start difference. First operand has 243 places, 364 transitions, 5279 flow. Second operand 9 states and 182 transitions. [2024-06-14 12:20:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 403 transitions, 6761 flow [2024-06-14 12:20:54,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 403 transitions, 6502 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:54,507 INFO L231 Difference]: Finished difference. Result has 246 places, 367 transitions, 5518 flow [2024-06-14 12:20:54,507 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} [2024-06-14 12:20:54,507 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 200 predicate places. [2024-06-14 12:20:54,507 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 367 transitions, 5518 flow [2024-06-14 12:20:54,508 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) [2024-06-14 12:20:54,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:54,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:54,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:20:54,508 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)] === [2024-06-14 12:20:54,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 407963039, now seen corresponding path program 3 times [2024-06-14 12:20:54,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:54,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699994145] [2024-06-14 12:20:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:55,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699994145] [2024-06-14 12:20:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699994145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:55,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:55,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:20:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242294651] [2024-06-14 12:20:55,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:55,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:20:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:20:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:20:55,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:20:55,596 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) [2024-06-14 12:20:55,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:55,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:20:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:20:57,009 INFO L124 PetriNetUnfolderBase]: 4416/6727 cut-off events. [2024-06-14 12:20:57,009 INFO L125 PetriNetUnfolderBase]: For 692447/692479 co-relation queries the response was YES. [2024-06-14 12:20:57,064 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. [2024-06-14 12:20:57,099 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 323 selfloop transitions, 26 changer transitions 0/375 dead transitions. [2024-06-14 12:20:57,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 375 transitions, 6242 flow [2024-06-14 12:20:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:20:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:20:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-14 12:20:57,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:20:57,101 INFO L175 Difference]: Start difference. First operand has 246 places, 367 transitions, 5518 flow. Second operand 6 states and 105 transitions. [2024-06-14 12:20:57,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 375 transitions, 6242 flow [2024-06-14 12:20:57,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 375 transitions, 5787 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-14 12:20:57,883 INFO L231 Difference]: Finished difference. Result has 246 places, 367 transitions, 5121 flow [2024-06-14 12:20:57,884 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} [2024-06-14 12:20:57,884 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 200 predicate places. [2024-06-14 12:20:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 367 transitions, 5121 flow [2024-06-14 12:20:57,885 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) [2024-06-14 12:20:57,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:20:57,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:20:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:20:57,885 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)] === [2024-06-14 12:20:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:20:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1744722161, now seen corresponding path program 1 times [2024-06-14 12:20:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:20:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912652103] [2024-06-14 12:20:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:20:57,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:20:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:20:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:20:58,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:20:58,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912652103] [2024-06-14 12:20:58,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912652103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:20:58,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:20:58,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:20:58,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8771547] [2024-06-14 12:20:58,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:20:58,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:20:58,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:20:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:20:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:20:58,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:20:58,900 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) [2024-06-14 12:20:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:20:58,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:20:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:00,095 INFO L124 PetriNetUnfolderBase]: 4096/6379 cut-off events. [2024-06-14 12:21:00,095 INFO L125 PetriNetUnfolderBase]: For 622569/622598 co-relation queries the response was YES. [2024-06-14 12:21:00,149 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. [2024-06-14 12:21:00,182 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 341 selfloop transitions, 17 changer transitions 0/385 dead transitions. [2024-06-14 12:21:00,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 385 transitions, 6097 flow [2024-06-14 12:21:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:21:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:21:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-14 12:21:00,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-14 12:21:00,183 INFO L175 Difference]: Start difference. First operand has 246 places, 367 transitions, 5121 flow. Second operand 6 states and 114 transitions. [2024-06-14 12:21:00,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 385 transitions, 6097 flow [2024-06-14 12:21:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 385 transitions, 6025 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:21:01,009 INFO L231 Difference]: Finished difference. Result has 247 places, 373 transitions, 5203 flow [2024-06-14 12:21:01,009 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} [2024-06-14 12:21:01,010 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 201 predicate places. [2024-06-14 12:21:01,010 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 373 transitions, 5203 flow [2024-06-14 12:21:01,010 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) [2024-06-14 12:21:01,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:01,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:01,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:21:01,011 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)] === [2024-06-14 12:21:01,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1753032641, now seen corresponding path program 2 times [2024-06-14 12:21:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:01,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229919737] [2024-06-14 12:21:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:01,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229919737] [2024-06-14 12:21:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229919737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:21:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932591458] [2024-06-14 12:21:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:21:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:21:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:21:02,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:21:02,063 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) [2024-06-14 12:21:02,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:02,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:21:02,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:03,275 INFO L124 PetriNetUnfolderBase]: 4093/6375 cut-off events. [2024-06-14 12:21:03,275 INFO L125 PetriNetUnfolderBase]: For 639972/640001 co-relation queries the response was YES. [2024-06-14 12:21:03,329 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. [2024-06-14 12:21:03,362 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 342 selfloop transitions, 12 changer transitions 0/381 dead transitions. [2024-06-14 12:21:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 381 transitions, 5937 flow [2024-06-14 12:21:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:21:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:21:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-14 12:21:03,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:21:03,363 INFO L175 Difference]: Start difference. First operand has 247 places, 373 transitions, 5203 flow. Second operand 6 states and 108 transitions. [2024-06-14 12:21:03,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 381 transitions, 5937 flow [2024-06-14 12:21:04,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 381 transitions, 5836 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-14 12:21:04,254 INFO L231 Difference]: Finished difference. Result has 251 places, 373 transitions, 5132 flow [2024-06-14 12:21:04,255 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} [2024-06-14 12:21:04,255 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 205 predicate places. [2024-06-14 12:21:04,255 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 373 transitions, 5132 flow [2024-06-14 12:21:04,255 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) [2024-06-14 12:21:04,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:04,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:21:04,256 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)] === [2024-06-14 12:21:04,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1659580586, now seen corresponding path program 1 times [2024-06-14 12:21:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790872043] [2024-06-14 12:21:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790872043] [2024-06-14 12:21:05,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790872043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:05,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:05,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859358302] [2024-06-14 12:21:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:06,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:06,077 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) [2024-06-14 12:21:06,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:06,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:06,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:07,572 INFO L124 PetriNetUnfolderBase]: 4333/6636 cut-off events. [2024-06-14 12:21:07,572 INFO L125 PetriNetUnfolderBase]: For 654198/654198 co-relation queries the response was YES. [2024-06-14 12:21:07,613 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. [2024-06-14 12:21:07,642 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 377 selfloop transitions, 23 changer transitions 0/406 dead transitions. [2024-06-14 12:21:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 406 transitions, 6136 flow [2024-06-14 12:21:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-14 12:21:07,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-14 12:21:07,643 INFO L175 Difference]: Start difference. First operand has 251 places, 373 transitions, 5132 flow. Second operand 10 states and 174 transitions. [2024-06-14 12:21:07,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 406 transitions, 6136 flow [2024-06-14 12:21:08,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 406 transitions, 6104 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:21:08,437 INFO L231 Difference]: Finished difference. Result has 256 places, 375 transitions, 5241 flow [2024-06-14 12:21:08,438 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} [2024-06-14 12:21:08,438 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 210 predicate places. [2024-06-14 12:21:08,438 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 375 transitions, 5241 flow [2024-06-14 12:21:08,438 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) [2024-06-14 12:21:08,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:08,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:08,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:21:08,439 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)] === [2024-06-14 12:21:08,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:08,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1710143521, now seen corresponding path program 1 times [2024-06-14 12:21:08,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:08,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696836667] [2024-06-14 12:21:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:08,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696836667] [2024-06-14 12:21:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696836667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:09,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:09,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:21:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948366225] [2024-06-14 12:21:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:09,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:21:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:21:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:21:09,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:09,661 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) [2024-06-14 12:21:09,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:09,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:09,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:11,222 INFO L124 PetriNetUnfolderBase]: 4281/6563 cut-off events. [2024-06-14 12:21:11,222 INFO L125 PetriNetUnfolderBase]: For 677892/677921 co-relation queries the response was YES. [2024-06-14 12:21:11,266 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. [2024-06-14 12:21:11,295 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 348 selfloop transitions, 15 changer transitions 0/388 dead transitions. [2024-06-14 12:21:11,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 388 transitions, 6035 flow [2024-06-14 12:21:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:21:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:21:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-14 12:21:11,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 12:21:11,296 INFO L175 Difference]: Start difference. First operand has 256 places, 375 transitions, 5241 flow. Second operand 7 states and 117 transitions. [2024-06-14 12:21:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 388 transitions, 6035 flow [2024-06-14 12:21:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 388 transitions, 5912 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:12,263 INFO L231 Difference]: Finished difference. Result has 255 places, 378 transitions, 5198 flow [2024-06-14 12:21:12,264 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} [2024-06-14 12:21:12,264 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 209 predicate places. [2024-06-14 12:21:12,264 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 378 transitions, 5198 flow [2024-06-14 12:21:12,264 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) [2024-06-14 12:21:12,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:12,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:12,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:21:12,265 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)] === [2024-06-14 12:21:12,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1937171178, now seen corresponding path program 1 times [2024-06-14 12:21:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:12,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809298458] [2024-06-14 12:21:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:13,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809298458] [2024-06-14 12:21:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809298458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:13,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:13,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828602655] [2024-06-14 12:21:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:13,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:13,676 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) [2024-06-14 12:21:13,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:13,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:13,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:15,159 INFO L124 PetriNetUnfolderBase]: 4247/6545 cut-off events. [2024-06-14 12:21:15,159 INFO L125 PetriNetUnfolderBase]: For 789325/789333 co-relation queries the response was YES. [2024-06-14 12:21:15,213 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. [2024-06-14 12:21:15,249 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 332 selfloop transitions, 79 changer transitions 0/418 dead transitions. [2024-06-14 12:21:15,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 418 transitions, 6234 flow [2024-06-14 12:21:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-14 12:21:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40444444444444444 [2024-06-14 12:21:15,251 INFO L175 Difference]: Start difference. First operand has 255 places, 378 transitions, 5198 flow. Second operand 10 states and 182 transitions. [2024-06-14 12:21:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 418 transitions, 6234 flow [2024-06-14 12:21:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 418 transitions, 6176 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:21:16,083 INFO L231 Difference]: Finished difference. Result has 260 places, 380 transitions, 5392 flow [2024-06-14 12:21:16,083 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} [2024-06-14 12:21:16,083 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 214 predicate places. [2024-06-14 12:21:16,083 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 380 transitions, 5392 flow [2024-06-14 12:21:16,084 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) [2024-06-14 12:21:16,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:16,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:16,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:21:16,084 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)] === [2024-06-14 12:21:16,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:16,084 INFO L85 PathProgramCache]: Analyzing trace with hash 363921096, now seen corresponding path program 2 times [2024-06-14 12:21:16,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:16,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319620763] [2024-06-14 12:21:16,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:16,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319620763] [2024-06-14 12:21:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319620763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:17,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049266590] [2024-06-14 12:21:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:17,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:17,584 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) [2024-06-14 12:21:17,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:17,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:17,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:19,017 INFO L124 PetriNetUnfolderBase]: 4250/6556 cut-off events. [2024-06-14 12:21:19,017 INFO L125 PetriNetUnfolderBase]: For 796461/796469 co-relation queries the response was YES. [2024-06-14 12:21:19,070 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. [2024-06-14 12:21:19,106 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 342 selfloop transitions, 73 changer transitions 0/422 dead transitions. [2024-06-14 12:21:19,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 422 transitions, 6527 flow [2024-06-14 12:21:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-14 12:21:19,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088888888888889 [2024-06-14 12:21:19,107 INFO L175 Difference]: Start difference. First operand has 260 places, 380 transitions, 5392 flow. Second operand 10 states and 184 transitions. [2024-06-14 12:21:19,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 422 transitions, 6527 flow [2024-06-14 12:21:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 422 transitions, 6219 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:20,084 INFO L231 Difference]: Finished difference. Result has 262 places, 384 transitions, 5422 flow [2024-06-14 12:21:20,084 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} [2024-06-14 12:21:20,085 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 216 predicate places. [2024-06-14 12:21:20,085 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 384 transitions, 5422 flow [2024-06-14 12:21:20,085 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) [2024-06-14 12:21:20,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:20,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:20,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:21:20,085 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)] === [2024-06-14 12:21:20,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash 421700136, now seen corresponding path program 3 times [2024-06-14 12:21:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:20,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400555524] [2024-06-14 12:21:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:20,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:21,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400555524] [2024-06-14 12:21:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400555524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:21,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:21,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714165031] [2024-06-14 12:21:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:21,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:21,586 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) [2024-06-14 12:21:21,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:21,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:23,075 INFO L124 PetriNetUnfolderBase]: 4273/6588 cut-off events. [2024-06-14 12:21:23,075 INFO L125 PetriNetUnfolderBase]: For 827703/827707 co-relation queries the response was YES. [2024-06-14 12:21:23,131 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. [2024-06-14 12:21:23,166 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 337 selfloop transitions, 79 changer transitions 0/423 dead transitions. [2024-06-14 12:21:23,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 423 transitions, 6478 flow [2024-06-14 12:21:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 12:21:23,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:21:23,168 INFO L175 Difference]: Start difference. First operand has 262 places, 384 transitions, 5422 flow. Second operand 10 states and 185 transitions. [2024-06-14 12:21:23,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 423 transitions, 6478 flow [2024-06-14 12:21:24,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 423 transitions, 6264 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:24,331 INFO L231 Difference]: Finished difference. Result has 264 places, 386 transitions, 5468 flow [2024-06-14 12:21:24,332 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} [2024-06-14 12:21:24,332 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 218 predicate places. [2024-06-14 12:21:24,332 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 386 transitions, 5468 flow [2024-06-14 12:21:24,333 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) [2024-06-14 12:21:24,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:24,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:24,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:21:24,333 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)] === [2024-06-14 12:21:24,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash 422147621, now seen corresponding path program 3 times [2024-06-14 12:21:24,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:24,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092740230] [2024-06-14 12:21:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:24,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:25,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:25,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092740230] [2024-06-14 12:21:25,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092740230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:25,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:25,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905699508] [2024-06-14 12:21:25,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:25,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:25,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:25,961 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) [2024-06-14 12:21:25,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:25,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:25,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:27,653 INFO L124 PetriNetUnfolderBase]: 4275/6607 cut-off events. [2024-06-14 12:21:27,653 INFO L125 PetriNetUnfolderBase]: For 843651/843655 co-relation queries the response was YES. [2024-06-14 12:21:27,700 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. [2024-06-14 12:21:27,731 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 333 selfloop transitions, 89 changer transitions 0/429 dead transitions. [2024-06-14 12:21:27,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 429 transitions, 6622 flow [2024-06-14 12:21:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-14 12:21:27,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-14 12:21:27,732 INFO L175 Difference]: Start difference. First operand has 264 places, 386 transitions, 5468 flow. Second operand 10 states and 186 transitions. [2024-06-14 12:21:27,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 429 transitions, 6622 flow [2024-06-14 12:21:28,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 429 transitions, 6386 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:28,684 INFO L231 Difference]: Finished difference. Result has 266 places, 392 transitions, 5614 flow [2024-06-14 12:21:28,684 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} [2024-06-14 12:21:28,685 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 220 predicate places. [2024-06-14 12:21:28,685 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 392 transitions, 5614 flow [2024-06-14 12:21:28,685 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) [2024-06-14 12:21:28,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:28,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:28,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:21:28,686 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)] === [2024-06-14 12:21:28,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash 422013546, now seen corresponding path program 4 times [2024-06-14 12:21:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850611359] [2024-06-14 12:21:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850611359] [2024-06-14 12:21:30,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850611359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:30,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:30,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458441969] [2024-06-14 12:21:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:30,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:30,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:30,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:30,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:30,196 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) [2024-06-14 12:21:30,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:30,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:30,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:31,902 INFO L124 PetriNetUnfolderBase]: 4292/6616 cut-off events. [2024-06-14 12:21:31,903 INFO L125 PetriNetUnfolderBase]: For 874314/874318 co-relation queries the response was YES. [2024-06-14 12:21:31,959 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. [2024-06-14 12:21:31,999 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 343 selfloop transitions, 81 changer transitions 0/431 dead transitions. [2024-06-14 12:21:31,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 431 transitions, 6688 flow [2024-06-14 12:21:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-14 12:21:32,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-14 12:21:32,001 INFO L175 Difference]: Start difference. First operand has 266 places, 392 transitions, 5614 flow. Second operand 10 states and 186 transitions. [2024-06-14 12:21:32,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 431 transitions, 6688 flow [2024-06-14 12:21:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 431 transitions, 6466 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:33,145 INFO L231 Difference]: Finished difference. Result has 269 places, 394 transitions, 5658 flow [2024-06-14 12:21:33,146 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} [2024-06-14 12:21:33,146 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 223 predicate places. [2024-06-14 12:21:33,146 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 394 transitions, 5658 flow [2024-06-14 12:21:33,146 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) [2024-06-14 12:21:33,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:33,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:21:33,147 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)] === [2024-06-14 12:21:33,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -459350269, now seen corresponding path program 1 times [2024-06-14 12:21:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926477273] [2024-06-14 12:21:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:34,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926477273] [2024-06-14 12:21:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926477273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:21:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819264525] [2024-06-14 12:21:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:21:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:21:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:21:34,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:34,265 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) [2024-06-14 12:21:34,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:34,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:34,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:35,862 INFO L124 PetriNetUnfolderBase]: 4526/6900 cut-off events. [2024-06-14 12:21:35,862 INFO L125 PetriNetUnfolderBase]: For 902010/902043 co-relation queries the response was YES. [2024-06-14 12:21:35,914 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. [2024-06-14 12:21:35,946 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 338 selfloop transitions, 69 changer transitions 0/438 dead transitions. [2024-06-14 12:21:35,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 438 transitions, 7113 flow [2024-06-14 12:21:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:21:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:21:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 12:21:35,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 12:21:35,947 INFO L175 Difference]: Start difference. First operand has 269 places, 394 transitions, 5658 flow. Second operand 8 states and 153 transitions. [2024-06-14 12:21:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 438 transitions, 7113 flow [2024-06-14 12:21:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 438 transitions, 6849 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:36,994 INFO L231 Difference]: Finished difference. Result has 271 places, 412 transitions, 5890 flow [2024-06-14 12:21:36,994 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} [2024-06-14 12:21:36,994 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 225 predicate places. [2024-06-14 12:21:36,995 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 412 transitions, 5890 flow [2024-06-14 12:21:36,995 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) [2024-06-14 12:21:36,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:36,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:36,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:21:36,995 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)] === [2024-06-14 12:21:36,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash 472512928, now seen corresponding path program 5 times [2024-06-14 12:21:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507767792] [2024-06-14 12:21:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507767792] [2024-06-14 12:21:38,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507767792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:38,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:38,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21358915] [2024-06-14 12:21:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:38,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:38,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:38,469 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) [2024-06-14 12:21:38,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:38,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:38,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:40,143 INFO L124 PetriNetUnfolderBase]: 4361/6729 cut-off events. [2024-06-14 12:21:40,143 INFO L125 PetriNetUnfolderBase]: For 921988/921996 co-relation queries the response was YES. [2024-06-14 12:21:40,194 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. [2024-06-14 12:21:40,226 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 365 selfloop transitions, 82 changer transitions 0/454 dead transitions. [2024-06-14 12:21:40,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 454 transitions, 7027 flow [2024-06-14 12:21:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 12:21:40,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:21:40,228 INFO L175 Difference]: Start difference. First operand has 271 places, 412 transitions, 5890 flow. Second operand 10 states and 185 transitions. [2024-06-14 12:21:40,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 454 transitions, 7027 flow [2024-06-14 12:21:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 454 transitions, 6968 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-14 12:21:41,132 INFO L231 Difference]: Finished difference. Result has 279 places, 418 transitions, 6141 flow [2024-06-14 12:21:41,132 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} [2024-06-14 12:21:41,132 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 233 predicate places. [2024-06-14 12:21:41,132 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 418 transitions, 6141 flow [2024-06-14 12:21:41,132 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) [2024-06-14 12:21:41,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:41,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:41,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:21:41,133 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)] === [2024-06-14 12:21:41,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1367754596, now seen corresponding path program 6 times [2024-06-14 12:21:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153213695] [2024-06-14 12:21:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:42,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:42,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153213695] [2024-06-14 12:21:42,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153213695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:42,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614250110] [2024-06-14 12:21:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:42,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:42,838 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) [2024-06-14 12:21:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:42,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:44,480 INFO L124 PetriNetUnfolderBase]: 4389/6765 cut-off events. [2024-06-14 12:21:44,481 INFO L125 PetriNetUnfolderBase]: For 952866/952874 co-relation queries the response was YES. [2024-06-14 12:21:44,534 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. [2024-06-14 12:21:44,568 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 362 selfloop transitions, 88 changer transitions 0/457 dead transitions. [2024-06-14 12:21:44,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 457 transitions, 7279 flow [2024-06-14 12:21:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-14 12:21:44,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-14 12:21:44,569 INFO L175 Difference]: Start difference. First operand has 279 places, 418 transitions, 6141 flow. Second operand 10 states and 186 transitions. [2024-06-14 12:21:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 457 transitions, 7279 flow [2024-06-14 12:21:45,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 457 transitions, 7061 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:45,699 INFO L231 Difference]: Finished difference. Result has 282 places, 422 transitions, 6227 flow [2024-06-14 12:21:45,699 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} [2024-06-14 12:21:45,699 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 236 predicate places. [2024-06-14 12:21:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 422 transitions, 6227 flow [2024-06-14 12:21:45,699 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) [2024-06-14 12:21:45,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:45,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:45,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:21:45,700 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)] === [2024-06-14 12:21:45,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2002392220, now seen corresponding path program 7 times [2024-06-14 12:21:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339617304] [2024-06-14 12:21:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339617304] [2024-06-14 12:21:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339617304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253219730] [2024-06-14 12:21:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:47,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:47,202 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) [2024-06-14 12:21:47,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:47,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:47,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:48,827 INFO L124 PetriNetUnfolderBase]: 4417/6807 cut-off events. [2024-06-14 12:21:48,827 INFO L125 PetriNetUnfolderBase]: For 981860/981868 co-relation queries the response was YES. [2024-06-14 12:21:48,882 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. [2024-06-14 12:21:48,917 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 362 selfloop transitions, 92 changer transitions 0/461 dead transitions. [2024-06-14 12:21:48,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 461 transitions, 7373 flow [2024-06-14 12:21:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 12:21:48,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-14 12:21:48,918 INFO L175 Difference]: Start difference. First operand has 282 places, 422 transitions, 6227 flow. Second operand 10 states and 187 transitions. [2024-06-14 12:21:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 461 transitions, 7373 flow [2024-06-14 12:21:50,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 461 transitions, 7141 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-14 12:21:50,051 INFO L231 Difference]: Finished difference. Result has 285 places, 426 transitions, 6309 flow [2024-06-14 12:21:50,052 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} [2024-06-14 12:21:50,052 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 239 predicate places. [2024-06-14 12:21:50,052 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 426 transitions, 6309 flow [2024-06-14 12:21:50,052 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) [2024-06-14 12:21:50,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:50,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:21:50,052 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)] === [2024-06-14 12:21:50,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 733505380, now seen corresponding path program 8 times [2024-06-14 12:21:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089365143] [2024-06-14 12:21:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:50,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:51,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:51,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089365143] [2024-06-14 12:21:51,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089365143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:51,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:51,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:51,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874706089] [2024-06-14 12:21:51,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:51,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:51,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:51,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:51,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:51,638 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) [2024-06-14 12:21:51,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:51,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:53,376 INFO L124 PetriNetUnfolderBase]: 4434/6844 cut-off events. [2024-06-14 12:21:53,376 INFO L125 PetriNetUnfolderBase]: For 1012188/1012196 co-relation queries the response was YES. [2024-06-14 12:21:53,434 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. [2024-06-14 12:21:53,469 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 353 selfloop transitions, 104 changer transitions 0/464 dead transitions. [2024-06-14 12:21:53,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 464 transitions, 7471 flow [2024-06-14 12:21:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 12:21:53,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2024-06-14 12:21:53,471 INFO L175 Difference]: Start difference. First operand has 285 places, 426 transitions, 6309 flow. Second operand 10 states and 188 transitions. [2024-06-14 12:21:53,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 464 transitions, 7471 flow [2024-06-14 12:21:54,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 464 transitions, 7197 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-14 12:21:54,672 INFO L231 Difference]: Finished difference. Result has 287 places, 428 transitions, 6362 flow [2024-06-14 12:21:54,672 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} [2024-06-14 12:21:54,672 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 241 predicate places. [2024-06-14 12:21:54,672 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 428 transitions, 6362 flow [2024-06-14 12:21:54,672 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) [2024-06-14 12:21:54,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:54,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:21:54,673 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)] === [2024-06-14 12:21:54,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1032413726, now seen corresponding path program 9 times [2024-06-14 12:21:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:54,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353213544] [2024-06-14 12:21:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:21:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:21:56,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:21:56,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353213544] [2024-06-14 12:21:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353213544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:21:56,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:21:56,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:21:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942236738] [2024-06-14 12:21:56,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:21:56,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:21:56,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:21:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:21:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:21:56,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:21:56,347 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) [2024-06-14 12:21:56,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:21:56,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:21:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:21:57,953 INFO L124 PetriNetUnfolderBase]: 4476/6910 cut-off events. [2024-06-14 12:21:57,953 INFO L125 PetriNetUnfolderBase]: For 1053027/1053035 co-relation queries the response was YES. [2024-06-14 12:21:58,010 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. [2024-06-14 12:21:58,044 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 354 selfloop transitions, 109 changer transitions 0/470 dead transitions. [2024-06-14 12:21:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 470 transitions, 7912 flow [2024-06-14 12:21:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:21:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:21:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 12:21:58,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-14 12:21:58,046 INFO L175 Difference]: Start difference. First operand has 287 places, 428 transitions, 6362 flow. Second operand 10 states and 190 transitions. [2024-06-14 12:21:58,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 470 transitions, 7912 flow [2024-06-14 12:21:59,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 470 transitions, 7661 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-14 12:21:59,154 INFO L231 Difference]: Finished difference. Result has 291 places, 432 transitions, 6564 flow [2024-06-14 12:21:59,154 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} [2024-06-14 12:21:59,155 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 245 predicate places. [2024-06-14 12:21:59,155 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 432 transitions, 6564 flow [2024-06-14 12:21:59,155 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) [2024-06-14 12:21:59,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:21:59,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:21:59,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:21:59,155 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)] === [2024-06-14 12:21:59,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:21:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 739011910, now seen corresponding path program 10 times [2024-06-14 12:21:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:21:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789466184] [2024-06-14 12:21:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:21:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:21:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789466184] [2024-06-14 12:22:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789466184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111416582] [2024-06-14 12:22:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:01,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:01,034 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) [2024-06-14 12:22:01,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:01,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:01,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:02,631 INFO L124 PetriNetUnfolderBase]: 4468/6893 cut-off events. [2024-06-14 12:22:02,631 INFO L125 PetriNetUnfolderBase]: For 1071171/1071179 co-relation queries the response was YES. [2024-06-14 12:22:02,690 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. [2024-06-14 12:22:02,725 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 351 selfloop transitions, 110 changer transitions 0/468 dead transitions. [2024-06-14 12:22:02,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 468 transitions, 7626 flow [2024-06-14 12:22:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:22:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:22:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 12:22:02,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-14 12:22:02,727 INFO L175 Difference]: Start difference. First operand has 291 places, 432 transitions, 6564 flow. Second operand 10 states and 187 transitions. [2024-06-14 12:22:02,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 468 transitions, 7626 flow [2024-06-14 12:22:04,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 468 transitions, 7289 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-14 12:22:04,104 INFO L231 Difference]: Finished difference. Result has 295 places, 432 transitions, 6454 flow [2024-06-14 12:22:04,104 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} [2024-06-14 12:22:04,105 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 249 predicate places. [2024-06-14 12:22:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 432 transitions, 6454 flow [2024-06-14 12:22:04,105 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) [2024-06-14 12:22:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:04,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:22:04,105 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)] === [2024-06-14 12:22:04,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 739227391, now seen corresponding path program 1 times [2024-06-14 12:22:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94297848] [2024-06-14 12:22:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:05,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94297848] [2024-06-14 12:22:05,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94297848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:05,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758096293] [2024-06-14 12:22:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:05,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:22:05,678 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) [2024-06-14 12:22:05,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:05,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:22:05,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:07,291 INFO L124 PetriNetUnfolderBase]: 4919/7389 cut-off events. [2024-06-14 12:22:07,291 INFO L125 PetriNetUnfolderBase]: For 1092946/1092954 co-relation queries the response was YES. [2024-06-14 12:22:07,353 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. [2024-06-14 12:22:07,388 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 332 selfloop transitions, 160 changer transitions 0/497 dead transitions. [2024-06-14 12:22:07,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 497 transitions, 7997 flow [2024-06-14 12:22:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:22:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:22:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-14 12:22:07,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:22:07,390 INFO L175 Difference]: Start difference. First operand has 295 places, 432 transitions, 6454 flow. Second operand 11 states and 198 transitions. [2024-06-14 12:22:07,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 497 transitions, 7997 flow [2024-06-14 12:22:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 497 transitions, 7686 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-14 12:22:08,945 INFO L231 Difference]: Finished difference. Result has 298 places, 455 transitions, 6922 flow [2024-06-14 12:22:08,946 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} [2024-06-14 12:22:08,946 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 252 predicate places. [2024-06-14 12:22:08,946 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 455 transitions, 6922 flow [2024-06-14 12:22:08,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:08,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:08,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:08,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:22:08,947 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)] === [2024-06-14 12:22:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 785282377, now seen corresponding path program 2 times [2024-06-14 12:22:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420532089] [2024-06-14 12:22:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420532089] [2024-06-14 12:22:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420532089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:22:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747424846] [2024-06-14 12:22:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:22:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:22:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:22:10,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:10,220 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) [2024-06-14 12:22:10,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:10,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:11,994 INFO L124 PetriNetUnfolderBase]: 4684/7148 cut-off events. [2024-06-14 12:22:11,994 INFO L125 PetriNetUnfolderBase]: For 1116179/1116212 co-relation queries the response was YES. [2024-06-14 12:22:12,063 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. [2024-06-14 12:22:12,102 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 376 selfloop transitions, 82 changer transitions 0/499 dead transitions. [2024-06-14 12:22:12,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 499 transitions, 8595 flow [2024-06-14 12:22:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:22:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:22:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 12:22:12,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:22:12,104 INFO L175 Difference]: Start difference. First operand has 298 places, 455 transitions, 6922 flow. Second operand 8 states and 156 transitions. [2024-06-14 12:22:12,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 499 transitions, 8595 flow [2024-06-14 12:22:13,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 499 transitions, 8386 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 12:22:13,449 INFO L231 Difference]: Finished difference. Result has 300 places, 471 transitions, 7129 flow [2024-06-14 12:22:13,449 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} [2024-06-14 12:22:13,449 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 254 predicate places. [2024-06-14 12:22:13,449 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 471 transitions, 7129 flow [2024-06-14 12:22:13,449 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) [2024-06-14 12:22:13,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:13,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:13,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:22:13,450 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)] === [2024-06-14 12:22:13,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1434978517, now seen corresponding path program 3 times [2024-06-14 12:22:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321280479] [2024-06-14 12:22:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321280479] [2024-06-14 12:22:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321280479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:14,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:14,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:22:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320083002] [2024-06-14 12:22:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:14,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:22:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:22:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:22:14,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:14,592 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) [2024-06-14 12:22:14,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:14,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:14,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:16,271 INFO L124 PetriNetUnfolderBase]: 4678/7143 cut-off events. [2024-06-14 12:22:16,272 INFO L125 PetriNetUnfolderBase]: For 1075663/1075691 co-relation queries the response was YES. [2024-06-14 12:22:16,334 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. [2024-06-14 12:22:16,373 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 365 selfloop transitions, 88 changer transitions 0/494 dead transitions. [2024-06-14 12:22:16,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 494 transitions, 8403 flow [2024-06-14 12:22:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:22:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:22:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 12:22:16,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:22:16,374 INFO L175 Difference]: Start difference. First operand has 300 places, 471 transitions, 7129 flow. Second operand 8 states and 150 transitions. [2024-06-14 12:22:16,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 494 transitions, 8403 flow [2024-06-14 12:22:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 494 transitions, 8232 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-14 12:22:17,738 INFO L231 Difference]: Finished difference. Result has 305 places, 471 transitions, 7142 flow [2024-06-14 12:22:17,738 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} [2024-06-14 12:22:17,739 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 259 predicate places. [2024-06-14 12:22:17,739 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 471 transitions, 7142 flow [2024-06-14 12:22:17,739 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) [2024-06-14 12:22:17,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:17,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:17,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:22:17,739 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)] === [2024-06-14 12:22:17,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1433595111, now seen corresponding path program 1 times [2024-06-14 12:22:17,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:17,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547192323] [2024-06-14 12:22:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:17,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547192323] [2024-06-14 12:22:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547192323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:22:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219303879] [2024-06-14 12:22:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:22:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:22:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:22:18,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:22:18,897 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) [2024-06-14 12:22:18,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:18,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:22:18,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:20,632 INFO L124 PetriNetUnfolderBase]: 4877/7346 cut-off events. [2024-06-14 12:22:20,632 INFO L125 PetriNetUnfolderBase]: For 1102077/1102101 co-relation queries the response was YES. [2024-06-14 12:22:20,700 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. [2024-06-14 12:22:20,737 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 423 selfloop transitions, 34 changer transitions 0/496 dead transitions. [2024-06-14 12:22:20,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 496 transitions, 8366 flow [2024-06-14 12:22:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:22:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:22:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-14 12:22:20,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-14 12:22:20,739 INFO L175 Difference]: Start difference. First operand has 305 places, 471 transitions, 7142 flow. Second operand 8 states and 137 transitions. [2024-06-14 12:22:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 496 transitions, 8366 flow [2024-06-14 12:22:22,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 496 transitions, 8184 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:22:22,471 INFO L231 Difference]: Finished difference. Result has 307 places, 477 transitions, 7144 flow [2024-06-14 12:22:22,471 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} [2024-06-14 12:22:22,471 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 261 predicate places. [2024-06-14 12:22:22,472 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 477 transitions, 7144 flow [2024-06-14 12:22:22,472 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) [2024-06-14 12:22:22,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:22,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:22,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:22:22,472 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)] === [2024-06-14 12:22:22,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash -912268004, now seen corresponding path program 11 times [2024-06-14 12:22:22,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:22,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769200042] [2024-06-14 12:22:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:22,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769200042] [2024-06-14 12:22:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769200042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:23,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721891537] [2024-06-14 12:22:23,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:23,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:23,960 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) [2024-06-14 12:22:23,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:23,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:23,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:25,714 INFO L124 PetriNetUnfolderBase]: 4580/7031 cut-off events. [2024-06-14 12:22:25,714 INFO L125 PetriNetUnfolderBase]: For 1155664/1155706 co-relation queries the response was YES. [2024-06-14 12:22:25,778 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. [2024-06-14 12:22:25,816 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 392 selfloop transitions, 110 changer transitions 0/512 dead transitions. [2024-06-14 12:22:25,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 512 transitions, 8380 flow [2024-06-14 12:22:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-14 12:22:25,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 12:22:25,817 INFO L175 Difference]: Start difference. First operand has 307 places, 477 transitions, 7144 flow. Second operand 9 states and 165 transitions. [2024-06-14 12:22:25,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 512 transitions, 8380 flow [2024-06-14 12:22:27,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 512 transitions, 8300 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-14 12:22:27,556 INFO L231 Difference]: Finished difference. Result has 312 places, 479 transitions, 7428 flow [2024-06-14 12:22:27,556 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} [2024-06-14 12:22:27,556 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 266 predicate places. [2024-06-14 12:22:27,556 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 479 transitions, 7428 flow [2024-06-14 12:22:27,557 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) [2024-06-14 12:22:27,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:27,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:27,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:22:27,557 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)] === [2024-06-14 12:22:27,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash -910394054, now seen corresponding path program 12 times [2024-06-14 12:22:27,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:27,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868063262] [2024-06-14 12:22:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:27,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868063262] [2024-06-14 12:22:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868063262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473634004] [2024-06-14 12:22:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:28,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:29,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:29,086 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) [2024-06-14 12:22:29,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:29,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:29,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:30,872 INFO L124 PetriNetUnfolderBase]: 4593/7060 cut-off events. [2024-06-14 12:22:30,872 INFO L125 PetriNetUnfolderBase]: For 1180893/1180931 co-relation queries the response was YES. [2024-06-14 12:22:30,942 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. [2024-06-14 12:22:30,982 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 388 selfloop transitions, 120 changer transitions 0/518 dead transitions. [2024-06-14 12:22:30,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 518 transitions, 9078 flow [2024-06-14 12:22:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 12:22:30,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-14 12:22:30,984 INFO L175 Difference]: Start difference. First operand has 312 places, 479 transitions, 7428 flow. Second operand 9 states and 170 transitions. [2024-06-14 12:22:30,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 518 transitions, 9078 flow [2024-06-14 12:22:32,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 518 transitions, 8726 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:32,733 INFO L231 Difference]: Finished difference. Result has 314 places, 483 transitions, 7580 flow [2024-06-14 12:22:32,734 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} [2024-06-14 12:22:32,734 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 268 predicate places. [2024-06-14 12:22:32,734 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 483 transitions, 7580 flow [2024-06-14 12:22:32,734 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) [2024-06-14 12:22:32,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:32,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:32,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:22:32,735 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)] === [2024-06-14 12:22:32,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash -910390334, now seen corresponding path program 13 times [2024-06-14 12:22:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:32,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578343065] [2024-06-14 12:22:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578343065] [2024-06-14 12:22:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578343065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:34,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447365287] [2024-06-14 12:22:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:34,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:34,319 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) [2024-06-14 12:22:34,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:34,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:34,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:36,127 INFO L124 PetriNetUnfolderBase]: 4585/7052 cut-off events. [2024-06-14 12:22:36,127 INFO L125 PetriNetUnfolderBase]: For 1110219/1110257 co-relation queries the response was YES. [2024-06-14 12:22:36,196 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. [2024-06-14 12:22:36,233 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 394 selfloop transitions, 112 changer transitions 0/516 dead transitions. [2024-06-14 12:22:36,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 516 transitions, 8720 flow [2024-06-14 12:22:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 12:22:36,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123456790123457 [2024-06-14 12:22:36,234 INFO L175 Difference]: Start difference. First operand has 314 places, 483 transitions, 7580 flow. Second operand 9 states and 167 transitions. [2024-06-14 12:22:36,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 516 transitions, 8720 flow [2024-06-14 12:22:38,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 516 transitions, 8420 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-14 12:22:38,106 INFO L231 Difference]: Finished difference. Result has 318 places, 483 transitions, 7524 flow [2024-06-14 12:22:38,106 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} [2024-06-14 12:22:38,106 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 272 predicate places. [2024-06-14 12:22:38,106 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 483 transitions, 7524 flow [2024-06-14 12:22:38,107 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) [2024-06-14 12:22:38,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:38,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:38,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:22:38,107 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)] === [2024-06-14 12:22:38,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:38,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2064532825, now seen corresponding path program 4 times [2024-06-14 12:22:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:38,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091339205] [2024-06-14 12:22:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:38,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091339205] [2024-06-14 12:22:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091339205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:39,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277531886] [2024-06-14 12:22:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:39,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:39,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:39,538 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) [2024-06-14 12:22:39,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:39,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:39,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:41,275 INFO L124 PetriNetUnfolderBase]: 4580/7061 cut-off events. [2024-06-14 12:22:41,275 INFO L125 PetriNetUnfolderBase]: For 1120314/1120352 co-relation queries the response was YES. [2024-06-14 12:22:41,347 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. [2024-06-14 12:22:41,385 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 369 selfloop transitions, 140 changer transitions 0/519 dead transitions. [2024-06-14 12:22:41,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 519 transitions, 8794 flow [2024-06-14 12:22:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 12:22:41,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-14 12:22:41,387 INFO L175 Difference]: Start difference. First operand has 318 places, 483 transitions, 7524 flow. Second operand 9 states and 168 transitions. [2024-06-14 12:22:41,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 519 transitions, 8794 flow [2024-06-14 12:22:42,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 519 transitions, 8552 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:43,000 INFO L231 Difference]: Finished difference. Result has 319 places, 486 transitions, 7736 flow [2024-06-14 12:22:43,001 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} [2024-06-14 12:22:43,001 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 273 predicate places. [2024-06-14 12:22:43,001 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 486 transitions, 7736 flow [2024-06-14 12:22:43,001 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) [2024-06-14 12:22:43,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:43,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:22:43,002 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)] === [2024-06-14 12:22:43,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1392776920, now seen corresponding path program 14 times [2024-06-14 12:22:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:43,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035949435] [2024-06-14 12:22:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:44,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035949435] [2024-06-14 12:22:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035949435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309317613] [2024-06-14 12:22:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:44,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:44,577 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) [2024-06-14 12:22:44,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:44,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:46,379 INFO L124 PetriNetUnfolderBase]: 4599/7064 cut-off events. [2024-06-14 12:22:46,379 INFO L125 PetriNetUnfolderBase]: For 1158315/1158362 co-relation queries the response was YES. [2024-06-14 12:22:46,451 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. [2024-06-14 12:22:46,492 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 378 selfloop transitions, 132 changer transitions 0/520 dead transitions. [2024-06-14 12:22:46,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 520 transitions, 8992 flow [2024-06-14 12:22:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 12:22:46,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-14 12:22:46,494 INFO L175 Difference]: Start difference. First operand has 319 places, 486 transitions, 7736 flow. Second operand 9 states and 168 transitions. [2024-06-14 12:22:46,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 520 transitions, 8992 flow [2024-06-14 12:22:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 520 transitions, 8666 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:48,348 INFO L231 Difference]: Finished difference. Result has 321 places, 488 transitions, 7796 flow [2024-06-14 12:22:48,349 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} [2024-06-14 12:22:48,349 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 275 predicate places. [2024-06-14 12:22:48,349 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 488 transitions, 7796 flow [2024-06-14 12:22:48,349 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) [2024-06-14 12:22:48,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:48,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:22:48,350 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)] === [2024-06-14 12:22:48,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1392992401, now seen corresponding path program 2 times [2024-06-14 12:22:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43324727] [2024-06-14 12:22:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43324727] [2024-06-14 12:22:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43324727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:49,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337806354] [2024-06-14 12:22:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:49,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:50,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:22:50,078 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) [2024-06-14 12:22:50,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:50,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:22:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:52,156 INFO L124 PetriNetUnfolderBase]: 5059/7580 cut-off events. [2024-06-14 12:22:52,156 INFO L125 PetriNetUnfolderBase]: For 1135897/1135901 co-relation queries the response was YES. [2024-06-14 12:22:52,218 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. [2024-06-14 12:22:52,252 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 476 selfloop transitions, 46 changer transitions 0/529 dead transitions. [2024-06-14 12:22:52,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 529 transitions, 9125 flow [2024-06-14 12:22:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:22:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:22:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-14 12:22:52,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-14 12:22:52,254 INFO L175 Difference]: Start difference. First operand has 321 places, 488 transitions, 7796 flow. Second operand 10 states and 168 transitions. [2024-06-14 12:22:52,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 529 transitions, 9125 flow [2024-06-14 12:22:53,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 529 transitions, 8760 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-14 12:22:53,636 INFO L231 Difference]: Finished difference. Result has 324 places, 497 transitions, 7716 flow [2024-06-14 12:22:53,637 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} [2024-06-14 12:22:53,637 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 278 predicate places. [2024-06-14 12:22:53,637 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 497 transitions, 7716 flow [2024-06-14 12:22:53,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:22:53,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:53,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:53,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:22:53,637 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)] === [2024-06-14 12:22:53,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1544639550, now seen corresponding path program 15 times [2024-06-14 12:22:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136788810] [2024-06-14 12:22:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:22:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:22:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:22:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136788810] [2024-06-14 12:22:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136788810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:22:55,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:22:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:22:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109289700] [2024-06-14 12:22:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:22:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:22:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:22:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:22:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:22:55,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:22:55,412 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) [2024-06-14 12:22:55,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:22:55,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:22:55,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:22:57,379 INFO L124 PetriNetUnfolderBase]: 4663/7152 cut-off events. [2024-06-14 12:22:57,379 INFO L125 PetriNetUnfolderBase]: For 1128208/1128221 co-relation queries the response was YES. [2024-06-14 12:22:57,446 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. [2024-06-14 12:22:57,486 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 395 selfloop transitions, 124 changer transitions 0/531 dead transitions. [2024-06-14 12:22:57,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 531 transitions, 8994 flow [2024-06-14 12:22:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:22:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:22:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 12:22:57,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-14 12:22:57,487 INFO L175 Difference]: Start difference. First operand has 324 places, 497 transitions, 7716 flow. Second operand 9 states and 169 transitions. [2024-06-14 12:22:57,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 531 transitions, 8994 flow [2024-06-14 12:22:58,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 531 transitions, 8846 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-14 12:22:58,994 INFO L231 Difference]: Finished difference. Result has 326 places, 499 transitions, 7942 flow [2024-06-14 12:22:58,994 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} [2024-06-14 12:22:58,994 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2024-06-14 12:22:58,994 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 499 transitions, 7942 flow [2024-06-14 12:22:58,994 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) [2024-06-14 12:22:58,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:22:58,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:22:58,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:22:58,995 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)] === [2024-06-14 12:22:58,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:22:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1404157942, now seen corresponding path program 16 times [2024-06-14 12:22:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:22:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662739240] [2024-06-14 12:22:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:22:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:22:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662739240] [2024-06-14 12:23:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662739240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:00,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:00,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:00,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607052235] [2024-06-14 12:23:00,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:00,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:00,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:00,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:00,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:23:00,581 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) [2024-06-14 12:23:00,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:00,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:23:00,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:02,360 INFO L124 PetriNetUnfolderBase]: 4697/7201 cut-off events. [2024-06-14 12:23:02,360 INFO L125 PetriNetUnfolderBase]: For 1164046/1164059 co-relation queries the response was YES. [2024-06-14 12:23:02,436 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. [2024-06-14 12:23:02,474 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 387 selfloop transitions, 134 changer transitions 0/533 dead transitions. [2024-06-14 12:23:02,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 533 transitions, 9224 flow [2024-06-14 12:23:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:23:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:23:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 12:23:02,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-14 12:23:02,476 INFO L175 Difference]: Start difference. First operand has 326 places, 499 transitions, 7942 flow. Second operand 9 states and 169 transitions. [2024-06-14 12:23:02,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 533 transitions, 9224 flow [2024-06-14 12:23:04,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 533 transitions, 8870 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-14 12:23:04,222 INFO L231 Difference]: Finished difference. Result has 328 places, 501 transitions, 7986 flow [2024-06-14 12:23:04,222 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} [2024-06-14 12:23:04,222 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 282 predicate places. [2024-06-14 12:23:04,222 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 501 transitions, 7986 flow [2024-06-14 12:23:04,222 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) [2024-06-14 12:23:04,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:04,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:23:04,223 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)] === [2024-06-14 12:23:04,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash -651711659, now seen corresponding path program 4 times [2024-06-14 12:23:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123814530] [2024-06-14 12:23:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123814530] [2024-06-14 12:23:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123814530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:23:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552760208] [2024-06-14 12:23:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:23:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:23:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:23:05,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:23:05,407 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) [2024-06-14 12:23:05,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:05,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:23:05,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:07,309 INFO L124 PetriNetUnfolderBase]: 4805/7333 cut-off events. [2024-06-14 12:23:07,309 INFO L125 PetriNetUnfolderBase]: For 1167714/1167740 co-relation queries the response was YES. [2024-06-14 12:23:07,384 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. [2024-06-14 12:23:07,423 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 386 selfloop transitions, 93 changer transitions 0/528 dead transitions. [2024-06-14 12:23:07,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 528 transitions, 9258 flow [2024-06-14 12:23:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:23:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:23:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-14 12:23:07,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2024-06-14 12:23:07,424 INFO L175 Difference]: Start difference. First operand has 328 places, 501 transitions, 7986 flow. Second operand 7 states and 134 transitions. [2024-06-14 12:23:07,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 528 transitions, 9258 flow [2024-06-14 12:23:09,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 528 transitions, 8846 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:09,073 INFO L231 Difference]: Finished difference. Result has 326 places, 506 transitions, 7881 flow [2024-06-14 12:23:09,074 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} [2024-06-14 12:23:09,074 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2024-06-14 12:23:09,074 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 506 transitions, 7881 flow [2024-06-14 12:23:09,074 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) [2024-06-14 12:23:09,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:09,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:09,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:23:09,074 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)] === [2024-06-14 12:23:09,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash -251856299, now seen corresponding path program 5 times [2024-06-14 12:23:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403322760] [2024-06-14 12:23:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403322760] [2024-06-14 12:23:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403322760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:10,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:10,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:23:10,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623875306] [2024-06-14 12:23:10,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:10,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:23:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:10,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:23:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:23:10,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:23:10,291 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) [2024-06-14 12:23:10,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:10,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:23:10,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:12,140 INFO L124 PetriNetUnfolderBase]: 4811/7335 cut-off events. [2024-06-14 12:23:12,140 INFO L125 PetriNetUnfolderBase]: For 1149520/1149548 co-relation queries the response was YES. [2024-06-14 12:23:12,217 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. [2024-06-14 12:23:12,255 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 384 selfloop transitions, 96 changer transitions 0/529 dead transitions. [2024-06-14 12:23:12,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 529 transitions, 9152 flow [2024-06-14 12:23:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:23:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:23:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 12:23:12,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-14 12:23:12,256 INFO L175 Difference]: Start difference. First operand has 326 places, 506 transitions, 7881 flow. Second operand 7 states and 130 transitions. [2024-06-14 12:23:12,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 529 transitions, 9152 flow [2024-06-14 12:23:13,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 529 transitions, 8949 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-14 12:23:13,899 INFO L231 Difference]: Finished difference. Result has 327 places, 511 transitions, 7981 flow [2024-06-14 12:23:13,899 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} [2024-06-14 12:23:13,899 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 281 predicate places. [2024-06-14 12:23:13,899 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 511 transitions, 7981 flow [2024-06-14 12:23:13,899 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) [2024-06-14 12:23:13,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:13,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:23:13,900 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)] === [2024-06-14 12:23:13,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2013872669, now seen corresponding path program 2 times [2024-06-14 12:23:13,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675681974] [2024-06-14 12:23:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:15,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675681974] [2024-06-14 12:23:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675681974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:15,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:15,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:23:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588956431] [2024-06-14 12:23:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:15,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:23:15,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:23:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:23:15,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:15,105 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) [2024-06-14 12:23:15,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:15,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:15,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:16,926 INFO L124 PetriNetUnfolderBase]: 4960/7488 cut-off events. [2024-06-14 12:23:16,927 INFO L125 PetriNetUnfolderBase]: For 1119620/1119644 co-relation queries the response was YES. [2024-06-14 12:23:16,996 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. [2024-06-14 12:23:17,033 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 447 selfloop transitions, 37 changer transitions 0/529 dead transitions. [2024-06-14 12:23:17,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 529 transitions, 9193 flow [2024-06-14 12:23:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:23:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:23:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-14 12:23:17,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38412698412698415 [2024-06-14 12:23:17,034 INFO L175 Difference]: Start difference. First operand has 327 places, 511 transitions, 7981 flow. Second operand 7 states and 121 transitions. [2024-06-14 12:23:17,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 529 transitions, 9193 flow [2024-06-14 12:23:18,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 529 transitions, 9007 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-14 12:23:18,603 INFO L231 Difference]: Finished difference. Result has 329 places, 514 transitions, 7929 flow [2024-06-14 12:23:18,603 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} [2024-06-14 12:23:18,603 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 283 predicate places. [2024-06-14 12:23:18,603 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 514 transitions, 7929 flow [2024-06-14 12:23:18,604 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) [2024-06-14 12:23:18,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:18,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:18,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:23:18,604 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)] === [2024-06-14 12:23:18,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -92946369, now seen corresponding path program 3 times [2024-06-14 12:23:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271202105] [2024-06-14 12:23:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271202105] [2024-06-14 12:23:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271202105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:20,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:20,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117155527] [2024-06-14 12:23:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:20,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:20,408 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) [2024-06-14 12:23:20,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:20,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:20,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:22,139 INFO L124 PetriNetUnfolderBase]: 5105/7669 cut-off events. [2024-06-14 12:23:22,140 INFO L125 PetriNetUnfolderBase]: For 1130263/1130275 co-relation queries the response was YES. [2024-06-14 12:23:22,220 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. [2024-06-14 12:23:22,262 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 471 selfloop transitions, 78 changer transitions 0/557 dead transitions. [2024-06-14 12:23:22,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 557 transitions, 9335 flow [2024-06-14 12:23:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:23:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:23:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-14 12:23:22,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-14 12:23:22,263 INFO L175 Difference]: Start difference. First operand has 329 places, 514 transitions, 7929 flow. Second operand 10 states and 170 transitions. [2024-06-14 12:23:22,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 557 transitions, 9335 flow [2024-06-14 12:23:24,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 557 transitions, 9246 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 12:23:24,147 INFO L231 Difference]: Finished difference. Result has 335 places, 527 transitions, 8222 flow [2024-06-14 12:23:24,148 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} [2024-06-14 12:23:24,148 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 289 predicate places. [2024-06-14 12:23:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 527 transitions, 8222 flow [2024-06-14 12:23:24,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:23:24,149 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)] === [2024-06-14 12:23:24,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:24,149 INFO L85 PathProgramCache]: Analyzing trace with hash -351225039, now seen corresponding path program 4 times [2024-06-14 12:23:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040193197] [2024-06-14 12:23:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040193197] [2024-06-14 12:23:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040193197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046757494] [2024-06-14 12:23:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:25,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:25,823 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) [2024-06-14 12:23:25,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:25,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:27,655 INFO L124 PetriNetUnfolderBase]: 5116/7680 cut-off events. [2024-06-14 12:23:27,655 INFO L125 PetriNetUnfolderBase]: For 1134693/1134711 co-relation queries the response was YES. [2024-06-14 12:23:27,730 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. [2024-06-14 12:23:27,769 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 285 selfloop transitions, 305 changer transitions 0/598 dead transitions. [2024-06-14 12:23:27,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 598 transitions, 10179 flow [2024-06-14 12:23:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:23:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:23:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 12:23:27,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:23:27,771 INFO L175 Difference]: Start difference. First operand has 335 places, 527 transitions, 8222 flow. Second operand 10 states and 185 transitions. [2024-06-14 12:23:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 598 transitions, 10179 flow [2024-06-14 12:23:29,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 598 transitions, 10005 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-14 12:23:29,310 INFO L231 Difference]: Finished difference. Result has 341 places, 561 transitions, 9109 flow [2024-06-14 12:23:29,311 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} [2024-06-14 12:23:29,311 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 295 predicate places. [2024-06-14 12:23:29,311 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 561 transitions, 9109 flow [2024-06-14 12:23:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:29,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:29,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:29,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:23:29,311 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)] === [2024-06-14 12:23:29,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash -769841905, now seen corresponding path program 5 times [2024-06-14 12:23:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647000706] [2024-06-14 12:23:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:30,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647000706] [2024-06-14 12:23:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647000706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644907134] [2024-06-14 12:23:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:30,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:30,957 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) [2024-06-14 12:23:30,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:30,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:30,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:33,084 INFO L124 PetriNetUnfolderBase]: 5149/7727 cut-off events. [2024-06-14 12:23:33,084 INFO L125 PetriNetUnfolderBase]: For 1170725/1170743 co-relation queries the response was YES. [2024-06-14 12:23:33,152 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. [2024-06-14 12:23:33,188 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 320 selfloop transitions, 277 changer transitions 0/605 dead transitions. [2024-06-14 12:23:33,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 605 transitions, 10606 flow [2024-06-14 12:23:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:23:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:23:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 12:23:33,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 12:23:33,189 INFO L175 Difference]: Start difference. First operand has 341 places, 561 transitions, 9109 flow. Second operand 10 states and 185 transitions. [2024-06-14 12:23:33,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 605 transitions, 10606 flow [2024-06-14 12:23:35,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 605 transitions, 10333 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-14 12:23:35,157 INFO L231 Difference]: Finished difference. Result has 348 places, 569 transitions, 9571 flow [2024-06-14 12:23:35,157 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} [2024-06-14 12:23:35,157 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 302 predicate places. [2024-06-14 12:23:35,157 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 569 transitions, 9571 flow [2024-06-14 12:23:35,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:35,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:35,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:35,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:23:35,158 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)] === [2024-06-14 12:23:35,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:35,158 INFO L85 PathProgramCache]: Analyzing trace with hash 827475196, now seen corresponding path program 17 times [2024-06-14 12:23:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:35,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941931795] [2024-06-14 12:23:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:35,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941931795] [2024-06-14 12:23:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941931795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:36,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:36,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924288374] [2024-06-14 12:23:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:36,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:36,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:36,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:23:36,795 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) [2024-06-14 12:23:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:23:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:38,818 INFO L124 PetriNetUnfolderBase]: 4858/7428 cut-off events. [2024-06-14 12:23:38,818 INFO L125 PetriNetUnfolderBase]: For 1188838/1188866 co-relation queries the response was YES. [2024-06-14 12:23:38,892 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. [2024-06-14 12:23:38,933 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 434 selfloop transitions, 150 changer transitions 0/601 dead transitions. [2024-06-14 12:23:38,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 601 transitions, 10977 flow [2024-06-14 12:23:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:23:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:23:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 12:23:38,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-14 12:23:38,935 INFO L175 Difference]: Start difference. First operand has 348 places, 569 transitions, 9571 flow. Second operand 9 states and 168 transitions. [2024-06-14 12:23:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 601 transitions, 10977 flow [2024-06-14 12:23:40,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 601 transitions, 10490 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-14 12:23:40,905 INFO L231 Difference]: Finished difference. Result has 352 places, 571 transitions, 9511 flow [2024-06-14 12:23:40,905 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} [2024-06-14 12:23:40,906 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 306 predicate places. [2024-06-14 12:23:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 571 transitions, 9511 flow [2024-06-14 12:23:40,906 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) [2024-06-14 12:23:40,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:40,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:40,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:23:40,906 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)] === [2024-06-14 12:23:40,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash -891247675, now seen corresponding path program 6 times [2024-06-14 12:23:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:40,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356289321] [2024-06-14 12:23:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356289321] [2024-06-14 12:23:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356289321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:42,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:42,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803789078] [2024-06-14 12:23:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:42,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:42,610 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) [2024-06-14 12:23:42,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:42,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:44,527 INFO L124 PetriNetUnfolderBase]: 5145/7723 cut-off events. [2024-06-14 12:23:44,527 INFO L125 PetriNetUnfolderBase]: For 1216860/1216878 co-relation queries the response was YES. [2024-06-14 12:23:44,603 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. [2024-06-14 12:23:44,640 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 341 selfloop transitions, 260 changer transitions 0/609 dead transitions. [2024-06-14 12:23:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 609 transitions, 10896 flow [2024-06-14 12:23:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:23:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:23:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-14 12:23:44,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-14 12:23:44,642 INFO L175 Difference]: Start difference. First operand has 352 places, 571 transitions, 9511 flow. Second operand 10 states and 186 transitions. [2024-06-14 12:23:44,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 609 transitions, 10896 flow [2024-06-14 12:23:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 609 transitions, 10413 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-14 12:23:46,863 INFO L231 Difference]: Finished difference. Result has 356 places, 573 transitions, 9601 flow [2024-06-14 12:23:46,863 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} [2024-06-14 12:23:46,864 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 310 predicate places. [2024-06-14 12:23:46,864 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 573 transitions, 9601 flow [2024-06-14 12:23:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:46,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:46,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:23:46,864 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)] === [2024-06-14 12:23:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash 633751267, now seen corresponding path program 7 times [2024-06-14 12:23:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987363668] [2024-06-14 12:23:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987363668] [2024-06-14 12:23:48,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987363668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:48,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067244332] [2024-06-14 12:23:48,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:48,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:48,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:48,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:23:48,511 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) [2024-06-14 12:23:48,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:48,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:23:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:50,503 INFO L124 PetriNetUnfolderBase]: 5124/7692 cut-off events. [2024-06-14 12:23:50,504 INFO L125 PetriNetUnfolderBase]: For 1227138/1227156 co-relation queries the response was YES. [2024-06-14 12:23:50,577 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. [2024-06-14 12:23:50,614 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 353 selfloop transitions, 249 changer transitions 0/610 dead transitions. [2024-06-14 12:23:50,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 610 transitions, 10974 flow [2024-06-14 12:23:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:23:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:23:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 12:23:50,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-06-14 12:23:50,615 INFO L175 Difference]: Start difference. First operand has 356 places, 573 transitions, 9601 flow. Second operand 10 states and 187 transitions. [2024-06-14 12:23:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 610 transitions, 10974 flow [2024-06-14 12:23:52,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 610 transitions, 10487 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-14 12:23:52,697 INFO L231 Difference]: Finished difference. Result has 360 places, 574 transitions, 9653 flow [2024-06-14 12:23:52,697 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} [2024-06-14 12:23:52,697 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 314 predicate places. [2024-06-14 12:23:52,697 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 574 transitions, 9653 flow [2024-06-14 12:23:52,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:23:52,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:52,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:52,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:23:52,698 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)] === [2024-06-14 12:23:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1166139812, now seen corresponding path program 18 times [2024-06-14 12:23:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338412162] [2024-06-14 12:23:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338412162] [2024-06-14 12:23:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338412162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:54,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:54,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653994811] [2024-06-14 12:23:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:54,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:23:54,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:23:54,351 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) [2024-06-14 12:23:54,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:23:54,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:23:54,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:23:56,206 INFO L124 PetriNetUnfolderBase]: 4841/7406 cut-off events. [2024-06-14 12:23:56,206 INFO L125 PetriNetUnfolderBase]: For 1244275/1244298 co-relation queries the response was YES. [2024-06-14 12:23:56,284 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. [2024-06-14 12:23:56,324 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 449 selfloop transitions, 138 changer transitions 0/607 dead transitions. [2024-06-14 12:23:56,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 607 transitions, 11075 flow [2024-06-14 12:23:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:23:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:23:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 12:23:56,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-14 12:23:56,325 INFO L175 Difference]: Start difference. First operand has 360 places, 574 transitions, 9653 flow. Second operand 9 states and 171 transitions. [2024-06-14 12:23:56,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 607 transitions, 11075 flow [2024-06-14 12:23:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 607 transitions, 10647 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:23:58,530 INFO L231 Difference]: Finished difference. Result has 360 places, 576 transitions, 9632 flow [2024-06-14 12:23:58,530 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} [2024-06-14 12:23:58,531 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 314 predicate places. [2024-06-14 12:23:58,531 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 576 transitions, 9632 flow [2024-06-14 12:23:58,531 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) [2024-06-14 12:23:58,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:23:58,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:23:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:23:58,531 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)] === [2024-06-14 12:23:58,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:23:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash 628029256, now seen corresponding path program 19 times [2024-06-14 12:23:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:23:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169007781] [2024-06-14 12:23:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:23:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:23:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:23:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:23:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:23:59,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169007781] [2024-06-14 12:23:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169007781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:23:59,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:23:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:23:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166171577] [2024-06-14 12:23:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:23:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:23:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:23:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:23:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:24:00,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:00,134 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) [2024-06-14 12:24:00,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:00,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:02,067 INFO L124 PetriNetUnfolderBase]: 4858/7433 cut-off events. [2024-06-14 12:24:02,067 INFO L125 PetriNetUnfolderBase]: For 1280233/1280256 co-relation queries the response was YES. [2024-06-14 12:24:02,144 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. [2024-06-14 12:24:02,183 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 449 selfloop transitions, 139 changer transitions 0/608 dead transitions. [2024-06-14 12:24:02,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 608 transitions, 11054 flow [2024-06-14 12:24:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:24:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:24:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 12:24:02,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-14 12:24:02,184 INFO L175 Difference]: Start difference. First operand has 360 places, 576 transitions, 9632 flow. Second operand 9 states and 169 transitions. [2024-06-14 12:24:02,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 608 transitions, 11054 flow [2024-06-14 12:24:04,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 608 transitions, 10665 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-14 12:24:04,263 INFO L231 Difference]: Finished difference. Result has 362 places, 578 transitions, 9656 flow [2024-06-14 12:24:04,263 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} [2024-06-14 12:24:04,263 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 316 predicate places. [2024-06-14 12:24:04,263 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 578 transitions, 9656 flow [2024-06-14 12:24:04,263 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) [2024-06-14 12:24:04,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:04,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:24:04,264 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)] === [2024-06-14 12:24:04,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash 628025536, now seen corresponding path program 20 times [2024-06-14 12:24:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:04,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678461140] [2024-06-14 12:24:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:05,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678461140] [2024-06-14 12:24:05,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678461140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:05,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:05,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:24:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764342140] [2024-06-14 12:24:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:05,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:24:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:24:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:24:05,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:05,871 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) [2024-06-14 12:24:05,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:05,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:07,698 INFO L124 PetriNetUnfolderBase]: 4850/7421 cut-off events. [2024-06-14 12:24:07,698 INFO L125 PetriNetUnfolderBase]: For 1295498/1295521 co-relation queries the response was YES. [2024-06-14 12:24:07,774 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. [2024-06-14 12:24:07,811 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 444 selfloop transitions, 146 changer transitions 0/610 dead transitions. [2024-06-14 12:24:07,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 610 transitions, 11082 flow [2024-06-14 12:24:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:24:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:24:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 12:24:07,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41728395061728396 [2024-06-14 12:24:07,812 INFO L175 Difference]: Start difference. First operand has 362 places, 578 transitions, 9656 flow. Second operand 9 states and 169 transitions. [2024-06-14 12:24:07,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 610 transitions, 11082 flow [2024-06-14 12:24:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 610 transitions, 10687 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-14 12:24:09,876 INFO L231 Difference]: Finished difference. Result has 364 places, 580 transitions, 9692 flow [2024-06-14 12:24:09,877 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} [2024-06-14 12:24:09,877 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 318 predicate places. [2024-06-14 12:24:09,877 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 580 transitions, 9692 flow [2024-06-14 12:24:09,878 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) [2024-06-14 12:24:09,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:09,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:24:09,878 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)] === [2024-06-14 12:24:09,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1810222187, now seen corresponding path program 3 times [2024-06-14 12:24:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358984213] [2024-06-14 12:24:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358984213] [2024-06-14 12:24:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358984213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:10,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:24:10,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871008317] [2024-06-14 12:24:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:10,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:24:10,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:24:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:24:11,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:24:11,055 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) [2024-06-14 12:24:11,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:11,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:24:11,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:13,078 INFO L124 PetriNetUnfolderBase]: 5022/7588 cut-off events. [2024-06-14 12:24:13,078 INFO L125 PetriNetUnfolderBase]: For 1314652/1314684 co-relation queries the response was YES. [2024-06-14 12:24:13,160 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. [2024-06-14 12:24:13,199 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 506 selfloop transitions, 38 changer transitions 0/593 dead transitions. [2024-06-14 12:24:13,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 593 transitions, 11023 flow [2024-06-14 12:24:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-14 12:24:13,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-14 12:24:13,200 INFO L175 Difference]: Start difference. First operand has 364 places, 580 transitions, 9692 flow. Second operand 7 states and 115 transitions. [2024-06-14 12:24:13,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 593 transitions, 11023 flow [2024-06-14 12:24:15,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 593 transitions, 10610 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-14 12:24:15,461 INFO L231 Difference]: Finished difference. Result has 364 places, 583 transitions, 9412 flow [2024-06-14 12:24:15,461 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} [2024-06-14 12:24:15,462 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 318 predicate places. [2024-06-14 12:24:15,462 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 583 transitions, 9412 flow [2024-06-14 12:24:15,462 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) [2024-06-14 12:24:15,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:15,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:15,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:24:15,462 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)] === [2024-06-14 12:24:15,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:15,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1810222621, now seen corresponding path program 6 times [2024-06-14 12:24:15,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:15,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959075737] [2024-06-14 12:24:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:15,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959075737] [2024-06-14 12:24:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959075737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:16,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:24:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012535911] [2024-06-14 12:24:16,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:24:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:24:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:24:16,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:16,682 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) [2024-06-14 12:24:16,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:16,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:18,631 INFO L124 PetriNetUnfolderBase]: 4840/7404 cut-off events. [2024-06-14 12:24:18,631 INFO L125 PetriNetUnfolderBase]: For 1330367/1330405 co-relation queries the response was YES. [2024-06-14 12:24:18,709 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. [2024-06-14 12:24:18,746 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 445 selfloop transitions, 94 changer transitions 0/594 dead transitions. [2024-06-14 12:24:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 594 transitions, 10531 flow [2024-06-14 12:24:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-14 12:24:18,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-14 12:24:18,747 INFO L175 Difference]: Start difference. First operand has 364 places, 583 transitions, 9412 flow. Second operand 7 states and 123 transitions. [2024-06-14 12:24:18,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 594 transitions, 10531 flow [2024-06-14 12:24:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 594 transitions, 10365 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-14 12:24:21,044 INFO L231 Difference]: Finished difference. Result has 366 places, 583 transitions, 9442 flow [2024-06-14 12:24:21,044 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} [2024-06-14 12:24:21,044 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 320 predicate places. [2024-06-14 12:24:21,044 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 583 transitions, 9442 flow [2024-06-14 12:24:21,044 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) [2024-06-14 12:24:21,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:21,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:24:21,045 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)] === [2024-06-14 12:24:21,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1474826181, now seen corresponding path program 4 times [2024-06-14 12:24:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421016761] [2024-06-14 12:24:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421016761] [2024-06-14 12:24:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421016761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:22,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:24:22,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789666873] [2024-06-14 12:24:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:24:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:24:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:24:22,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:24:22,215 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) [2024-06-14 12:24:22,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:22,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:24:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:24,309 INFO L124 PetriNetUnfolderBase]: 5013/7576 cut-off events. [2024-06-14 12:24:24,310 INFO L125 PetriNetUnfolderBase]: For 1352429/1352461 co-relation queries the response was YES. [2024-06-14 12:24:24,395 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. [2024-06-14 12:24:24,438 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 503 selfloop transitions, 40 changer transitions 0/592 dead transitions. [2024-06-14 12:24:24,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 592 transitions, 10556 flow [2024-06-14 12:24:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-14 12:24:24,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35873015873015873 [2024-06-14 12:24:24,439 INFO L175 Difference]: Start difference. First operand has 366 places, 583 transitions, 9442 flow. Second operand 7 states and 113 transitions. [2024-06-14 12:24:24,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 592 transitions, 10556 flow [2024-06-14 12:24:26,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 592 transitions, 10218 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:24:26,622 INFO L231 Difference]: Finished difference. Result has 366 places, 583 transitions, 9190 flow [2024-06-14 12:24:26,622 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} [2024-06-14 12:24:26,623 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 320 predicate places. [2024-06-14 12:24:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 583 transitions, 9190 flow [2024-06-14 12:24:26,623 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) [2024-06-14 12:24:26,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:26,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:24:26,623 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)] === [2024-06-14 12:24:26,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -248419079, now seen corresponding path program 1 times [2024-06-14 12:24:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427790480] [2024-06-14 12:24:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427790480] [2024-06-14 12:24:27,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427790480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:27,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752943860] [2024-06-14 12:24:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:27,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:27,757 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) [2024-06-14 12:24:27,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:27,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:27,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:29,488 INFO L124 PetriNetUnfolderBase]: 4812/7378 cut-off events. [2024-06-14 12:24:29,488 INFO L125 PetriNetUnfolderBase]: For 1212465/1212465 co-relation queries the response was YES. [2024-06-14 12:24:29,563 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. [2024-06-14 12:24:29,600 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 570 selfloop transitions, 25 changer transitions 0/605 dead transitions. [2024-06-14 12:24:29,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 605 transitions, 10750 flow [2024-06-14 12:24:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-14 12:24:29,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:24:29,601 INFO L175 Difference]: Start difference. First operand has 366 places, 583 transitions, 9190 flow. Second operand 7 states and 126 transitions. [2024-06-14 12:24:29,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 605 transitions, 10750 flow [2024-06-14 12:24:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 605 transitions, 10660 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:24:31,894 INFO L231 Difference]: Finished difference. Result has 367 places, 589 transitions, 9306 flow [2024-06-14 12:24:31,894 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} [2024-06-14 12:24:31,895 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 321 predicate places. [2024-06-14 12:24:31,895 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 589 transitions, 9306 flow [2024-06-14 12:24:31,895 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) [2024-06-14 12:24:31,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:31,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:31,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:24:31,895 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)] === [2024-06-14 12:24:31,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -248239589, now seen corresponding path program 2 times [2024-06-14 12:24:31,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:31,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879908022] [2024-06-14 12:24:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:31,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879908022] [2024-06-14 12:24:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879908022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595180329] [2024-06-14 12:24:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:33,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:33,029 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) [2024-06-14 12:24:33,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:33,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:33,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:34,811 INFO L124 PetriNetUnfolderBase]: 4817/7385 cut-off events. [2024-06-14 12:24:34,811 INFO L125 PetriNetUnfolderBase]: For 1239954/1239954 co-relation queries the response was YES. [2024-06-14 12:24:34,885 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. [2024-06-14 12:24:34,923 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 568 selfloop transitions, 27 changer transitions 0/605 dead transitions. [2024-06-14 12:24:34,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 605 transitions, 10788 flow [2024-06-14 12:24:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-14 12:24:34,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-06-14 12:24:34,924 INFO L175 Difference]: Start difference. First operand has 367 places, 589 transitions, 9306 flow. Second operand 7 states and 124 transitions. [2024-06-14 12:24:34,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 605 transitions, 10788 flow [2024-06-14 12:24:37,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 605 transitions, 10679 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-14 12:24:37,181 INFO L231 Difference]: Finished difference. Result has 371 places, 592 transitions, 9335 flow [2024-06-14 12:24:37,181 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} [2024-06-14 12:24:37,181 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 325 predicate places. [2024-06-14 12:24:37,181 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 592 transitions, 9335 flow [2024-06-14 12:24:37,181 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) [2024-06-14 12:24:37,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:37,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:37,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:24:37,182 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)] === [2024-06-14 12:24:37,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash -248239341, now seen corresponding path program 1 times [2024-06-14 12:24:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354714095] [2024-06-14 12:24:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:37,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:38,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:38,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354714095] [2024-06-14 12:24:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354714095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:38,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:38,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849855418] [2024-06-14 12:24:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:38,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:38,290 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) [2024-06-14 12:24:38,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:38,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:38,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:40,047 INFO L124 PetriNetUnfolderBase]: 4712/7255 cut-off events. [2024-06-14 12:24:40,047 INFO L125 PetriNetUnfolderBase]: For 1261982/1262017 co-relation queries the response was YES. [2024-06-14 12:24:40,119 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. [2024-06-14 12:24:40,153 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 534 selfloop transitions, 24 changer transitions 0/611 dead transitions. [2024-06-14 12:24:40,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 611 transitions, 10787 flow [2024-06-14 12:24:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-14 12:24:40,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-06-14 12:24:40,154 INFO L175 Difference]: Start difference. First operand has 371 places, 592 transitions, 9335 flow. Second operand 7 states and 124 transitions. [2024-06-14 12:24:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 611 transitions, 10787 flow [2024-06-14 12:24:42,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 611 transitions, 10695 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-14 12:24:42,409 INFO L231 Difference]: Finished difference. Result has 374 places, 598 transitions, 9423 flow [2024-06-14 12:24:42,409 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} [2024-06-14 12:24:42,410 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 328 predicate places. [2024-06-14 12:24:42,410 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 598 transitions, 9423 flow [2024-06-14 12:24:42,410 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) [2024-06-14 12:24:42,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:42,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:42,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:24:42,410 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)] === [2024-06-14 12:24:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1490264923, now seen corresponding path program 2 times [2024-06-14 12:24:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:42,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563955843] [2024-06-14 12:24:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563955843] [2024-06-14 12:24:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563955843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:43,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:43,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:43,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193821232] [2024-06-14 12:24:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:43,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:43,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:43,452 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) [2024-06-14 12:24:43,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:43,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:45,355 INFO L124 PetriNetUnfolderBase]: 4717/7262 cut-off events. [2024-06-14 12:24:45,355 INFO L125 PetriNetUnfolderBase]: For 1289610/1289645 co-relation queries the response was YES. [2024-06-14 12:24:45,426 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. [2024-06-14 12:24:45,460 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 542 selfloop transitions, 15 changer transitions 0/610 dead transitions. [2024-06-14 12:24:45,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 610 transitions, 10631 flow [2024-06-14 12:24:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-14 12:24:45,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682539682539683 [2024-06-14 12:24:45,461 INFO L175 Difference]: Start difference. First operand has 374 places, 598 transitions, 9423 flow. Second operand 7 states and 116 transitions. [2024-06-14 12:24:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 610 transitions, 10631 flow [2024-06-14 12:24:47,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 610 transitions, 10554 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-14 12:24:47,758 INFO L231 Difference]: Finished difference. Result has 378 places, 601 transitions, 9454 flow [2024-06-14 12:24:47,759 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} [2024-06-14 12:24:47,759 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 332 predicate places. [2024-06-14 12:24:47,759 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 601 transitions, 9454 flow [2024-06-14 12:24:47,759 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) [2024-06-14 12:24:47,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:47,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:47,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:24:47,759 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)] === [2024-06-14 12:24:47,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1474535463, now seen corresponding path program 3 times [2024-06-14 12:24:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:47,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115479442] [2024-06-14 12:24:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:48,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115479442] [2024-06-14 12:24:48,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115479442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:48,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:48,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143331827] [2024-06-14 12:24:48,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:48,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:48,870 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) [2024-06-14 12:24:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:50,784 INFO L124 PetriNetUnfolderBase]: 4714/7258 cut-off events. [2024-06-14 12:24:50,784 INFO L125 PetriNetUnfolderBase]: For 1311301/1311336 co-relation queries the response was YES. [2024-06-14 12:24:50,858 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. [2024-06-14 12:24:50,892 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 537 selfloop transitions, 20 changer transitions 0/610 dead transitions. [2024-06-14 12:24:50,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 610 transitions, 10596 flow [2024-06-14 12:24:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-14 12:24:50,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746031746031746 [2024-06-14 12:24:50,894 INFO L175 Difference]: Start difference. First operand has 378 places, 601 transitions, 9454 flow. Second operand 7 states and 118 transitions. [2024-06-14 12:24:50,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 610 transitions, 10596 flow [2024-06-14 12:24:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 610 transitions, 10480 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-14 12:24:53,497 INFO L231 Difference]: Finished difference. Result has 380 places, 601 transitions, 9384 flow [2024-06-14 12:24:53,497 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} [2024-06-14 12:24:53,497 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 334 predicate places. [2024-06-14 12:24:53,497 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 601 transitions, 9384 flow [2024-06-14 12:24:53,497 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) [2024-06-14 12:24:53,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:53,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:53,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:24:53,498 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)] === [2024-06-14 12:24:53,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -237862031, now seen corresponding path program 3 times [2024-06-14 12:24:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:53,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339457744] [2024-06-14 12:24:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:53,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:24:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:24:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:24:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339457744] [2024-06-14 12:24:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339457744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:24:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:24:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:24:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766820000] [2024-06-14 12:24:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:24:54,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:24:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:24:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:24:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:24:54,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:24:54,568 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) [2024-06-14 12:24:54,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:24:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:24:54,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:24:56,537 INFO L124 PetriNetUnfolderBase]: 4833/7403 cut-off events. [2024-06-14 12:24:56,537 INFO L125 PetriNetUnfolderBase]: For 1335298/1335298 co-relation queries the response was YES. [2024-06-14 12:24:56,609 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. [2024-06-14 12:24:56,643 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 582 selfloop transitions, 15 changer transitions 0/610 dead transitions. [2024-06-14 12:24:56,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 610 transitions, 10606 flow [2024-06-14 12:24:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:24:56,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:24:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-14 12:24:56,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682539682539683 [2024-06-14 12:24:56,644 INFO L175 Difference]: Start difference. First operand has 380 places, 601 transitions, 9384 flow. Second operand 7 states and 116 transitions. [2024-06-14 12:24:56,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 610 transitions, 10606 flow [2024-06-14 12:24:59,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 610 transitions, 10494 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 12:24:59,340 INFO L231 Difference]: Finished difference. Result has 381 places, 601 transitions, 9308 flow [2024-06-14 12:24:59,341 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} [2024-06-14 12:24:59,341 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 335 predicate places. [2024-06-14 12:24:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 601 transitions, 9308 flow [2024-06-14 12:24:59,341 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) [2024-06-14 12:24:59,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:24:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:24:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:24:59,342 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)] === [2024-06-14 12:24:59,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:24:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -77234399, now seen corresponding path program 1 times [2024-06-14 12:24:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:24:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243680138] [2024-06-14 12:24:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:24:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:24:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243680138] [2024-06-14 12:25:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243680138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:00,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932836502] [2024-06-14 12:25:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:01,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:01,019 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) [2024-06-14 12:25:01,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:01,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:01,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:03,096 INFO L124 PetriNetUnfolderBase]: 4897/7490 cut-off events. [2024-06-14 12:25:03,096 INFO L125 PetriNetUnfolderBase]: For 1574746/1574759 co-relation queries the response was YES. [2024-06-14 12:25:03,184 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. [2024-06-14 12:25:03,226 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 528 selfloop transitions, 94 changer transitions 0/646 dead transitions. [2024-06-14 12:25:03,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 646 transitions, 10832 flow [2024-06-14 12:25:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-14 12:25:03,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:25:03,228 INFO L175 Difference]: Start difference. First operand has 381 places, 601 transitions, 9308 flow. Second operand 11 states and 198 transitions. [2024-06-14 12:25:03,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 646 transitions, 10832 flow [2024-06-14 12:25:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 646 transitions, 10774 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:25:05,755 INFO L231 Difference]: Finished difference. Result has 385 places, 603 transitions, 9579 flow [2024-06-14 12:25:05,755 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} [2024-06-14 12:25:05,755 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 339 predicate places. [2024-06-14 12:25:05,755 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 603 transitions, 9579 flow [2024-06-14 12:25:05,755 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) [2024-06-14 12:25:05,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:05,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:05,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:25:05,756 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)] === [2024-06-14 12:25:05,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1603346685, now seen corresponding path program 2 times [2024-06-14 12:25:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336480893] [2024-06-14 12:25:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336480893] [2024-06-14 12:25:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336480893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:07,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45710939] [2024-06-14 12:25:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:07,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:07,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:07,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:07,289 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) [2024-06-14 12:25:07,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:07,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:07,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:09,320 INFO L124 PetriNetUnfolderBase]: 4922/7549 cut-off events. [2024-06-14 12:25:09,320 INFO L125 PetriNetUnfolderBase]: For 1608127/1608140 co-relation queries the response was YES. [2024-06-14 12:25:09,402 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. [2024-06-14 12:25:09,442 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 538 selfloop transitions, 88 changer transitions 0/650 dead transitions. [2024-06-14 12:25:09,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 650 transitions, 11250 flow [2024-06-14 12:25:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-14 12:25:09,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:25:09,443 INFO L175 Difference]: Start difference. First operand has 385 places, 603 transitions, 9579 flow. Second operand 11 states and 200 transitions. [2024-06-14 12:25:09,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 650 transitions, 11250 flow [2024-06-14 12:25:12,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 650 transitions, 10815 flow, removed 124 selfloop flow, removed 9 redundant places. [2024-06-14 12:25:12,336 INFO L231 Difference]: Finished difference. Result has 387 places, 607 transitions, 9607 flow [2024-06-14 12:25:12,336 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} [2024-06-14 12:25:12,337 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 341 predicate places. [2024-06-14 12:25:12,337 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 607 transitions, 9607 flow [2024-06-14 12:25:12,337 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) [2024-06-14 12:25:12,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:12,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:12,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:25:12,337 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)] === [2024-06-14 12:25:12,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 187803555, now seen corresponding path program 3 times [2024-06-14 12:25:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565333122] [2024-06-14 12:25:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565333122] [2024-06-14 12:25:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565333122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:13,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878310789] [2024-06-14 12:25:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:13,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:14,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:14,004 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) [2024-06-14 12:25:14,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:14,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:14,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:16,108 INFO L124 PetriNetUnfolderBase]: 4978/7667 cut-off events. [2024-06-14 12:25:16,109 INFO L125 PetriNetUnfolderBase]: For 1693812/1693821 co-relation queries the response was YES. [2024-06-14 12:25:16,196 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. [2024-06-14 12:25:16,239 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 521 selfloop transitions, 110 changer transitions 0/655 dead transitions. [2024-06-14 12:25:16,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 655 transitions, 11633 flow [2024-06-14 12:25:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-14 12:25:16,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:25:16,240 INFO L175 Difference]: Start difference. First operand has 387 places, 607 transitions, 9607 flow. Second operand 11 states and 205 transitions. [2024-06-14 12:25:16,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 655 transitions, 11633 flow [2024-06-14 12:25:19,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 655 transitions, 11366 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:19,184 INFO L231 Difference]: Finished difference. Result has 390 places, 611 transitions, 9844 flow [2024-06-14 12:25:19,184 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} [2024-06-14 12:25:19,185 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 344 predicate places. [2024-06-14 12:25:19,185 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 611 transitions, 9844 flow [2024-06-14 12:25:19,185 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) [2024-06-14 12:25:19,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:19,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:25:19,185 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)] === [2024-06-14 12:25:19,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1603435551, now seen corresponding path program 4 times [2024-06-14 12:25:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048533087] [2024-06-14 12:25:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:20,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048533087] [2024-06-14 12:25:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048533087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:20,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:20,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270558202] [2024-06-14 12:25:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:20,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:20,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:20,786 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) [2024-06-14 12:25:20,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:20,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:22,968 INFO L124 PetriNetUnfolderBase]: 4995/7700 cut-off events. [2024-06-14 12:25:22,969 INFO L125 PetriNetUnfolderBase]: For 1734516/1734525 co-relation queries the response was YES. [2024-06-14 12:25:23,055 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. [2024-06-14 12:25:23,100 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 519 selfloop transitions, 114 changer transitions 0/657 dead transitions. [2024-06-14 12:25:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 657 transitions, 11742 flow [2024-06-14 12:25:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-14 12:25:23,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161616161616162 [2024-06-14 12:25:23,101 INFO L175 Difference]: Start difference. First operand has 390 places, 611 transitions, 9844 flow. Second operand 11 states and 206 transitions. [2024-06-14 12:25:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 657 transitions, 11742 flow [2024-06-14 12:25:26,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 657 transitions, 11436 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-14 12:25:26,378 INFO L231 Difference]: Finished difference. Result has 393 places, 613 transitions, 9918 flow [2024-06-14 12:25:26,378 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} [2024-06-14 12:25:26,378 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 347 predicate places. [2024-06-14 12:25:26,378 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 613 transitions, 9918 flow [2024-06-14 12:25:26,378 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) [2024-06-14 12:25:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:26,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:25:26,379 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)] === [2024-06-14 12:25:26,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2001025431, now seen corresponding path program 5 times [2024-06-14 12:25:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472184388] [2024-06-14 12:25:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472184388] [2024-06-14 12:25:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472184388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119304620] [2024-06-14 12:25:28,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:28,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:28,168 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) [2024-06-14 12:25:28,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:28,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:30,200 INFO L124 PetriNetUnfolderBase]: 4983/7688 cut-off events. [2024-06-14 12:25:30,200 INFO L125 PetriNetUnfolderBase]: For 1749927/1749936 co-relation queries the response was YES. [2024-06-14 12:25:30,296 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. [2024-06-14 12:25:30,338 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 523 selfloop transitions, 108 changer transitions 0/655 dead transitions. [2024-06-14 12:25:30,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 655 transitions, 11342 flow [2024-06-14 12:25:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-14 12:25:30,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080808080808081 [2024-06-14 12:25:30,339 INFO L175 Difference]: Start difference. First operand has 393 places, 613 transitions, 9918 flow. Second operand 11 states and 202 transitions. [2024-06-14 12:25:30,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 655 transitions, 11342 flow [2024-06-14 12:25:33,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 655 transitions, 10876 flow, removed 121 selfloop flow, removed 9 redundant places. [2024-06-14 12:25:33,913 INFO L231 Difference]: Finished difference. Result has 395 places, 613 transitions, 9682 flow [2024-06-14 12:25:33,913 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} [2024-06-14 12:25:33,914 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 349 predicate places. [2024-06-14 12:25:33,914 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 613 transitions, 9682 flow [2024-06-14 12:25:33,914 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) [2024-06-14 12:25:33,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:33,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:33,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:25:33,914 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)] === [2024-06-14 12:25:33,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:33,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1354955067, now seen corresponding path program 1 times [2024-06-14 12:25:33,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:33,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760138731] [2024-06-14 12:25:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:33,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760138731] [2024-06-14 12:25:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760138731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:25:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768388049] [2024-06-14 12:25:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:25:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:25:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:25:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:25:35,126 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) [2024-06-14 12:25:35,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:35,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:25:35,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:37,248 INFO L124 PetriNetUnfolderBase]: 5187/7863 cut-off events. [2024-06-14 12:25:37,248 INFO L125 PetriNetUnfolderBase]: For 1747664/1747696 co-relation queries the response was YES. [2024-06-14 12:25:37,340 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. [2024-06-14 12:25:37,382 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 494 selfloop transitions, 104 changer transitions 0/650 dead transitions. [2024-06-14 12:25:37,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 650 transitions, 11500 flow [2024-06-14 12:25:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:25:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:25:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-14 12:25:37,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:25:37,383 INFO L175 Difference]: Start difference. First operand has 395 places, 613 transitions, 9682 flow. Second operand 9 states and 162 transitions. [2024-06-14 12:25:37,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 650 transitions, 11500 flow [2024-06-14 12:25:41,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 650 transitions, 11270 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:25:41,043 INFO L231 Difference]: Finished difference. Result has 395 places, 622 transitions, 9847 flow [2024-06-14 12:25:41,044 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} [2024-06-14 12:25:41,044 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 349 predicate places. [2024-06-14 12:25:41,044 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 622 transitions, 9847 flow [2024-06-14 12:25:41,044 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) [2024-06-14 12:25:41,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:41,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:25:41,044 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)] === [2024-06-14 12:25:41,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1763000107, now seen corresponding path program 6 times [2024-06-14 12:25:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057059431] [2024-06-14 12:25:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:42,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057059431] [2024-06-14 12:25:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057059431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:42,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:42,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093495449] [2024-06-14 12:25:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:42,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:42,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:42,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:42,653 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) [2024-06-14 12:25:42,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:42,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:42,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:44,778 INFO L124 PetriNetUnfolderBase]: 5068/7809 cut-off events. [2024-06-14 12:25:44,779 INFO L125 PetriNetUnfolderBase]: For 1815148/1815161 co-relation queries the response was YES. [2024-06-14 12:25:44,878 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. [2024-06-14 12:25:44,921 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 554 selfloop transitions, 88 changer transitions 0/669 dead transitions. [2024-06-14 12:25:44,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 669 transitions, 11440 flow [2024-06-14 12:25:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-14 12:25:44,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 12:25:44,923 INFO L175 Difference]: Start difference. First operand has 395 places, 622 transitions, 9847 flow. Second operand 11 states and 201 transitions. [2024-06-14 12:25:44,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 669 transitions, 11440 flow [2024-06-14 12:25:48,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 669 transitions, 11339 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 12:25:48,435 INFO L231 Difference]: Finished difference. Result has 402 places, 628 transitions, 10115 flow [2024-06-14 12:25:48,435 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} [2024-06-14 12:25:48,435 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 356 predicate places. [2024-06-14 12:25:48,436 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 628 transitions, 10115 flow [2024-06-14 12:25:48,436 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) [2024-06-14 12:25:48,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:48,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:48,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:25:48,436 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)] === [2024-06-14 12:25:48,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:48,437 INFO L85 PathProgramCache]: Analyzing trace with hash -549274607, now seen corresponding path program 7 times [2024-06-14 12:25:48,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:48,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205845097] [2024-06-14 12:25:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:50,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205845097] [2024-06-14 12:25:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205845097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:50,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128287461] [2024-06-14 12:25:50,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:50,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:50,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:50,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:50,258 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) [2024-06-14 12:25:50,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:50,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:50,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:25:52,749 INFO L124 PetriNetUnfolderBase]: 5100/7873 cut-off events. [2024-06-14 12:25:52,749 INFO L125 PetriNetUnfolderBase]: For 1858372/1858385 co-relation queries the response was YES. [2024-06-14 12:25:52,829 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. [2024-06-14 12:25:52,868 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 537 selfloop transitions, 108 changer transitions 0/672 dead transitions. [2024-06-14 12:25:52,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 672 transitions, 11715 flow [2024-06-14 12:25:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:25:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:25:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-14 12:25:52,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101010101010101 [2024-06-14 12:25:52,870 INFO L175 Difference]: Start difference. First operand has 402 places, 628 transitions, 10115 flow. Second operand 11 states and 203 transitions. [2024-06-14 12:25:52,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 672 transitions, 11715 flow [2024-06-14 12:25:56,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 672 transitions, 11416 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-14 12:25:56,614 INFO L231 Difference]: Finished difference. Result has 404 places, 632 transitions, 10214 flow [2024-06-14 12:25:56,614 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} [2024-06-14 12:25:56,615 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 358 predicate places. [2024-06-14 12:25:56,615 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 632 transitions, 10214 flow [2024-06-14 12:25:56,615 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) [2024-06-14 12:25:56,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:25:56,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:25:56,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:25:56,615 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)] === [2024-06-14 12:25:56,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:25:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash -549279257, now seen corresponding path program 8 times [2024-06-14 12:25:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:25:56,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102235607] [2024-06-14 12:25:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:25:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:25:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:25:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:25:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:25:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102235607] [2024-06-14 12:25:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102235607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:25:58,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:25:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:25:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532684948] [2024-06-14 12:25:58,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:25:58,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:25:58,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:25:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:25:58,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:25:58,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:25:58,290 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) [2024-06-14 12:25:58,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:25:58,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:25:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:00,560 INFO L124 PetriNetUnfolderBase]: 5128/7931 cut-off events. [2024-06-14 12:26:00,561 INFO L125 PetriNetUnfolderBase]: For 1882697/1882710 co-relation queries the response was YES. [2024-06-14 12:26:00,667 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. [2024-06-14 12:26:00,713 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 537 selfloop transitions, 112 changer transitions 0/676 dead transitions. [2024-06-14 12:26:00,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 676 transitions, 11822 flow [2024-06-14 12:26:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-14 12:26:00,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:26:00,715 INFO L175 Difference]: Start difference. First operand has 404 places, 632 transitions, 10214 flow. Second operand 11 states and 204 transitions. [2024-06-14 12:26:00,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 676 transitions, 11822 flow [2024-06-14 12:26:04,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 676 transitions, 11478 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-14 12:26:04,876 INFO L231 Difference]: Finished difference. Result has 406 places, 636 transitions, 10274 flow [2024-06-14 12:26:04,876 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} [2024-06-14 12:26:04,876 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 360 predicate places. [2024-06-14 12:26:04,876 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 636 transitions, 10274 flow [2024-06-14 12:26:04,876 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) [2024-06-14 12:26:04,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:04,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:04,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:26:04,877 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)] === [2024-06-14 12:26:04,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash -549394577, now seen corresponding path program 9 times [2024-06-14 12:26:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417859343] [2024-06-14 12:26:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417859343] [2024-06-14 12:26:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417859343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:06,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111406988] [2024-06-14 12:26:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:06,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:06,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:06,533 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) [2024-06-14 12:26:06,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:06,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:06,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:08,739 INFO L124 PetriNetUnfolderBase]: 5172/8009 cut-off events. [2024-06-14 12:26:08,739 INFO L125 PetriNetUnfolderBase]: For 1940705/1940718 co-relation queries the response was YES. [2024-06-14 12:26:08,848 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. [2024-06-14 12:26:08,897 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 535 selfloop transitions, 118 changer transitions 0/680 dead transitions. [2024-06-14 12:26:08,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 680 transitions, 11888 flow [2024-06-14 12:26:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-14 12:26:08,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:26:08,898 INFO L175 Difference]: Start difference. First operand has 406 places, 636 transitions, 10274 flow. Second operand 11 states and 205 transitions. [2024-06-14 12:26:08,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 680 transitions, 11888 flow [2024-06-14 12:26:13,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 680 transitions, 11545 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-14 12:26:13,351 INFO L231 Difference]: Finished difference. Result has 409 places, 640 transitions, 10349 flow [2024-06-14 12:26:13,351 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} [2024-06-14 12:26:13,351 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 363 predicate places. [2024-06-14 12:26:13,351 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 640 transitions, 10349 flow [2024-06-14 12:26:13,352 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) [2024-06-14 12:26:13,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:13,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:13,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:26:13,352 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)] === [2024-06-14 12:26:13,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2027489708, now seen corresponding path program 1 times [2024-06-14 12:26:13,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:13,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307244497] [2024-06-14 12:26:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:13,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307244497] [2024-06-14 12:26:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307244497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:14,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:26:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665407089] [2024-06-14 12:26:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:26:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:26:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:26:14,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:14,490 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) [2024-06-14 12:26:14,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:14,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:14,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:16,672 INFO L124 PetriNetUnfolderBase]: 5260/8076 cut-off events. [2024-06-14 12:26:16,672 INFO L125 PetriNetUnfolderBase]: For 1954715/1954739 co-relation queries the response was YES. [2024-06-14 12:26:16,761 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. [2024-06-14 12:26:16,802 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 569 selfloop transitions, 35 changer transitions 0/668 dead transitions. [2024-06-14 12:26:16,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 668 transitions, 11981 flow [2024-06-14 12:26:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:26:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:26:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-14 12:26:16,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-14 12:26:16,804 INFO L175 Difference]: Start difference. First operand has 409 places, 640 transitions, 10349 flow. Second operand 8 states and 147 transitions. [2024-06-14 12:26:16,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 668 transitions, 11981 flow [2024-06-14 12:26:20,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 668 transitions, 11575 flow, removed 74 selfloop flow, removed 10 redundant places. [2024-06-14 12:26:20,780 INFO L231 Difference]: Finished difference. Result has 407 places, 646 transitions, 10173 flow [2024-06-14 12:26:20,780 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} [2024-06-14 12:26:20,780 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 361 predicate places. [2024-06-14 12:26:20,781 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 646 transitions, 10173 flow [2024-06-14 12:26:20,781 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) [2024-06-14 12:26:20,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:20,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:20,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:26:20,781 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)] === [2024-06-14 12:26:20,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1263836177, now seen corresponding path program 10 times [2024-06-14 12:26:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804634304] [2024-06-14 12:26:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804634304] [2024-06-14 12:26:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804634304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:22,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:22,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655702010] [2024-06-14 12:26:22,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:22,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:22,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:22,742 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) [2024-06-14 12:26:22,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:22,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:25,145 INFO L124 PetriNetUnfolderBase]: 5198/8056 cut-off events. [2024-06-14 12:26:25,146 INFO L125 PetriNetUnfolderBase]: For 2016539/2016552 co-relation queries the response was YES. [2024-06-14 12:26:25,243 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. [2024-06-14 12:26:25,291 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 514 selfloop transitions, 148 changer transitions 0/689 dead transitions. [2024-06-14 12:26:25,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 689 transitions, 11819 flow [2024-06-14 12:26:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-14 12:26:25,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-14 12:26:25,292 INFO L175 Difference]: Start difference. First operand has 407 places, 646 transitions, 10173 flow. Second operand 11 states and 209 transitions. [2024-06-14 12:26:25,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 689 transitions, 11819 flow [2024-06-14 12:26:29,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 689 transitions, 11693 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-14 12:26:29,304 INFO L231 Difference]: Finished difference. Result has 414 places, 648 transitions, 10515 flow [2024-06-14 12:26:29,304 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} [2024-06-14 12:26:29,304 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 368 predicate places. [2024-06-14 12:26:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 648 transitions, 10515 flow [2024-06-14 12:26:29,304 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) [2024-06-14 12:26:29,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:29,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:29,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:26:29,304 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)] === [2024-06-14 12:26:29,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1263831527, now seen corresponding path program 11 times [2024-06-14 12:26:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155443742] [2024-06-14 12:26:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:30,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155443742] [2024-06-14 12:26:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155443742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:30,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579772192] [2024-06-14 12:26:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:30,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:31,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:31,141 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) [2024-06-14 12:26:31,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:31,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:31,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:33,709 INFO L124 PetriNetUnfolderBase]: 5231/8113 cut-off events. [2024-06-14 12:26:33,709 INFO L125 PetriNetUnfolderBase]: For 2075674/2075687 co-relation queries the response was YES. [2024-06-14 12:26:33,813 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. [2024-06-14 12:26:33,862 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 513 selfloop transitions, 151 changer transitions 0/691 dead transitions. [2024-06-14 12:26:33,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 691 transitions, 12165 flow [2024-06-14 12:26:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-14 12:26:33,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:26:33,864 INFO L175 Difference]: Start difference. First operand has 414 places, 648 transitions, 10515 flow. Second operand 11 states and 210 transitions. [2024-06-14 12:26:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 691 transitions, 12165 flow [2024-06-14 12:26:39,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 691 transitions, 11723 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-14 12:26:39,046 INFO L231 Difference]: Finished difference. Result has 417 places, 650 transitions, 10550 flow [2024-06-14 12:26:39,046 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} [2024-06-14 12:26:39,047 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 371 predicate places. [2024-06-14 12:26:39,047 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 650 transitions, 10550 flow [2024-06-14 12:26:39,047 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) [2024-06-14 12:26:39,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:39,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:26:39,047 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)] === [2024-06-14 12:26:39,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1440967697, now seen corresponding path program 12 times [2024-06-14 12:26:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93992724] [2024-06-14 12:26:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93992724] [2024-06-14 12:26:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93992724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:40,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734521642] [2024-06-14 12:26:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:40,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:40,644 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) [2024-06-14 12:26:40,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:40,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:40,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:43,077 INFO L124 PetriNetUnfolderBase]: 5335/8287 cut-off events. [2024-06-14 12:26:43,078 INFO L125 PetriNetUnfolderBase]: For 2249380/2249393 co-relation queries the response was YES. [2024-06-14 12:26:43,185 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. [2024-06-14 12:26:43,234 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 511 selfloop transitions, 159 changer transitions 0/697 dead transitions. [2024-06-14 12:26:43,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 697 transitions, 12260 flow [2024-06-14 12:26:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-14 12:26:43,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262626262626263 [2024-06-14 12:26:43,236 INFO L175 Difference]: Start difference. First operand has 417 places, 650 transitions, 10550 flow. Second operand 11 states and 211 transitions. [2024-06-14 12:26:43,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 697 transitions, 12260 flow [2024-06-14 12:26:48,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 697 transitions, 11801 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-14 12:26:48,060 INFO L231 Difference]: Finished difference. Result has 419 places, 652 transitions, 10591 flow [2024-06-14 12:26:48,060 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} [2024-06-14 12:26:48,060 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 373 predicate places. [2024-06-14 12:26:48,060 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 652 transitions, 10591 flow [2024-06-14 12:26:48,060 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) [2024-06-14 12:26:48,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:48,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:48,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:26:48,061 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)] === [2024-06-14 12:26:48,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1434538607, now seen corresponding path program 13 times [2024-06-14 12:26:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75978128] [2024-06-14 12:26:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:48,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:49,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75978128] [2024-06-14 12:26:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75978128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:49,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114755908] [2024-06-14 12:26:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:49,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:50,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:50,076 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) [2024-06-14 12:26:50,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:50,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:50,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:26:52,442 INFO L124 PetriNetUnfolderBase]: 5348/8316 cut-off events. [2024-06-14 12:26:52,442 INFO L125 PetriNetUnfolderBase]: For 2191345/2191358 co-relation queries the response was YES. [2024-06-14 12:26:52,557 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. [2024-06-14 12:26:52,609 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 515 selfloop transitions, 153 changer transitions 0/695 dead transitions. [2024-06-14 12:26:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 695 transitions, 12261 flow [2024-06-14 12:26:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:26:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:26:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-14 12:26:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202020202020202 [2024-06-14 12:26:52,611 INFO L175 Difference]: Start difference. First operand has 419 places, 652 transitions, 10591 flow. Second operand 11 states and 208 transitions. [2024-06-14 12:26:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 695 transitions, 12261 flow [2024-06-14 12:26:57,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 695 transitions, 11813 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-14 12:26:57,604 INFO L231 Difference]: Finished difference. Result has 421 places, 654 transitions, 10633 flow [2024-06-14 12:26:57,605 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} [2024-06-14 12:26:57,605 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 375 predicate places. [2024-06-14 12:26:57,605 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 654 transitions, 10633 flow [2024-06-14 12:26:57,605 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) [2024-06-14 12:26:57,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:26:57,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:26:57,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:26:57,605 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)] === [2024-06-14 12:26:57,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:26:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -537238609, now seen corresponding path program 14 times [2024-06-14 12:26:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:26:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780123420] [2024-06-14 12:26:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:26:57,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:26:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:26:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:26:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:26:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780123420] [2024-06-14 12:26:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780123420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:26:59,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:26:59,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:26:59,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399602306] [2024-06-14 12:26:59,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:26:59,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:26:59,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:26:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:26:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:26:59,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:26:59,550 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) [2024-06-14 12:26:59,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:26:59,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:26:59,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:01,970 INFO L124 PetriNetUnfolderBase]: 5382/8389 cut-off events. [2024-06-14 12:27:01,970 INFO L125 PetriNetUnfolderBase]: For 2211927/2211945 co-relation queries the response was YES. [2024-06-14 12:27:02,092 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. [2024-06-14 12:27:02,143 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 516 selfloop transitions, 162 changer transitions 0/705 dead transitions. [2024-06-14 12:27:02,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 705 transitions, 12917 flow [2024-06-14 12:27:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:27:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:27:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-14 12:27:02,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-14 12:27:02,144 INFO L175 Difference]: Start difference. First operand has 421 places, 654 transitions, 10633 flow. Second operand 11 states and 215 transitions. [2024-06-14 12:27:02,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 705 transitions, 12917 flow [2024-06-14 12:27:06,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 705 transitions, 12447 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-14 12:27:06,918 INFO L231 Difference]: Finished difference. Result has 423 places, 658 transitions, 10850 flow [2024-06-14 12:27:06,919 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} [2024-06-14 12:27:06,919 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 377 predicate places. [2024-06-14 12:27:06,919 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 658 transitions, 10850 flow [2024-06-14 12:27:06,919 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) [2024-06-14 12:27:06,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:06,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:06,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:27:06,920 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)] === [2024-06-14 12:27:06,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash -366420859, now seen corresponding path program 15 times [2024-06-14 12:27:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325512766] [2024-06-14 12:27:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325512766] [2024-06-14 12:27:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325512766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319207010] [2024-06-14 12:27:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:08,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:08,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:08,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:27:08,887 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) [2024-06-14 12:27:08,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:08,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:27:08,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:11,514 INFO L124 PetriNetUnfolderBase]: 5374/8372 cut-off events. [2024-06-14 12:27:11,514 INFO L125 PetriNetUnfolderBase]: For 2221613/2221636 co-relation queries the response was YES. [2024-06-14 12:27:11,622 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. [2024-06-14 12:27:11,668 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 518 selfloop transitions, 158 changer transitions 0/703 dead transitions. [2024-06-14 12:27:11,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 703 transitions, 12400 flow [2024-06-14 12:27:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:27:11,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:27:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-14 12:27:11,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42828282828282827 [2024-06-14 12:27:11,669 INFO L175 Difference]: Start difference. First operand has 423 places, 658 transitions, 10850 flow. Second operand 11 states and 212 transitions. [2024-06-14 12:27:11,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 703 transitions, 12400 flow [2024-06-14 12:27:16,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 703 transitions, 11929 flow, removed 146 selfloop flow, removed 7 redundant places. [2024-06-14 12:27:16,703 INFO L231 Difference]: Finished difference. Result has 427 places, 658 transitions, 10702 flow [2024-06-14 12:27:16,703 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} [2024-06-14 12:27:16,703 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 381 predicate places. [2024-06-14 12:27:16,703 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 658 transitions, 10702 flow [2024-06-14 12:27:16,703 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) [2024-06-14 12:27:16,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:16,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:16,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:27:16,704 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)] === [2024-06-14 12:27:16,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1441213961, now seen corresponding path program 1 times [2024-06-14 12:27:16,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:16,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724278282] [2024-06-14 12:27:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:16,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:18,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:18,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724278282] [2024-06-14 12:27:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724278282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:18,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:27:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552477550] [2024-06-14 12:27:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:27:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:27:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:27:18,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:27:18,461 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) [2024-06-14 12:27:18,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:27:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:21,698 INFO L124 PetriNetUnfolderBase]: 6033/9110 cut-off events. [2024-06-14 12:27:21,699 INFO L125 PetriNetUnfolderBase]: For 2392805/2392813 co-relation queries the response was YES. [2024-06-14 12:27:21,820 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. [2024-06-14 12:27:21,865 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 530 selfloop transitions, 165 changer transitions 0/710 dead transitions. [2024-06-14 12:27:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 710 transitions, 12466 flow [2024-06-14 12:27:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:27:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:27:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-14 12:27:21,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40185185185185185 [2024-06-14 12:27:21,866 INFO L175 Difference]: Start difference. First operand has 427 places, 658 transitions, 10702 flow. Second operand 12 states and 217 transitions. [2024-06-14 12:27:21,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 710 transitions, 12466 flow [2024-06-14 12:27:26,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 710 transitions, 12076 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 12:27:26,233 INFO L231 Difference]: Finished difference. Result has 429 places, 660 transitions, 10805 flow [2024-06-14 12:27:26,233 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} [2024-06-14 12:27:26,234 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 383 predicate places. [2024-06-14 12:27:26,234 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 660 transitions, 10805 flow [2024-06-14 12:27:26,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:27:26,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:26,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:26,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:27:26,235 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)] === [2024-06-14 12:27:26,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1491766976, now seen corresponding path program 2 times [2024-06-14 12:27:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573207397] [2024-06-14 12:27:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573207397] [2024-06-14 12:27:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573207397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:27,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:27:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75388615] [2024-06-14 12:27:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:27:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:27:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:27:27,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:27:27,294 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) [2024-06-14 12:27:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:27:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:30,217 INFO L124 PetriNetUnfolderBase]: 5591/8626 cut-off events. [2024-06-14 12:27:30,217 INFO L125 PetriNetUnfolderBase]: For 2297252/2297276 co-relation queries the response was YES. [2024-06-14 12:27:30,318 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. [2024-06-14 12:27:30,360 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 583 selfloop transitions, 31 changer transitions 0/678 dead transitions. [2024-06-14 12:27:30,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 678 transitions, 12093 flow [2024-06-14 12:27:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:27:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:27:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-14 12:27:30,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-14 12:27:30,361 INFO L175 Difference]: Start difference. First operand has 429 places, 660 transitions, 10805 flow. Second operand 8 states and 141 transitions. [2024-06-14 12:27:30,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 678 transitions, 12093 flow [2024-06-14 12:27:35,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 678 transitions, 11642 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-14 12:27:35,177 INFO L231 Difference]: Finished difference. Result has 428 places, 660 transitions, 10422 flow [2024-06-14 12:27:35,177 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} [2024-06-14 12:27:35,177 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 382 predicate places. [2024-06-14 12:27:35,177 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 660 transitions, 10422 flow [2024-06-14 12:27:35,177 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) [2024-06-14 12:27:35,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:35,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:35,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:27:35,178 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)] === [2024-06-14 12:27:35,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash 178499251, now seen corresponding path program 2 times [2024-06-14 12:27:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530119615] [2024-06-14 12:27:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:36,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:36,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530119615] [2024-06-14 12:27:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530119615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:27:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570220988] [2024-06-14 12:27:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:36,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:27:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:27:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:27:36,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:27:36,518 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) [2024-06-14 12:27:36,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:36,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:27:36,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:39,684 INFO L124 PetriNetUnfolderBase]: 5770/8822 cut-off events. [2024-06-14 12:27:39,684 INFO L125 PetriNetUnfolderBase]: For 2338752/2338780 co-relation queries the response was YES. [2024-06-14 12:27:39,976 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. [2024-06-14 12:27:40,021 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 542 selfloop transitions, 114 changer transitions 0/708 dead transitions. [2024-06-14 12:27:40,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 708 transitions, 12767 flow [2024-06-14 12:27:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:27:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:27:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-14 12:27:40,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40987654320987654 [2024-06-14 12:27:40,022 INFO L175 Difference]: Start difference. First operand has 428 places, 660 transitions, 10422 flow. Second operand 9 states and 166 transitions. [2024-06-14 12:27:40,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 708 transitions, 12767 flow [2024-06-14 12:27:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 708 transitions, 12707 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:27:45,157 INFO L231 Difference]: Finished difference. Result has 432 places, 676 transitions, 10848 flow [2024-06-14 12:27:45,157 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} [2024-06-14 12:27:45,158 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 386 predicate places. [2024-06-14 12:27:45,158 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 676 transitions, 10848 flow [2024-06-14 12:27:45,158 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) [2024-06-14 12:27:45,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:45,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:27:45,158 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)] === [2024-06-14 12:27:45,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1534662451, now seen corresponding path program 3 times [2024-06-14 12:27:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207274538] [2024-06-14 12:27:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207274538] [2024-06-14 12:27:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207274538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:46,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:27:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633232273] [2024-06-14 12:27:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:27:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:27:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:27:46,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:27:46,547 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) [2024-06-14 12:27:46,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:46,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:27:46,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:49,784 INFO L124 PetriNetUnfolderBase]: 5780/8835 cut-off events. [2024-06-14 12:27:49,784 INFO L125 PetriNetUnfolderBase]: For 2378862/2378890 co-relation queries the response was YES. [2024-06-14 12:27:49,885 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. [2024-06-14 12:27:49,927 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 533 selfloop transitions, 124 changer transitions 0/709 dead transitions. [2024-06-14 12:27:49,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 709 transitions, 13039 flow [2024-06-14 12:27:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:27:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:27:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-14 12:27:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39753086419753086 [2024-06-14 12:27:49,928 INFO L175 Difference]: Start difference. First operand has 432 places, 676 transitions, 10848 flow. Second operand 9 states and 161 transitions. [2024-06-14 12:27:49,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 709 transitions, 13039 flow [2024-06-14 12:27:54,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 709 transitions, 12843 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-14 12:27:54,325 INFO L231 Difference]: Finished difference. Result has 437 places, 681 transitions, 11005 flow [2024-06-14 12:27:54,325 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} [2024-06-14 12:27:54,325 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 391 predicate places. [2024-06-14 12:27:54,325 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 681 transitions, 11005 flow [2024-06-14 12:27:54,325 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) [2024-06-14 12:27:54,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:27:54,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:27:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:27:54,326 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)] === [2024-06-14 12:27:54,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:27:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash 189612286, now seen corresponding path program 1 times [2024-06-14 12:27:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:27:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639224463] [2024-06-14 12:27:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:27:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:27:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:27:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:27:55,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:27:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639224463] [2024-06-14 12:27:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639224463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:27:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:27:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:27:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919633827] [2024-06-14 12:27:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:27:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:27:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:27:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:27:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:27:55,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:27:55,749 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) [2024-06-14 12:27:55,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:27:55,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:27:55,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:27:58,754 INFO L124 PetriNetUnfolderBase]: 5785/8843 cut-off events. [2024-06-14 12:27:58,754 INFO L125 PetriNetUnfolderBase]: For 2414362/2414386 co-relation queries the response was YES. [2024-06-14 12:27:58,863 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. [2024-06-14 12:27:58,915 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 613 selfloop transitions, 45 changer transitions 0/710 dead transitions. [2024-06-14 12:27:58,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 710 transitions, 12737 flow [2024-06-14 12:27:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:27:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:27:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-14 12:27:58,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3728395061728395 [2024-06-14 12:27:58,916 INFO L175 Difference]: Start difference. First operand has 437 places, 681 transitions, 11005 flow. Second operand 9 states and 151 transitions. [2024-06-14 12:27:58,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 710 transitions, 12737 flow [2024-06-14 12:28:03,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 710 transitions, 12446 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-14 12:28:03,965 INFO L231 Difference]: Finished difference. Result has 441 places, 690 transitions, 10961 flow [2024-06-14 12:28:03,965 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} [2024-06-14 12:28:03,966 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 395 predicate places. [2024-06-14 12:28:03,966 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 690 transitions, 10961 flow [2024-06-14 12:28:03,966 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) [2024-06-14 12:28:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:03,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:28:03,966 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)] === [2024-06-14 12:28:03,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1491776431, now seen corresponding path program 4 times [2024-06-14 12:28:03,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:03,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627872098] [2024-06-14 12:28:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:05,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:05,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627872098] [2024-06-14 12:28:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627872098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:28:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35181240] [2024-06-14 12:28:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:28:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:28:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:28:05,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-14 12:28:05,237 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) [2024-06-14 12:28:05,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:05,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-14 12:28:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:08,349 INFO L124 PetriNetUnfolderBase]: 5779/8834 cut-off events. [2024-06-14 12:28:08,349 INFO L125 PetriNetUnfolderBase]: For 2445534/2445562 co-relation queries the response was YES. [2024-06-14 12:28:08,462 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. [2024-06-14 12:28:08,510 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 535 selfloop transitions, 129 changer transitions 0/716 dead transitions. [2024-06-14 12:28:08,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 716 transitions, 12843 flow [2024-06-14 12:28:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:28:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:28:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-14 12:28:08,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-14 12:28:08,511 INFO L175 Difference]: Start difference. First operand has 441 places, 690 transitions, 10961 flow. Second operand 9 states and 159 transitions. [2024-06-14 12:28:08,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 716 transitions, 12843 flow [2024-06-14 12:28:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 716 transitions, 12714 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-14 12:28:14,057 INFO L231 Difference]: Finished difference. Result has 446 places, 690 transitions, 11098 flow [2024-06-14 12:28:14,057 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} [2024-06-14 12:28:14,058 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 400 predicate places. [2024-06-14 12:28:14,058 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 690 transitions, 11098 flow [2024-06-14 12:28:14,058 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) [2024-06-14 12:28:14,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:14,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:14,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:28:14,058 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)] === [2024-06-14 12:28:14,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1784464175, now seen corresponding path program 16 times [2024-06-14 12:28:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868372891] [2024-06-14 12:28:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:14,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:28:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:28:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:28:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:28:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868372891] [2024-06-14 12:28:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868372891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:28:15,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:28:15,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:28:15,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021112419] [2024-06-14 12:28:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:28:15,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:28:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:28:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:28:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:28:15,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-14 12:28:15,769 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) [2024-06-14 12:28:15,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:28:15,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-14 12:28:15,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:28:18,844 INFO L124 PetriNetUnfolderBase]: 5564/8674 cut-off events. [2024-06-14 12:28:18,845 INFO L125 PetriNetUnfolderBase]: For 2551537/2551550 co-relation queries the response was YES. [2024-06-14 12:28:18,944 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. [2024-06-14 12:28:18,986 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 571 selfloop transitions, 124 changer transitions 0/730 dead transitions. [2024-06-14 12:28:18,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 730 transitions, 12808 flow [2024-06-14 12:28:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:28:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:28:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-14 12:28:18,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022222222222222 [2024-06-14 12:28:18,988 INFO L175 Difference]: Start difference. First operand has 446 places, 690 transitions, 11098 flow. Second operand 10 states and 181 transitions. [2024-06-14 12:28:18,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 730 transitions, 12808 flow [2024-06-14 12:28:23,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 730 transitions, 12562 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:28:23,481 INFO L231 Difference]: Finished difference. Result has 449 places, 692 transitions, 11311 flow [2024-06-14 12:28:23,481 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} [2024-06-14 12:28:23,482 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 403 predicate places. [2024-06-14 12:28:23,482 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 692 transitions, 11311 flow [2024-06-14 12:28:23,482 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) [2024-06-14 12:28:23,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:28:23,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:28:23,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:28:23,483 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)] === [2024-06-14 12:28:23,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:28:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1842556625, now seen corresponding path program 17 times [2024-06-14 12:28:23,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:28:23,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13356695] [2024-06-14 12:28:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:28:23,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms