./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/mix035_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:21:09,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:21:09,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:21:09,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:21:09,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:21:09,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:21:09,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:21:09,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:21:09,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:21:09,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:21:09,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:21:09,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:21:09,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:21:09,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:21:09,142 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:21:09,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:21:09,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:21:09,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:21:09,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:21:09,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:21:09,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:21:09,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:21:09,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:21:09,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:21:09,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:21:09,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:21:09,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:21:09,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:21:09,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:21:09,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:21:09,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:21:09,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:21:09,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:21:09,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:21:09,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:21:09,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:21:09,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:21:09,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:21:09,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:21:09,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:21:09,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:21:09,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:21:09,383 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:21:09,384 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:21:09,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035_power.opt_rmo.opt.yml/witness.yml [2024-06-28 03:21:09,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:21:09,559 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:21:09,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-28 03:21:10,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:21:10,785 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:21:10,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-28 03:21:10,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbb9e152/341afcb01e2e41f286a13b5e9134f82a/FLAGfbef9ad0c [2024-06-28 03:21:10,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbb9e152/341afcb01e2e41f286a13b5e9134f82a [2024-06-28 03:21:10,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:21:10,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:21:10,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:21:10,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:21:10,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:21:10,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:21:09" (1/2) ... [2024-06-28 03:21:10,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788b6d27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:21:10, skipping insertion in model container [2024-06-28 03:21:10,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:21:09" (1/2) ... [2024-06-28 03:21:10,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fd4b097 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:21:10, skipping insertion in model container [2024-06-28 03:21:10,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:21:10" (2/2) ... [2024-06-28 03:21:10,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788b6d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:10, skipping insertion in model container [2024-06-28 03:21:10,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:21:10" (2/2) ... [2024-06-28 03:21:10,834 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:21:10,904 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:21:10,905 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:21:10,905 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:21:10,905 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:21:10,905 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:21:10,906 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-28 03:21:10,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:21:11,281 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:21:11,289 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:21:11,416 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:21:11,457 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:21:11,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11 WrapperNode [2024-06-28 03:21:11,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:21:11,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:21:11,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:21:11,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:21:11,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,521 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 128 [2024-06-28 03:21:11,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:21:11,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:21:11,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:21:11,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:21:11,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,564 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]. [2024-06-28 03:21:11,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:21:11,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:21:11,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:21:11,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:21:11,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (1/1) ... [2024-06-28 03:21:11,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:21:11,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:21:11,614 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) [2024-06-28 03:21:11,632 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 [2024-06-28 03:21:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:21:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:21:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:21:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:21:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:21:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:21:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:21:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:21:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:21:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:21:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:21:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:21:11,645 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:21:11,738 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:21:11,739 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:21:12,017 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:21:12,018 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:21:12,148 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:21:12,148 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:21:12,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:21:12 BoogieIcfgContainer [2024-06-28 03:21:12,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:21:12,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:21:12,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:21:12,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:21:12,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:21:09" (1/4) ... [2024-06-28 03:21:12,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e0263 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:21:12, skipping insertion in model container [2024-06-28 03:21:12,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:21:10" (2/4) ... [2024-06-28 03:21:12,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e0263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:21:12, skipping insertion in model container [2024-06-28 03:21:12,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:21:11" (3/4) ... [2024-06-28 03:21:12,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e0263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:21:12, skipping insertion in model container [2024-06-28 03:21:12,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:21:12" (4/4) ... [2024-06-28 03:21:12,156 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035_power.opt_rmo.opt.i [2024-06-28 03:21:12,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:21:12,169 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:21:12,169 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:21:12,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:21:12,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:21:12,268 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 03:21:12,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:21:12,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:21:12,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:21:12,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 03:21:12,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:21:12,293 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;@4be5dae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:21:12,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:21:12,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:21:12,300 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:21:12,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:21:12,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:12,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:21:12,301 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)] === [2024-06-28 03:21:12,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash 371757946, now seen corresponding path program 1 times [2024-06-28 03:21:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83236462] [2024-06-28 03:21:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:13,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83236462] [2024-06-28 03:21:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83236462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:13,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:21:13,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330812291] [2024-06-28 03:21:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:13,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:21:13,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:21:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:21:13,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 03:21:13,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:13,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 03:21:13,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:13,584 INFO L124 PetriNetUnfolderBase]: 1116/1796 cut-off events. [2024-06-28 03:21:13,585 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 03:21:13,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 1796 events. 1116/1796 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8974 event pairs, 765 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 3535. Up to 1676 conditions per place. [2024-06-28 03:21:13,599 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-28 03:21:13,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 171 flow [2024-06-28 03:21:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:21:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:21:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 03:21:13,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-28 03:21:13,611 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 80 transitions. [2024-06-28 03:21:13,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 171 flow [2024-06-28 03:21:13,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:13,616 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 03:21:13,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 03:21:13,620 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 03:21:13,620 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 03:21:13,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:13,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:21:13,622 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)] === [2024-06-28 03:21:13,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:13,623 INFO L85 PathProgramCache]: Analyzing trace with hash 777140057, now seen corresponding path program 1 times [2024-06-28 03:21:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:13,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799650990] [2024-06-28 03:21:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799650990] [2024-06-28 03:21:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799650990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:21:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174353033] [2024-06-28 03:21:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:21:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:14,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:21:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:21:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-28 03:21:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:14,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-28 03:21:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:14,529 INFO L124 PetriNetUnfolderBase]: 1274/1990 cut-off events. [2024-06-28 03:21:14,529 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-28 03:21:14,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1990 events. 1274/1990 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9739 event pairs, 608 based on Foata normal form. 6/1964 useless extension candidates. Maximal degree in co-relation 4484. Up to 1873 conditions per place. [2024-06-28 03:21:14,541 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 03:21:14,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 244 flow [2024-06-28 03:21:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:21:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:21:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 03:21:14,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-28 03:21:14,544 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 102 transitions. [2024-06-28 03:21:14,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 244 flow [2024-06-28 03:21:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:21:14,547 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 03:21:14,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 03:21:14,548 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 03:21:14,548 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 03:21:14,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:14,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:14,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:14,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:21:14,551 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)] === [2024-06-28 03:21:14,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1907000598, now seen corresponding path program 1 times [2024-06-28 03:21:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:14,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746826507] [2024-06-28 03:21:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:14,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746826507] [2024-06-28 03:21:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746826507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:15,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:15,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:21:15,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540305223] [2024-06-28 03:21:15,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:15,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:21:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:21:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:21:15,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-28 03:21:15,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:15,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:15,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-28 03:21:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:15,993 INFO L124 PetriNetUnfolderBase]: 1265/1973 cut-off events. [2024-06-28 03:21:15,993 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2024-06-28 03:21:15,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1973 events. 1265/1973 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9651 event pairs, 445 based on Foata normal form. 6/1947 useless extension candidates. Maximal degree in co-relation 4956. Up to 1828 conditions per place. [2024-06-28 03:21:16,003 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 50 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-28 03:21:16,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 350 flow [2024-06-28 03:21:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:21:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:21:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 03:21:16,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-06-28 03:21:16,005 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 143 transitions. [2024-06-28 03:21:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 350 flow [2024-06-28 03:21:16,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 330 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:21:16,008 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 181 flow [2024-06-28 03:21:16,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 03:21:16,008 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-28 03:21:16,008 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 181 flow [2024-06-28 03:21:16,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:16,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:16,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:21:16,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:16,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1123968294, now seen corresponding path program 1 times [2024-06-28 03:21:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:16,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903231715] [2024-06-28 03:21:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903231715] [2024-06-28 03:21:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903231715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:16,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:16,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:21:16,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541151597] [2024-06-28 03:21:16,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:16,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:21:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:21:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:21:16,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-28 03:21:16,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:16,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:16,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-28 03:21:16,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:17,016 INFO L124 PetriNetUnfolderBase]: 1090/1819 cut-off events. [2024-06-28 03:21:17,016 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-06-28 03:21:17,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 1819 events. 1090/1819 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9430 event pairs, 460 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 4877. Up to 1627 conditions per place. [2024-06-28 03:21:17,025 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-28 03:21:17,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 323 flow [2024-06-28 03:21:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:21:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:21:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-28 03:21:17,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-28 03:21:17,027 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 181 flow. Second operand 5 states and 104 transitions. [2024-06-28 03:21:17,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 323 flow [2024-06-28 03:21:17,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:17,029 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-28 03:21:17,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 03:21:17,030 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-28 03:21:17,030 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-28 03:21:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:17,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:17,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:21:17,031 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)] === [2024-06-28 03:21:17,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1841701687, now seen corresponding path program 1 times [2024-06-28 03:21:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:17,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438568869] [2024-06-28 03:21:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:17,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438568869] [2024-06-28 03:21:17,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438568869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:17,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:17,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:21:17,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349376978] [2024-06-28 03:21:17,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:17,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:21:17,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:21:17,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:21:17,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:17,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 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) [2024-06-28 03:21:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:18,200 INFO L124 PetriNetUnfolderBase]: 1294/2057 cut-off events. [2024-06-28 03:21:18,200 INFO L125 PetriNetUnfolderBase]: For 3114/3116 co-relation queries the response was YES. [2024-06-28 03:21:18,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 2057 events. 1294/2057 cut-off events. For 3114/3116 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10234 event pairs, 543 based on Foata normal form. 6/2054 useless extension candidates. Maximal degree in co-relation 6087. Up to 1893 conditions per place. [2024-06-28 03:21:18,211 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 49 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-28 03:21:18,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 421 flow [2024-06-28 03:21:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:21:18,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-28 03:21:18,213 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:21:18,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 421 flow [2024-06-28 03:21:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 399 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:18,222 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 285 flow [2024-06-28 03:21:18,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-28 03:21:18,223 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-28 03:21:18,223 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 285 flow [2024-06-28 03:21:18,224 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) [2024-06-28 03:21:18,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:18,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:18,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:21:18,225 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)] === [2024-06-28 03:21:18,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash -300447945, now seen corresponding path program 2 times [2024-06-28 03:21:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:18,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519436894] [2024-06-28 03:21:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519436894] [2024-06-28 03:21:18,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519436894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:18,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:18,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:21:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523792263] [2024-06-28 03:21:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:18,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:21:18,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:21:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:21:18,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:18,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 285 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) [2024-06-28 03:21:18,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:18,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:18,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:19,328 INFO L124 PetriNetUnfolderBase]: 1337/2125 cut-off events. [2024-06-28 03:21:19,329 INFO L125 PetriNetUnfolderBase]: For 4710/4710 co-relation queries the response was YES. [2024-06-28 03:21:19,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6946 conditions, 2125 events. 1337/2125 cut-off events. For 4710/4710 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10592 event pairs, 530 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 6924. Up to 1943 conditions per place. [2024-06-28 03:21:19,339 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 57 selfloop transitions, 24 changer transitions 0/87 dead transitions. [2024-06-28 03:21:19,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 586 flow [2024-06-28 03:21:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:21:19,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-28 03:21:19,340 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 285 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:21:19,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 586 flow [2024-06-28 03:21:19,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 543 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:21:19,345 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 407 flow [2024-06-28 03:21:19,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=259, 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=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-28 03:21:19,347 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 03:21:19,347 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 407 flow [2024-06-28 03:21:19,347 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) [2024-06-28 03:21:19,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:19,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:19,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:21:19,348 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)] === [2024-06-28 03:21:19,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1847415607, now seen corresponding path program 3 times [2024-06-28 03:21:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:19,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453155970] [2024-06-28 03:21:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:20,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:20,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453155970] [2024-06-28 03:21:20,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453155970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:20,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:20,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:21:20,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455086457] [2024-06-28 03:21:20,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:20,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:21:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:21:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:21:20,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:20,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 407 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) [2024-06-28 03:21:20,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:20,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:20,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:20,511 INFO L124 PetriNetUnfolderBase]: 1343/2146 cut-off events. [2024-06-28 03:21:20,512 INFO L125 PetriNetUnfolderBase]: For 6739/6741 co-relation queries the response was YES. [2024-06-28 03:21:20,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 2146 events. 1343/2146 cut-off events. For 6739/6741 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10794 event pairs, 526 based on Foata normal form. 6/2141 useless extension candidates. Maximal degree in co-relation 7514. Up to 1907 conditions per place. [2024-06-28 03:21:20,523 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 48 selfloop transitions, 31 changer transitions 0/85 dead transitions. [2024-06-28 03:21:20,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 645 flow [2024-06-28 03:21:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:21:20,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-28 03:21:20,525 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 407 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:21:20,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 645 flow [2024-06-28 03:21:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 597 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:20,529 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 465 flow [2024-06-28 03:21:20,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-28 03:21:20,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-28 03:21:20,530 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 465 flow [2024-06-28 03:21:20,530 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) [2024-06-28 03:21:20,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:20,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:20,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:21:20,530 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)] === [2024-06-28 03:21:20,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:20,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2096774213, now seen corresponding path program 1 times [2024-06-28 03:21:20,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:20,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645827107] [2024-06-28 03:21:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:20,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645827107] [2024-06-28 03:21:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645827107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:21,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:21,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:21,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092416685] [2024-06-28 03:21:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:21,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:21,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:21,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:21,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:21,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:21,893 INFO L124 PetriNetUnfolderBase]: 1470/2394 cut-off events. [2024-06-28 03:21:21,893 INFO L125 PetriNetUnfolderBase]: For 8917/8917 co-relation queries the response was YES. [2024-06-28 03:21:21,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8685 conditions, 2394 events. 1470/2394 cut-off events. For 8917/8917 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12326 event pairs, 572 based on Foata normal form. 2/2384 useless extension candidates. Maximal degree in co-relation 8659. Up to 2162 conditions per place. [2024-06-28 03:21:21,908 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 72 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-28 03:21:21,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 732 flow [2024-06-28 03:21:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:21:21,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-28 03:21:21,909 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 465 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:21:21,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 732 flow [2024-06-28 03:21:21,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 647 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:21:21,915 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 469 flow [2024-06-28 03:21:21,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2024-06-28 03:21:21,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 03:21:21,916 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 469 flow [2024-06-28 03:21:21,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:21,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:21,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:21:21,917 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)] === [2024-06-28 03:21:21,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1241855871, now seen corresponding path program 1 times [2024-06-28 03:21:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312450843] [2024-06-28 03:21:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:21,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:22,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312450843] [2024-06-28 03:21:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312450843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:22,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:22,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:22,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217005850] [2024-06-28 03:21:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:23,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:23,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:23,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:23,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:23,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:23,454 INFO L124 PetriNetUnfolderBase]: 1531/2429 cut-off events. [2024-06-28 03:21:23,454 INFO L125 PetriNetUnfolderBase]: For 11651/11651 co-relation queries the response was YES. [2024-06-28 03:21:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9601 conditions, 2429 events. 1531/2429 cut-off events. For 11651/11651 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12406 event pairs, 568 based on Foata normal form. 2/2401 useless extension candidates. Maximal degree in co-relation 9573. Up to 2219 conditions per place. [2024-06-28 03:21:23,467 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 72 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-28 03:21:23,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 765 flow [2024-06-28 03:21:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:21:23,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 03:21:23,468 INFO L175 Difference]: Start difference. First operand has 70 places, 75 transitions, 469 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:21:23,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 765 flow [2024-06-28 03:21:23,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 723 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:23,475 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 523 flow [2024-06-28 03:21:23,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-28 03:21:23,476 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-28 03:21:23,476 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 523 flow [2024-06-28 03:21:23,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:23,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:23,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:23,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:21:23,477 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)] === [2024-06-28 03:21:23,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1435556139, now seen corresponding path program 1 times [2024-06-28 03:21:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710758807] [2024-06-28 03:21:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:24,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710758807] [2024-06-28 03:21:24,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710758807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:24,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:24,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:24,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909147774] [2024-06-28 03:21:24,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:24,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:24,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:24,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:24,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 523 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:24,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:24,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:24,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:24,918 INFO L124 PetriNetUnfolderBase]: 1452/2355 cut-off events. [2024-06-28 03:21:24,918 INFO L125 PetriNetUnfolderBase]: For 12710/12710 co-relation queries the response was YES. [2024-06-28 03:21:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 2355 events. 1452/2355 cut-off events. For 12710/12710 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11966 event pairs, 537 based on Foata normal form. 4/2343 useless extension candidates. Maximal degree in co-relation 9331. Up to 2118 conditions per place. [2024-06-28 03:21:24,931 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 80 selfloop transitions, 17 changer transitions 0/103 dead transitions. [2024-06-28 03:21:24,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 813 flow [2024-06-28 03:21:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:21:24,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:21:24,932 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 523 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:21:24,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 813 flow [2024-06-28 03:21:24,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 103 transitions, 741 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:21:24,940 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 524 flow [2024-06-28 03:21:24,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 03:21:24,941 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-28 03:21:24,941 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 524 flow [2024-06-28 03:21:24,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:24,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:24,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:21:24,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:24,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 851056793, now seen corresponding path program 1 times [2024-06-28 03:21:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351350650] [2024-06-28 03:21:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351350650] [2024-06-28 03:21:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351350650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:25,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:21:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004815792] [2024-06-28 03:21:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:21:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:21:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:21:25,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:25,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:25,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:25,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:26,012 INFO L124 PetriNetUnfolderBase]: 1449/2351 cut-off events. [2024-06-28 03:21:26,012 INFO L125 PetriNetUnfolderBase]: For 14543/14543 co-relation queries the response was YES. [2024-06-28 03:21:26,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9563 conditions, 2351 events. 1449/2351 cut-off events. For 14543/14543 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11913 event pairs, 551 based on Foata normal form. 1/2336 useless extension candidates. Maximal degree in co-relation 9533. Up to 2156 conditions per place. [2024-06-28 03:21:26,028 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 75 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2024-06-28 03:21:26,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 90 transitions, 732 flow [2024-06-28 03:21:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:21:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:21:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-28 03:21:26,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 03:21:26,030 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 524 flow. Second operand 5 states and 96 transitions. [2024-06-28 03:21:26,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 90 transitions, 732 flow [2024-06-28 03:21:26,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 677 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:26,040 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 519 flow [2024-06-28 03:21:26,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-28 03:21:26,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-28 03:21:26,041 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 519 flow [2024-06-28 03:21:26,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:26,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:26,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:26,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:21:26,042 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)] === [2024-06-28 03:21:26,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 348830230, now seen corresponding path program 1 times [2024-06-28 03:21:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61986638] [2024-06-28 03:21:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:26,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61986638] [2024-06-28 03:21:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61986638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:26,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:26,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522284765] [2024-06-28 03:21:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:26,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:27,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:27,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:27,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:27,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:27,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:27,504 INFO L124 PetriNetUnfolderBase]: 1667/2593 cut-off events. [2024-06-28 03:21:27,504 INFO L125 PetriNetUnfolderBase]: For 19246/19246 co-relation queries the response was YES. [2024-06-28 03:21:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11157 conditions, 2593 events. 1667/2593 cut-off events. For 19246/19246 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12657 event pairs, 563 based on Foata normal form. 2/2593 useless extension candidates. Maximal degree in co-relation 11126. Up to 2387 conditions per place. [2024-06-28 03:21:27,521 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 86 selfloop transitions, 31 changer transitions 0/122 dead transitions. [2024-06-28 03:21:27,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 921 flow [2024-06-28 03:21:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:21:27,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:21:27,523 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 519 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:21:27,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 921 flow [2024-06-28 03:21:27,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 893 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:27,534 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 695 flow [2024-06-28 03:21:27,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=695, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-28 03:21:27,535 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 03:21:27,535 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 695 flow [2024-06-28 03:21:27,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:27,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:27,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:27,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:21:27,536 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)] === [2024-06-28 03:21:27,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1552291704, now seen corresponding path program 2 times [2024-06-28 03:21:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:27,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996395357] [2024-06-28 03:21:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:28,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:28,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996395357] [2024-06-28 03:21:28,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996395357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:28,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:28,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567425452] [2024-06-28 03:21:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:28,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:28,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:28,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 695 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:28,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:28,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:28,970 INFO L124 PetriNetUnfolderBase]: 1689/2639 cut-off events. [2024-06-28 03:21:28,971 INFO L125 PetriNetUnfolderBase]: For 22720/22722 co-relation queries the response was YES. [2024-06-28 03:21:28,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12146 conditions, 2639 events. 1689/2639 cut-off events. For 22720/22722 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12923 event pairs, 568 based on Foata normal form. 4/2640 useless extension candidates. Maximal degree in co-relation 12112. Up to 2382 conditions per place. [2024-06-28 03:21:28,985 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 84 selfloop transitions, 43 changer transitions 0/132 dead transitions. [2024-06-28 03:21:28,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1095 flow [2024-06-28 03:21:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:21:28,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:21:28,987 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 695 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:21:28,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1095 flow [2024-06-28 03:21:28,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 1024 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:29,002 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 824 flow [2024-06-28 03:21:29,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=824, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2024-06-28 03:21:29,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-28 03:21:29,003 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 824 flow [2024-06-28 03:21:29,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:29,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:29,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:29,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:21:29,004 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)] === [2024-06-28 03:21:29,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash 652974598, now seen corresponding path program 3 times [2024-06-28 03:21:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457528256] [2024-06-28 03:21:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457528256] [2024-06-28 03:21:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457528256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:29,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8600300] [2024-06-28 03:21:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:29,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:29,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:29,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:29,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:29,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:30,369 INFO L124 PetriNetUnfolderBase]: 1700/2643 cut-off events. [2024-06-28 03:21:30,370 INFO L125 PetriNetUnfolderBase]: For 26225/26227 co-relation queries the response was YES. [2024-06-28 03:21:30,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12837 conditions, 2643 events. 1700/2643 cut-off events. For 26225/26227 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12912 event pairs, 568 based on Foata normal form. 4/2643 useless extension candidates. Maximal degree in co-relation 12801. Up to 2352 conditions per place. [2024-06-28 03:21:30,423 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 81 selfloop transitions, 54 changer transitions 0/140 dead transitions. [2024-06-28 03:21:30,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 1294 flow [2024-06-28 03:21:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:21:30,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:21:30,425 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 824 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:21:30,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 1294 flow [2024-06-28 03:21:30,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 1245 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 03:21:30,442 INFO L231 Difference]: Finished difference. Result has 93 places, 116 transitions, 977 flow [2024-06-28 03:21:30,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=977, PETRI_PLACES=93, PETRI_TRANSITIONS=116} [2024-06-28 03:21:30,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-28 03:21:30,443 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 116 transitions, 977 flow [2024-06-28 03:21:30,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:30,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:30,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:21:30,443 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)] === [2024-06-28 03:21:30,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1544940054, now seen corresponding path program 4 times [2024-06-28 03:21:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519723729] [2024-06-28 03:21:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519723729] [2024-06-28 03:21:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519723729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:31,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:31,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568190583] [2024-06-28 03:21:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:31,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:31,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:31,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 977 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:31,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:31,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:31,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:31,878 INFO L124 PetriNetUnfolderBase]: 1695/2636 cut-off events. [2024-06-28 03:21:31,878 INFO L125 PetriNetUnfolderBase]: For 29107/29109 co-relation queries the response was YES. [2024-06-28 03:21:31,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13198 conditions, 2636 events. 1695/2636 cut-off events. For 29107/29109 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12873 event pairs, 568 based on Foata normal form. 4/2636 useless extension candidates. Maximal degree in co-relation 13160. Up to 2391 conditions per place. [2024-06-28 03:21:31,893 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 91 selfloop transitions, 42 changer transitions 0/138 dead transitions. [2024-06-28 03:21:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 138 transitions, 1309 flow [2024-06-28 03:21:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:21:31,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-28 03:21:31,894 INFO L175 Difference]: Start difference. First operand has 93 places, 116 transitions, 977 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:21:31,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 138 transitions, 1309 flow [2024-06-28 03:21:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 138 transitions, 1210 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:31,917 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 970 flow [2024-06-28 03:21:31,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=970, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2024-06-28 03:21:31,918 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-28 03:21:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 970 flow [2024-06-28 03:21:31,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:31,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:31,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:21:31,919 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)] === [2024-06-28 03:21:31,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 582571835, now seen corresponding path program 1 times [2024-06-28 03:21:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:31,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152006653] [2024-06-28 03:21:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:31,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152006653] [2024-06-28 03:21:32,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152006653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:32,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:32,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642771105] [2024-06-28 03:21:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:32,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:32,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 970 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:32,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:32,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:33,332 INFO L124 PetriNetUnfolderBase]: 1692/2651 cut-off events. [2024-06-28 03:21:33,333 INFO L125 PetriNetUnfolderBase]: For 31831/31831 co-relation queries the response was YES. [2024-06-28 03:21:33,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 2651 events. 1692/2651 cut-off events. For 31831/31831 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13084 event pairs, 586 based on Foata normal form. 1/2650 useless extension candidates. Maximal degree in co-relation 13421. Up to 2503 conditions per place. [2024-06-28 03:21:33,371 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 110 selfloop transitions, 12 changer transitions 0/127 dead transitions. [2024-06-28 03:21:33,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 127 transitions, 1260 flow [2024-06-28 03:21:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:21:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:21:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:21:33,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:21:33,373 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 970 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:21:33,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 127 transitions, 1260 flow [2024-06-28 03:21:33,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 1122 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:33,421 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 892 flow [2024-06-28 03:21:33,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=892, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-06-28 03:21:33,422 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 03:21:33,422 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 892 flow [2024-06-28 03:21:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:33,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:33,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:21:33,423 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)] === [2024-06-28 03:21:33,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1678272236, now seen corresponding path program 1 times [2024-06-28 03:21:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:33,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067311668] [2024-06-28 03:21:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:34,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067311668] [2024-06-28 03:21:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067311668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610469750] [2024-06-28 03:21:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:34,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:34,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:34,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:34,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:34,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:34,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:34,924 INFO L124 PetriNetUnfolderBase]: 1711/2685 cut-off events. [2024-06-28 03:21:34,924 INFO L125 PetriNetUnfolderBase]: For 40648/40648 co-relation queries the response was YES. [2024-06-28 03:21:34,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14671 conditions, 2685 events. 1711/2685 cut-off events. For 40648/40648 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13711 event pairs, 389 based on Foata normal form. 4/2681 useless extension candidates. Maximal degree in co-relation 14632. Up to 2390 conditions per place. [2024-06-28 03:21:34,968 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 117 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2024-06-28 03:21:34,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 1298 flow [2024-06-28 03:21:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:21:34,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 03:21:34,971 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 892 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:21:34,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 1298 flow [2024-06-28 03:21:34,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 150 transitions, 1260 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:34,990 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 951 flow [2024-06-28 03:21:34,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=951, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-28 03:21:34,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-28 03:21:34,991 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 951 flow [2024-06-28 03:21:34,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:34,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:34,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:34,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:21:34,991 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)] === [2024-06-28 03:21:34,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash -561231118, now seen corresponding path program 2 times [2024-06-28 03:21:34,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:34,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502155847] [2024-06-28 03:21:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:34,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502155847] [2024-06-28 03:21:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502155847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:35,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884735739] [2024-06-28 03:21:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:35,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:36,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:36,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 951 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:36,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:36,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:36,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:36,597 INFO L124 PetriNetUnfolderBase]: 1714/2710 cut-off events. [2024-06-28 03:21:36,598 INFO L125 PetriNetUnfolderBase]: For 46256/46256 co-relation queries the response was YES. [2024-06-28 03:21:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15280 conditions, 2710 events. 1714/2710 cut-off events. For 46256/46256 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13946 event pairs, 487 based on Foata normal form. 4/2712 useless extension candidates. Maximal degree in co-relation 15240. Up to 2429 conditions per place. [2024-06-28 03:21:36,613 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 117 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2024-06-28 03:21:36,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 1361 flow [2024-06-28 03:21:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:21:36,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 03:21:36,615 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 951 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:21:36,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 1361 flow [2024-06-28 03:21:36,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 151 transitions, 1282 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:36,639 INFO L231 Difference]: Finished difference. Result has 101 places, 123 transitions, 975 flow [2024-06-28 03:21:36,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=101, PETRI_TRANSITIONS=123} [2024-06-28 03:21:36,640 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-06-28 03:21:36,640 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 123 transitions, 975 flow [2024-06-28 03:21:36,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:36,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:36,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:36,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:21:36,641 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)] === [2024-06-28 03:21:36,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2071348302, now seen corresponding path program 3 times [2024-06-28 03:21:36,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978347585] [2024-06-28 03:21:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978347585] [2024-06-28 03:21:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978347585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077214458] [2024-06-28 03:21:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:37,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:37,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:37,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 123 transitions, 975 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:37,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:37,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:37,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:38,300 INFO L124 PetriNetUnfolderBase]: 1738/2754 cut-off events. [2024-06-28 03:21:38,300 INFO L125 PetriNetUnfolderBase]: For 53827/53827 co-relation queries the response was YES. [2024-06-28 03:21:38,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15932 conditions, 2754 events. 1738/2754 cut-off events. For 53827/53827 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14273 event pairs, 483 based on Foata normal form. 8/2760 useless extension candidates. Maximal degree in co-relation 15891. Up to 2403 conditions per place. [2024-06-28 03:21:38,317 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 102 selfloop transitions, 38 changer transitions 0/150 dead transitions. [2024-06-28 03:21:38,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 1377 flow [2024-06-28 03:21:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:21:38,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 03:21:38,318 INFO L175 Difference]: Start difference. First operand has 101 places, 123 transitions, 975 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:21:38,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 1377 flow [2024-06-28 03:21:38,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 1292 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:38,342 INFO L231 Difference]: Finished difference. Result has 103 places, 125 transitions, 1027 flow [2024-06-28 03:21:38,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1027, PETRI_PLACES=103, PETRI_TRANSITIONS=125} [2024-06-28 03:21:38,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-28 03:21:38,343 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 125 transitions, 1027 flow [2024-06-28 03:21:38,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:38,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:38,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:21:38,343 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)] === [2024-06-28 03:21:38,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2108332784, now seen corresponding path program 1 times [2024-06-28 03:21:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513249725] [2024-06-28 03:21:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:38,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513249725] [2024-06-28 03:21:39,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513249725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:39,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390942590] [2024-06-28 03:21:39,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:39,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:39,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:39,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 125 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:40,304 INFO L124 PetriNetUnfolderBase]: 1868/2904 cut-off events. [2024-06-28 03:21:40,305 INFO L125 PetriNetUnfolderBase]: For 57271/57271 co-relation queries the response was YES. [2024-06-28 03:21:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16532 conditions, 2904 events. 1868/2904 cut-off events. For 57271/57271 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14553 event pairs, 510 based on Foata normal form. 2/2904 useless extension candidates. Maximal degree in co-relation 16490. Up to 2678 conditions per place. [2024-06-28 03:21:40,321 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 128 selfloop transitions, 28 changer transitions 0/162 dead transitions. [2024-06-28 03:21:40,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 1503 flow [2024-06-28 03:21:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:21:40,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-28 03:21:40,323 INFO L175 Difference]: Start difference. First operand has 103 places, 125 transitions, 1027 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:21:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 1503 flow [2024-06-28 03:21:40,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 162 transitions, 1379 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:40,358 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 1049 flow [2024-06-28 03:21:40,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1049, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2024-06-28 03:21:40,359 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-28 03:21:40,359 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 1049 flow [2024-06-28 03:21:40,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:40,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:40,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:21:40,360 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)] === [2024-06-28 03:21:40,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2071163852, now seen corresponding path program 2 times [2024-06-28 03:21:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672944808] [2024-06-28 03:21:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672944808] [2024-06-28 03:21:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672944808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:41,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:41,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257929982] [2024-06-28 03:21:41,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:41,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:41,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:41,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:41,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:41,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:41,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:41,973 INFO L124 PetriNetUnfolderBase]: 1895/2948 cut-off events. [2024-06-28 03:21:41,973 INFO L125 PetriNetUnfolderBase]: For 63167/63167 co-relation queries the response was YES. [2024-06-28 03:21:41,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17312 conditions, 2948 events. 1895/2948 cut-off events. For 63167/63167 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14785 event pairs, 510 based on Foata normal form. 2/2948 useless extension candidates. Maximal degree in co-relation 17269. Up to 2567 conditions per place. [2024-06-28 03:21:41,990 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 110 selfloop transitions, 59 changer transitions 0/175 dead transitions. [2024-06-28 03:21:41,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1733 flow [2024-06-28 03:21:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:21:41,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-28 03:21:41,992 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 1049 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:21:41,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1733 flow [2024-06-28 03:21:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 175 transitions, 1608 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:42,027 INFO L231 Difference]: Finished difference. Result has 110 places, 144 transitions, 1254 flow [2024-06-28 03:21:42,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1254, PETRI_PLACES=110, PETRI_TRANSITIONS=144} [2024-06-28 03:21:42,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-28 03:21:42,028 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 144 transitions, 1254 flow [2024-06-28 03:21:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:42,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:42,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:42,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:21:42,028 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)] === [2024-06-28 03:21:42,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2071170362, now seen corresponding path program 3 times [2024-06-28 03:21:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956990108] [2024-06-28 03:21:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:43,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956990108] [2024-06-28 03:21:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956990108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:43,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:43,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007732014] [2024-06-28 03:21:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:43,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:43,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 1254 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:43,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:43,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:43,996 INFO L124 PetriNetUnfolderBase]: 1935/3006 cut-off events. [2024-06-28 03:21:43,996 INFO L125 PetriNetUnfolderBase]: For 70621/70621 co-relation queries the response was YES. [2024-06-28 03:21:44,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18241 conditions, 3006 events. 1935/3006 cut-off events. For 70621/70621 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15140 event pairs, 505 based on Foata normal form. 2/3006 useless extension candidates. Maximal degree in co-relation 18197. Up to 2652 conditions per place. [2024-06-28 03:21:44,012 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 119 selfloop transitions, 60 changer transitions 0/185 dead transitions. [2024-06-28 03:21:44,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 185 transitions, 1855 flow [2024-06-28 03:21:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:21:44,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-28 03:21:44,014 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 1254 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:21:44,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 185 transitions, 1855 flow [2024-06-28 03:21:44,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 185 transitions, 1779 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:44,057 INFO L231 Difference]: Finished difference. Result has 116 places, 156 transitions, 1469 flow [2024-06-28 03:21:44,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=116, PETRI_TRANSITIONS=156} [2024-06-28 03:21:44,058 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-28 03:21:44,058 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 156 transitions, 1469 flow [2024-06-28 03:21:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:44,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:44,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:44,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:21:44,059 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)] === [2024-06-28 03:21:44,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2071163604, now seen corresponding path program 1 times [2024-06-28 03:21:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981889547] [2024-06-28 03:21:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981889547] [2024-06-28 03:21:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981889547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:44,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859022269] [2024-06-28 03:21:44,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:45,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:45,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 156 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:45,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:45,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:45,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:45,681 INFO L124 PetriNetUnfolderBase]: 1952/3033 cut-off events. [2024-06-28 03:21:45,681 INFO L125 PetriNetUnfolderBase]: For 76614/76614 co-relation queries the response was YES. [2024-06-28 03:21:45,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18660 conditions, 3033 events. 1952/3033 cut-off events. For 76614/76614 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 15327 event pairs, 506 based on Foata normal form. 4/3035 useless extension candidates. Maximal degree in co-relation 18614. Up to 2772 conditions per place. [2024-06-28 03:21:45,699 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 148 selfloop transitions, 33 changer transitions 0/187 dead transitions. [2024-06-28 03:21:45,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 187 transitions, 1961 flow [2024-06-28 03:21:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:21:45,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:21:45,701 INFO L175 Difference]: Start difference. First operand has 116 places, 156 transitions, 1469 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:21:45,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 187 transitions, 1961 flow [2024-06-28 03:21:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 187 transitions, 1793 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:45,752 INFO L231 Difference]: Finished difference. Result has 119 places, 158 transitions, 1422 flow [2024-06-28 03:21:45,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1422, PETRI_PLACES=119, PETRI_TRANSITIONS=158} [2024-06-28 03:21:45,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-28 03:21:45,752 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 158 transitions, 1422 flow [2024-06-28 03:21:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:45,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:21:45,753 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)] === [2024-06-28 03:21:45,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2071343342, now seen corresponding path program 4 times [2024-06-28 03:21:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492931336] [2024-06-28 03:21:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492931336] [2024-06-28 03:21:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492931336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969770902] [2024-06-28 03:21:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:47,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:47,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:47,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 158 transitions, 1422 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:47,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:47,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:47,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:47,995 INFO L124 PetriNetUnfolderBase]: 1947/3026 cut-off events. [2024-06-28 03:21:47,995 INFO L125 PetriNetUnfolderBase]: For 80865/80865 co-relation queries the response was YES. [2024-06-28 03:21:48,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18821 conditions, 3026 events. 1947/3026 cut-off events. For 80865/80865 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15293 event pairs, 508 based on Foata normal form. 2/3026 useless extension candidates. Maximal degree in co-relation 18774. Up to 2672 conditions per place. [2024-06-28 03:21:48,018 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 122 selfloop transitions, 59 changer transitions 0/187 dead transitions. [2024-06-28 03:21:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 187 transitions, 1872 flow [2024-06-28 03:21:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:21:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:21:48,020 INFO L175 Difference]: Start difference. First operand has 119 places, 158 transitions, 1422 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:21:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 187 transitions, 1872 flow [2024-06-28 03:21:48,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 187 transitions, 1727 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:48,088 INFO L231 Difference]: Finished difference. Result has 121 places, 158 transitions, 1405 flow [2024-06-28 03:21:48,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1405, PETRI_PLACES=121, PETRI_TRANSITIONS=158} [2024-06-28 03:21:48,093 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-28 03:21:48,094 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 158 transitions, 1405 flow [2024-06-28 03:21:48,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:48,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:48,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:48,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:21:48,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:48,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 868417852, now seen corresponding path program 1 times [2024-06-28 03:21:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249793948] [2024-06-28 03:21:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249793948] [2024-06-28 03:21:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249793948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:48,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:48,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660471258] [2024-06-28 03:21:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:48,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:48,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:48,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:48,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 158 transitions, 1405 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:48,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:48,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:49,481 INFO L124 PetriNetUnfolderBase]: 1985/3070 cut-off events. [2024-06-28 03:21:49,482 INFO L125 PetriNetUnfolderBase]: For 85706/85706 co-relation queries the response was YES. [2024-06-28 03:21:49,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19252 conditions, 3070 events. 1985/3070 cut-off events. For 85706/85706 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 15323 event pairs, 515 based on Foata normal form. 2/3070 useless extension candidates. Maximal degree in co-relation 19204. Up to 2840 conditions per place. [2024-06-28 03:21:49,500 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 152 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-06-28 03:21:49,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 181 transitions, 1927 flow [2024-06-28 03:21:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:21:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:21:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 03:21:49,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:21:49,501 INFO L175 Difference]: Start difference. First operand has 121 places, 158 transitions, 1405 flow. Second operand 6 states and 117 transitions. [2024-06-28 03:21:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 181 transitions, 1927 flow [2024-06-28 03:21:49,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 181 transitions, 1745 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:49,549 INFO L231 Difference]: Finished difference. Result has 118 places, 164 transitions, 1348 flow [2024-06-28 03:21:49,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1348, PETRI_PLACES=118, PETRI_TRANSITIONS=164} [2024-06-28 03:21:49,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-28 03:21:49,550 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 164 transitions, 1348 flow [2024-06-28 03:21:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:49,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:49,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:49,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:21:49,550 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)] === [2024-06-28 03:21:49,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1962059500, now seen corresponding path program 4 times [2024-06-28 03:21:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285858840] [2024-06-28 03:21:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:50,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285858840] [2024-06-28 03:21:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285858840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:50,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:50,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132574479] [2024-06-28 03:21:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:50,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:50,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:21:50,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 164 transitions, 1348 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:50,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:50,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:21:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:51,090 INFO L124 PetriNetUnfolderBase]: 1837/2906 cut-off events. [2024-06-28 03:21:51,090 INFO L125 PetriNetUnfolderBase]: For 91782/91784 co-relation queries the response was YES. [2024-06-28 03:21:51,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18851 conditions, 2906 events. 1837/2906 cut-off events. For 91782/91784 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15061 event pairs, 482 based on Foata normal form. 10/2906 useless extension candidates. Maximal degree in co-relation 18803. Up to 2500 conditions per place. [2024-06-28 03:21:51,110 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 112 selfloop transitions, 65 changer transitions 0/189 dead transitions. [2024-06-28 03:21:51,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 189 transitions, 1828 flow [2024-06-28 03:21:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:21:51,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 03:21:51,113 INFO L175 Difference]: Start difference. First operand has 118 places, 164 transitions, 1348 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:21:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 189 transitions, 1828 flow [2024-06-28 03:21:51,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 189 transitions, 1793 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 03:21:51,179 INFO L231 Difference]: Finished difference. Result has 124 places, 166 transitions, 1512 flow [2024-06-28 03:21:51,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1512, PETRI_PLACES=124, PETRI_TRANSITIONS=166} [2024-06-28 03:21:51,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-28 03:21:51,179 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 166 transitions, 1512 flow [2024-06-28 03:21:51,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:51,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:51,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:51,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:21:51,180 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)] === [2024-06-28 03:21:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1968500060, now seen corresponding path program 5 times [2024-06-28 03:21:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:51,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593757816] [2024-06-28 03:21:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593757816] [2024-06-28 03:21:52,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593757816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:52,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:52,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708341928] [2024-06-28 03:21:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:52,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:52,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 166 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:52,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:52,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:52,858 INFO L124 PetriNetUnfolderBase]: 2007/3111 cut-off events. [2024-06-28 03:21:52,858 INFO L125 PetriNetUnfolderBase]: For 99099/99099 co-relation queries the response was YES. [2024-06-28 03:21:52,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20218 conditions, 3111 events. 2007/3111 cut-off events. For 99099/99099 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15648 event pairs, 521 based on Foata normal form. 2/3109 useless extension candidates. Maximal degree in co-relation 20168. Up to 2656 conditions per place. [2024-06-28 03:21:52,878 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 118 selfloop transitions, 83 changer transitions 0/207 dead transitions. [2024-06-28 03:21:52,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 207 transitions, 2290 flow [2024-06-28 03:21:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:21:52,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 03:21:52,880 INFO L175 Difference]: Start difference. First operand has 124 places, 166 transitions, 1512 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:21:52,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 207 transitions, 2290 flow [2024-06-28 03:21:52,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 207 transitions, 2087 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:52,951 INFO L231 Difference]: Finished difference. Result has 128 places, 178 transitions, 1709 flow [2024-06-28 03:21:52,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=128, PETRI_TRANSITIONS=178} [2024-06-28 03:21:52,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 03:21:52,952 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 178 transitions, 1709 flow [2024-06-28 03:21:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:52,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:52,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:21:52,952 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)] === [2024-06-28 03:21:52,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1076318844, now seen corresponding path program 6 times [2024-06-28 03:21:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636133007] [2024-06-28 03:21:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:54,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636133007] [2024-06-28 03:21:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636133007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:54,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:54,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098897733] [2024-06-28 03:21:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:54,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:54,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 178 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:54,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:54,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:54,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:54,945 INFO L124 PetriNetUnfolderBase]: 2002/3106 cut-off events. [2024-06-28 03:21:54,945 INFO L125 PetriNetUnfolderBase]: For 105043/105045 co-relation queries the response was YES. [2024-06-28 03:21:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 3106 events. 2002/3106 cut-off events. For 105043/105045 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15644 event pairs, 515 based on Foata normal form. 4/3106 useless extension candidates. Maximal degree in co-relation 20635. Up to 2711 conditions per place. [2024-06-28 03:21:54,964 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 125 selfloop transitions, 73 changer transitions 0/204 dead transitions. [2024-06-28 03:21:54,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 2183 flow [2024-06-28 03:21:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:21:54,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-28 03:21:54,966 INFO L175 Difference]: Start difference. First operand has 128 places, 178 transitions, 1709 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:21:54,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 2183 flow [2024-06-28 03:21:55,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 204 transitions, 2002 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:55,050 INFO L231 Difference]: Finished difference. Result has 134 places, 178 transitions, 1682 flow [2024-06-28 03:21:55,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=134, PETRI_TRANSITIONS=178} [2024-06-28 03:21:55,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 03:21:55,050 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 178 transitions, 1682 flow [2024-06-28 03:21:55,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:55,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:55,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:21:55,051 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:55,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1070069244, now seen corresponding path program 7 times [2024-06-28 03:21:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752131754] [2024-06-28 03:21:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752131754] [2024-06-28 03:21:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752131754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:56,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919653903] [2024-06-28 03:21:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:56,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:56,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 178 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:56,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:56,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:56,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:56,803 INFO L124 PetriNetUnfolderBase]: 2029/3143 cut-off events. [2024-06-28 03:21:56,803 INFO L125 PetriNetUnfolderBase]: For 111632/111632 co-relation queries the response was YES. [2024-06-28 03:21:56,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20903 conditions, 3143 events. 2029/3143 cut-off events. For 111632/111632 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15823 event pairs, 521 based on Foata normal form. 2/3141 useless extension candidates. Maximal degree in co-relation 20850. Up to 2688 conditions per place. [2024-06-28 03:21:56,824 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 127 selfloop transitions, 80 changer transitions 0/213 dead transitions. [2024-06-28 03:21:56,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 213 transitions, 2448 flow [2024-06-28 03:21:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:21:56,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 03:21:56,825 INFO L175 Difference]: Start difference. First operand has 134 places, 178 transitions, 1682 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:21:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 213 transitions, 2448 flow [2024-06-28 03:21:56,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 213 transitions, 2280 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:56,908 INFO L231 Difference]: Finished difference. Result has 135 places, 184 transitions, 1848 flow [2024-06-28 03:21:56,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1848, PETRI_PLACES=135, PETRI_TRANSITIONS=184} [2024-06-28 03:21:56,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-28 03:21:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 184 transitions, 1848 flow [2024-06-28 03:21:56,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:56,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:56,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:21:56,910 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)] === [2024-06-28 03:21:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1239289276, now seen corresponding path program 8 times [2024-06-28 03:21:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699111578] [2024-06-28 03:21:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699111578] [2024-06-28 03:21:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699111578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:58,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:58,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:58,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710559487] [2024-06-28 03:21:58,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:58,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:58,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:58,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:21:58,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 184 transitions, 1848 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:58,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:58,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:21:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:58,903 INFO L124 PetriNetUnfolderBase]: 2051/3182 cut-off events. [2024-06-28 03:21:58,903 INFO L125 PetriNetUnfolderBase]: For 121159/121161 co-relation queries the response was YES. [2024-06-28 03:21:58,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21663 conditions, 3182 events. 2051/3182 cut-off events. For 121159/121161 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16083 event pairs, 520 based on Foata normal form. 4/3182 useless extension candidates. Maximal degree in co-relation 21609. Up to 2778 conditions per place. [2024-06-28 03:21:58,925 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 135 selfloop transitions, 75 changer transitions 0/216 dead transitions. [2024-06-28 03:21:58,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 2458 flow [2024-06-28 03:21:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:21:58,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-28 03:21:58,927 INFO L175 Difference]: Start difference. First operand has 135 places, 184 transitions, 1848 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:21:58,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 2458 flow [2024-06-28 03:21:59,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 216 transitions, 2234 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:21:59,009 INFO L231 Difference]: Finished difference. Result has 139 places, 190 transitions, 1900 flow [2024-06-28 03:21:59,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1900, PETRI_PLACES=139, PETRI_TRANSITIONS=190} [2024-06-28 03:21:59,010 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 96 predicate places. [2024-06-28 03:21:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 190 transitions, 1900 flow [2024-06-28 03:21:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:21:59,010 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)] === [2024-06-28 03:21:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1002637508, now seen corresponding path program 2 times [2024-06-28 03:21:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461196263] [2024-06-28 03:21:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:59,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461196263] [2024-06-28 03:21:59,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461196263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:59,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:59,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321798975] [2024-06-28 03:21:59,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:59,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:59,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:59,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:00,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:00,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 190 transitions, 1900 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:00,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:00,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:00,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:00,608 INFO L124 PetriNetUnfolderBase]: 2068/3209 cut-off events. [2024-06-28 03:22:00,609 INFO L125 PetriNetUnfolderBase]: For 128400/128402 co-relation queries the response was YES. [2024-06-28 03:22:00,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22030 conditions, 3209 events. 2068/3209 cut-off events. For 128400/128402 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16268 event pairs, 477 based on Foata normal form. 6/3211 useless extension candidates. Maximal degree in co-relation 21975. Up to 2773 conditions per place. [2024-06-28 03:22:00,627 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 157 selfloop transitions, 61 changer transitions 0/224 dead transitions. [2024-06-28 03:22:00,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 224 transitions, 2640 flow [2024-06-28 03:22:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:22:00,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:22:00,629 INFO L175 Difference]: Start difference. First operand has 139 places, 190 transitions, 1900 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:22:00,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 224 transitions, 2640 flow [2024-06-28 03:22:00,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 224 transitions, 2420 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:00,739 INFO L231 Difference]: Finished difference. Result has 141 places, 194 transitions, 1917 flow [2024-06-28 03:22:00,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1917, PETRI_PLACES=141, PETRI_TRANSITIONS=194} [2024-06-28 03:22:00,740 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 03:22:00,740 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 194 transitions, 1917 flow [2024-06-28 03:22:00,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:00,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:00,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:00,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:22:00,741 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)] === [2024-06-28 03:22:00,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1239116296, now seen corresponding path program 9 times [2024-06-28 03:22:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868554316] [2024-06-28 03:22:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:00,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868554316] [2024-06-28 03:22:01,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868554316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:01,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:01,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:01,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162571863] [2024-06-28 03:22:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:01,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:01,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:01,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 194 transitions, 1917 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:01,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:01,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:02,430 INFO L124 PetriNetUnfolderBase]: 2063/3202 cut-off events. [2024-06-28 03:22:02,430 INFO L125 PetriNetUnfolderBase]: For 133599/133601 co-relation queries the response was YES. [2024-06-28 03:22:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22169 conditions, 3202 events. 2063/3202 cut-off events. For 133599/133601 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16185 event pairs, 520 based on Foata normal form. 4/3202 useless extension candidates. Maximal degree in co-relation 22114. Up to 2798 conditions per place. [2024-06-28 03:22:02,453 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 140 selfloop transitions, 74 changer transitions 0/220 dead transitions. [2024-06-28 03:22:02,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 220 transitions, 2423 flow [2024-06-28 03:22:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:22:02,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:22:02,455 INFO L175 Difference]: Start difference. First operand has 141 places, 194 transitions, 1917 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:22:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 220 transitions, 2423 flow [2024-06-28 03:22:02,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 2242 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:02,573 INFO L231 Difference]: Finished difference. Result has 145 places, 194 transitions, 1892 flow [2024-06-28 03:22:02,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1892, PETRI_PLACES=145, PETRI_TRANSITIONS=194} [2024-06-28 03:22:02,574 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-28 03:22:02,574 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 194 transitions, 1892 flow [2024-06-28 03:22:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:02,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:02,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:02,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:22:02,574 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)] === [2024-06-28 03:22:02,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1002934426, now seen corresponding path program 10 times [2024-06-28 03:22:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616366763] [2024-06-28 03:22:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616366763] [2024-06-28 03:22:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616366763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:03,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:03,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936933071] [2024-06-28 03:22:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:03,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:03,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:03,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 194 transitions, 1892 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:03,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:03,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:03,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:04,184 INFO L124 PetriNetUnfolderBase]: 2058/3193 cut-off events. [2024-06-28 03:22:04,184 INFO L125 PetriNetUnfolderBase]: For 139151/139151 co-relation queries the response was YES. [2024-06-28 03:22:04,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22232 conditions, 3193 events. 2058/3193 cut-off events. For 139151/139151 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16170 event pairs, 526 based on Foata normal form. 2/3191 useless extension candidates. Maximal degree in co-relation 22175. Up to 2599 conditions per place. [2024-06-28 03:22:04,207 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 100 selfloop transitions, 118 changer transitions 0/224 dead transitions. [2024-06-28 03:22:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 224 transitions, 2498 flow [2024-06-28 03:22:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:22:04,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-28 03:22:04,209 INFO L175 Difference]: Start difference. First operand has 145 places, 194 transitions, 1892 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:22:04,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 224 transitions, 2498 flow [2024-06-28 03:22:04,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 224 transitions, 2326 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:04,308 INFO L231 Difference]: Finished difference. Result has 146 places, 197 transitions, 2058 flow [2024-06-28 03:22:04,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2058, PETRI_PLACES=146, PETRI_TRANSITIONS=197} [2024-06-28 03:22:04,309 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-28 03:22:04,309 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 197 transitions, 2058 flow [2024-06-28 03:22:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:04,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:22:04,310 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)] === [2024-06-28 03:22:04,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 884677932, now seen corresponding path program 3 times [2024-06-28 03:22:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868815216] [2024-06-28 03:22:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:05,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868815216] [2024-06-28 03:22:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868815216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:05,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:05,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137520324] [2024-06-28 03:22:05,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:05,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:05,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:05,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:05,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 197 transitions, 2058 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:05,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:05,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:05,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:05,817 INFO L124 PetriNetUnfolderBase]: 2075/3222 cut-off events. [2024-06-28 03:22:05,817 INFO L125 PetriNetUnfolderBase]: For 150115/150117 co-relation queries the response was YES. [2024-06-28 03:22:05,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23042 conditions, 3222 events. 2075/3222 cut-off events. For 150115/150117 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16396 event pairs, 515 based on Foata normal form. 6/3224 useless extension candidates. Maximal degree in co-relation 22984. Up to 2861 conditions per place. [2024-06-28 03:22:05,842 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 164 selfloop transitions, 56 changer transitions 0/226 dead transitions. [2024-06-28 03:22:05,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 226 transitions, 2624 flow [2024-06-28 03:22:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:22:05,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:22:05,844 INFO L175 Difference]: Start difference. First operand has 146 places, 197 transitions, 2058 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:22:05,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 226 transitions, 2624 flow [2024-06-28 03:22:05,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 226 transitions, 2310 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:05,936 INFO L231 Difference]: Finished difference. Result has 148 places, 199 transitions, 1913 flow [2024-06-28 03:22:05,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1913, PETRI_PLACES=148, PETRI_TRANSITIONS=199} [2024-06-28 03:22:05,937 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-28 03:22:05,937 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 199 transitions, 1913 flow [2024-06-28 03:22:05,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:05,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:05,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:05,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:22:05,938 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)] === [2024-06-28 03:22:05,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 648502572, now seen corresponding path program 4 times [2024-06-28 03:22:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577412783] [2024-06-28 03:22:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577412783] [2024-06-28 03:22:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577412783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625395818] [2024-06-28 03:22:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:06,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:06,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:06,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 199 transitions, 1913 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:06,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:06,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:06,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:07,467 INFO L124 PetriNetUnfolderBase]: 2092/3249 cut-off events. [2024-06-28 03:22:07,467 INFO L125 PetriNetUnfolderBase]: For 157280/157282 co-relation queries the response was YES. [2024-06-28 03:22:07,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23128 conditions, 3249 events. 2092/3249 cut-off events. For 157280/157282 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16504 event pairs, 520 based on Foata normal form. 6/3251 useless extension candidates. Maximal degree in co-relation 23069. Up to 2932 conditions per place. [2024-06-28 03:22:07,491 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 178 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-28 03:22:07,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 228 transitions, 2487 flow [2024-06-28 03:22:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:22:07,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:22:07,493 INFO L175 Difference]: Start difference. First operand has 148 places, 199 transitions, 1913 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:22:07,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 228 transitions, 2487 flow [2024-06-28 03:22:07,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 228 transitions, 2340 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:07,627 INFO L231 Difference]: Finished difference. Result has 150 places, 201 transitions, 1915 flow [2024-06-28 03:22:07,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1915, PETRI_PLACES=150, PETRI_TRANSITIONS=201} [2024-06-28 03:22:07,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-28 03:22:07,628 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 201 transitions, 1915 flow [2024-06-28 03:22:07,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:07,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:22:07,628 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)] === [2024-06-28 03:22:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 876403722, now seen corresponding path program 5 times [2024-06-28 03:22:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013658949] [2024-06-28 03:22:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:07,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013658949] [2024-06-28 03:22:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013658949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:08,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940407071] [2024-06-28 03:22:08,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:08,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:08,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:08,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 201 transitions, 1915 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:08,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:08,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:09,320 INFO L124 PetriNetUnfolderBase]: 2084/3237 cut-off events. [2024-06-28 03:22:09,320 INFO L125 PetriNetUnfolderBase]: For 162325/162327 co-relation queries the response was YES. [2024-06-28 03:22:09,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23042 conditions, 3237 events. 2084/3237 cut-off events. For 162325/162327 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16442 event pairs, 518 based on Foata normal form. 6/3239 useless extension candidates. Maximal degree in co-relation 22982. Up to 2920 conditions per place. [2024-06-28 03:22:09,342 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 177 selfloop transitions, 45 changer transitions 0/228 dead transitions. [2024-06-28 03:22:09,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 228 transitions, 2439 flow [2024-06-28 03:22:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:22:09,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:22:09,344 INFO L175 Difference]: Start difference. First operand has 150 places, 201 transitions, 1915 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:22:09,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 228 transitions, 2439 flow [2024-06-28 03:22:09,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 228 transitions, 2280 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:09,452 INFO L231 Difference]: Finished difference. Result has 152 places, 201 transitions, 1853 flow [2024-06-28 03:22:09,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1853, PETRI_PLACES=152, PETRI_TRANSITIONS=201} [2024-06-28 03:22:09,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-28 03:22:09,453 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 201 transitions, 1853 flow [2024-06-28 03:22:09,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:09,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:09,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:22:09,454 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:09,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash 879845692, now seen corresponding path program 2 times [2024-06-28 03:22:09,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:09,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996267820] [2024-06-28 03:22:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996267820] [2024-06-28 03:22:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996267820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:22:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195759226] [2024-06-28 03:22:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:22:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:22:10,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:22:10,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:10,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 201 transitions, 1853 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:10,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:10,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:10,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:10,774 INFO L124 PetriNetUnfolderBase]: 2078/3227 cut-off events. [2024-06-28 03:22:10,775 INFO L125 PetriNetUnfolderBase]: For 166189/166189 co-relation queries the response was YES. [2024-06-28 03:22:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23022 conditions, 3227 events. 2078/3227 cut-off events. For 166189/166189 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16379 event pairs, 523 based on Foata normal form. 2/3225 useless extension candidates. Maximal degree in co-relation 22961. Up to 2985 conditions per place. [2024-06-28 03:22:10,881 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 184 selfloop transitions, 22 changer transitions 0/212 dead transitions. [2024-06-28 03:22:10,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 212 transitions, 2307 flow [2024-06-28 03:22:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:22:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:22:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:22:10,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:22:10,899 INFO L175 Difference]: Start difference. First operand has 152 places, 201 transitions, 1853 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:22:10,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 212 transitions, 2307 flow [2024-06-28 03:22:11,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 212 transitions, 2171 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:11,027 INFO L231 Difference]: Finished difference. Result has 150 places, 201 transitions, 1767 flow [2024-06-28 03:22:11,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1767, PETRI_PLACES=150, PETRI_TRANSITIONS=201} [2024-06-28 03:22:11,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-28 03:22:11,028 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 201 transitions, 1767 flow [2024-06-28 03:22:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:11,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:22:11,029 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:11,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1405106918, now seen corresponding path program 1 times [2024-06-28 03:22:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175244555] [2024-06-28 03:22:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175244555] [2024-06-28 03:22:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175244555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:11,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:22:11,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257349097] [2024-06-28 03:22:11,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:11,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:22:11,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:22:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:22:11,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:22:11,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 201 transitions, 1767 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:11,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:22:11,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:12,111 INFO L124 PetriNetUnfolderBase]: 1876/3004 cut-off events. [2024-06-28 03:22:12,112 INFO L125 PetriNetUnfolderBase]: For 148608/148608 co-relation queries the response was YES. [2024-06-28 03:22:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20690 conditions, 3004 events. 1876/3004 cut-off events. For 148608/148608 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15689 event pairs, 467 based on Foata normal form. 1/3003 useless extension candidates. Maximal degree in co-relation 20628. Up to 2743 conditions per place. [2024-06-28 03:22:12,135 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 194 selfloop transitions, 18 changer transitions 0/219 dead transitions. [2024-06-28 03:22:12,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 219 transitions, 2347 flow [2024-06-28 03:22:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:22:12,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 03:22:12,136 INFO L175 Difference]: Start difference. First operand has 150 places, 201 transitions, 1767 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:22:12,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 219 transitions, 2347 flow [2024-06-28 03:22:12,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 219 transitions, 2286 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:12,283 INFO L231 Difference]: Finished difference. Result has 152 places, 207 transitions, 1802 flow [2024-06-28 03:22:12,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1802, PETRI_PLACES=152, PETRI_TRANSITIONS=207} [2024-06-28 03:22:12,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-28 03:22:12,284 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 207 transitions, 1802 flow [2024-06-28 03:22:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:12,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:12,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:12,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:22:12,284 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:12,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1853930854, now seen corresponding path program 2 times [2024-06-28 03:22:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379926250] [2024-06-28 03:22:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379926250] [2024-06-28 03:22:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379926250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:12,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:22:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044375702] [2024-06-28 03:22:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:22:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:22:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:22:12,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:22:12,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 207 transitions, 1802 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:12,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:12,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:22:12,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:13,368 INFO L124 PetriNetUnfolderBase]: 1873/3000 cut-off events. [2024-06-28 03:22:13,369 INFO L125 PetriNetUnfolderBase]: For 155253/155253 co-relation queries the response was YES. [2024-06-28 03:22:13,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 3000 events. 1873/3000 cut-off events. For 155253/155253 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15688 event pairs, 466 based on Foata normal form. 1/2999 useless extension candidates. Maximal degree in co-relation 21018. Up to 2752 conditions per place. [2024-06-28 03:22:13,392 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 195 selfloop transitions, 13 changer transitions 0/215 dead transitions. [2024-06-28 03:22:13,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 215 transitions, 2240 flow [2024-06-28 03:22:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:22:13,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 03:22:13,393 INFO L175 Difference]: Start difference. First operand has 152 places, 207 transitions, 1802 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:22:13,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 215 transitions, 2240 flow [2024-06-28 03:22:13,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 215 transitions, 2194 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:22:13,563 INFO L231 Difference]: Finished difference. Result has 157 places, 207 transitions, 1788 flow [2024-06-28 03:22:13,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1788, PETRI_PLACES=157, PETRI_TRANSITIONS=207} [2024-06-28 03:22:13,564 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-28 03:22:13,564 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 207 transitions, 1788 flow [2024-06-28 03:22:13,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:13,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:13,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:22:13,564 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:13,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1821851000, now seen corresponding path program 1 times [2024-06-28 03:22:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099328104] [2024-06-28 03:22:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:13,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099328104] [2024-06-28 03:22:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099328104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:14,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189027004] [2024-06-28 03:22:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:14,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:14,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:14,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 207 transitions, 1788 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:14,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:14,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:14,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:15,011 INFO L124 PetriNetUnfolderBase]: 1983/3108 cut-off events. [2024-06-28 03:22:15,012 INFO L125 PetriNetUnfolderBase]: For 162184/162184 co-relation queries the response was YES. [2024-06-28 03:22:15,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21848 conditions, 3108 events. 1983/3108 cut-off events. For 162184/162184 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15798 event pairs, 502 based on Foata normal form. 2/3108 useless extension candidates. Maximal degree in co-relation 21783. Up to 2943 conditions per place. [2024-06-28 03:22:15,036 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 200 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-06-28 03:22:15,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 220 transitions, 2276 flow [2024-06-28 03:22:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 03:22:15,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 03:22:15,037 INFO L175 Difference]: Start difference. First operand has 157 places, 207 transitions, 1788 flow. Second operand 7 states and 121 transitions. [2024-06-28 03:22:15,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 220 transitions, 2276 flow [2024-06-28 03:22:15,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 220 transitions, 2235 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:15,179 INFO L231 Difference]: Finished difference. Result has 157 places, 210 transitions, 1821 flow [2024-06-28 03:22:15,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1821, PETRI_PLACES=157, PETRI_TRANSITIONS=210} [2024-06-28 03:22:15,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-28 03:22:15,179 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 210 transitions, 1821 flow [2024-06-28 03:22:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:15,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:15,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:22:15,180 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)] === [2024-06-28 03:22:15,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -218140560, now seen corresponding path program 1 times [2024-06-28 03:22:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013916785] [2024-06-28 03:22:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:16,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:16,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013916785] [2024-06-28 03:22:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013916785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:16,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:16,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831501092] [2024-06-28 03:22:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:16,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:16,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:16,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 210 transitions, 1821 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:16,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:16,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:16,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:17,300 INFO L124 PetriNetUnfolderBase]: 2132/3319 cut-off events. [2024-06-28 03:22:17,301 INFO L125 PetriNetUnfolderBase]: For 208128/208128 co-relation queries the response was YES. [2024-06-28 03:22:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24863 conditions, 3319 events. 2132/3319 cut-off events. For 208128/208128 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16932 event pairs, 515 based on Foata normal form. 16/3333 useless extension candidates. Maximal degree in co-relation 24798. Up to 2979 conditions per place. [2024-06-28 03:22:17,327 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 215 selfloop transitions, 29 changer transitions 0/250 dead transitions. [2024-06-28 03:22:17,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 250 transitions, 2513 flow [2024-06-28 03:22:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:17,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:22:17,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:22:17,328 INFO L175 Difference]: Start difference. First operand has 157 places, 210 transitions, 1821 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:22:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 250 transitions, 2513 flow [2024-06-28 03:22:17,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 250 transitions, 2461 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:17,520 INFO L231 Difference]: Finished difference. Result has 162 places, 211 transitions, 1886 flow [2024-06-28 03:22:17,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1886, PETRI_PLACES=162, PETRI_TRANSITIONS=211} [2024-06-28 03:22:17,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-28 03:22:17,521 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 211 transitions, 1886 flow [2024-06-28 03:22:17,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:17,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:17,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:17,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:22:17,521 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)] === [2024-06-28 03:22:17,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash -140026208, now seen corresponding path program 2 times [2024-06-28 03:22:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:17,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045217486] [2024-06-28 03:22:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:17,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045217486] [2024-06-28 03:22:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045217486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:18,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:18,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:18,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645314518] [2024-06-28 03:22:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:18,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:18,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:18,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:18,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:18,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:18,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 211 transitions, 1886 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:18,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:18,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:19,609 INFO L124 PetriNetUnfolderBase]: 2207/3444 cut-off events. [2024-06-28 03:22:19,610 INFO L125 PetriNetUnfolderBase]: For 222519/222519 co-relation queries the response was YES. [2024-06-28 03:22:19,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26017 conditions, 3444 events. 2207/3444 cut-off events. For 222519/222519 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17832 event pairs, 522 based on Foata normal form. 16/3458 useless extension candidates. Maximal degree in co-relation 25951. Up to 2987 conditions per place. [2024-06-28 03:22:19,638 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 57 changer transitions 0/250 dead transitions. [2024-06-28 03:22:19,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 250 transitions, 2578 flow [2024-06-28 03:22:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:22:19,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:22:19,640 INFO L175 Difference]: Start difference. First operand has 162 places, 211 transitions, 1886 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:22:19,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 250 transitions, 2578 flow [2024-06-28 03:22:19,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 250 transitions, 2503 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:19,808 INFO L231 Difference]: Finished difference. Result has 164 places, 213 transitions, 1996 flow [2024-06-28 03:22:19,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=164, PETRI_TRANSITIONS=213} [2024-06-28 03:22:19,808 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-28 03:22:19,808 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 213 transitions, 1996 flow [2024-06-28 03:22:19,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:19,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:19,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:22:19,809 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)] === [2024-06-28 03:22:19,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -139824398, now seen corresponding path program 3 times [2024-06-28 03:22:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238084317] [2024-06-28 03:22:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:20,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238084317] [2024-06-28 03:22:20,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238084317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:20,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:20,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239252035] [2024-06-28 03:22:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:21,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:21,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 213 transitions, 1996 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:21,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:21,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:21,768 INFO L124 PetriNetUnfolderBase]: 2265/3552 cut-off events. [2024-06-28 03:22:21,768 INFO L125 PetriNetUnfolderBase]: For 235831/235831 co-relation queries the response was YES. [2024-06-28 03:22:21,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27096 conditions, 3552 events. 2265/3552 cut-off events. For 235831/235831 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18643 event pairs, 542 based on Foata normal form. 16/3566 useless extension candidates. Maximal degree in co-relation 27029. Up to 3027 conditions per place. [2024-06-28 03:22:21,793 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 173 selfloop transitions, 72 changer transitions 0/251 dead transitions. [2024-06-28 03:22:21,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 251 transitions, 2688 flow [2024-06-28 03:22:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:22:21,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:22:21,795 INFO L175 Difference]: Start difference. First operand has 164 places, 213 transitions, 1996 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:22:21,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 251 transitions, 2688 flow [2024-06-28 03:22:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 251 transitions, 2557 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:21,973 INFO L231 Difference]: Finished difference. Result has 166 places, 214 transitions, 2072 flow [2024-06-28 03:22:21,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2072, PETRI_PLACES=166, PETRI_TRANSITIONS=214} [2024-06-28 03:22:21,973 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 123 predicate places. [2024-06-28 03:22:21,973 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 214 transitions, 2072 flow [2024-06-28 03:22:21,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:21,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:21,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:22:21,974 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:21,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash -139816958, now seen corresponding path program 4 times [2024-06-28 03:22:21,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:21,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426351373] [2024-06-28 03:22:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426351373] [2024-06-28 03:22:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426351373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986721139] [2024-06-28 03:22:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:23,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:23,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 214 transitions, 2072 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:23,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:23,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:23,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:23,972 INFO L124 PetriNetUnfolderBase]: 2433/3836 cut-off events. [2024-06-28 03:22:23,973 INFO L125 PetriNetUnfolderBase]: For 264758/264758 co-relation queries the response was YES. [2024-06-28 03:22:23,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30170 conditions, 3836 events. 2433/3836 cut-off events. For 264758/264758 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20756 event pairs, 569 based on Foata normal form. 12/3846 useless extension candidates. Maximal degree in co-relation 30102. Up to 2912 conditions per place. [2024-06-28 03:22:24,005 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 176 selfloop transitions, 77 changer transitions 0/259 dead transitions. [2024-06-28 03:22:24,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 259 transitions, 3062 flow [2024-06-28 03:22:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:22:24,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-28 03:22:24,006 INFO L175 Difference]: Start difference. First operand has 166 places, 214 transitions, 2072 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:22:24,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 259 transitions, 3062 flow [2024-06-28 03:22:24,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 259 transitions, 2897 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:24,235 INFO L231 Difference]: Finished difference. Result has 169 places, 217 transitions, 2232 flow [2024-06-28 03:22:24,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2232, PETRI_PLACES=169, PETRI_TRANSITIONS=217} [2024-06-28 03:22:24,236 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-28 03:22:24,236 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 217 transitions, 2232 flow [2024-06-28 03:22:24,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:24,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:24,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:22:24,237 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)] === [2024-06-28 03:22:24,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash -145388588, now seen corresponding path program 5 times [2024-06-28 03:22:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391466627] [2024-06-28 03:22:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391466627] [2024-06-28 03:22:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391466627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:25,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:25,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951601149] [2024-06-28 03:22:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:25,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:25,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:25,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 217 transitions, 2232 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:25,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:25,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:26,625 INFO L124 PetriNetUnfolderBase]: 2560/4048 cut-off events. [2024-06-28 03:22:26,626 INFO L125 PetriNetUnfolderBase]: For 297409/297409 co-relation queries the response was YES. [2024-06-28 03:22:26,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32054 conditions, 4048 events. 2560/4048 cut-off events. For 297409/297409 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22311 event pairs, 619 based on Foata normal form. 28/4073 useless extension candidates. Maximal degree in co-relation 31984. Up to 3577 conditions per place. [2024-06-28 03:22:26,657 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 208 selfloop transitions, 48 changer transitions 0/262 dead transitions. [2024-06-28 03:22:26,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 262 transitions, 3065 flow [2024-06-28 03:22:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 03:22:26,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-28 03:22:26,663 INFO L175 Difference]: Start difference. First operand has 169 places, 217 transitions, 2232 flow. Second operand 11 states and 200 transitions. [2024-06-28 03:22:26,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 262 transitions, 3065 flow [2024-06-28 03:22:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 262 transitions, 2934 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:26,874 INFO L231 Difference]: Finished difference. Result has 177 places, 226 transitions, 2425 flow [2024-06-28 03:22:26,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2425, PETRI_PLACES=177, PETRI_TRANSITIONS=226} [2024-06-28 03:22:26,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-28 03:22:26,876 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 226 transitions, 2425 flow [2024-06-28 03:22:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:26,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:26,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:22:26,877 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:26,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1336275206, now seen corresponding path program 1 times [2024-06-28 03:22:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897912114] [2024-06-28 03:22:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897912114] [2024-06-28 03:22:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897912114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:27,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:27,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403206525] [2024-06-28 03:22:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:27,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:27,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:27,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:27,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:22:27,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 226 transitions, 2425 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:27,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:27,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:22:27,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:28,511 INFO L124 PetriNetUnfolderBase]: 2683/4177 cut-off events. [2024-06-28 03:22:28,511 INFO L125 PetriNetUnfolderBase]: For 284245/284245 co-relation queries the response was YES. [2024-06-28 03:22:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33165 conditions, 4177 events. 2683/4177 cut-off events. For 284245/284245 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22647 event pairs, 661 based on Foata normal form. 2/4177 useless extension candidates. Maximal degree in co-relation 33090. Up to 3988 conditions per place. [2024-06-28 03:22:28,543 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 217 selfloop transitions, 30 changer transitions 0/251 dead transitions. [2024-06-28 03:22:28,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 251 transitions, 3167 flow [2024-06-28 03:22:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:22:28,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 03:22:28,544 INFO L175 Difference]: Start difference. First operand has 177 places, 226 transitions, 2425 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:22:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 251 transitions, 3167 flow [2024-06-28 03:22:28,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 251 transitions, 3039 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:28,828 INFO L231 Difference]: Finished difference. Result has 178 places, 232 transitions, 2457 flow [2024-06-28 03:22:28,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2457, PETRI_PLACES=178, PETRI_TRANSITIONS=232} [2024-06-28 03:22:28,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 03:22:28,829 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 232 transitions, 2457 flow [2024-06-28 03:22:28,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:28,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:28,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:28,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:22:28,829 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)] === [2024-06-28 03:22:28,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:28,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1376827472, now seen corresponding path program 6 times [2024-06-28 03:22:28,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:28,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193965079] [2024-06-28 03:22:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:28,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193965079] [2024-06-28 03:22:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193965079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:30,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:30,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237496122] [2024-06-28 03:22:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:30,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:30,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:30,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 232 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:31,198 INFO L124 PetriNetUnfolderBase]: 2655/4200 cut-off events. [2024-06-28 03:22:31,199 INFO L125 PetriNetUnfolderBase]: For 309276/309278 co-relation queries the response was YES. [2024-06-28 03:22:31,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33786 conditions, 4200 events. 2655/4200 cut-off events. For 309276/309278 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23413 event pairs, 642 based on Foata normal form. 18/4215 useless extension candidates. Maximal degree in co-relation 33710. Up to 3663 conditions per place. [2024-06-28 03:22:31,235 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 184 selfloop transitions, 77 changer transitions 0/269 dead transitions. [2024-06-28 03:22:31,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 269 transitions, 3187 flow [2024-06-28 03:22:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:22:31,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:22:31,237 INFO L175 Difference]: Start difference. First operand has 178 places, 232 transitions, 2457 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:22:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 269 transitions, 3187 flow [2024-06-28 03:22:31,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 269 transitions, 3131 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:22:31,560 INFO L231 Difference]: Finished difference. Result has 185 places, 234 transitions, 2632 flow [2024-06-28 03:22:31,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=185, PETRI_TRANSITIONS=234} [2024-06-28 03:22:31,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-28 03:22:31,561 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 234 transitions, 2632 flow [2024-06-28 03:22:31,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:31,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:31,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:31,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:22:31,561 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)] === [2024-06-28 03:22:31,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1371465092, now seen corresponding path program 7 times [2024-06-28 03:22:31,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:31,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307718770] [2024-06-28 03:22:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:31,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:32,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307718770] [2024-06-28 03:22:32,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307718770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:32,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:32,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753158985] [2024-06-28 03:22:32,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:32,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:32,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:32,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 234 transitions, 2632 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:32,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:32,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:32,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:33,782 INFO L124 PetriNetUnfolderBase]: 2730/4325 cut-off events. [2024-06-28 03:22:33,782 INFO L125 PetriNetUnfolderBase]: For 328521/328523 co-relation queries the response was YES. [2024-06-28 03:22:33,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35281 conditions, 4325 events. 2730/4325 cut-off events. For 328521/328523 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24412 event pairs, 652 based on Foata normal form. 18/4340 useless extension candidates. Maximal degree in co-relation 35203. Up to 3788 conditions per place. [2024-06-28 03:22:33,818 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 76 changer transitions 0/271 dead transitions. [2024-06-28 03:22:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 271 transitions, 3370 flow [2024-06-28 03:22:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:22:33,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-28 03:22:33,832 INFO L175 Difference]: Start difference. First operand has 185 places, 234 transitions, 2632 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:22:33,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 271 transitions, 3370 flow [2024-06-28 03:22:34,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 271 transitions, 3193 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:34,288 INFO L231 Difference]: Finished difference. Result has 187 places, 236 transitions, 2688 flow [2024-06-28 03:22:34,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2688, PETRI_PLACES=187, PETRI_TRANSITIONS=236} [2024-06-28 03:22:34,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 03:22:34,289 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 236 transitions, 2688 flow [2024-06-28 03:22:34,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:34,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:34,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:22:34,290 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)] === [2024-06-28 03:22:34,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1371263282, now seen corresponding path program 8 times [2024-06-28 03:22:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:34,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638279287] [2024-06-28 03:22:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:35,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638279287] [2024-06-28 03:22:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638279287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:35,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:35,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600908326] [2024-06-28 03:22:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:35,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:35,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:35,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 236 transitions, 2688 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:35,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:35,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:35,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:36,712 INFO L124 PetriNetUnfolderBase]: 2788/4431 cut-off events. [2024-06-28 03:22:36,713 INFO L125 PetriNetUnfolderBase]: For 344755/344755 co-relation queries the response was YES. [2024-06-28 03:22:36,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36288 conditions, 4431 events. 2788/4431 cut-off events. For 344755/344755 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25178 event pairs, 668 based on Foata normal form. 16/4444 useless extension candidates. Maximal degree in co-relation 36209. Up to 3845 conditions per place. [2024-06-28 03:22:36,760 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 174 selfloop transitions, 91 changer transitions 0/273 dead transitions. [2024-06-28 03:22:36,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 273 transitions, 3439 flow [2024-06-28 03:22:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 03:22:36,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2024-06-28 03:22:36,762 INFO L175 Difference]: Start difference. First operand has 187 places, 236 transitions, 2688 flow. Second operand 11 states and 205 transitions. [2024-06-28 03:22:36,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 273 transitions, 3439 flow [2024-06-28 03:22:37,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 273 transitions, 3260 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:37,131 INFO L231 Difference]: Finished difference. Result has 191 places, 239 transitions, 2788 flow [2024-06-28 03:22:37,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2788, PETRI_PLACES=191, PETRI_TRANSITIONS=239} [2024-06-28 03:22:37,132 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-28 03:22:37,132 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 239 transitions, 2788 flow [2024-06-28 03:22:37,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:37,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:37,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:37,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:22:37,133 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)] === [2024-06-28 03:22:37,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:37,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1655472492, now seen corresponding path program 9 times [2024-06-28 03:22:37,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:37,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161827784] [2024-06-28 03:22:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:37,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161827784] [2024-06-28 03:22:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161827784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:38,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:38,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:38,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926631973] [2024-06-28 03:22:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:38,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:38,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:38,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 239 transitions, 2788 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:38,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:38,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:38,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:39,140 INFO L124 PetriNetUnfolderBase]: 2972/4757 cut-off events. [2024-06-28 03:22:39,141 INFO L125 PetriNetUnfolderBase]: For 373767/373767 co-relation queries the response was YES. [2024-06-28 03:22:39,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39413 conditions, 4757 events. 2972/4757 cut-off events. For 373767/373767 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27565 event pairs, 665 based on Foata normal form. 12/4766 useless extension candidates. Maximal degree in co-relation 39332. Up to 2925 conditions per place. [2024-06-28 03:22:39,184 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 135 selfloop transitions, 140 changer transitions 0/283 dead transitions. [2024-06-28 03:22:39,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 283 transitions, 3894 flow [2024-06-28 03:22:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:22:39,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:22:39,185 INFO L175 Difference]: Start difference. First operand has 191 places, 239 transitions, 2788 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:22:39,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 283 transitions, 3894 flow [2024-06-28 03:22:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 283 transitions, 3698 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:39,751 INFO L231 Difference]: Finished difference. Result has 195 places, 243 transitions, 3127 flow [2024-06-28 03:22:39,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3127, PETRI_PLACES=195, PETRI_TRANSITIONS=243} [2024-06-28 03:22:39,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-28 03:22:39,752 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 243 transitions, 3127 flow [2024-06-28 03:22:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:39,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:39,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:22:39,752 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)] === [2024-06-28 03:22:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1187583210, now seen corresponding path program 10 times [2024-06-28 03:22:39,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:39,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514438129] [2024-06-28 03:22:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:40,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:40,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514438129] [2024-06-28 03:22:40,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514438129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:40,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:40,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512629888] [2024-06-28 03:22:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:40,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:40,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:40,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 243 transitions, 3127 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:40,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:40,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:40,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:42,014 INFO L124 PetriNetUnfolderBase]: 3020/4845 cut-off events. [2024-06-28 03:22:42,015 INFO L125 PetriNetUnfolderBase]: For 391936/391936 co-relation queries the response was YES. [2024-06-28 03:22:42,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40741 conditions, 4845 events. 3020/4845 cut-off events. For 391936/391936 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28303 event pairs, 699 based on Foata normal form. 12/4854 useless extension candidates. Maximal degree in co-relation 40657. Up to 3968 conditions per place. [2024-06-28 03:22:42,062 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 181 selfloop transitions, 92 changer transitions 0/281 dead transitions. [2024-06-28 03:22:42,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 281 transitions, 3912 flow [2024-06-28 03:22:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:22:42,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-28 03:22:42,064 INFO L175 Difference]: Start difference. First operand has 195 places, 243 transitions, 3127 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:22:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 281 transitions, 3912 flow [2024-06-28 03:22:42,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 281 transitions, 3715 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:42,565 INFO L231 Difference]: Finished difference. Result has 199 places, 244 transitions, 3191 flow [2024-06-28 03:22:42,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3191, PETRI_PLACES=199, PETRI_TRANSITIONS=244} [2024-06-28 03:22:42,566 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-28 03:22:42,566 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 244 transitions, 3191 flow [2024-06-28 03:22:42,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:42,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:42,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:42,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:22:42,567 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)] === [2024-06-28 03:22:42,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1026187540, now seen corresponding path program 11 times [2024-06-28 03:22:42,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:42,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914379030] [2024-06-28 03:22:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914379030] [2024-06-28 03:22:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914379030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088591052] [2024-06-28 03:22:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:43,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:43,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 244 transitions, 3191 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:43,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:43,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:43,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:44,672 INFO L124 PetriNetUnfolderBase]: 3140/5051 cut-off events. [2024-06-28 03:22:44,672 INFO L125 PetriNetUnfolderBase]: For 431625/431625 co-relation queries the response was YES. [2024-06-28 03:22:44,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43843 conditions, 5051 events. 3140/5051 cut-off events. For 431625/431625 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30046 event pairs, 773 based on Foata normal form. 12/5060 useless extension candidates. Maximal degree in co-relation 43757. Up to 4195 conditions per place. [2024-06-28 03:22:44,720 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 151 selfloop transitions, 126 changer transitions 0/285 dead transitions. [2024-06-28 03:22:44,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 285 transitions, 4249 flow [2024-06-28 03:22:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:22:44,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:22:44,722 INFO L175 Difference]: Start difference. First operand has 199 places, 244 transitions, 3191 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:22:44,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 285 transitions, 4249 flow [2024-06-28 03:22:45,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 285 transitions, 4031 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:45,427 INFO L231 Difference]: Finished difference. Result has 202 places, 246 transitions, 3375 flow [2024-06-28 03:22:45,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3375, PETRI_PLACES=202, PETRI_TRANSITIONS=246} [2024-06-28 03:22:45,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 03:22:45,428 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 246 transitions, 3375 flow [2024-06-28 03:22:45,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:45,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:45,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:45,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:22:45,428 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:45,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1655205582, now seen corresponding path program 12 times [2024-06-28 03:22:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:45,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123950970] [2024-06-28 03:22:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123950970] [2024-06-28 03:22:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123950970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643839861] [2024-06-28 03:22:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:46,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:46,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 246 transitions, 3375 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:46,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:46,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:46,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:47,482 INFO L124 PetriNetUnfolderBase]: 3112/5007 cut-off events. [2024-06-28 03:22:47,482 INFO L125 PetriNetUnfolderBase]: For 428867/428867 co-relation queries the response was YES. [2024-06-28 03:22:47,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42794 conditions, 5007 events. 3112/5007 cut-off events. For 428867/428867 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 29747 event pairs, 772 based on Foata normal form. 16/5020 useless extension candidates. Maximal degree in co-relation 42707. Up to 4274 conditions per place. [2024-06-28 03:22:47,534 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 148 selfloop transitions, 124 changer transitions 0/280 dead transitions. [2024-06-28 03:22:47,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 280 transitions, 4059 flow [2024-06-28 03:22:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:22:47,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-28 03:22:47,536 INFO L175 Difference]: Start difference. First operand has 202 places, 246 transitions, 3375 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:22:47,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 280 transitions, 4059 flow [2024-06-28 03:22:48,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 280 transitions, 3825 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:48,235 INFO L231 Difference]: Finished difference. Result has 206 places, 246 transitions, 3396 flow [2024-06-28 03:22:48,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3396, PETRI_PLACES=206, PETRI_TRANSITIONS=246} [2024-06-28 03:22:48,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 03:22:48,235 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 246 transitions, 3396 flow [2024-06-28 03:22:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:48,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:48,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:22:48,236 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)] === [2024-06-28 03:22:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1177525682, now seen corresponding path program 13 times [2024-06-28 03:22:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048703295] [2024-06-28 03:22:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048703295] [2024-06-28 03:22:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048703295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:49,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905768292] [2024-06-28 03:22:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:49,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:49,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 246 transitions, 3396 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:49,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:49,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:49,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:50,691 INFO L124 PetriNetUnfolderBase]: 3228/5205 cut-off events. [2024-06-28 03:22:50,691 INFO L125 PetriNetUnfolderBase]: For 457676/457678 co-relation queries the response was YES. [2024-06-28 03:22:50,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44557 conditions, 5205 events. 3228/5205 cut-off events. For 457676/457678 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 31338 event pairs, 753 based on Foata normal form. 30/5232 useless extension candidates. Maximal degree in co-relation 44468. Up to 4579 conditions per place. [2024-06-28 03:22:50,741 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 196 selfloop transitions, 80 changer transitions 0/284 dead transitions. [2024-06-28 03:22:50,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 284 transitions, 4241 flow [2024-06-28 03:22:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:22:50,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:22:50,743 INFO L175 Difference]: Start difference. First operand has 206 places, 246 transitions, 3396 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:22:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 284 transitions, 4241 flow [2024-06-28 03:22:51,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 284 transitions, 3988 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:51,458 INFO L231 Difference]: Finished difference. Result has 207 places, 249 transitions, 3468 flow [2024-06-28 03:22:51,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3468, PETRI_PLACES=207, PETRI_TRANSITIONS=249} [2024-06-28 03:22:51,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-06-28 03:22:51,458 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 249 transitions, 3468 flow [2024-06-28 03:22:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:51,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:51,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:22:51,459 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)] === [2024-06-28 03:22:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1398705072, now seen corresponding path program 14 times [2024-06-28 03:22:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:51,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581653204] [2024-06-28 03:22:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:52,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581653204] [2024-06-28 03:22:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581653204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:52,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:52,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:52,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164256687] [2024-06-28 03:22:52,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:52,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:52,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:52,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:52,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 249 transitions, 3468 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:52,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:52,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:52,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:53,729 INFO L124 PetriNetUnfolderBase]: 3261/5272 cut-off events. [2024-06-28 03:22:53,729 INFO L125 PetriNetUnfolderBase]: For 461551/461551 co-relation queries the response was YES. [2024-06-28 03:22:53,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45102 conditions, 5272 events. 3261/5272 cut-off events. For 461551/461551 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 31941 event pairs, 815 based on Foata normal form. 16/5285 useless extension candidates. Maximal degree in co-relation 45012. Up to 4665 conditions per place. [2024-06-28 03:22:53,787 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 184 selfloop transitions, 92 changer transitions 0/284 dead transitions. [2024-06-28 03:22:53,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 284 transitions, 4235 flow [2024-06-28 03:22:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 03:22:53,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-28 03:22:53,789 INFO L175 Difference]: Start difference. First operand has 207 places, 249 transitions, 3468 flow. Second operand 11 states and 204 transitions. [2024-06-28 03:22:53,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 284 transitions, 4235 flow [2024-06-28 03:22:54,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 284 transitions, 4005 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:54,589 INFO L231 Difference]: Finished difference. Result has 210 places, 250 transitions, 3506 flow [2024-06-28 03:22:54,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3506, PETRI_PLACES=210, PETRI_TRANSITIONS=250} [2024-06-28 03:22:54,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-06-28 03:22:54,590 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 250 transitions, 3506 flow [2024-06-28 03:22:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:54,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:54,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:22:54,591 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)] === [2024-06-28 03:22:54,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1398712512, now seen corresponding path program 15 times [2024-06-28 03:22:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772117744] [2024-06-28 03:22:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772117744] [2024-06-28 03:22:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772117744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:55,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:55,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:55,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590815080] [2024-06-28 03:22:55,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:55,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:55,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:55,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:55,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:55,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:22:55,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 250 transitions, 3506 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:55,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:55,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:22:55,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:56,893 INFO L124 PetriNetUnfolderBase]: 3248/5247 cut-off events. [2024-06-28 03:22:56,893 INFO L125 PetriNetUnfolderBase]: For 446220/446220 co-relation queries the response was YES. [2024-06-28 03:22:56,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43986 conditions, 5247 events. 3248/5247 cut-off events. For 446220/446220 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31702 event pairs, 748 based on Foata normal form. 12/5256 useless extension candidates. Maximal degree in co-relation 43895. Up to 4461 conditions per place. [2024-06-28 03:22:56,946 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 92 changer transitions 0/287 dead transitions. [2024-06-28 03:22:56,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 287 transitions, 4234 flow [2024-06-28 03:22:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:22:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2024-06-28 03:22:56,947 INFO L175 Difference]: Start difference. First operand has 210 places, 250 transitions, 3506 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:22:56,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 287 transitions, 4234 flow [2024-06-28 03:22:57,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 287 transitions, 4011 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:57,811 INFO L231 Difference]: Finished difference. Result has 211 places, 250 transitions, 3473 flow [2024-06-28 03:22:57,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3473, PETRI_PLACES=211, PETRI_TRANSITIONS=250} [2024-06-28 03:22:57,812 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-28 03:22:57,812 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 250 transitions, 3473 flow [2024-06-28 03:22:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:22:57,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:57,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:22:57,813 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:57,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash 642793182, now seen corresponding path program 2 times [2024-06-28 03:22:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:57,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698676928] [2024-06-28 03:22:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:57,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698676928] [2024-06-28 03:22:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698676928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:58,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682030577] [2024-06-28 03:22:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:58,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:58,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:22:58,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 250 transitions, 3473 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:58,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:58,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:22:58,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:59,588 INFO L124 PetriNetUnfolderBase]: 3354/5357 cut-off events. [2024-06-28 03:22:59,588 INFO L125 PetriNetUnfolderBase]: For 439550/439550 co-relation queries the response was YES. [2024-06-28 03:22:59,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44558 conditions, 5357 events. 3354/5357 cut-off events. For 439550/439550 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31854 event pairs, 784 based on Foata normal form. 2/5356 useless extension candidates. Maximal degree in co-relation 44466. Up to 5125 conditions per place. [2024-06-28 03:22:59,640 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 228 selfloop transitions, 34 changer transitions 0/266 dead transitions. [2024-06-28 03:22:59,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 266 transitions, 4209 flow [2024-06-28 03:22:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:22:59,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:22:59,641 INFO L175 Difference]: Start difference. First operand has 211 places, 250 transitions, 3473 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:22:59,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 266 transitions, 4209 flow [2024-06-28 03:23:00,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 266 transitions, 3842 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:00,365 INFO L231 Difference]: Finished difference. Result has 209 places, 253 transitions, 3230 flow [2024-06-28 03:23:00,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3230, PETRI_PLACES=209, PETRI_TRANSITIONS=253} [2024-06-28 03:23:00,365 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 03:23:00,365 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 253 transitions, 3230 flow [2024-06-28 03:23:00,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:00,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:00,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:00,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:23:00,366 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:00,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1505414524, now seen corresponding path program 3 times [2024-06-28 03:23:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:00,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238012783] [2024-06-28 03:23:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:00,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:01,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:01,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238012783] [2024-06-28 03:23:01,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238012783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:01,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528411812] [2024-06-28 03:23:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:01,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:23:01,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 253 transitions, 3230 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:01,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:01,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:23:01,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:02,139 INFO L124 PetriNetUnfolderBase]: 3348/5349 cut-off events. [2024-06-28 03:23:02,140 INFO L125 PetriNetUnfolderBase]: For 435288/435288 co-relation queries the response was YES. [2024-06-28 03:23:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43593 conditions, 5349 events. 3348/5349 cut-off events. For 435288/435288 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 31843 event pairs, 837 based on Foata normal form. 2/5348 useless extension candidates. Maximal degree in co-relation 43501. Up to 5120 conditions per place. [2024-06-28 03:23:02,190 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 228 selfloop transitions, 33 changer transitions 0/265 dead transitions. [2024-06-28 03:23:02,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 265 transitions, 3800 flow [2024-06-28 03:23:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:23:02,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:23:02,192 INFO L175 Difference]: Start difference. First operand has 209 places, 253 transitions, 3230 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:23:02,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 265 transitions, 3800 flow [2024-06-28 03:23:02,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 265 transitions, 3672 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:02,873 INFO L231 Difference]: Finished difference. Result has 212 places, 253 transitions, 3174 flow [2024-06-28 03:23:02,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3174, PETRI_PLACES=212, PETRI_TRANSITIONS=253} [2024-06-28 03:23:02,874 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-06-28 03:23:02,874 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 253 transitions, 3174 flow [2024-06-28 03:23:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:02,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:02,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:23:02,875 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)] === [2024-06-28 03:23:02,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2108652464, now seen corresponding path program 16 times [2024-06-28 03:23:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:02,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069335837] [2024-06-28 03:23:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069335837] [2024-06-28 03:23:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069335837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752605521] [2024-06-28 03:23:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:04,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:04,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 253 transitions, 3174 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:04,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:04,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:04,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:05,300 INFO L124 PetriNetUnfolderBase]: 3358/5435 cut-off events. [2024-06-28 03:23:05,300 INFO L125 PetriNetUnfolderBase]: For 471969/471969 co-relation queries the response was YES. [2024-06-28 03:23:05,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43684 conditions, 5435 events. 3358/5435 cut-off events. For 471969/471969 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 33217 event pairs, 805 based on Foata normal form. 28/5461 useless extension candidates. Maximal degree in co-relation 43591. Up to 4818 conditions per place. [2024-06-28 03:23:05,352 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 239 selfloop transitions, 58 changer transitions 0/306 dead transitions. [2024-06-28 03:23:05,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 306 transitions, 4162 flow [2024-06-28 03:23:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:23:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:23:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 03:23:05,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:23:05,353 INFO L175 Difference]: Start difference. First operand has 212 places, 253 transitions, 3174 flow. Second operand 11 states and 207 transitions. [2024-06-28 03:23:05,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 306 transitions, 4162 flow [2024-06-28 03:23:05,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 306 transitions, 4044 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:05,945 INFO L231 Difference]: Finished difference. Result has 219 places, 264 transitions, 3470 flow [2024-06-28 03:23:05,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3470, PETRI_PLACES=219, PETRI_TRANSITIONS=264} [2024-06-28 03:23:05,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-28 03:23:05,946 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 264 transitions, 3470 flow [2024-06-28 03:23:05,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:05,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:05,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:05,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:23:05,946 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:05,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1328347360, now seen corresponding path program 1 times [2024-06-28 03:23:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613574839] [2024-06-28 03:23:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:05,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613574839] [2024-06-28 03:23:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613574839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:06,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:06,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:06,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543828531] [2024-06-28 03:23:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:06,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:06,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:23:06,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 264 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:06,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:06,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:23:06,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:07,589 INFO L124 PetriNetUnfolderBase]: 3159/5215 cut-off events. [2024-06-28 03:23:07,589 INFO L125 PetriNetUnfolderBase]: For 391270/391270 co-relation queries the response was YES. [2024-06-28 03:23:07,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41114 conditions, 5215 events. 3159/5215 cut-off events. For 391270/391270 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32597 event pairs, 862 based on Foata normal form. 1/5214 useless extension candidates. Maximal degree in co-relation 41017. Up to 4897 conditions per place. [2024-06-28 03:23:07,642 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 257 selfloop transitions, 15 changer transitions 0/282 dead transitions. [2024-06-28 03:23:07,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 282 transitions, 4104 flow [2024-06-28 03:23:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:23:07,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-28 03:23:07,643 INFO L175 Difference]: Start difference. First operand has 219 places, 264 transitions, 3470 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:23:07,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 282 transitions, 4104 flow [2024-06-28 03:23:08,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 282 transitions, 3928 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:08,219 INFO L231 Difference]: Finished difference. Result has 217 places, 267 transitions, 3382 flow [2024-06-28 03:23:08,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3382, PETRI_PLACES=217, PETRI_TRANSITIONS=267} [2024-06-28 03:23:08,219 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-06-28 03:23:08,219 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 267 transitions, 3382 flow [2024-06-28 03:23:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:08,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:08,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:08,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:23:08,220 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)] === [2024-06-28 03:23:08,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1328467330, now seen corresponding path program 2 times [2024-06-28 03:23:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:08,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283243941] [2024-06-28 03:23:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:08,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283243941] [2024-06-28 03:23:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283243941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:08,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039332703] [2024-06-28 03:23:08,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:08,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:08,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:23:08,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 267 transitions, 3382 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:08,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:08,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:23:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:09,756 INFO L124 PetriNetUnfolderBase]: 3164/5222 cut-off events. [2024-06-28 03:23:09,756 INFO L125 PetriNetUnfolderBase]: For 395039/395039 co-relation queries the response was YES. [2024-06-28 03:23:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41153 conditions, 5222 events. 3164/5222 cut-off events. For 395039/395039 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32686 event pairs, 863 based on Foata normal form. 1/5221 useless extension candidates. Maximal degree in co-relation 41055. Up to 4888 conditions per place. [2024-06-28 03:23:09,809 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 249 selfloop transitions, 27 changer transitions 0/286 dead transitions. [2024-06-28 03:23:09,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 286 transitions, 4194 flow [2024-06-28 03:23:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:23:09,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-28 03:23:09,810 INFO L175 Difference]: Start difference. First operand has 217 places, 267 transitions, 3382 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:23:09,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 286 transitions, 4194 flow [2024-06-28 03:23:10,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 286 transitions, 4128 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:10,533 INFO L231 Difference]: Finished difference. Result has 219 places, 273 transitions, 3486 flow [2024-06-28 03:23:10,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3486, PETRI_PLACES=219, PETRI_TRANSITIONS=273} [2024-06-28 03:23:10,534 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-28 03:23:10,534 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 273 transitions, 3486 flow [2024-06-28 03:23:10,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:10,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:10,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:23:10,534 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)] === [2024-06-28 03:23:10,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 608643346, now seen corresponding path program 1 times [2024-06-28 03:23:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105046057] [2024-06-28 03:23:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:10,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105046057] [2024-06-28 03:23:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105046057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:11,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154579113] [2024-06-28 03:23:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:11,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:11,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:11,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 273 transitions, 3486 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:11,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:11,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:11,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:12,171 INFO L124 PetriNetUnfolderBase]: 3272/5332 cut-off events. [2024-06-28 03:23:12,171 INFO L125 PetriNetUnfolderBase]: For 406370/406370 co-relation queries the response was YES. [2024-06-28 03:23:12,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42184 conditions, 5332 events. 3272/5332 cut-off events. For 406370/406370 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32780 event pairs, 900 based on Foata normal form. 1/5331 useless extension candidates. Maximal degree in co-relation 42085. Up to 5098 conditions per place. [2024-06-28 03:23:12,227 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 263 selfloop transitions, 24 changer transitions 0/292 dead transitions. [2024-06-28 03:23:12,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 292 transitions, 4286 flow [2024-06-28 03:23:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:23:12,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 03:23:12,230 INFO L175 Difference]: Start difference. First operand has 219 places, 273 transitions, 3486 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:23:12,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 292 transitions, 4286 flow [2024-06-28 03:23:12,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 292 transitions, 4221 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:12,947 INFO L231 Difference]: Finished difference. Result has 223 places, 279 transitions, 3549 flow [2024-06-28 03:23:12,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3549, PETRI_PLACES=223, PETRI_TRANSITIONS=279} [2024-06-28 03:23:12,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-28 03:23:12,947 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 279 transitions, 3549 flow [2024-06-28 03:23:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:12,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:12,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:12,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:23:12,948 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)] === [2024-06-28 03:23:12,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1586556760, now seen corresponding path program 3 times [2024-06-28 03:23:12,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:12,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754247230] [2024-06-28 03:23:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:12,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:13,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:13,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754247230] [2024-06-28 03:23:13,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754247230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:13,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:13,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:13,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003141362] [2024-06-28 03:23:13,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:13,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:13,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:13,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:23:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 279 transitions, 3549 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:23:13,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:14,536 INFO L124 PetriNetUnfolderBase]: 3176/5235 cut-off events. [2024-06-28 03:23:14,536 INFO L125 PetriNetUnfolderBase]: For 416921/416921 co-relation queries the response was YES. [2024-06-28 03:23:14,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42031 conditions, 5235 events. 3176/5235 cut-off events. For 416921/416921 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32621 event pairs, 865 based on Foata normal form. 1/5234 useless extension candidates. Maximal degree in co-relation 41930. Up to 4927 conditions per place. [2024-06-28 03:23:14,588 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 261 selfloop transitions, 15 changer transitions 0/288 dead transitions. [2024-06-28 03:23:14,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 288 transitions, 4125 flow [2024-06-28 03:23:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:23:14,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:23:14,589 INFO L175 Difference]: Start difference. First operand has 223 places, 279 transitions, 3549 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:23:14,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 288 transitions, 4125 flow [2024-06-28 03:23:15,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 288 transitions, 4044 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:15,237 INFO L231 Difference]: Finished difference. Result has 227 places, 279 transitions, 3504 flow [2024-06-28 03:23:15,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3504, PETRI_PLACES=227, PETRI_TRANSITIONS=279} [2024-06-28 03:23:15,237 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-28 03:23:15,238 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 279 transitions, 3504 flow [2024-06-28 03:23:15,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:15,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:15,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:23:15,238 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:15,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 642799134, now seen corresponding path program 2 times [2024-06-28 03:23:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:15,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161058130] [2024-06-28 03:23:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:15,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:15,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161058130] [2024-06-28 03:23:15,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161058130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:15,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:15,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:15,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481553463] [2024-06-28 03:23:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:15,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:15,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:15,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:15,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 279 transitions, 3504 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:15,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:15,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:16,885 INFO L124 PetriNetUnfolderBase]: 3274/5335 cut-off events. [2024-06-28 03:23:16,885 INFO L125 PetriNetUnfolderBase]: For 426771/426771 co-relation queries the response was YES. [2024-06-28 03:23:16,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42764 conditions, 5335 events. 3274/5335 cut-off events. For 426771/426771 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32754 event pairs, 898 based on Foata normal form. 1/5334 useless extension candidates. Maximal degree in co-relation 42661. Up to 5122 conditions per place. [2024-06-28 03:23:16,938 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 271 selfloop transitions, 15 changer transitions 0/291 dead transitions. [2024-06-28 03:23:16,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 291 transitions, 4138 flow [2024-06-28 03:23:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:23:16,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 03:23:16,940 INFO L175 Difference]: Start difference. First operand has 227 places, 279 transitions, 3504 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:23:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 291 transitions, 4138 flow [2024-06-28 03:23:17,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 291 transitions, 4092 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:17,559 INFO L231 Difference]: Finished difference. Result has 228 places, 282 transitions, 3538 flow [2024-06-28 03:23:17,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3538, PETRI_PLACES=228, PETRI_TRANSITIONS=282} [2024-06-28 03:23:17,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-28 03:23:17,561 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 282 transitions, 3538 flow [2024-06-28 03:23:17,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:17,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:17,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:17,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:23:17,562 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)] === [2024-06-28 03:23:17,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1505599036, now seen corresponding path program 3 times [2024-06-28 03:23:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757746561] [2024-06-28 03:23:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:18,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:18,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757746561] [2024-06-28 03:23:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757746561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822553432] [2024-06-28 03:23:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:18,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:18,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 282 transitions, 3538 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:18,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:18,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:18,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:19,290 INFO L124 PetriNetUnfolderBase]: 3271/5331 cut-off events. [2024-06-28 03:23:19,290 INFO L125 PetriNetUnfolderBase]: For 435740/435740 co-relation queries the response was YES. [2024-06-28 03:23:19,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42852 conditions, 5331 events. 3271/5331 cut-off events. For 435740/435740 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32756 event pairs, 898 based on Foata normal form. 1/5330 useless extension candidates. Maximal degree in co-relation 42748. Up to 5112 conditions per place. [2024-06-28 03:23:19,340 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 266 selfloop transitions, 20 changer transitions 0/291 dead transitions. [2024-06-28 03:23:19,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 291 transitions, 4134 flow [2024-06-28 03:23:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:23:19,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:23:19,342 INFO L175 Difference]: Start difference. First operand has 228 places, 282 transitions, 3538 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:23:19,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 291 transitions, 4134 flow [2024-06-28 03:23:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 291 transitions, 4066 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:19,910 INFO L231 Difference]: Finished difference. Result has 230 places, 282 transitions, 3516 flow [2024-06-28 03:23:19,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3516, PETRI_PLACES=230, PETRI_TRANSITIONS=282} [2024-06-28 03:23:19,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 03:23:19,911 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 282 transitions, 3516 flow [2024-06-28 03:23:19,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:19,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:19,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:23:19,911 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)] === [2024-06-28 03:23:19,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1284954295, now seen corresponding path program 1 times [2024-06-28 03:23:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861619779] [2024-06-28 03:23:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861619779] [2024-06-28 03:23:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861619779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:21,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668457356] [2024-06-28 03:23:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:21,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:21,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 282 transitions, 3516 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:21,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:21,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:22,732 INFO L124 PetriNetUnfolderBase]: 3447/5570 cut-off events. [2024-06-28 03:23:22,733 INFO L125 PetriNetUnfolderBase]: For 542640/542640 co-relation queries the response was YES. [2024-06-28 03:23:22,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46525 conditions, 5570 events. 3447/5570 cut-off events. For 542640/542640 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34154 event pairs, 706 based on Foata normal form. 12/5580 useless extension candidates. Maximal degree in co-relation 46420. Up to 5144 conditions per place. [2024-06-28 03:23:22,794 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 282 selfloop transitions, 31 changer transitions 0/325 dead transitions. [2024-06-28 03:23:22,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 325 transitions, 4360 flow [2024-06-28 03:23:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:23:22,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:23:22,796 INFO L175 Difference]: Start difference. First operand has 230 places, 282 transitions, 3516 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:23:22,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 325 transitions, 4360 flow [2024-06-28 03:23:23,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 325 transitions, 4294 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:23,548 INFO L231 Difference]: Finished difference. Result has 235 places, 286 transitions, 3615 flow [2024-06-28 03:23:23,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3615, PETRI_PLACES=235, PETRI_TRANSITIONS=286} [2024-06-28 03:23:23,549 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-28 03:23:23,549 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 286 transitions, 3615 flow [2024-06-28 03:23:23,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:23,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:23,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:23,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:23:23,550 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)] === [2024-06-28 03:23:23,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1289538265, now seen corresponding path program 2 times [2024-06-28 03:23:23,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:23,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117600484] [2024-06-28 03:23:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117600484] [2024-06-28 03:23:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117600484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:24,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:24,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:24,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439931860] [2024-06-28 03:23:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:24,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:24,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:24,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:24,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 286 transitions, 3615 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:24,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:24,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:24,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:25,837 INFO L124 PetriNetUnfolderBase]: 3488/5641 cut-off events. [2024-06-28 03:23:25,837 INFO L125 PetriNetUnfolderBase]: For 558600/558600 co-relation queries the response was YES. [2024-06-28 03:23:25,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47679 conditions, 5641 events. 3488/5641 cut-off events. For 558600/558600 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34684 event pairs, 781 based on Foata normal form. 12/5651 useless extension candidates. Maximal degree in co-relation 47572. Up to 5256 conditions per place. [2024-06-28 03:23:25,899 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 285 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2024-06-28 03:23:25,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 326 transitions, 4452 flow [2024-06-28 03:23:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:23:25,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 03:23:25,901 INFO L175 Difference]: Start difference. First operand has 235 places, 286 transitions, 3615 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:23:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 326 transitions, 4452 flow [2024-06-28 03:23:27,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 326 transitions, 4334 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:27,339 INFO L231 Difference]: Finished difference. Result has 239 places, 288 transitions, 3649 flow [2024-06-28 03:23:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3649, PETRI_PLACES=239, PETRI_TRANSITIONS=288} [2024-06-28 03:23:27,340 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-28 03:23:27,340 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 288 transitions, 3649 flow [2024-06-28 03:23:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:27,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:27,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:27,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:23:27,341 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)] === [2024-06-28 03:23:27,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash 427938863, now seen corresponding path program 3 times [2024-06-28 03:23:27,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:27,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297298559] [2024-06-28 03:23:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:28,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297298559] [2024-06-28 03:23:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297298559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:28,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:28,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:28,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157437947] [2024-06-28 03:23:28,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:28,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:28,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:28,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:28,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 288 transitions, 3649 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:29,753 INFO L124 PetriNetUnfolderBase]: 3528/5707 cut-off events. [2024-06-28 03:23:29,754 INFO L125 PetriNetUnfolderBase]: For 580293/580303 co-relation queries the response was YES. [2024-06-28 03:23:29,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48270 conditions, 5707 events. 3528/5707 cut-off events. For 580293/580303 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35136 event pairs, 667 based on Foata normal form. 12/5713 useless extension candidates. Maximal degree in co-relation 48161. Up to 5286 conditions per place. [2024-06-28 03:23:29,818 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 292 selfloop transitions, 27 changer transitions 0/331 dead transitions. [2024-06-28 03:23:29,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 331 transitions, 4509 flow [2024-06-28 03:23:29,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:23:29,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 03:23:29,819 INFO L175 Difference]: Start difference. First operand has 239 places, 288 transitions, 3649 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:23:29,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 331 transitions, 4509 flow [2024-06-28 03:23:31,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 331 transitions, 4402 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:31,039 INFO L231 Difference]: Finished difference. Result has 243 places, 291 transitions, 3699 flow [2024-06-28 03:23:31,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3699, PETRI_PLACES=243, PETRI_TRANSITIONS=291} [2024-06-28 03:23:31,039 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-28 03:23:31,040 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 291 transitions, 3699 flow [2024-06-28 03:23:31,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:31,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:31,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:23:31,040 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)] === [2024-06-28 03:23:31,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1995825199, now seen corresponding path program 4 times [2024-06-28 03:23:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153977545] [2024-06-28 03:23:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:32,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:32,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153977545] [2024-06-28 03:23:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153977545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:32,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410772351] [2024-06-28 03:23:32,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:32,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:32,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:32,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:32,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 291 transitions, 3699 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:32,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:32,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:32,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:33,414 INFO L124 PetriNetUnfolderBase]: 3570/5783 cut-off events. [2024-06-28 03:23:33,415 INFO L125 PetriNetUnfolderBase]: For 599403/599403 co-relation queries the response was YES. [2024-06-28 03:23:33,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49064 conditions, 5783 events. 3570/5783 cut-off events. For 599403/599403 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35823 event pairs, 788 based on Foata normal form. 12/5793 useless extension candidates. Maximal degree in co-relation 48953. Up to 5222 conditions per place. [2024-06-28 03:23:33,484 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 255 selfloop transitions, 65 changer transitions 0/332 dead transitions. [2024-06-28 03:23:33,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 332 transitions, 4567 flow [2024-06-28 03:23:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:23:33,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 03:23:33,485 INFO L175 Difference]: Start difference. First operand has 243 places, 291 transitions, 3699 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:23:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 332 transitions, 4567 flow [2024-06-28 03:23:34,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 332 transitions, 4453 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:34,751 INFO L231 Difference]: Finished difference. Result has 247 places, 295 transitions, 3845 flow [2024-06-28 03:23:34,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3845, PETRI_PLACES=247, PETRI_TRANSITIONS=295} [2024-06-28 03:23:34,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-28 03:23:34,752 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 295 transitions, 3845 flow [2024-06-28 03:23:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:34,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:34,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:23:34,752 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:34,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1692711099, now seen corresponding path program 1 times [2024-06-28 03:23:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79496090] [2024-06-28 03:23:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79496090] [2024-06-28 03:23:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79496090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651557573] [2024-06-28 03:23:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:35,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:35,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:35,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 295 transitions, 3845 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:35,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:35,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:35,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:36,533 INFO L124 PetriNetUnfolderBase]: 3596/5821 cut-off events. [2024-06-28 03:23:36,533 INFO L125 PetriNetUnfolderBase]: For 597183/597183 co-relation queries the response was YES. [2024-06-28 03:23:36,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49679 conditions, 5821 events. 3596/5821 cut-off events. For 597183/597183 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36079 event pairs, 825 based on Foata normal form. 2/5821 useless extension candidates. Maximal degree in co-relation 49566. Up to 5477 conditions per place. [2024-06-28 03:23:36,599 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 275 selfloop transitions, 39 changer transitions 0/326 dead transitions. [2024-06-28 03:23:36,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 326 transitions, 4817 flow [2024-06-28 03:23:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:23:36,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-28 03:23:36,600 INFO L175 Difference]: Start difference. First operand has 247 places, 295 transitions, 3845 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:23:36,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 326 transitions, 4817 flow [2024-06-28 03:23:37,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 326 transitions, 4617 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:37,704 INFO L231 Difference]: Finished difference. Result has 248 places, 306 transitions, 3903 flow [2024-06-28 03:23:37,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3903, PETRI_PLACES=248, PETRI_TRANSITIONS=306} [2024-06-28 03:23:37,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-28 03:23:37,705 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 306 transitions, 3903 flow [2024-06-28 03:23:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:37,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:37,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:23:37,706 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)] === [2024-06-28 03:23:37,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1932038855, now seen corresponding path program 2 times [2024-06-28 03:23:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691119039] [2024-06-28 03:23:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:38,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691119039] [2024-06-28 03:23:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691119039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:38,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:38,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143420368] [2024-06-28 03:23:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:38,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:38,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 306 transitions, 3903 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:38,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:38,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:38,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:39,718 INFO L124 PetriNetUnfolderBase]: 3611/5844 cut-off events. [2024-06-28 03:23:39,718 INFO L125 PetriNetUnfolderBase]: For 608974/608974 co-relation queries the response was YES. [2024-06-28 03:23:39,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50166 conditions, 5844 events. 3611/5844 cut-off events. For 608974/608974 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36270 event pairs, 827 based on Foata normal form. 2/5843 useless extension candidates. Maximal degree in co-relation 50051. Up to 5564 conditions per place. [2024-06-28 03:23:39,785 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 284 selfloop transitions, 30 changer transitions 0/326 dead transitions. [2024-06-28 03:23:39,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 326 transitions, 4674 flow [2024-06-28 03:23:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:23:39,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:23:39,786 INFO L175 Difference]: Start difference. First operand has 248 places, 306 transitions, 3903 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:23:39,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 326 transitions, 4674 flow [2024-06-28 03:23:41,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 326 transitions, 4573 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 03:23:41,126 INFO L231 Difference]: Finished difference. Result has 254 places, 313 transitions, 3973 flow [2024-06-28 03:23:41,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3973, PETRI_PLACES=254, PETRI_TRANSITIONS=313} [2024-06-28 03:23:41,128 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-28 03:23:41,128 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 313 transitions, 3973 flow [2024-06-28 03:23:41,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:41,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:41,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:41,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:23:41,129 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:41,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1698432955, now seen corresponding path program 1 times [2024-06-28 03:23:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:41,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378772612] [2024-06-28 03:23:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:41,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378772612] [2024-06-28 03:23:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378772612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:41,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:41,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186915842] [2024-06-28 03:23:41,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:41,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:42,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:23:42,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 313 transitions, 3973 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) [2024-06-28 03:23:42,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:42,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:23:42,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:43,371 INFO L124 PetriNetUnfolderBase]: 3707/5944 cut-off events. [2024-06-28 03:23:43,371 INFO L125 PetriNetUnfolderBase]: For 622377/622377 co-relation queries the response was YES. [2024-06-28 03:23:43,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50930 conditions, 5944 events. 3707/5944 cut-off events. For 622377/622377 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36430 event pairs, 851 based on Foata normal form. 2/5944 useless extension candidates. Maximal degree in co-relation 50813. Up to 5677 conditions per place. [2024-06-28 03:23:43,438 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 292 selfloop transitions, 45 changer transitions 0/341 dead transitions. [2024-06-28 03:23:43,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 341 transitions, 4969 flow [2024-06-28 03:23:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:23:43,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:23:43,440 INFO L175 Difference]: Start difference. First operand has 254 places, 313 transitions, 3973 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:23:43,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 341 transitions, 4969 flow [2024-06-28 03:23:44,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 341 transitions, 4911 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:44,434 INFO L231 Difference]: Finished difference. Result has 260 places, 322 transitions, 4138 flow [2024-06-28 03:23:44,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4138, PETRI_PLACES=260, PETRI_TRANSITIONS=322} [2024-06-28 03:23:44,435 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 03:23:44,435 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 322 transitions, 4138 flow [2024-06-28 03:23:44,435 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) [2024-06-28 03:23:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:44,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:23:44,436 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)] === [2024-06-28 03:23:44,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1255784829, now seen corresponding path program 5 times [2024-06-28 03:23:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:44,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468416575] [2024-06-28 03:23:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468416575] [2024-06-28 03:23:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468416575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:45,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:45,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656190311] [2024-06-28 03:23:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:45,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:45,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 322 transitions, 4138 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:45,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:45,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:45,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:47,116 INFO L124 PetriNetUnfolderBase]: 3597/5824 cut-off events. [2024-06-28 03:23:47,117 INFO L125 PetriNetUnfolderBase]: For 637628/637630 co-relation queries the response was YES. [2024-06-28 03:23:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50028 conditions, 5824 events. 3597/5824 cut-off events. For 637628/637630 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36080 event pairs, 778 based on Foata normal form. 14/5834 useless extension candidates. Maximal degree in co-relation 49909. Up to 5202 conditions per place. [2024-06-28 03:23:47,183 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 267 selfloop transitions, 80 changer transitions 0/359 dead transitions. [2024-06-28 03:23:47,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 359 transitions, 4872 flow [2024-06-28 03:23:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:23:47,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 03:23:47,185 INFO L175 Difference]: Start difference. First operand has 260 places, 322 transitions, 4138 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:23:47,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 359 transitions, 4872 flow [2024-06-28 03:23:48,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 359 transitions, 4811 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:48,161 INFO L231 Difference]: Finished difference. Result has 267 places, 324 transitions, 4175 flow [2024-06-28 03:23:48,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4175, PETRI_PLACES=267, PETRI_TRANSITIONS=324} [2024-06-28 03:23:48,161 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-28 03:23:48,161 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 324 transitions, 4175 flow [2024-06-28 03:23:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-28 03:23:48,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:48,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:48,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:23:48,162 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:48,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1464128189, now seen corresponding path program 3 times [2024-06-28 03:23:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:48,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604404821] [2024-06-28 03:23:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:48,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604404821] [2024-06-28 03:23:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604404821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734135447] [2024-06-28 03:23:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:48,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:48,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 324 transitions, 4175 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:48,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:48,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:50,013 INFO L124 PetriNetUnfolderBase]: 3615/5851 cut-off events. [2024-06-28 03:23:50,013 INFO L125 PetriNetUnfolderBase]: For 639382/639384 co-relation queries the response was YES. [2024-06-28 03:23:50,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50954 conditions, 5851 events. 3615/5851 cut-off events. For 639382/639384 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 36283 event pairs, 818 based on Foata normal form. 4/5851 useless extension candidates. Maximal degree in co-relation 50831. Up to 5442 conditions per place. [2024-06-28 03:23:50,085 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 282 selfloop transitions, 56 changer transitions 0/350 dead transitions. [2024-06-28 03:23:50,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 350 transitions, 5345 flow [2024-06-28 03:23:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:23:50,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-28 03:23:50,086 INFO L175 Difference]: Start difference. First operand has 267 places, 324 transitions, 4175 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:23:50,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 350 transitions, 5345 flow [2024-06-28 03:23:51,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 350 transitions, 5109 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:51,227 INFO L231 Difference]: Finished difference. Result has 267 places, 330 transitions, 4188 flow [2024-06-28 03:23:51,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3939, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4188, PETRI_PLACES=267, PETRI_TRANSITIONS=330} [2024-06-28 03:23:51,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-28 03:23:51,228 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 330 transitions, 4188 flow [2024-06-28 03:23:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:51,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:51,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:23:51,229 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:51,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1688062533, now seen corresponding path program 4 times [2024-06-28 03:23:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:51,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328421493] [2024-06-28 03:23:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:51,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:51,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328421493] [2024-06-28 03:23:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328421493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:23:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807931714] [2024-06-28 03:23:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:23:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:23:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:23:51,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:51,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 330 transitions, 4188 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:51,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:51,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:51,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:53,079 INFO L124 PetriNetUnfolderBase]: 3629/5873 cut-off events. [2024-06-28 03:23:53,079 INFO L125 PetriNetUnfolderBase]: For 651121/651123 co-relation queries the response was YES. [2024-06-28 03:23:53,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51216 conditions, 5873 events. 3629/5873 cut-off events. For 651121/651123 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 36398 event pairs, 819 based on Foata normal form. 4/5873 useless extension candidates. Maximal degree in co-relation 51092. Up to 5456 conditions per place. [2024-06-28 03:23:53,147 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 273 selfloop transitions, 64 changer transitions 0/349 dead transitions. [2024-06-28 03:23:53,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 349 transitions, 5144 flow [2024-06-28 03:23:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:23:53,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-28 03:23:53,149 INFO L175 Difference]: Start difference. First operand has 267 places, 330 transitions, 4188 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:23:53,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 349 transitions, 5144 flow [2024-06-28 03:23:54,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 349 transitions, 4970 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:54,545 INFO L231 Difference]: Finished difference. Result has 271 places, 333 transitions, 4216 flow [2024-06-28 03:23:54,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4046, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4216, PETRI_PLACES=271, PETRI_TRANSITIONS=333} [2024-06-28 03:23:54,546 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-28 03:23:54,546 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 333 transitions, 4216 flow [2024-06-28 03:23:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:23:54,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:54,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:23:54,547 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:54,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1565303427, now seen corresponding path program 5 times [2024-06-28 03:23:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884763772] [2024-06-28 03:23:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:55,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884763772] [2024-06-28 03:23:55,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884763772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:55,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:55,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:55,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599403640] [2024-06-28 03:23:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:55,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:55,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 333 transitions, 4216 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:55,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:55,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:55,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:56,539 INFO L124 PetriNetUnfolderBase]: 3639/5889 cut-off events. [2024-06-28 03:23:56,539 INFO L125 PetriNetUnfolderBase]: For 665512/665514 co-relation queries the response was YES. [2024-06-28 03:23:56,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51508 conditions, 5889 events. 3639/5889 cut-off events. For 665512/665514 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36554 event pairs, 815 based on Foata normal form. 4/5889 useless extension candidates. Maximal degree in co-relation 51382. Up to 5599 conditions per place. [2024-06-28 03:23:56,608 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 303 selfloop transitions, 31 changer transitions 0/346 dead transitions. [2024-06-28 03:23:56,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 346 transitions, 4971 flow [2024-06-28 03:23:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:23:56,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 03:23:56,610 INFO L175 Difference]: Start difference. First operand has 271 places, 333 transitions, 4216 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:23:56,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 346 transitions, 4971 flow [2024-06-28 03:23:57,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 346 transitions, 4859 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:57,493 INFO L231 Difference]: Finished difference. Result has 275 places, 336 transitions, 4231 flow [2024-06-28 03:23:57,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4231, PETRI_PLACES=275, PETRI_TRANSITIONS=336} [2024-06-28 03:23:57,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-28 03:23:57,494 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 336 transitions, 4231 flow [2024-06-28 03:23:57,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:57,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:57,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:23:57,494 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:57,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1151024387, now seen corresponding path program 6 times [2024-06-28 03:23:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838657718] [2024-06-28 03:23:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:58,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838657718] [2024-06-28 03:23:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838657718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:58,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:58,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929950610] [2024-06-28 03:23:58,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:58,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:23:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 336 transitions, 4231 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:58,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:58,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:23:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:59,532 INFO L124 PetriNetUnfolderBase]: 3633/5881 cut-off events. [2024-06-28 03:23:59,532 INFO L125 PetriNetUnfolderBase]: For 675001/675003 co-relation queries the response was YES. [2024-06-28 03:23:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51396 conditions, 5881 events. 3633/5881 cut-off events. For 675001/675003 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36489 event pairs, 814 based on Foata normal form. 4/5881 useless extension candidates. Maximal degree in co-relation 51269. Up to 5567 conditions per place. [2024-06-28 03:23:59,599 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 296 selfloop transitions, 40 changer transitions 0/348 dead transitions. [2024-06-28 03:23:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 348 transitions, 5101 flow [2024-06-28 03:23:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:23:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:23:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:23:59,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 03:23:59,600 INFO L175 Difference]: Start difference. First operand has 275 places, 336 transitions, 4231 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:23:59,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 348 transitions, 5101 flow [2024-06-28 03:24:00,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 348 transitions, 4993 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:00,392 INFO L231 Difference]: Finished difference. Result has 277 places, 336 transitions, 4209 flow [2024-06-28 03:24:00,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4209, PETRI_PLACES=277, PETRI_TRANSITIONS=336} [2024-06-28 03:24:00,393 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-28 03:24:00,393 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 336 transitions, 4209 flow [2024-06-28 03:24:00,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:00,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:00,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:24:00,395 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:00,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -576400323, now seen corresponding path program 2 times [2024-06-28 03:24:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194135641] [2024-06-28 03:24:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194135641] [2024-06-28 03:24:01,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194135641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:01,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971150503] [2024-06-28 03:24:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:01,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:24:01,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 336 transitions, 4209 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:01,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:01,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:24:01,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:02,837 INFO L124 PetriNetUnfolderBase]: 3729/5979 cut-off events. [2024-06-28 03:24:02,838 INFO L125 PetriNetUnfolderBase]: For 689019/689019 co-relation queries the response was YES. [2024-06-28 03:24:02,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52199 conditions, 5979 events. 3729/5979 cut-off events. For 689019/689019 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36661 event pairs, 845 based on Foata normal form. 2/5977 useless extension candidates. Maximal degree in co-relation 52071. Up to 5700 conditions per place. [2024-06-28 03:24:02,910 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 298 selfloop transitions, 51 changer transitions 0/353 dead transitions. [2024-06-28 03:24:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 353 transitions, 5173 flow [2024-06-28 03:24:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:24:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:24:02,912 INFO L175 Difference]: Start difference. First operand has 277 places, 336 transitions, 4209 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:24:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 353 transitions, 5173 flow [2024-06-28 03:24:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 353 transitions, 5055 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:04,061 INFO L231 Difference]: Finished difference. Result has 280 places, 339 transitions, 4253 flow [2024-06-28 03:24:04,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4253, PETRI_PLACES=280, PETRI_TRANSITIONS=339} [2024-06-28 03:24:04,061 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-28 03:24:04,061 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 339 transitions, 4253 flow [2024-06-28 03:24:04,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:04,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:04,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:04,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:24:04,062 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)] === [2024-06-28 03:24:04,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1151257383, now seen corresponding path program 3 times [2024-06-28 03:24:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129301185] [2024-06-28 03:24:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129301185] [2024-06-28 03:24:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129301185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640260787] [2024-06-28 03:24:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:04,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:24:04,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 339 transitions, 4253 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) [2024-06-28 03:24:04,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:04,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:24:04,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:06,373 INFO L124 PetriNetUnfolderBase]: 3739/5995 cut-off events. [2024-06-28 03:24:06,374 INFO L125 PetriNetUnfolderBase]: For 704428/704428 co-relation queries the response was YES. [2024-06-28 03:24:06,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52512 conditions, 5995 events. 3739/5995 cut-off events. For 704428/704428 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 36724 event pairs, 848 based on Foata normal form. 2/5993 useless extension candidates. Maximal degree in co-relation 52383. Up to 5710 conditions per place. [2024-06-28 03:24:06,444 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 300 selfloop transitions, 52 changer transitions 0/356 dead transitions. [2024-06-28 03:24:06,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 356 transitions, 5231 flow [2024-06-28 03:24:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:24:06,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:24:06,446 INFO L175 Difference]: Start difference. First operand has 280 places, 339 transitions, 4253 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:24:06,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 356 transitions, 5231 flow [2024-06-28 03:24:07,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 356 transitions, 5069 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:07,691 INFO L231 Difference]: Finished difference. Result has 283 places, 342 transitions, 4261 flow [2024-06-28 03:24:07,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4110, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4261, PETRI_PLACES=283, PETRI_TRANSITIONS=342} [2024-06-28 03:24:07,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-28 03:24:07,692 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 342 transitions, 4261 flow [2024-06-28 03:24:07,693 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) [2024-06-28 03:24:07,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:07,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:24:07,693 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)] === [2024-06-28 03:24:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1561132969, now seen corresponding path program 4 times [2024-06-28 03:24:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853928204] [2024-06-28 03:24:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853928204] [2024-06-28 03:24:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853928204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441478838] [2024-06-28 03:24:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:08,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:24:08,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 342 transitions, 4261 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:08,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:08,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:24:08,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:09,922 INFO L124 PetriNetUnfolderBase]: 3733/5987 cut-off events. [2024-06-28 03:24:09,923 INFO L125 PetriNetUnfolderBase]: For 713361/713361 co-relation queries the response was YES. [2024-06-28 03:24:09,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52415 conditions, 5987 events. 3733/5987 cut-off events. For 713361/713361 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36692 event pairs, 847 based on Foata normal form. 2/5985 useless extension candidates. Maximal degree in co-relation 52285. Up to 5705 conditions per place. [2024-06-28 03:24:09,994 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 303 selfloop transitions, 49 changer transitions 0/356 dead transitions. [2024-06-28 03:24:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 356 transitions, 5031 flow [2024-06-28 03:24:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:24:09,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:24:09,995 INFO L175 Difference]: Start difference. First operand has 283 places, 342 transitions, 4261 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:24:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 356 transitions, 5031 flow [2024-06-28 03:24:11,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 356 transitions, 4861 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:11,209 INFO L231 Difference]: Finished difference. Result has 285 places, 342 transitions, 4195 flow [2024-06-28 03:24:11,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4195, PETRI_PLACES=285, PETRI_TRANSITIONS=342} [2024-06-28 03:24:11,209 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-28 03:24:11,210 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 342 transitions, 4195 flow [2024-06-28 03:24:11,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:11,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:11,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:11,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:24:11,210 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)] === [2024-06-28 03:24:11,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1111313469, now seen corresponding path program 7 times [2024-06-28 03:24:11,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:11,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915005431] [2024-06-28 03:24:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:11,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915005431] [2024-06-28 03:24:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915005431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:11,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:11,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:24:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408511525] [2024-06-28 03:24:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:11,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:24:11,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:24:11,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:24:11,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:11,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 342 transitions, 4195 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:24:11,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:11,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:11,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:13,128 INFO L124 PetriNetUnfolderBase]: 3650/5906 cut-off events. [2024-06-28 03:24:13,129 INFO L125 PetriNetUnfolderBase]: For 718677/718677 co-relation queries the response was YES. [2024-06-28 03:24:13,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51325 conditions, 5906 events. 3650/5906 cut-off events. For 718677/718677 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36618 event pairs, 808 based on Foata normal form. 2/5902 useless extension candidates. Maximal degree in co-relation 51195. Up to 5609 conditions per place. [2024-06-28 03:24:13,201 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 318 selfloop transitions, 37 changer transitions 0/367 dead transitions. [2024-06-28 03:24:13,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 367 transitions, 5025 flow [2024-06-28 03:24:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:24:13,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 03:24:13,209 INFO L175 Difference]: Start difference. First operand has 285 places, 342 transitions, 4195 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:24:13,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 367 transitions, 5025 flow [2024-06-28 03:24:14,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 367 transitions, 4902 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:14,186 INFO L231 Difference]: Finished difference. Result has 287 places, 348 transitions, 4220 flow [2024-06-28 03:24:14,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4220, PETRI_PLACES=287, PETRI_TRANSITIONS=348} [2024-06-28 03:24:14,186 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-28 03:24:14,187 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 348 transitions, 4220 flow [2024-06-28 03:24:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-28 03:24:14,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:14,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:24:14,187 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1754868709, now seen corresponding path program 1 times [2024-06-28 03:24:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679329498] [2024-06-28 03:24:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:15,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:15,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679329498] [2024-06-28 03:24:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679329498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:15,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:15,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419120016] [2024-06-28 03:24:15,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:15,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:15,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:15,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:24:15,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 348 transitions, 4220 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:15,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:15,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:24:15,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:16,509 INFO L124 PetriNetUnfolderBase]: 3526/5782 cut-off events. [2024-06-28 03:24:16,510 INFO L125 PetriNetUnfolderBase]: For 643868/643868 co-relation queries the response was YES. [2024-06-28 03:24:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48731 conditions, 5782 events. 3526/5782 cut-off events. For 643868/643868 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36591 event pairs, 880 based on Foata normal form. 1/5772 useless extension candidates. Maximal degree in co-relation 48600. Up to 5429 conditions per place. [2024-06-28 03:24:16,580 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 333 selfloop transitions, 24 changer transitions 0/375 dead transitions. [2024-06-28 03:24:16,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 375 transitions, 5272 flow [2024-06-28 03:24:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:24:16,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-28 03:24:16,585 INFO L175 Difference]: Start difference. First operand has 287 places, 348 transitions, 4220 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:24:16,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 375 transitions, 5272 flow [2024-06-28 03:24:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 375 transitions, 5132 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:18,000 INFO L231 Difference]: Finished difference. Result has 288 places, 354 transitions, 4256 flow [2024-06-28 03:24:18,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4256, PETRI_PLACES=288, PETRI_TRANSITIONS=354} [2024-06-28 03:24:18,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-28 03:24:18,001 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 354 transitions, 4256 flow [2024-06-28 03:24:18,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:18,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:18,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:24:18,002 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:18,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1770902952, now seen corresponding path program 1 times [2024-06-28 03:24:18,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:18,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119002197] [2024-06-28 03:24:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119002197] [2024-06-28 03:24:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119002197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208133034] [2024-06-28 03:24:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:18,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:18,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 354 transitions, 4256 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:18,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:18,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:18,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:20,099 INFO L124 PetriNetUnfolderBase]: 3625/5885 cut-off events. [2024-06-28 03:24:20,100 INFO L125 PetriNetUnfolderBase]: For 659756/659756 co-relation queries the response was YES. [2024-06-28 03:24:20,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49952 conditions, 5885 events. 3625/5885 cut-off events. For 659756/659756 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36748 event pairs, 907 based on Foata normal form. 1/5877 useless extension candidates. Maximal degree in co-relation 49820. Up to 5639 conditions per place. [2024-06-28 03:24:20,161 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 345 selfloop transitions, 18 changer transitions 0/373 dead transitions. [2024-06-28 03:24:20,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 373 transitions, 5086 flow [2024-06-28 03:24:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:24:20,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:24:20,172 INFO L175 Difference]: Start difference. First operand has 288 places, 354 transitions, 4256 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:24:20,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 373 transitions, 5086 flow [2024-06-28 03:24:20,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 373 transitions, 4995 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:20,925 INFO L231 Difference]: Finished difference. Result has 291 places, 357 transitions, 4271 flow [2024-06-28 03:24:20,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4271, PETRI_PLACES=291, PETRI_TRANSITIONS=357} [2024-06-28 03:24:20,926 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-28 03:24:20,926 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 357 transitions, 4271 flow [2024-06-28 03:24:20,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:20,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:20,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:20,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:24:20,927 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:20,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1770903107, now seen corresponding path program 2 times [2024-06-28 03:24:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:20,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496432289] [2024-06-28 03:24:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496432289] [2024-06-28 03:24:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496432289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760571011] [2024-06-28 03:24:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:21,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:24:21,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 357 transitions, 4271 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-28 03:24:21,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:21,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:24:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:23,108 INFO L124 PetriNetUnfolderBase]: 3538/5795 cut-off events. [2024-06-28 03:24:23,109 INFO L125 PetriNetUnfolderBase]: For 671708/671708 co-relation queries the response was YES. [2024-06-28 03:24:23,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49788 conditions, 5795 events. 3538/5795 cut-off events. For 671708/671708 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36644 event pairs, 879 based on Foata normal form. 1/5785 useless extension candidates. Maximal degree in co-relation 49654. Up to 5453 conditions per place. [2024-06-28 03:24:23,183 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 336 selfloop transitions, 18 changer transitions 0/373 dead transitions. [2024-06-28 03:24:23,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 373 transitions, 5025 flow [2024-06-28 03:24:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:24:23,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 03:24:23,185 INFO L175 Difference]: Start difference. First operand has 291 places, 357 transitions, 4271 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:24:23,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 373 transitions, 5025 flow [2024-06-28 03:24:25,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 373 transitions, 4915 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:25,027 INFO L231 Difference]: Finished difference. Result has 293 places, 357 transitions, 4203 flow [2024-06-28 03:24:25,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4203, PETRI_PLACES=293, PETRI_TRANSITIONS=357} [2024-06-28 03:24:25,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 03:24:25,028 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 357 transitions, 4203 flow [2024-06-28 03:24:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-28 03:24:25,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:25,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:24:25,028 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:25,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1688076204, now seen corresponding path program 2 times [2024-06-28 03:24:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351079652] [2024-06-28 03:24:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:25,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:25,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351079652] [2024-06-28 03:24:25,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351079652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:25,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:25,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54138226] [2024-06-28 03:24:25,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:26,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 357 transitions, 4203 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:27,121 INFO L124 PetriNetUnfolderBase]: 3635/5899 cut-off events. [2024-06-28 03:24:27,122 INFO L125 PetriNetUnfolderBase]: For 687639/687639 co-relation queries the response was YES. [2024-06-28 03:24:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50596 conditions, 5899 events. 3635/5899 cut-off events. For 687639/687639 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36832 event pairs, 909 based on Foata normal form. 1/5891 useless extension candidates. Maximal degree in co-relation 50461. Up to 5611 conditions per place. [2024-06-28 03:24:27,199 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 325 selfloop transitions, 46 changer transitions 0/381 dead transitions. [2024-06-28 03:24:27,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 381 transitions, 5513 flow [2024-06-28 03:24:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:24:27,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 03:24:27,200 INFO L175 Difference]: Start difference. First operand has 293 places, 357 transitions, 4203 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:24:27,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 381 transitions, 5513 flow [2024-06-28 03:24:28,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 381 transitions, 5467 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:28,990 INFO L231 Difference]: Finished difference. Result has 295 places, 366 transitions, 4453 flow [2024-06-28 03:24:28,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4453, PETRI_PLACES=295, PETRI_TRANSITIONS=366} [2024-06-28 03:24:28,991 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-28 03:24:28,991 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 366 transitions, 4453 flow [2024-06-28 03:24:28,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:28,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:28,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:28,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:24:28,991 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:28,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1688076421, now seen corresponding path program 1 times [2024-06-28 03:24:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97111663] [2024-06-28 03:24:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:29,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:29,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97111663] [2024-06-28 03:24:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97111663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:29,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:29,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:29,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518732113] [2024-06-28 03:24:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:29,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:29,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:29,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 366 transitions, 4453 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:29,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:29,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:29,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:30,948 INFO L124 PetriNetUnfolderBase]: 3653/5926 cut-off events. [2024-06-28 03:24:30,948 INFO L125 PetriNetUnfolderBase]: For 711815/711815 co-relation queries the response was YES. [2024-06-28 03:24:30,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51364 conditions, 5926 events. 3653/5926 cut-off events. For 711815/711815 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37058 event pairs, 909 based on Foata normal form. 2/5919 useless extension candidates. Maximal degree in co-relation 51228. Up to 5648 conditions per place. [2024-06-28 03:24:31,022 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 346 selfloop transitions, 35 changer transitions 0/391 dead transitions. [2024-06-28 03:24:31,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 391 transitions, 5545 flow [2024-06-28 03:24:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:24:31,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:24:31,024 INFO L175 Difference]: Start difference. First operand has 295 places, 366 transitions, 4453 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:24:31,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 391 transitions, 5545 flow [2024-06-28 03:24:32,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 391 transitions, 5452 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 03:24:32,588 INFO L231 Difference]: Finished difference. Result has 300 places, 375 transitions, 4579 flow [2024-06-28 03:24:32,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4579, PETRI_PLACES=300, PETRI_TRANSITIONS=375} [2024-06-28 03:24:32,588 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 03:24:32,589 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 375 transitions, 4579 flow [2024-06-28 03:24:32,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:32,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:32,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:32,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:24:32,589 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:32,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1688070469, now seen corresponding path program 3 times [2024-06-28 03:24:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:32,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844014182] [2024-06-28 03:24:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:32,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844014182] [2024-06-28 03:24:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844014182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657659279] [2024-06-28 03:24:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:33,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:24:33,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 375 transitions, 4579 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:33,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:33,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:24:33,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:34,731 INFO L124 PetriNetUnfolderBase]: 3573/5846 cut-off events. [2024-06-28 03:24:34,731 INFO L125 PetriNetUnfolderBase]: For 726478/726478 co-relation queries the response was YES. [2024-06-28 03:24:34,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51581 conditions, 5846 events. 3573/5846 cut-off events. For 726478/726478 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36912 event pairs, 879 based on Foata normal form. 1/5836 useless extension candidates. Maximal degree in co-relation 51442. Up to 5482 conditions per place. [2024-06-28 03:24:34,806 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 339 selfloop transitions, 30 changer transitions 0/391 dead transitions. [2024-06-28 03:24:34,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 391 transitions, 5423 flow [2024-06-28 03:24:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:24:34,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:24:34,808 INFO L175 Difference]: Start difference. First operand has 300 places, 375 transitions, 4579 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:24:34,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 391 transitions, 5423 flow [2024-06-28 03:24:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 391 transitions, 5355 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 03:24:36,947 INFO L231 Difference]: Finished difference. Result has 305 places, 378 transitions, 4653 flow [2024-06-28 03:24:36,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4511, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4653, PETRI_PLACES=305, PETRI_TRANSITIONS=378} [2024-06-28 03:24:36,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-28 03:24:36,947 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 378 transitions, 4653 flow [2024-06-28 03:24:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:36,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:36,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:36,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:24:36,948 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:36,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1767183882, now seen corresponding path program 3 times [2024-06-28 03:24:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:36,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749439374] [2024-06-28 03:24:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:37,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749439374] [2024-06-28 03:24:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749439374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:37,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:37,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152301249] [2024-06-28 03:24:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:37,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:37,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:37,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:37,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:37,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 378 transitions, 4653 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:37,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:37,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:37,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:39,007 INFO L124 PetriNetUnfolderBase]: 3655/5929 cut-off events. [2024-06-28 03:24:39,008 INFO L125 PetriNetUnfolderBase]: For 737091/737091 co-relation queries the response was YES. [2024-06-28 03:24:39,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52518 conditions, 5929 events. 3655/5929 cut-off events. For 737091/737091 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37037 event pairs, 908 based on Foata normal form. 1/5921 useless extension candidates. Maximal degree in co-relation 52376. Up to 5640 conditions per place. [2024-06-28 03:24:39,086 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 338 selfloop transitions, 44 changer transitions 0/392 dead transitions. [2024-06-28 03:24:39,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 392 transitions, 5629 flow [2024-06-28 03:24:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:24:39,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:24:39,088 INFO L175 Difference]: Start difference. First operand has 305 places, 378 transitions, 4653 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:24:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 392 transitions, 5629 flow [2024-06-28 03:24:40,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 392 transitions, 5471 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:40,830 INFO L231 Difference]: Finished difference. Result has 307 places, 378 transitions, 4589 flow [2024-06-28 03:24:40,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4589, PETRI_PLACES=307, PETRI_TRANSITIONS=378} [2024-06-28 03:24:40,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-28 03:24:40,830 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 378 transitions, 4589 flow [2024-06-28 03:24:40,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:40,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:40,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:40,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:24:40,831 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:40,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:40,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1559575619, now seen corresponding path program 2 times [2024-06-28 03:24:40,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239182133] [2024-06-28 03:24:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:40,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:41,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239182133] [2024-06-28 03:24:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239182133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:41,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:41,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:41,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373527665] [2024-06-28 03:24:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:41,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:41,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:41,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:41,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 378 transitions, 4589 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:41,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:41,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:41,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:42,868 INFO L124 PetriNetUnfolderBase]: 3679/5964 cut-off events. [2024-06-28 03:24:42,869 INFO L125 PetriNetUnfolderBase]: For 760405/760405 co-relation queries the response was YES. [2024-06-28 03:24:42,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53021 conditions, 5964 events. 3679/5964 cut-off events. For 760405/760405 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37258 event pairs, 906 based on Foata normal form. 2/5957 useless extension candidates. Maximal degree in co-relation 52878. Up to 5699 conditions per place. [2024-06-28 03:24:42,944 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 355 selfloop transitions, 29 changer transitions 0/394 dead transitions. [2024-06-28 03:24:42,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 394 transitions, 5619 flow [2024-06-28 03:24:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:24:42,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:24:42,945 INFO L175 Difference]: Start difference. First operand has 307 places, 378 transitions, 4589 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:24:42,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 394 transitions, 5619 flow [2024-06-28 03:24:44,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 394 transitions, 5513 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:45,004 INFO L231 Difference]: Finished difference. Result has 308 places, 381 transitions, 4597 flow [2024-06-28 03:24:45,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4483, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4597, PETRI_PLACES=308, PETRI_TRANSITIONS=381} [2024-06-28 03:24:45,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-28 03:24:45,005 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 381 transitions, 4597 flow [2024-06-28 03:24:45,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:45,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:45,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:24:45,005 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)] === [2024-06-28 03:24:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1555413314, now seen corresponding path program 4 times [2024-06-28 03:24:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536817890] [2024-06-28 03:24:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:45,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536817890] [2024-06-28 03:24:45,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536817890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:45,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:45,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636946467] [2024-06-28 03:24:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:45,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:45,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:45,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 381 transitions, 4597 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:45,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:45,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:45,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:47,170 INFO L124 PetriNetUnfolderBase]: 3678/5963 cut-off events. [2024-06-28 03:24:47,170 INFO L125 PetriNetUnfolderBase]: For 771408/771408 co-relation queries the response was YES. [2024-06-28 03:24:47,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53160 conditions, 5963 events. 3678/5963 cut-off events. For 771408/771408 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37258 event pairs, 906 based on Foata normal form. 1/5955 useless extension candidates. Maximal degree in co-relation 53016. Up to 5708 conditions per place. [2024-06-28 03:24:47,240 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 359 selfloop transitions, 30 changer transitions 0/399 dead transitions. [2024-06-28 03:24:47,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 399 transitions, 5897 flow [2024-06-28 03:24:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:24:47,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:24:47,241 INFO L175 Difference]: Start difference. First operand has 308 places, 381 transitions, 4597 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:24:47,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 399 transitions, 5897 flow [2024-06-28 03:24:49,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 399 transitions, 5790 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:49,124 INFO L231 Difference]: Finished difference. Result has 310 places, 387 transitions, 4692 flow [2024-06-28 03:24:49,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4490, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4692, PETRI_PLACES=310, PETRI_TRANSITIONS=387} [2024-06-28 03:24:49,125 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-28 03:24:49,125 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 387 transitions, 4692 flow [2024-06-28 03:24:49,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:49,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:49,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:49,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:24:49,126 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)] === [2024-06-28 03:24:49,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1548061664, now seen corresponding path program 5 times [2024-06-28 03:24:49,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:49,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097524290] [2024-06-28 03:24:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097524290] [2024-06-28 03:24:49,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097524290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:49,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:49,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565106159] [2024-06-28 03:24:49,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:49,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:49,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 387 transitions, 4692 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:49,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:49,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:49,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:51,149 INFO L124 PetriNetUnfolderBase]: 3675/5959 cut-off events. [2024-06-28 03:24:51,150 INFO L125 PetriNetUnfolderBase]: For 781723/781723 co-relation queries the response was YES. [2024-06-28 03:24:51,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53112 conditions, 5959 events. 3675/5959 cut-off events. For 781723/781723 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37237 event pairs, 906 based on Foata normal form. 1/5951 useless extension candidates. Maximal degree in co-relation 52968. Up to 5721 conditions per place. [2024-06-28 03:24:51,231 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 369 selfloop transitions, 18 changer transitions 0/397 dead transitions. [2024-06-28 03:24:51,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 397 transitions, 5492 flow [2024-06-28 03:24:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:24:51,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:24:51,232 INFO L175 Difference]: Start difference. First operand has 310 places, 387 transitions, 4692 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:24:51,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 397 transitions, 5492 flow [2024-06-28 03:24:53,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 397 transitions, 5322 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:53,364 INFO L231 Difference]: Finished difference. Result has 313 places, 387 transitions, 4564 flow [2024-06-28 03:24:53,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4564, PETRI_PLACES=313, PETRI_TRANSITIONS=387} [2024-06-28 03:24:53,365 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-28 03:24:53,365 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 387 transitions, 4564 flow [2024-06-28 03:24:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:53,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:53,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:53,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:24:53,366 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)] === [2024-06-28 03:24:53,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1555418894, now seen corresponding path program 6 times [2024-06-28 03:24:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361222418] [2024-06-28 03:24:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:53,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361222418] [2024-06-28 03:24:54,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361222418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:54,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:54,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731290152] [2024-06-28 03:24:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:54,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:54,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:24:54,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 387 transitions, 4564 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:54,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:54,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:24:54,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:55,452 INFO L124 PetriNetUnfolderBase]: 3686/5974 cut-off events. [2024-06-28 03:24:55,452 INFO L125 PetriNetUnfolderBase]: For 796730/796730 co-relation queries the response was YES. [2024-06-28 03:24:55,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53297 conditions, 5974 events. 3686/5974 cut-off events. For 796730/796730 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37332 event pairs, 906 based on Foata normal form. 1/5966 useless extension candidates. Maximal degree in co-relation 53152. Up to 5721 conditions per place. [2024-06-28 03:24:55,533 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 356 selfloop transitions, 31 changer transitions 0/397 dead transitions. [2024-06-28 03:24:55,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 397 transitions, 5364 flow [2024-06-28 03:24:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:24:55,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:24:55,534 INFO L175 Difference]: Start difference. First operand has 313 places, 387 transitions, 4564 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:24:55,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 397 transitions, 5364 flow [2024-06-28 03:24:57,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 397 transitions, 5266 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:57,912 INFO L231 Difference]: Finished difference. Result has 314 places, 387 transitions, 4534 flow [2024-06-28 03:24:57,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4534, PETRI_PLACES=314, PETRI_TRANSITIONS=387} [2024-06-28 03:24:57,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-28 03:24:57,913 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 387 transitions, 4534 flow [2024-06-28 03:24:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:57,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:57,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:57,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:24:57,913 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:57,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -571074213, now seen corresponding path program 4 times [2024-06-28 03:24:57,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099754663] [2024-06-28 03:24:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:58,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099754663] [2024-06-28 03:24:58,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099754663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:58,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:58,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869568953] [2024-06-28 03:24:58,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:58,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:59,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:24:59,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 387 transitions, 4534 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-28 03:24:59,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:59,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:24:59,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:00,160 INFO L124 PetriNetUnfolderBase]: 3583/5863 cut-off events. [2024-06-28 03:25:00,160 INFO L125 PetriNetUnfolderBase]: For 804991/804991 co-relation queries the response was YES. [2024-06-28 03:25:00,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52567 conditions, 5863 events. 3583/5863 cut-off events. For 804991/804991 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37084 event pairs, 878 based on Foata normal form. 1/5853 useless extension candidates. Maximal degree in co-relation 52421. Up to 5522 conditions per place. [2024-06-28 03:25:00,237 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 358 selfloop transitions, 18 changer transitions 0/400 dead transitions. [2024-06-28 03:25:00,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 400 transitions, 5388 flow [2024-06-28 03:25:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:25:00,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:25:00,238 INFO L175 Difference]: Start difference. First operand has 314 places, 387 transitions, 4534 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:25:00,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 400 transitions, 5388 flow [2024-06-28 03:25:02,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 400 transitions, 5318 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:25:02,181 INFO L231 Difference]: Finished difference. Result has 315 places, 390 transitions, 4588 flow [2024-06-28 03:25:02,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4588, PETRI_PLACES=315, PETRI_TRANSITIONS=390} [2024-06-28 03:25:02,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-28 03:25:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 390 transitions, 4588 flow [2024-06-28 03:25:02,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-28 03:25:02,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:02,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:02,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:25:02,183 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:02,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:02,183 INFO L85 PathProgramCache]: Analyzing trace with hash -563716611, now seen corresponding path program 3 times [2024-06-28 03:25:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322508471] [2024-06-28 03:25:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:02,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322508471] [2024-06-28 03:25:02,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322508471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:02,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:02,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:02,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164686070] [2024-06-28 03:25:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:02,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:02,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:02,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 390 transitions, 4588 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:02,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:02,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:04,211 INFO L124 PetriNetUnfolderBase]: 3693/5986 cut-off events. [2024-06-28 03:25:04,212 INFO L125 PetriNetUnfolderBase]: For 830275/830275 co-relation queries the response was YES. [2024-06-28 03:25:04,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54036 conditions, 5986 events. 3693/5986 cut-off events. For 830275/830275 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37482 event pairs, 906 based on Foata normal form. 2/5979 useless extension candidates. Maximal degree in co-relation 53889. Up to 5727 conditions per place. [2024-06-28 03:25:04,295 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 371 selfloop transitions, 25 changer transitions 0/406 dead transitions. [2024-06-28 03:25:04,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 406 transitions, 5648 flow [2024-06-28 03:25:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 03:25:04,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 03:25:04,296 INFO L175 Difference]: Start difference. First operand has 315 places, 390 transitions, 4588 flow. Second operand 8 states and 138 transitions. [2024-06-28 03:25:04,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 406 transitions, 5648 flow [2024-06-28 03:25:06,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 406 transitions, 5546 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:25:06,777 INFO L231 Difference]: Finished difference. Result has 317 places, 393 transitions, 4588 flow [2024-06-28 03:25:06,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4588, PETRI_PLACES=317, PETRI_TRANSITIONS=393} [2024-06-28 03:25:06,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-28 03:25:06,777 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 393 transitions, 4588 flow [2024-06-28 03:25:06,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:06,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:06,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:06,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:25:06,778 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:06,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:06,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1547794537, now seen corresponding path program 4 times [2024-06-28 03:25:06,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:06,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046626128] [2024-06-28 03:25:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:06,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:07,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046626128] [2024-06-28 03:25:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046626128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:07,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:07,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:07,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873931262] [2024-06-28 03:25:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:07,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:07,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 393 transitions, 4588 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:07,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:07,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:07,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:09,096 INFO L124 PetriNetUnfolderBase]: 3678/5964 cut-off events. [2024-06-28 03:25:09,096 INFO L125 PetriNetUnfolderBase]: For 836180/836180 co-relation queries the response was YES. [2024-06-28 03:25:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53693 conditions, 5964 events. 3678/5964 cut-off events. For 836180/836180 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37333 event pairs, 905 based on Foata normal form. 3/5958 useless extension candidates. Maximal degree in co-relation 53545. Up to 5718 conditions per place. [2024-06-28 03:25:09,167 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 373 selfloop transitions, 21 changer transitions 0/404 dead transitions. [2024-06-28 03:25:09,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 404 transitions, 5406 flow [2024-06-28 03:25:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:25:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:25:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 03:25:09,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 03:25:09,168 INFO L175 Difference]: Start difference. First operand has 317 places, 393 transitions, 4588 flow. Second operand 9 states and 145 transitions. [2024-06-28 03:25:09,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 404 transitions, 5406 flow [2024-06-28 03:25:11,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 404 transitions, 5290 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:25:11,842 INFO L231 Difference]: Finished difference. Result has 320 places, 393 transitions, 4521 flow [2024-06-28 03:25:11,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4521, PETRI_PLACES=320, PETRI_TRANSITIONS=393} [2024-06-28 03:25:11,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-28 03:25:11,843 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 393 transitions, 4521 flow [2024-06-28 03:25:11,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:11,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:11,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:25:11,844 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:11,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2137893755, now seen corresponding path program 1 times [2024-06-28 03:25:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272102858] [2024-06-28 03:25:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:12,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272102858] [2024-06-28 03:25:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272102858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:12,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223436674] [2024-06-28 03:25:12,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:12,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:12,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:12,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 393 transitions, 4521 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:12,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:12,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:14,100 INFO L124 PetriNetUnfolderBase]: 3741/6031 cut-off events. [2024-06-28 03:25:14,100 INFO L125 PetriNetUnfolderBase]: For 964775/964775 co-relation queries the response was YES. [2024-06-28 03:25:14,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56704 conditions, 6031 events. 3741/6031 cut-off events. For 964775/964775 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37385 event pairs, 804 based on Foata normal form. 1/6026 useless extension candidates. Maximal degree in co-relation 56555. Up to 5683 conditions per place. [2024-06-28 03:25:14,191 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 360 selfloop transitions, 45 changer transitions 0/423 dead transitions. [2024-06-28 03:25:14,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 423 transitions, 5731 flow [2024-06-28 03:25:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:25:14,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:25:14,192 INFO L175 Difference]: Start difference. First operand has 320 places, 393 transitions, 4521 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:25:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 423 transitions, 5731 flow [2024-06-28 03:25:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 423 transitions, 5677 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:25:17,224 INFO L231 Difference]: Finished difference. Result has 320 places, 399 transitions, 4709 flow [2024-06-28 03:25:17,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4709, PETRI_PLACES=320, PETRI_TRANSITIONS=399} [2024-06-28 03:25:17,225 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-28 03:25:17,225 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 399 transitions, 4709 flow [2024-06-28 03:25:17,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:17,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:17,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:17,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:25:17,226 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2132179835, now seen corresponding path program 2 times [2024-06-28 03:25:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322291754] [2024-06-28 03:25:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322291754] [2024-06-28 03:25:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322291754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043642580] [2024-06-28 03:25:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:18,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:18,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 399 transitions, 4709 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:18,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:19,605 INFO L124 PetriNetUnfolderBase]: 3751/6047 cut-off events. [2024-06-28 03:25:19,605 INFO L125 PetriNetUnfolderBase]: For 988406/988406 co-relation queries the response was YES. [2024-06-28 03:25:19,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57514 conditions, 6047 events. 3751/6047 cut-off events. For 988406/988406 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37574 event pairs, 804 based on Foata normal form. 1/6038 useless extension candidates. Maximal degree in co-relation 57364. Up to 5711 conditions per place. [2024-06-28 03:25:19,695 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 364 selfloop transitions, 43 changer transitions 0/425 dead transitions. [2024-06-28 03:25:19,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 425 transitions, 5691 flow [2024-06-28 03:25:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:25:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:25:19,696 INFO L175 Difference]: Start difference. First operand has 320 places, 399 transitions, 4709 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:25:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 425 transitions, 5691 flow [2024-06-28 03:25:22,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 425 transitions, 5516 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-28 03:25:22,363 INFO L231 Difference]: Finished difference. Result has 325 places, 405 transitions, 4742 flow [2024-06-28 03:25:22,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4742, PETRI_PLACES=325, PETRI_TRANSITIONS=405} [2024-06-28 03:25:22,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-28 03:25:22,363 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 405 transitions, 4742 flow [2024-06-28 03:25:22,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:22,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:22,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:25:22,364 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:22,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1447438571, now seen corresponding path program 1 times [2024-06-28 03:25:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477969976] [2024-06-28 03:25:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477969976] [2024-06-28 03:25:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477969976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:23,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:23,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474103851] [2024-06-28 03:25:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:23,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:23,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 405 transitions, 4742 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:23,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:23,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:23,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:24,587 INFO L124 PetriNetUnfolderBase]: 3761/6061 cut-off events. [2024-06-28 03:25:24,587 INFO L125 PetriNetUnfolderBase]: For 1011746/1011746 co-relation queries the response was YES. [2024-06-28 03:25:24,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57829 conditions, 6061 events. 3761/6061 cut-off events. For 1011746/1011746 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37633 event pairs, 800 based on Foata normal form. 2/6057 useless extension candidates. Maximal degree in co-relation 57677. Up to 5643 conditions per place. [2024-06-28 03:25:24,676 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 356 selfloop transitions, 56 changer transitions 0/430 dead transitions. [2024-06-28 03:25:24,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 430 transitions, 5720 flow [2024-06-28 03:25:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:25:24,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:25:24,677 INFO L175 Difference]: Start difference. First operand has 325 places, 405 transitions, 4742 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:25:24,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 430 transitions, 5720 flow [2024-06-28 03:25:27,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 430 transitions, 5610 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:25:27,319 INFO L231 Difference]: Finished difference. Result has 328 places, 408 transitions, 4846 flow [2024-06-28 03:25:27,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4846, PETRI_PLACES=328, PETRI_TRANSITIONS=408} [2024-06-28 03:25:27,320 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-28 03:25:27,320 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 408 transitions, 4846 flow [2024-06-28 03:25:27,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:27,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:27,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:27,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:25:27,321 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:27,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2022303683, now seen corresponding path program 1 times [2024-06-28 03:25:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:27,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805921481] [2024-06-28 03:25:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805921481] [2024-06-28 03:25:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805921481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:28,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496855912] [2024-06-28 03:25:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:28,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:28,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 408 transitions, 4846 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) [2024-06-28 03:25:28,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:28,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:28,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:29,529 INFO L124 PetriNetUnfolderBase]: 3886/6206 cut-off events. [2024-06-28 03:25:29,530 INFO L125 PetriNetUnfolderBase]: For 1042332/1042332 co-relation queries the response was YES. [2024-06-28 03:25:29,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59614 conditions, 6206 events. 3886/6206 cut-off events. For 1042332/1042332 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 38132 event pairs, 834 based on Foata normal form. 2/6205 useless extension candidates. Maximal degree in co-relation 59461. Up to 5905 conditions per place. [2024-06-28 03:25:29,611 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 384 selfloop transitions, 60 changer transitions 0/448 dead transitions. [2024-06-28 03:25:29,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 448 transitions, 6251 flow [2024-06-28 03:25:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:25:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:25:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:25:29,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:25:29,612 INFO L175 Difference]: Start difference. First operand has 328 places, 408 transitions, 4846 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:25:29,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 448 transitions, 6251 flow [2024-06-28 03:25:32,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 448 transitions, 6073 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:25:32,672 INFO L231 Difference]: Finished difference. Result has 335 places, 428 transitions, 5136 flow [2024-06-28 03:25:32,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5136, PETRI_PLACES=335, PETRI_TRANSITIONS=428} [2024-06-28 03:25:32,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 292 predicate places. [2024-06-28 03:25:32,673 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 428 transitions, 5136 flow [2024-06-28 03:25:32,673 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) [2024-06-28 03:25:32,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:32,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:32,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:25:32,674 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:32,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2022303869, now seen corresponding path program 2 times [2024-06-28 03:25:32,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212454004] [2024-06-28 03:25:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:32,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212454004] [2024-06-28 03:25:33,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212454004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:33,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:33,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129524107] [2024-06-28 03:25:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:33,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:33,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:33,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 428 transitions, 5136 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:33,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:33,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:34,995 INFO L124 PetriNetUnfolderBase]: 3834/6164 cut-off events. [2024-06-28 03:25:34,995 INFO L125 PetriNetUnfolderBase]: For 1081827/1081827 co-relation queries the response was YES. [2024-06-28 03:25:35,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60808 conditions, 6164 events. 3834/6164 cut-off events. For 1081827/1081827 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 38245 event pairs, 805 based on Foata normal form. 2/6164 useless extension candidates. Maximal degree in co-relation 60650. Up to 5636 conditions per place. [2024-06-28 03:25:35,271 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 349 selfloop transitions, 83 changer transitions 0/456 dead transitions. [2024-06-28 03:25:35,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 456 transitions, 6474 flow [2024-06-28 03:25:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:25:35,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-28 03:25:35,272 INFO L175 Difference]: Start difference. First operand has 335 places, 428 transitions, 5136 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:25:35,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 456 transitions, 6474 flow [2024-06-28 03:25:38,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 456 transitions, 6372 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 03:25:38,547 INFO L231 Difference]: Finished difference. Result has 341 places, 434 transitions, 5393 flow [2024-06-28 03:25:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5393, PETRI_PLACES=341, PETRI_TRANSITIONS=434} [2024-06-28 03:25:38,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 03:25:38,550 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 434 transitions, 5393 flow [2024-06-28 03:25:38,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:38,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:38,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:25:38,551 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:38,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1111449543, now seen corresponding path program 3 times [2024-06-28 03:25:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012680698] [2024-06-28 03:25:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:39,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012680698] [2024-06-28 03:25:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012680698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:39,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:39,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:39,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382439729] [2024-06-28 03:25:39,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:39,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:39,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 434 transitions, 5393 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:39,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:39,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:39,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:40,916 INFO L124 PetriNetUnfolderBase]: 3837/6169 cut-off events. [2024-06-28 03:25:40,916 INFO L125 PetriNetUnfolderBase]: For 1102854/1102854 co-relation queries the response was YES. [2024-06-28 03:25:40,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61588 conditions, 6169 events. 3837/6169 cut-off events. For 1102854/1102854 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38285 event pairs, 804 based on Foata normal form. 1/6168 useless extension candidates. Maximal degree in co-relation 61428. Up to 5819 conditions per place. [2024-06-28 03:25:41,017 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 387 selfloop transitions, 41 changer transitions 0/452 dead transitions. [2024-06-28 03:25:41,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 452 transitions, 6339 flow [2024-06-28 03:25:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:25:41,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:25:41,018 INFO L175 Difference]: Start difference. First operand has 341 places, 434 transitions, 5393 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:25:41,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 452 transitions, 6339 flow [2024-06-28 03:25:44,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 452 transitions, 6178 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:44,050 INFO L231 Difference]: Finished difference. Result has 345 places, 437 transitions, 5374 flow [2024-06-28 03:25:44,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5374, PETRI_PLACES=345, PETRI_TRANSITIONS=437} [2024-06-28 03:25:44,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-28 03:25:44,051 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 437 transitions, 5374 flow [2024-06-28 03:25:44,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:44,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:44,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:25:44,051 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)] === [2024-06-28 03:25:44,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1111807035, now seen corresponding path program 2 times [2024-06-28 03:25:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152519061] [2024-06-28 03:25:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152519061] [2024-06-28 03:25:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152519061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592280358] [2024-06-28 03:25:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:44,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:44,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 437 transitions, 5374 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:44,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:44,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:44,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:46,335 INFO L124 PetriNetUnfolderBase]: 3937/6279 cut-off events. [2024-06-28 03:25:46,335 INFO L125 PetriNetUnfolderBase]: For 1134655/1134655 co-relation queries the response was YES. [2024-06-28 03:25:46,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62382 conditions, 6279 events. 3937/6279 cut-off events. For 1134655/1134655 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 38568 event pairs, 833 based on Foata normal form. 4/6281 useless extension candidates. Maximal degree in co-relation 62220. Up to 6055 conditions per place. [2024-06-28 03:25:46,424 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 408 selfloop transitions, 48 changer transitions 0/460 dead transitions. [2024-06-28 03:25:46,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 460 transitions, 6476 flow [2024-06-28 03:25:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:25:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:25:46,426 INFO L175 Difference]: Start difference. First operand has 345 places, 437 transitions, 5374 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:25:46,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 460 transitions, 6476 flow [2024-06-28 03:25:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 460 transitions, 6352 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:25:49,726 INFO L231 Difference]: Finished difference. Result has 347 places, 444 transitions, 5502 flow [2024-06-28 03:25:49,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5250, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5502, PETRI_PLACES=347, PETRI_TRANSITIONS=444} [2024-06-28 03:25:49,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-28 03:25:49,726 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 444 transitions, 5502 flow [2024-06-28 03:25:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:49,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:49,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:49,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:25:49,727 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)] === [2024-06-28 03:25:49,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1845172349, now seen corresponding path program 3 times [2024-06-28 03:25:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:49,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302131714] [2024-06-28 03:25:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:49,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302131714] [2024-06-28 03:25:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302131714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:50,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504307833] [2024-06-28 03:25:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:50,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:50,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:25:50,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 444 transitions, 5502 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:50,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:50,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:25:50,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:51,931 INFO L124 PetriNetUnfolderBase]: 3863/6211 cut-off events. [2024-06-28 03:25:51,932 INFO L125 PetriNetUnfolderBase]: For 1150397/1150397 co-relation queries the response was YES. [2024-06-28 03:25:51,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62688 conditions, 6211 events. 3863/6211 cut-off events. For 1150397/1150397 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 38576 event pairs, 804 based on Foata normal form. 2/6211 useless extension candidates. Maximal degree in co-relation 62525. Up to 5859 conditions per place. [2024-06-28 03:25:52,028 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 396 selfloop transitions, 42 changer transitions 0/464 dead transitions. [2024-06-28 03:25:52,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 464 transitions, 6522 flow [2024-06-28 03:25:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:25:52,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:25:52,030 INFO L175 Difference]: Start difference. First operand has 347 places, 444 transitions, 5502 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:25:52,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 464 transitions, 6522 flow [2024-06-28 03:25:55,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 464 transitions, 6356 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:55,861 INFO L231 Difference]: Finished difference. Result has 351 places, 447 transitions, 5508 flow [2024-06-28 03:25:55,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5508, PETRI_PLACES=351, PETRI_TRANSITIONS=447} [2024-06-28 03:25:55,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-28 03:25:55,862 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 447 transitions, 5508 flow [2024-06-28 03:25:55,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:55,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:55,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:55,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:25:55,862 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)] === [2024-06-28 03:25:55,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:55,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1111569885, now seen corresponding path program 3 times [2024-06-28 03:25:55,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:55,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669500294] [2024-06-28 03:25:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:55,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669500294] [2024-06-28 03:25:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669500294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:56,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:56,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:56,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840119311] [2024-06-28 03:25:56,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:56,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:56,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:56,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:56,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:56,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:25:56,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 447 transitions, 5508 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:56,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:56,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:25:56,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:58,258 INFO L124 PetriNetUnfolderBase]: 3967/6327 cut-off events. [2024-06-28 03:25:58,259 INFO L125 PetriNetUnfolderBase]: For 1179089/1179089 co-relation queries the response was YES. [2024-06-28 03:25:58,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63554 conditions, 6327 events. 3967/6327 cut-off events. For 1179089/1179089 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 38956 event pairs, 831 based on Foata normal form. 4/6329 useless extension candidates. Maximal degree in co-relation 63390. Up to 6059 conditions per place. [2024-06-28 03:25:58,355 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 406 selfloop transitions, 60 changer transitions 0/470 dead transitions. [2024-06-28 03:25:58,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 470 transitions, 6645 flow [2024-06-28 03:25:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:25:58,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:25:58,356 INFO L175 Difference]: Start difference. First operand has 351 places, 447 transitions, 5508 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:25:58,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 470 transitions, 6645 flow [2024-06-28 03:26:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 470 transitions, 6505 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:00,912 INFO L231 Difference]: Finished difference. Result has 353 places, 453 transitions, 5646 flow [2024-06-28 03:26:00,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5646, PETRI_PLACES=353, PETRI_TRANSITIONS=453} [2024-06-28 03:26:00,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 03:26:00,912 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 453 transitions, 5646 flow [2024-06-28 03:26:00,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:00,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:00,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:00,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:26:00,913 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)] === [2024-06-28 03:26:00,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2140753691, now seen corresponding path program 1 times [2024-06-28 03:26:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:00,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871443550] [2024-06-28 03:26:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871443550] [2024-06-28 03:26:01,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871443550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:01,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:01,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187563681] [2024-06-28 03:26:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:01,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:01,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:02,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:02,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 453 transitions, 5646 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:02,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:02,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:02,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:03,589 INFO L124 PetriNetUnfolderBase]: 3893/6253 cut-off events. [2024-06-28 03:26:03,590 INFO L125 PetriNetUnfolderBase]: For 1194949/1194949 co-relation queries the response was YES. [2024-06-28 03:26:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63806 conditions, 6253 events. 3893/6253 cut-off events. For 1194949/1194949 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 38829 event pairs, 674 based on Foata normal form. 2/6253 useless extension candidates. Maximal degree in co-relation 63641. Up to 5837 conditions per place. [2024-06-28 03:26:03,681 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 410 selfloop transitions, 45 changer transitions 0/483 dead transitions. [2024-06-28 03:26:03,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 483 transitions, 6930 flow [2024-06-28 03:26:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:26:03,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:26:03,682 INFO L175 Difference]: Start difference. First operand has 353 places, 453 transitions, 5646 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:26:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 483 transitions, 6930 flow [2024-06-28 03:26:07,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 483 transitions, 6711 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:07,290 INFO L231 Difference]: Finished difference. Result has 355 places, 457 transitions, 5618 flow [2024-06-28 03:26:07,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5618, PETRI_PLACES=355, PETRI_TRANSITIONS=457} [2024-06-28 03:26:07,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-28 03:26:07,290 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 457 transitions, 5618 flow [2024-06-28 03:26:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:07,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:07,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:26:07,291 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)] === [2024-06-28 03:26:07,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash 816227367, now seen corresponding path program 2 times [2024-06-28 03:26:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712640869] [2024-06-28 03:26:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712640869] [2024-06-28 03:26:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712640869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:08,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:08,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023128117] [2024-06-28 03:26:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:08,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:08,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 457 transitions, 5618 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:08,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:08,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:10,070 INFO L124 PetriNetUnfolderBase]: 3900/6268 cut-off events. [2024-06-28 03:26:10,071 INFO L125 PetriNetUnfolderBase]: For 1215988/1215988 co-relation queries the response was YES. [2024-06-28 03:26:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64075 conditions, 6268 events. 3900/6268 cut-off events. For 1215988/1215988 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 39050 event pairs, 810 based on Foata normal form. 2/6268 useless extension candidates. Maximal degree in co-relation 63909. Up to 5895 conditions per place. [2024-06-28 03:26:10,159 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 410 selfloop transitions, 42 changer transitions 0/480 dead transitions. [2024-06-28 03:26:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 480 transitions, 6632 flow [2024-06-28 03:26:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:26:10,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:26:10,160 INFO L175 Difference]: Start difference. First operand has 355 places, 457 transitions, 5618 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:26:10,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 480 transitions, 6632 flow [2024-06-28 03:26:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 480 transitions, 6499 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:14,002 INFO L231 Difference]: Finished difference. Result has 359 places, 459 transitions, 5628 flow [2024-06-28 03:26:14,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5628, PETRI_PLACES=359, PETRI_TRANSITIONS=459} [2024-06-28 03:26:14,002 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-28 03:26:14,002 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 459 transitions, 5628 flow [2024-06-28 03:26:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:14,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:14,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:14,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:26:14,003 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)] === [2024-06-28 03:26:14,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:14,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1111446567, now seen corresponding path program 3 times [2024-06-28 03:26:14,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:14,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451092607] [2024-06-28 03:26:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:14,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451092607] [2024-06-28 03:26:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451092607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990337814] [2024-06-28 03:26:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:15,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:15,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:15,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 459 transitions, 5628 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:15,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:15,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:15,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:16,844 INFO L124 PetriNetUnfolderBase]: 3907/6277 cut-off events. [2024-06-28 03:26:16,844 INFO L125 PetriNetUnfolderBase]: For 1236856/1236856 co-relation queries the response was YES. [2024-06-28 03:26:16,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64267 conditions, 6277 events. 3907/6277 cut-off events. For 1236856/1236856 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 39090 event pairs, 808 based on Foata normal form. 2/6277 useless extension candidates. Maximal degree in co-relation 64099. Up to 5906 conditions per place. [2024-06-28 03:26:16,935 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 409 selfloop transitions, 40 changer transitions 0/477 dead transitions. [2024-06-28 03:26:16,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 477 transitions, 6604 flow [2024-06-28 03:26:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:26:16,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:26:16,936 INFO L175 Difference]: Start difference. First operand has 359 places, 459 transitions, 5628 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:26:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 477 transitions, 6604 flow [2024-06-28 03:26:19,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 477 transitions, 6501 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:19,287 INFO L231 Difference]: Finished difference. Result has 361 places, 461 transitions, 5648 flow [2024-06-28 03:26:19,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5525, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5648, PETRI_PLACES=361, PETRI_TRANSITIONS=461} [2024-06-28 03:26:19,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-28 03:26:19,288 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 461 transitions, 5648 flow [2024-06-28 03:26:19,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:19,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:19,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:19,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:26:19,288 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)] === [2024-06-28 03:26:19,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926085, now seen corresponding path program 1 times [2024-06-28 03:26:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546651204] [2024-06-28 03:26:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:20,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546651204] [2024-06-28 03:26:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546651204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:20,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:20,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:26:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237620388] [2024-06-28 03:26:20,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:26:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:26:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:26:20,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:20,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 461 transitions, 5648 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:20,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:20,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:20,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:22,098 INFO L124 PetriNetUnfolderBase]: 4011/6393 cut-off events. [2024-06-28 03:26:22,099 INFO L125 PetriNetUnfolderBase]: For 1267475/1267475 co-relation queries the response was YES. [2024-06-28 03:26:22,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65183 conditions, 6393 events. 4011/6393 cut-off events. For 1267475/1267475 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39390 event pairs, 842 based on Foata normal form. 4/6395 useless extension candidates. Maximal degree in co-relation 65014. Up to 6026 conditions per place. [2024-06-28 03:26:22,189 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 416 selfloop transitions, 69 changer transitions 0/489 dead transitions. [2024-06-28 03:26:22,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 489 transitions, 7068 flow [2024-06-28 03:26:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:26:22,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:26:22,190 INFO L175 Difference]: Start difference. First operand has 361 places, 461 transitions, 5648 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:26:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 489 transitions, 7068 flow [2024-06-28 03:26:24,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 489 transitions, 6965 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:24,278 INFO L231 Difference]: Finished difference. Result has 364 places, 467 transitions, 5835 flow [2024-06-28 03:26:24,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5545, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5835, PETRI_PLACES=364, PETRI_TRANSITIONS=467} [2024-06-28 03:26:24,279 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-28 03:26:24,279 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 467 transitions, 5835 flow [2024-06-28 03:26:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:24,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:24,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:26:24,279 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)] === [2024-06-28 03:26:24,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash 435949623, now seen corresponding path program 4 times [2024-06-28 03:26:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215975862] [2024-06-28 03:26:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:25,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215975862] [2024-06-28 03:26:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215975862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:25,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:25,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:25,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077001616] [2024-06-28 03:26:25,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:25,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:25,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:25,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:25,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 467 transitions, 5835 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:25,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:25,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:25,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:26,695 INFO L124 PetriNetUnfolderBase]: 3937/6318 cut-off events. [2024-06-28 03:26:26,695 INFO L125 PetriNetUnfolderBase]: For 1286005/1286007 co-relation queries the response was YES. [2024-06-28 03:26:26,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65536 conditions, 6318 events. 3937/6318 cut-off events. For 1286005/1286007 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 39278 event pairs, 810 based on Foata normal form. 4/6319 useless extension candidates. Maximal degree in co-relation 65366. Up to 5800 conditions per place. [2024-06-28 03:26:26,792 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 389 selfloop transitions, 73 changer transitions 0/490 dead transitions. [2024-06-28 03:26:26,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 490 transitions, 6933 flow [2024-06-28 03:26:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:26:26,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:26:26,793 INFO L175 Difference]: Start difference. First operand has 364 places, 467 transitions, 5835 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:26:26,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 490 transitions, 6933 flow [2024-06-28 03:26:29,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 490 transitions, 6816 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:26:29,141 INFO L231 Difference]: Finished difference. Result has 367 places, 470 transitions, 5982 flow [2024-06-28 03:26:29,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5982, PETRI_PLACES=367, PETRI_TRANSITIONS=470} [2024-06-28 03:26:29,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-28 03:26:29,141 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 470 transitions, 5982 flow [2024-06-28 03:26:29,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:29,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:29,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:26:29,142 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)] === [2024-06-28 03:26:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash 697362307, now seen corresponding path program 5 times [2024-06-28 03:26:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547485454] [2024-06-28 03:26:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547485454] [2024-06-28 03:26:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547485454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:29,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110587] [2024-06-28 03:26:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:30,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:30,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 470 transitions, 5982 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:30,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:30,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:30,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:31,505 INFO L124 PetriNetUnfolderBase]: 3973/6367 cut-off events. [2024-06-28 03:26:31,505 INFO L125 PetriNetUnfolderBase]: For 1333212/1333214 co-relation queries the response was YES. [2024-06-28 03:26:31,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67258 conditions, 6367 events. 3973/6367 cut-off events. For 1333212/1333214 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39598 event pairs, 811 based on Foata normal form. 4/6368 useless extension candidates. Maximal degree in co-relation 67086. Up to 5652 conditions per place. [2024-06-28 03:26:31,614 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 357 selfloop transitions, 117 changer transitions 0/502 dead transitions. [2024-06-28 03:26:31,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 502 transitions, 8022 flow [2024-06-28 03:26:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:26:31,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:26:31,615 INFO L175 Difference]: Start difference. First operand has 367 places, 470 transitions, 5982 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:26:31,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 502 transitions, 8022 flow [2024-06-28 03:26:35,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 502 transitions, 7784 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:35,138 INFO L231 Difference]: Finished difference. Result has 369 places, 479 transitions, 6320 flow [2024-06-28 03:26:35,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5744, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6320, PETRI_PLACES=369, PETRI_TRANSITIONS=479} [2024-06-28 03:26:35,139 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-06-28 03:26:35,139 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 479 transitions, 6320 flow [2024-06-28 03:26:35,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:35,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:35,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:35,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:26:35,140 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:35,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash 436069779, now seen corresponding path program 4 times [2024-06-28 03:26:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251113111] [2024-06-28 03:26:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:35,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:35,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251113111] [2024-06-28 03:26:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251113111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:35,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522233404] [2024-06-28 03:26:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:35,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:35,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 479 transitions, 6320 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) [2024-06-28 03:26:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:37,519 INFO L124 PetriNetUnfolderBase]: 4089/6498 cut-off events. [2024-06-28 03:26:37,519 INFO L125 PetriNetUnfolderBase]: For 1380244/1380246 co-relation queries the response was YES. [2024-06-28 03:26:37,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69289 conditions, 6498 events. 4089/6498 cut-off events. For 1380244/1380246 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 39943 event pairs, 847 based on Foata normal form. 4/6499 useless extension candidates. Maximal degree in co-relation 69116. Up to 6034 conditions per place. [2024-06-28 03:26:37,613 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 398 selfloop transitions, 108 changer transitions 0/510 dead transitions. [2024-06-28 03:26:37,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 510 transitions, 8160 flow [2024-06-28 03:26:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:26:37,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:26:37,615 INFO L175 Difference]: Start difference. First operand has 369 places, 479 transitions, 6320 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:26:37,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 510 transitions, 8160 flow [2024-06-28 03:26:40,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 510 transitions, 7888 flow, removed 90 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:40,840 INFO L231 Difference]: Finished difference. Result has 375 places, 488 transitions, 6558 flow [2024-06-28 03:26:40,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6048, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6558, PETRI_PLACES=375, PETRI_TRANSITIONS=488} [2024-06-28 03:26:40,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-28 03:26:40,841 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 488 transitions, 6558 flow [2024-06-28 03:26:40,841 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) [2024-06-28 03:26:40,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:40,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:40,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:26:40,842 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:40,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 925143487, now seen corresponding path program 6 times [2024-06-28 03:26:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859784741] [2024-06-28 03:26:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:41,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859784741] [2024-06-28 03:26:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859784741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:41,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:41,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138814403] [2024-06-28 03:26:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:41,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:41,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 488 transitions, 6558 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:41,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:43,387 INFO L124 PetriNetUnfolderBase]: 4014/6433 cut-off events. [2024-06-28 03:26:43,387 INFO L125 PetriNetUnfolderBase]: For 1410043/1410045 co-relation queries the response was YES. [2024-06-28 03:26:43,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69536 conditions, 6433 events. 4014/6433 cut-off events. For 1410043/1410045 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40075 event pairs, 821 based on Foata normal form. 4/6434 useless extension candidates. Maximal degree in co-relation 69361. Up to 5854 conditions per place. [2024-06-28 03:26:43,480 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 395 selfloop transitions, 90 changer transitions 0/516 dead transitions. [2024-06-28 03:26:43,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 516 transitions, 7934 flow [2024-06-28 03:26:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:26:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:26:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 03:26:43,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-06-28 03:26:43,482 INFO L175 Difference]: Start difference. First operand has 375 places, 488 transitions, 6558 flow. Second operand 10 states and 181 transitions. [2024-06-28 03:26:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 516 transitions, 7934 flow [2024-06-28 03:26:47,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 516 transitions, 7686 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:47,607 INFO L231 Difference]: Finished difference. Result has 382 places, 491 transitions, 6587 flow [2024-06-28 03:26:47,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6310, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6587, PETRI_PLACES=382, PETRI_TRANSITIONS=491} [2024-06-28 03:26:47,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-28 03:26:47,607 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 491 transitions, 6587 flow [2024-06-28 03:26:47,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:47,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:47,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:47,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:26:47,608 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:47,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1047393847, now seen corresponding path program 7 times [2024-06-28 03:26:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:47,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238510374] [2024-06-28 03:26:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238510374] [2024-06-28 03:26:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238510374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:48,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326356717] [2024-06-28 03:26:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:48,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:26:48,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 491 transitions, 6587 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:48,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:48,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:26:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:50,202 INFO L124 PetriNetUnfolderBase]: 4009/6420 cut-off events. [2024-06-28 03:26:50,203 INFO L125 PetriNetUnfolderBase]: For 1417851/1417853 co-relation queries the response was YES. [2024-06-28 03:26:50,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69420 conditions, 6420 events. 4009/6420 cut-off events. For 1417851/1417853 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 39941 event pairs, 816 based on Foata normal form. 4/6421 useless extension candidates. Maximal degree in co-relation 69242. Up to 5848 conditions per place. [2024-06-28 03:26:50,295 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 389 selfloop transitions, 89 changer transitions 0/509 dead transitions. [2024-06-28 03:26:50,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 509 transitions, 7617 flow [2024-06-28 03:26:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:26:50,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:26:50,296 INFO L175 Difference]: Start difference. First operand has 382 places, 491 transitions, 6587 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:26:50,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 509 transitions, 7617 flow [2024-06-28 03:26:54,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 509 transitions, 7352 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 03:26:54,393 INFO L231 Difference]: Finished difference. Result has 382 places, 491 transitions, 6506 flow [2024-06-28 03:26:54,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6506, PETRI_PLACES=382, PETRI_TRANSITIONS=491} [2024-06-28 03:26:54,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-28 03:26:54,394 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 491 transitions, 6506 flow [2024-06-28 03:26:54,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:54,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:54,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:54,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:26:54,394 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:26:54,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -382817083, now seen corresponding path program 5 times [2024-06-28 03:26:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408371474] [2024-06-28 03:26:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408371474] [2024-06-28 03:26:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408371474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:55,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:55,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:55,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324600985] [2024-06-28 03:26:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:55,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:55,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:26:55,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 491 transitions, 6506 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) [2024-06-28 03:26:55,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:55,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:26:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:56,961 INFO L124 PetriNetUnfolderBase]: 4119/6544 cut-off events. [2024-06-28 03:26:56,962 INFO L125 PetriNetUnfolderBase]: For 1450429/1450431 co-relation queries the response was YES. [2024-06-28 03:26:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70519 conditions, 6544 events. 4119/6544 cut-off events. For 1450429/1450431 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 40327 event pairs, 844 based on Foata normal form. 4/6545 useless extension candidates. Maximal degree in co-relation 70340. Up to 6065 conditions per place. [2024-06-28 03:26:57,052 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 394 selfloop transitions, 118 changer transitions 0/516 dead transitions. [2024-06-28 03:26:57,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 516 transitions, 8194 flow [2024-06-28 03:26:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:26:57,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:26:57,053 INFO L175 Difference]: Start difference. First operand has 382 places, 491 transitions, 6506 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:26:57,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 516 transitions, 8194 flow [2024-06-28 03:27:00,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 516 transitions, 8016 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:27:00,955 INFO L231 Difference]: Finished difference. Result has 383 places, 497 transitions, 6686 flow [2024-06-28 03:27:00,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6328, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6686, PETRI_PLACES=383, PETRI_TRANSITIONS=497} [2024-06-28 03:27:00,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-28 03:27:00,955 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 497 transitions, 6686 flow [2024-06-28 03:27:00,956 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) [2024-06-28 03:27:00,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:00,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:00,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:27:00,957 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -383232793, now seen corresponding path program 6 times [2024-06-28 03:27:00,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563460272] [2024-06-28 03:27:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:01,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:01,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563460272] [2024-06-28 03:27:01,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563460272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:01,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:01,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537774720] [2024-06-28 03:27:01,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:01,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:01,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:01,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 497 transitions, 6686 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) [2024-06-28 03:27:01,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:01,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:01,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:03,450 INFO L124 PetriNetUnfolderBase]: 4113/6536 cut-off events. [2024-06-28 03:27:03,450 INFO L125 PetriNetUnfolderBase]: For 1460640/1460642 co-relation queries the response was YES. [2024-06-28 03:27:03,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70512 conditions, 6536 events. 4113/6536 cut-off events. For 1460640/1460642 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 40308 event pairs, 847 based on Foata normal form. 4/6537 useless extension candidates. Maximal degree in co-relation 70332. Up to 6060 conditions per place. [2024-06-28 03:27:03,560 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 115 changer transitions 0/516 dead transitions. [2024-06-28 03:27:03,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 516 transitions, 8262 flow [2024-06-28 03:27:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:27:03,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:27:03,561 INFO L175 Difference]: Start difference. First operand has 383 places, 497 transitions, 6686 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:27:03,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 516 transitions, 8262 flow [2024-06-28 03:27:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 516 transitions, 8042 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:08,460 INFO L231 Difference]: Finished difference. Result has 387 places, 497 transitions, 6702 flow [2024-06-28 03:27:08,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6702, PETRI_PLACES=387, PETRI_TRANSITIONS=497} [2024-06-28 03:27:08,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-28 03:27:08,461 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 497 transitions, 6702 flow [2024-06-28 03:27:08,461 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) [2024-06-28 03:27:08,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:08,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:27:08,461 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)] === [2024-06-28 03:27:08,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 790332633, now seen corresponding path program 8 times [2024-06-28 03:27:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502558253] [2024-06-28 03:27:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502558253] [2024-06-28 03:27:09,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502558253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:09,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:09,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:09,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460121726] [2024-06-28 03:27:09,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:09,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:09,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:09,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:27:09,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 497 transitions, 6702 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:09,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:09,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:27:09,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:10,951 INFO L124 PetriNetUnfolderBase]: 4051/6486 cut-off events. [2024-06-28 03:27:10,951 INFO L125 PetriNetUnfolderBase]: For 1501197/1501199 co-relation queries the response was YES. [2024-06-28 03:27:11,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70752 conditions, 6486 events. 4051/6486 cut-off events. For 1501197/1501199 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 40436 event pairs, 815 based on Foata normal form. 4/6487 useless extension candidates. Maximal degree in co-relation 70571. Up to 5736 conditions per place. [2024-06-28 03:27:11,066 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 348 selfloop transitions, 141 changer transitions 0/522 dead transitions. [2024-06-28 03:27:11,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 522 transitions, 8408 flow [2024-06-28 03:27:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:27:11,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:27:11,067 INFO L175 Difference]: Start difference. First operand has 387 places, 497 transitions, 6702 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:27:11,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 522 transitions, 8408 flow [2024-06-28 03:27:16,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 522 transitions, 8177 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:16,272 INFO L231 Difference]: Finished difference. Result has 391 places, 503 transitions, 6931 flow [2024-06-28 03:27:16,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6931, PETRI_PLACES=391, PETRI_TRANSITIONS=503} [2024-06-28 03:27:16,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-28 03:27:16,273 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 503 transitions, 6931 flow [2024-06-28 03:27:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:16,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:16,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:16,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:27:16,273 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:16,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1051862497, now seen corresponding path program 9 times [2024-06-28 03:27:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:16,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713009491] [2024-06-28 03:27:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:16,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:17,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713009491] [2024-06-28 03:27:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713009491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:17,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:17,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142536077] [2024-06-28 03:27:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:17,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:27:17,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 503 transitions, 6931 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:17,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:17,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:27:17,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:18,725 INFO L124 PetriNetUnfolderBase]: 4050/6483 cut-off events. [2024-06-28 03:27:18,725 INFO L125 PetriNetUnfolderBase]: For 1511412/1511414 co-relation queries the response was YES. [2024-06-28 03:27:18,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70744 conditions, 6483 events. 4050/6483 cut-off events. For 1511412/1511414 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 40433 event pairs, 819 based on Foata normal form. 4/6484 useless extension candidates. Maximal degree in co-relation 70562. Up to 5732 conditions per place. [2024-06-28 03:27:18,826 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 347 selfloop transitions, 141 changer transitions 0/521 dead transitions. [2024-06-28 03:27:18,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 521 transitions, 8233 flow [2024-06-28 03:27:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:27:18,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 03:27:18,828 INFO L175 Difference]: Start difference. First operand has 391 places, 503 transitions, 6931 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:27:18,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 521 transitions, 8233 flow [2024-06-28 03:27:23,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 521 transitions, 7906 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 03:27:23,339 INFO L231 Difference]: Finished difference. Result has 394 places, 503 transitions, 6892 flow [2024-06-28 03:27:23,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6892, PETRI_PLACES=394, PETRI_TRANSITIONS=503} [2024-06-28 03:27:23,339 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-28 03:27:23,340 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 503 transitions, 6892 flow [2024-06-28 03:27:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:23,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:27:23,340 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:23,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1102632799, now seen corresponding path program 10 times [2024-06-28 03:27:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183194898] [2024-06-28 03:27:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:23,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183194898] [2024-06-28 03:27:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183194898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:24,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:24,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175543779] [2024-06-28 03:27:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:24,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:24,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:24,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:27:24,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 503 transitions, 6892 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:24,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:24,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:27:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:25,824 INFO L124 PetriNetUnfolderBase]: 4051/6494 cut-off events. [2024-06-28 03:27:25,824 INFO L125 PetriNetUnfolderBase]: For 1535306/1535308 co-relation queries the response was YES. [2024-06-28 03:27:25,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70891 conditions, 6494 events. 4051/6494 cut-off events. For 1535306/1535308 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 40572 event pairs, 812 based on Foata normal form. 4/6495 useless extension candidates. Maximal degree in co-relation 70708. Up to 6060 conditions per place. [2024-06-28 03:27:25,934 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 432 selfloop transitions, 56 changer transitions 0/521 dead transitions. [2024-06-28 03:27:25,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 521 transitions, 8497 flow [2024-06-28 03:27:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:27:25,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 03:27:25,936 INFO L175 Difference]: Start difference. First operand has 394 places, 503 transitions, 6892 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:27:25,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 521 transitions, 8497 flow [2024-06-28 03:27:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 521 transitions, 8187 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:27:29,946 INFO L231 Difference]: Finished difference. Result has 394 places, 506 transitions, 6789 flow [2024-06-28 03:27:29,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6789, PETRI_PLACES=394, PETRI_TRANSITIONS=506} [2024-06-28 03:27:29,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-28 03:27:29,947 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 506 transitions, 6789 flow [2024-06-28 03:27:29,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:29,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:29,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:29,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:27:29,947 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:29,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1150726137, now seen corresponding path program 11 times [2024-06-28 03:27:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675553903] [2024-06-28 03:27:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:30,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675553903] [2024-06-28 03:27:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675553903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278563475] [2024-06-28 03:27:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:30,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:30,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:27:30,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 506 transitions, 6789 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:30,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:30,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:27:30,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:32,420 INFO L124 PetriNetUnfolderBase]: 4049/6486 cut-off events. [2024-06-28 03:27:32,420 INFO L125 PetriNetUnfolderBase]: For 1543327/1543329 co-relation queries the response was YES. [2024-06-28 03:27:32,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70463 conditions, 6486 events. 4049/6486 cut-off events. For 1543327/1543329 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 40470 event pairs, 821 based on Foata normal form. 4/6487 useless extension candidates. Maximal degree in co-relation 70280. Up to 6118 conditions per place. [2024-06-28 03:27:32,523 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 450 selfloop transitions, 35 changer transitions 0/518 dead transitions. [2024-06-28 03:27:32,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 518 transitions, 7813 flow [2024-06-28 03:27:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:27:32,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:27:32,525 INFO L175 Difference]: Start difference. First operand has 394 places, 506 transitions, 6789 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:27:32,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 518 transitions, 7813 flow [2024-06-28 03:27:37,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 518 transitions, 7481 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:37,326 INFO L231 Difference]: Finished difference. Result has 396 places, 506 transitions, 6533 flow [2024-06-28 03:27:37,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6457, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6533, PETRI_PLACES=396, PETRI_TRANSITIONS=506} [2024-06-28 03:27:37,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-28 03:27:37,327 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 506 transitions, 6533 flow [2024-06-28 03:27:37,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:37,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:37,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:37,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:27:37,328 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:37,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash -745277571, now seen corresponding path program 7 times [2024-06-28 03:27:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:37,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516097725] [2024-06-28 03:27:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:37,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:38,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516097725] [2024-06-28 03:27:38,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516097725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:38,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:38,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:27:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421549737] [2024-06-28 03:27:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:27:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:27:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:27:38,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:38,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 506 transitions, 6533 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:38,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:38,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:38,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:39,816 INFO L124 PetriNetUnfolderBase]: 4163/6610 cut-off events. [2024-06-28 03:27:39,817 INFO L125 PetriNetUnfolderBase]: For 1575792/1575794 co-relation queries the response was YES. [2024-06-28 03:27:39,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71461 conditions, 6610 events. 4163/6610 cut-off events. For 1575792/1575794 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 40744 event pairs, 848 based on Foata normal form. 4/6611 useless extension candidates. Maximal degree in co-relation 71277. Up to 6353 conditions per place. [2024-06-28 03:27:39,921 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 465 selfloop transitions, 56 changer transitions 0/525 dead transitions. [2024-06-28 03:27:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 525 transitions, 7998 flow [2024-06-28 03:27:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:27:39,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:27:39,922 INFO L175 Difference]: Start difference. First operand has 396 places, 506 transitions, 6533 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:27:39,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 525 transitions, 7998 flow [2024-06-28 03:27:44,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 525 transitions, 7842 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:27:44,655 INFO L231 Difference]: Finished difference. Result has 397 places, 512 transitions, 6653 flow [2024-06-28 03:27:44,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6377, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6653, PETRI_PLACES=397, PETRI_TRANSITIONS=512} [2024-06-28 03:27:44,656 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-28 03:27:44,656 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 512 transitions, 6653 flow [2024-06-28 03:27:44,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:44,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:44,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:44,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:27:44,657 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)] === [2024-06-28 03:27:44,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -700927449, now seen corresponding path program 4 times [2024-06-28 03:27:44,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:44,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342394454] [2024-06-28 03:27:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:44,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342394454] [2024-06-28 03:27:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342394454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871962213] [2024-06-28 03:27:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:45,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:27:45,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 512 transitions, 6653 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:45,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:45,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:27:45,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:47,148 INFO L124 PetriNetUnfolderBase]: 4073/6519 cut-off events. [2024-06-28 03:27:47,149 INFO L125 PetriNetUnfolderBase]: For 1587729/1587729 co-relation queries the response was YES. [2024-06-28 03:27:47,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71035 conditions, 6519 events. 4073/6519 cut-off events. For 1587729/1587729 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 40640 event pairs, 834 based on Foata normal form. 1/6517 useless extension candidates. Maximal degree in co-relation 70849. Up to 6115 conditions per place. [2024-06-28 03:27:47,246 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 449 selfloop transitions, 38 changer transitions 0/522 dead transitions. [2024-06-28 03:27:47,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 522 transitions, 7653 flow [2024-06-28 03:27:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:27:47,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:27:47,247 INFO L175 Difference]: Start difference. First operand has 397 places, 512 transitions, 6653 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:27:47,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 522 transitions, 7653 flow [2024-06-28 03:27:53,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 522 transitions, 7496 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:27:53,097 INFO L231 Difference]: Finished difference. Result has 401 places, 512 transitions, 6578 flow [2024-06-28 03:27:53,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6496, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6578, PETRI_PLACES=401, PETRI_TRANSITIONS=512} [2024-06-28 03:27:53,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-28 03:27:53,098 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 512 transitions, 6578 flow [2024-06-28 03:27:53,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:53,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:53,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:27:53,098 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:53,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash -750991491, now seen corresponding path program 8 times [2024-06-28 03:27:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3706829] [2024-06-28 03:27:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:53,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3706829] [2024-06-28 03:27:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3706829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:53,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:53,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:53,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125257148] [2024-06-28 03:27:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:53,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:53,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:27:53,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 512 transitions, 6578 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) [2024-06-28 03:27:53,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:53,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:27:53,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:55,566 INFO L124 PetriNetUnfolderBase]: 4170/6624 cut-off events. [2024-06-28 03:27:55,566 INFO L125 PetriNetUnfolderBase]: For 1615579/1615581 co-relation queries the response was YES. [2024-06-28 03:27:55,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71779 conditions, 6624 events. 4170/6624 cut-off events. For 1615579/1615581 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 40945 event pairs, 848 based on Foata normal form. 4/6625 useless extension candidates. Maximal degree in co-relation 71592. Up to 6389 conditions per place. [2024-06-28 03:27:55,664 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 475 selfloop transitions, 48 changer transitions 0/527 dead transitions. [2024-06-28 03:27:55,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 527 transitions, 7734 flow [2024-06-28 03:27:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 03:27:55,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 03:27:55,684 INFO L175 Difference]: Start difference. First operand has 401 places, 512 transitions, 6578 flow. Second operand 9 states and 141 transitions. [2024-06-28 03:27:55,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 527 transitions, 7734 flow [2024-06-28 03:28:01,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 527 transitions, 7604 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:28:01,036 INFO L231 Difference]: Finished difference. Result has 402 places, 516 transitions, 6626 flow [2024-06-28 03:28:01,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6448, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6626, PETRI_PLACES=402, PETRI_TRANSITIONS=516} [2024-06-28 03:28:01,037 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-28 03:28:01,037 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 516 transitions, 6626 flow [2024-06-28 03:28:01,037 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) [2024-06-28 03:28:01,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:01,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:28:01,037 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:01,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1150488801, now seen corresponding path program 9 times [2024-06-28 03:28:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957746805] [2024-06-28 03:28:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957746805] [2024-06-28 03:28:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957746805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:01,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950663947] [2024-06-28 03:28:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:01,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:01,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:01,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:01,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 516 transitions, 6626 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) [2024-06-28 03:28:01,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:01,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:01,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:03,530 INFO L124 PetriNetUnfolderBase]: 4164/6616 cut-off events. [2024-06-28 03:28:03,530 INFO L125 PetriNetUnfolderBase]: For 1624825/1624827 co-relation queries the response was YES. [2024-06-28 03:28:03,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71658 conditions, 6616 events. 4164/6616 cut-off events. For 1624825/1624827 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 40895 event pairs, 847 based on Foata normal form. 4/6617 useless extension candidates. Maximal degree in co-relation 71470. Up to 6381 conditions per place. [2024-06-28 03:28:03,627 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 478 selfloop transitions, 45 changer transitions 0/527 dead transitions. [2024-06-28 03:28:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 527 transitions, 7712 flow [2024-06-28 03:28:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 03:28:03,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 03:28:03,629 INFO L175 Difference]: Start difference. First operand has 402 places, 516 transitions, 6626 flow. Second operand 9 states and 142 transitions. [2024-06-28 03:28:03,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 527 transitions, 7712 flow [2024-06-28 03:28:09,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 527 transitions, 7564 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:09,697 INFO L231 Difference]: Finished difference. Result has 405 places, 516 transitions, 6574 flow [2024-06-28 03:28:09,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6574, PETRI_PLACES=405, PETRI_TRANSITIONS=516} [2024-06-28 03:28:09,697 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-28 03:28:09,697 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 516 transitions, 6574 flow [2024-06-28 03:28:09,697 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) [2024-06-28 03:28:09,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:09,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:09,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:28:09,698 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:09,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash -973594431, now seen corresponding path program 10 times [2024-06-28 03:28:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:09,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550076708] [2024-06-28 03:28:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:09,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550076708] [2024-06-28 03:28:10,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550076708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684321430] [2024-06-28 03:28:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:10,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:10,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:10,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 516 transitions, 6574 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) [2024-06-28 03:28:10,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:10,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:10,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:12,258 INFO L124 PetriNetUnfolderBase]: 4174/6644 cut-off events. [2024-06-28 03:28:12,259 INFO L125 PetriNetUnfolderBase]: For 1649017/1649019 co-relation queries the response was YES. [2024-06-28 03:28:12,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71921 conditions, 6644 events. 4174/6644 cut-off events. For 1649017/1649019 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 41239 event pairs, 845 based on Foata normal form. 4/6645 useless extension candidates. Maximal degree in co-relation 71732. Up to 6284 conditions per place. [2024-06-28 03:28:12,356 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 442 selfloop transitions, 88 changer transitions 0/534 dead transitions. [2024-06-28 03:28:12,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 534 transitions, 8265 flow [2024-06-28 03:28:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:28:12,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 03:28:12,358 INFO L175 Difference]: Start difference. First operand has 405 places, 516 transitions, 6574 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:28:12,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 534 transitions, 8265 flow [2024-06-28 03:28:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 534 transitions, 8112 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:28:18,692 INFO L231 Difference]: Finished difference. Result has 405 places, 519 transitions, 6670 flow [2024-06-28 03:28:18,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6421, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6670, PETRI_PLACES=405, PETRI_TRANSITIONS=519} [2024-06-28 03:28:18,693 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-28 03:28:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 519 transitions, 6670 flow [2024-06-28 03:28:18,693 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) [2024-06-28 03:28:18,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:18,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:28:18,694 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -973357467, now seen corresponding path program 12 times [2024-06-28 03:28:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723346594] [2024-06-28 03:28:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:19,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723346594] [2024-06-28 03:28:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723346594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:19,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:19,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274656813] [2024-06-28 03:28:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:19,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:28:19,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 519 transitions, 6670 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:19,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:19,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:28:19,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:21,216 INFO L124 PetriNetUnfolderBase]: 4070/6538 cut-off events. [2024-06-28 03:28:21,217 INFO L125 PetriNetUnfolderBase]: For 1660892/1660894 co-relation queries the response was YES. [2024-06-28 03:28:21,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71249 conditions, 6538 events. 4070/6538 cut-off events. For 1660892/1660894 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 41047 event pairs, 812 based on Foata normal form. 4/6539 useless extension candidates. Maximal degree in co-relation 71059. Up to 6088 conditions per place. [2024-06-28 03:28:21,314 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 435 selfloop transitions, 60 changer transitions 0/532 dead transitions. [2024-06-28 03:28:21,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 532 transitions, 7728 flow [2024-06-28 03:28:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:28:21,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:28:21,316 INFO L175 Difference]: Start difference. First operand has 405 places, 519 transitions, 6670 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:28:21,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 532 transitions, 7728 flow [2024-06-28 03:28:26,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 532 transitions, 7379 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:26,856 INFO L231 Difference]: Finished difference. Result has 406 places, 519 transitions, 6447 flow [2024-06-28 03:28:26,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6447, PETRI_PLACES=406, PETRI_TRANSITIONS=519} [2024-06-28 03:28:26,857 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 363 predicate places. [2024-06-28 03:28:26,857 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 519 transitions, 6447 flow [2024-06-28 03:28:26,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:26,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:26,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:28:26,857 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:26,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -523259877, now seen corresponding path program 11 times [2024-06-28 03:28:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782639244] [2024-06-28 03:28:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782639244] [2024-06-28 03:28:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782639244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:27,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403851946] [2024-06-28 03:28:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:27,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:27,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:27,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 519 transitions, 6447 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) [2024-06-28 03:28:27,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:27,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:29,572 INFO L124 PetriNetUnfolderBase]: 4162/6622 cut-off events. [2024-06-28 03:28:29,572 INFO L125 PetriNetUnfolderBase]: For 1664268/1664270 co-relation queries the response was YES. [2024-06-28 03:28:29,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71487 conditions, 6622 events. 4162/6622 cut-off events. For 1664268/1664270 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 41040 event pairs, 830 based on Foata normal form. 4/6623 useless extension candidates. Maximal degree in co-relation 71296. Up to 6271 conditions per place. [2024-06-28 03:28:29,677 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 438 selfloop transitions, 91 changer transitions 0/533 dead transitions. [2024-06-28 03:28:29,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 533 transitions, 7825 flow [2024-06-28 03:28:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:28:29,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:28:29,678 INFO L175 Difference]: Start difference. First operand has 406 places, 519 transitions, 6447 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:28:29,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 533 transitions, 7825 flow [2024-06-28 03:28:35,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 533 transitions, 7663 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:28:35,218 INFO L231 Difference]: Finished difference. Result has 408 places, 519 transitions, 6473 flow [2024-06-28 03:28:35,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6285, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6473, PETRI_PLACES=408, PETRI_TRANSITIONS=519} [2024-06-28 03:28:35,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-28 03:28:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 519 transitions, 6473 flow [2024-06-28 03:28:35,219 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) [2024-06-28 03:28:35,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:35,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:35,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:28:35,219 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:35,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1317377847, now seen corresponding path program 12 times [2024-06-28 03:28:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386187425] [2024-06-28 03:28:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:35,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:35,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386187425] [2024-06-28 03:28:35,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386187425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:35,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:35,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:35,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316337373] [2024-06-28 03:28:35,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:35,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:36,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 519 transitions, 6473 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:36,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:36,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:37,757 INFO L124 PetriNetUnfolderBase]: 4156/6610 cut-off events. [2024-06-28 03:28:37,758 INFO L125 PetriNetUnfolderBase]: For 1672400/1672402 co-relation queries the response was YES. [2024-06-28 03:28:37,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71397 conditions, 6610 events. 4156/6610 cut-off events. For 1672400/1672402 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 40918 event pairs, 840 based on Foata normal form. 4/6611 useless extension candidates. Maximal degree in co-relation 71205. Up to 6351 conditions per place. [2024-06-28 03:28:37,861 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 476 selfloop transitions, 51 changer transitions 0/531 dead transitions. [2024-06-28 03:28:37,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 531 transitions, 7581 flow [2024-06-28 03:28:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:28:37,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:28:37,862 INFO L175 Difference]: Start difference. First operand has 408 places, 519 transitions, 6473 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:28:37,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 531 transitions, 7581 flow [2024-06-28 03:28:43,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 531 transitions, 7344 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:28:43,165 INFO L231 Difference]: Finished difference. Result has 408 places, 519 transitions, 6344 flow [2024-06-28 03:28:43,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6344, PETRI_PLACES=408, PETRI_TRANSITIONS=519} [2024-06-28 03:28:43,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-28 03:28:43,166 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 519 transitions, 6344 flow [2024-06-28 03:28:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:43,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:43,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:28:43,169 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:43,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1150849269, now seen corresponding path program 4 times [2024-06-28 03:28:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554240171] [2024-06-28 03:28:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:44,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554240171] [2024-06-28 03:28:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554240171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425723222] [2024-06-28 03:28:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:44,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:44,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:28:44,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 519 transitions, 6344 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:44,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:44,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:28:44,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:45,979 INFO L124 PetriNetUnfolderBase]: 4060/6510 cut-off events. [2024-06-28 03:28:45,979 INFO L125 PetriNetUnfolderBase]: For 1682716/1682716 co-relation queries the response was YES. [2024-06-28 03:28:46,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70513 conditions, 6510 events. 4060/6510 cut-off events. For 1682716/1682716 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 40713 event pairs, 823 based on Foata normal form. 2/6509 useless extension candidates. Maximal degree in co-relation 70321. Up to 6099 conditions per place. [2024-06-28 03:28:46,084 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 456 selfloop transitions, 37 changer transitions 0/530 dead transitions. [2024-06-28 03:28:46,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 530 transitions, 7358 flow [2024-06-28 03:28:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:28:46,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 03:28:46,087 INFO L175 Difference]: Start difference. First operand has 408 places, 519 transitions, 6344 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:28:46,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 530 transitions, 7358 flow [2024-06-28 03:28:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 530 transitions, 7166 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:28:53,395 INFO L231 Difference]: Finished difference. Result has 408 places, 519 transitions, 6231 flow [2024-06-28 03:28:53,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6152, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6231, PETRI_PLACES=408, PETRI_TRANSITIONS=519} [2024-06-28 03:28:53,395 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-28 03:28:53,395 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 519 transitions, 6231 flow [2024-06-28 03:28:53,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:53,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:53,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:53,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:28:53,396 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)] === [2024-06-28 03:28:53,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1317623925, now seen corresponding path program 2 times [2024-06-28 03:28:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536318390] [2024-06-28 03:28:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:53,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:54,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:54,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536318390] [2024-06-28 03:28:54,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536318390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:54,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:54,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311044724] [2024-06-28 03:28:54,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:54,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:54,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:28:54,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 519 transitions, 6231 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:54,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:54,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:28:54,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:56,171 INFO L124 PetriNetUnfolderBase]: 4171/6627 cut-off events. [2024-06-28 03:28:56,171 INFO L125 PetriNetUnfolderBase]: For 1721007/1721007 co-relation queries the response was YES. [2024-06-28 03:28:56,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71404 conditions, 6627 events. 4171/6627 cut-off events. For 1721007/1721007 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 40998 event pairs, 855 based on Foata normal form. 4/6628 useless extension candidates. Maximal degree in co-relation 71211. Up to 6239 conditions per place. [2024-06-28 03:28:56,274 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 470 selfloop transitions, 67 changer transitions 0/541 dead transitions. [2024-06-28 03:28:56,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 541 transitions, 7733 flow [2024-06-28 03:28:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:28:56,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:28:56,276 INFO L175 Difference]: Start difference. First operand has 408 places, 519 transitions, 6231 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:28:56,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 541 transitions, 7733 flow [2024-06-28 03:29:02,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 541 transitions, 7639 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:02,138 INFO L231 Difference]: Finished difference. Result has 410 places, 522 transitions, 6351 flow [2024-06-28 03:29:02,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6137, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6351, PETRI_PLACES=410, PETRI_TRANSITIONS=522} [2024-06-28 03:29:02,139 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-28 03:29:02,139 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 522 transitions, 6351 flow [2024-06-28 03:29:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:02,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:02,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:02,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:29:02,139 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)] === [2024-06-28 03:29:02,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash -737172993, now seen corresponding path program 3 times [2024-06-28 03:29:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269871081] [2024-06-28 03:29:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269871081] [2024-06-28 03:29:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269871081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:03,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894395104] [2024-06-28 03:29:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:03,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:03,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:29:03,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 522 transitions, 6351 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:03,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:03,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:29:03,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:05,085 INFO L124 PetriNetUnfolderBase]: 4223/6703 cut-off events. [2024-06-28 03:29:05,085 INFO L125 PetriNetUnfolderBase]: For 1782772/1782772 co-relation queries the response was YES. [2024-06-28 03:29:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72905 conditions, 6703 events. 4223/6703 cut-off events. For 1782772/1782772 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 41427 event pairs, 859 based on Foata normal form. 4/6704 useless extension candidates. Maximal degree in co-relation 72711. Up to 6279 conditions per place. [2024-06-28 03:29:05,191 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 460 selfloop transitions, 83 changer transitions 0/547 dead transitions. [2024-06-28 03:29:05,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 547 transitions, 8199 flow [2024-06-28 03:29:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:29:05,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 03:29:05,192 INFO L175 Difference]: Start difference. First operand has 410 places, 522 transitions, 6351 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:29:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 547 transitions, 8199 flow [2024-06-28 03:29:11,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 547 transitions, 7959 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:11,394 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 6443 flow [2024-06-28 03:29:11,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6135, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6443, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2024-06-28 03:29:11,395 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-28 03:29:11,395 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 6443 flow [2024-06-28 03:29:11,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:11,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:11,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:29:11,396 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)] === [2024-06-28 03:29:11,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash -750564993, now seen corresponding path program 4 times [2024-06-28 03:29:11,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:11,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553607073] [2024-06-28 03:29:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553607073] [2024-06-28 03:29:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553607073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271166106] [2024-06-28 03:29:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:12,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:12,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:29:12,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 6443 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:12,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:12,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:29:12,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:14,385 INFO L124 PetriNetUnfolderBase]: 4211/6686 cut-off events. [2024-06-28 03:29:14,385 INFO L125 PetriNetUnfolderBase]: For 1771175/1771175 co-relation queries the response was YES. [2024-06-28 03:29:14,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72259 conditions, 6686 events. 4211/6686 cut-off events. For 1771175/1771175 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 41321 event pairs, 991 based on Foata normal form. 4/6688 useless extension candidates. Maximal degree in co-relation 72064. Up to 6477 conditions per place. [2024-06-28 03:29:14,492 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 514 selfloop transitions, 23 changer transitions 0/541 dead transitions. [2024-06-28 03:29:14,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 541 transitions, 7563 flow [2024-06-28 03:29:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 03:29:14,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 03:29:14,493 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 6443 flow. Second operand 9 states and 142 transitions. [2024-06-28 03:29:14,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 541 transitions, 7563 flow [2024-06-28 03:29:19,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 541 transitions, 7314 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:19,052 INFO L231 Difference]: Finished difference. Result has 416 places, 528 transitions, 6247 flow [2024-06-28 03:29:19,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6247, PETRI_PLACES=416, PETRI_TRANSITIONS=528} [2024-06-28 03:29:19,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-28 03:29:19,052 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 528 transitions, 6247 flow [2024-06-28 03:29:19,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:19,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:19,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:19,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:29:19,053 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)] === [2024-06-28 03:29:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -750982563, now seen corresponding path program 5 times [2024-06-28 03:29:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613567999] [2024-06-28 03:29:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:20,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:20,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613567999] [2024-06-28 03:29:20,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613567999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:20,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:20,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:20,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559985991] [2024-06-28 03:29:20,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:20,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:20,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:20,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:29:20,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 528 transitions, 6247 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:20,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:20,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:29:20,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:22,010 INFO L124 PetriNetUnfolderBase]: 4199/6675 cut-off events. [2024-06-28 03:29:22,010 INFO L125 PetriNetUnfolderBase]: For 1758189/1758189 co-relation queries the response was YES. [2024-06-28 03:29:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71313 conditions, 6675 events. 4199/6675 cut-off events. For 1758189/1758189 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 41301 event pairs, 855 based on Foata normal form. 4/6676 useless extension candidates. Maximal degree in co-relation 71117. Up to 6263 conditions per place. [2024-06-28 03:29:22,120 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 464 selfloop transitions, 78 changer transitions 0/546 dead transitions. [2024-06-28 03:29:22,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 546 transitions, 7427 flow [2024-06-28 03:29:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:29:22,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:29:22,121 INFO L175 Difference]: Start difference. First operand has 416 places, 528 transitions, 6247 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:29:22,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 546 transitions, 7427 flow [2024-06-28 03:29:27,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 546 transitions, 7179 flow, removed 24 selfloop flow, removed 13 redundant places. [2024-06-28 03:29:27,522 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 6161 flow [2024-06-28 03:29:27,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6161, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2024-06-28 03:29:27,523 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-28 03:29:27,523 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 6161 flow [2024-06-28 03:29:27,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:27,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:27,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:29:27,524 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)] === [2024-06-28 03:29:27,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -86150501, now seen corresponding path program 13 times [2024-06-28 03:29:27,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:27,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278694110] [2024-06-28 03:29:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:27,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:28,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278694110] [2024-06-28 03:29:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278694110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:28,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722353006] [2024-06-28 03:29:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:28,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:29:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 6161 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) [2024-06-28 03:29:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:29:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:30,007 INFO L124 PetriNetUnfolderBase]: 4238/6733 cut-off events. [2024-06-28 03:29:30,008 INFO L125 PetriNetUnfolderBase]: For 1739502/1739502 co-relation queries the response was YES. [2024-06-28 03:29:30,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70939 conditions, 6733 events. 4238/6733 cut-off events. For 1739502/1739502 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 41737 event pairs, 852 based on Foata normal form. 2/6733 useless extension candidates. Maximal degree in co-relation 70745. Up to 6392 conditions per place. [2024-06-28 03:29:30,117 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 485 selfloop transitions, 80 changer transitions 0/569 dead transitions. [2024-06-28 03:29:30,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 569 transitions, 7565 flow [2024-06-28 03:29:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:29:30,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 03:29:30,118 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 6161 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:29:30,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 569 transitions, 7565 flow [2024-06-28 03:29:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 569 transitions, 7316 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:29:35,084 INFO L231 Difference]: Finished difference. Result has 414 places, 544 transitions, 6318 flow [2024-06-28 03:29:35,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6318, PETRI_PLACES=414, PETRI_TRANSITIONS=544} [2024-06-28 03:29:35,084 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 371 predicate places. [2024-06-28 03:29:35,085 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 544 transitions, 6318 flow [2024-06-28 03:29:35,085 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) [2024-06-28 03:29:35,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:35,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:35,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:29:35,085 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:35,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash 933723295, now seen corresponding path program 1 times [2024-06-28 03:29:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:35,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430887417] [2024-06-28 03:29:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:35,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430887417] [2024-06-28 03:29:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430887417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:35,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760093127] [2024-06-28 03:29:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:36,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:29:36,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 544 transitions, 6318 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:36,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:36,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:29:36,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:37,823 INFO L124 PetriNetUnfolderBase]: 3992/6475 cut-off events. [2024-06-28 03:29:37,823 INFO L125 PetriNetUnfolderBase]: For 1550385/1550385 co-relation queries the response was YES. [2024-06-28 03:29:37,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66439 conditions, 6475 events. 3992/6475 cut-off events. For 1550385/1550385 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 41438 event pairs, 871 based on Foata normal form. 2/6464 useless extension candidates. Maximal degree in co-relation 66242. Up to 5980 conditions per place. [2024-06-28 03:29:37,926 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 499 selfloop transitions, 29 changer transitions 0/575 dead transitions. [2024-06-28 03:29:37,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 575 transitions, 7848 flow [2024-06-28 03:29:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:29:37,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:29:37,928 INFO L175 Difference]: Start difference. First operand has 414 places, 544 transitions, 6318 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:29:37,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 575 transitions, 7848 flow [2024-06-28 03:29:42,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 575 transitions, 7606 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:42,668 INFO L231 Difference]: Finished difference. Result has 417 places, 548 transitions, 6275 flow [2024-06-28 03:29:42,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6275, PETRI_PLACES=417, PETRI_TRANSITIONS=548} [2024-06-28 03:29:42,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-28 03:29:42,669 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 548 transitions, 6275 flow [2024-06-28 03:29:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:42,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:42,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:42,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:29:42,669 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:42,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 933783745, now seen corresponding path program 2 times [2024-06-28 03:29:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939637268] [2024-06-28 03:29:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939637268] [2024-06-28 03:29:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939637268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568025236] [2024-06-28 03:29:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:43,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:29:43,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 548 transitions, 6275 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:43,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:43,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:29:43,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:45,348 INFO L124 PetriNetUnfolderBase]: 4000/6487 cut-off events. [2024-06-28 03:29:45,348 INFO L125 PetriNetUnfolderBase]: For 1573590/1573590 co-relation queries the response was YES. [2024-06-28 03:29:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66715 conditions, 6487 events. 4000/6487 cut-off events. For 1573590/1573590 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 41528 event pairs, 906 based on Foata normal form. 2/6476 useless extension candidates. Maximal degree in co-relation 66517. Up to 6023 conditions per place. [2024-06-28 03:29:45,459 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 499 selfloop transitions, 26 changer transitions 0/572 dead transitions. [2024-06-28 03:29:45,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 572 transitions, 7457 flow [2024-06-28 03:29:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 03:29:45,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:29:45,460 INFO L175 Difference]: Start difference. First operand has 417 places, 548 transitions, 6275 flow. Second operand 10 states and 180 transitions. [2024-06-28 03:29:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 572 transitions, 7457 flow [2024-06-28 03:29:52,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 572 transitions, 7310 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:52,179 INFO L231 Difference]: Finished difference. Result has 421 places, 550 transitions, 6259 flow [2024-06-28 03:29:52,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6156, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6259, PETRI_PLACES=421, PETRI_TRANSITIONS=550} [2024-06-28 03:29:52,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-28 03:29:52,180 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 550 transitions, 6259 flow [2024-06-28 03:29:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:52,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:52,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:29:52,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:29:52,181 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:52,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 933783869, now seen corresponding path program 1 times [2024-06-28 03:29:52,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:52,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808632737] [2024-06-28 03:29:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:52,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:53,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808632737] [2024-06-28 03:29:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808632737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:53,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029971894] [2024-06-28 03:29:53,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:53,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:29:53,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 550 transitions, 6259 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:53,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:53,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:29:53,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:55,010 INFO L124 PetriNetUnfolderBase]: 4107/6599 cut-off events. [2024-06-28 03:29:55,010 INFO L125 PetriNetUnfolderBase]: For 1592471/1592471 co-relation queries the response was YES. [2024-06-28 03:29:55,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67643 conditions, 6599 events. 4107/6599 cut-off events. For 1592471/1592471 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 41674 event pairs, 931 based on Foata normal form. 1/6587 useless extension candidates. Maximal degree in co-relation 67443. Up to 6293 conditions per place. [2024-06-28 03:29:55,131 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 537 selfloop transitions, 31 changer transitions 0/578 dead transitions. [2024-06-28 03:29:55,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 578 transitions, 7895 flow [2024-06-28 03:29:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:29:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:29:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 03:29:55,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 03:29:55,133 INFO L175 Difference]: Start difference. First operand has 421 places, 550 transitions, 6259 flow. Second operand 10 states and 174 transitions. [2024-06-28 03:29:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 578 transitions, 7895 flow [2024-06-28 03:30:02,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 578 transitions, 7812 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:02,267 INFO L231 Difference]: Finished difference. Result has 423 places, 556 transitions, 6418 flow [2024-06-28 03:30:02,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6176, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6418, PETRI_PLACES=423, PETRI_TRANSITIONS=556} [2024-06-28 03:30:02,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 03:30:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 556 transitions, 6418 flow [2024-06-28 03:30:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:02,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:30:02,268 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:02,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 675292315, now seen corresponding path program 2 times [2024-06-28 03:30:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256632779] [2024-06-28 03:30:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256632779] [2024-06-28 03:30:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256632779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:03,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394191815] [2024-06-28 03:30:03,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:03,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:03,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:30:03,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 556 transitions, 6418 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:03,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:03,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:30:03,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:05,094 INFO L124 PetriNetUnfolderBase]: 4112/6606 cut-off events. [2024-06-28 03:30:05,095 INFO L125 PetriNetUnfolderBase]: For 1619273/1619273 co-relation queries the response was YES. [2024-06-28 03:30:05,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68321 conditions, 6606 events. 4112/6606 cut-off events. For 1619273/1619273 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41705 event pairs, 931 based on Foata normal form. 1/6594 useless extension candidates. Maximal degree in co-relation 68120. Up to 6321 conditions per place. [2024-06-28 03:30:05,211 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 545 selfloop transitions, 21 changer transitions 0/576 dead transitions. [2024-06-28 03:30:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 576 transitions, 7688 flow [2024-06-28 03:30:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:30:05,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:30:05,212 INFO L175 Difference]: Start difference. First operand has 423 places, 556 transitions, 6418 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:30:05,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 576 transitions, 7688 flow [2024-06-28 03:30:12,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 576 transitions, 7533 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:12,521 INFO L231 Difference]: Finished difference. Result has 426 places, 559 transitions, 6407 flow [2024-06-28 03:30:12,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6289, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6407, PETRI_PLACES=426, PETRI_TRANSITIONS=559} [2024-06-28 03:30:12,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 383 predicate places. [2024-06-28 03:30:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 559 transitions, 6407 flow [2024-06-28 03:30:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:12,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:12,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:12,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:30:12,522 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 675287665, now seen corresponding path program 3 times [2024-06-28 03:30:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347139359] [2024-06-28 03:30:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:13,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347139359] [2024-06-28 03:30:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347139359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:13,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524794200] [2024-06-28 03:30:13,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:13,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:30:13,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 559 transitions, 6407 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:13,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:13,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:30:13,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:15,349 INFO L124 PetriNetUnfolderBase]: 4109/6602 cut-off events. [2024-06-28 03:30:15,349 INFO L125 PetriNetUnfolderBase]: For 1631230/1631230 co-relation queries the response was YES. [2024-06-28 03:30:15,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68220 conditions, 6602 events. 4109/6602 cut-off events. For 1631230/1631230 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41694 event pairs, 931 based on Foata normal form. 1/6590 useless extension candidates. Maximal degree in co-relation 68017. Up to 6311 conditions per place. [2024-06-28 03:30:15,464 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 540 selfloop transitions, 26 changer transitions 0/576 dead transitions. [2024-06-28 03:30:15,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 576 transitions, 7587 flow [2024-06-28 03:30:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:30:15,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:30:15,465 INFO L175 Difference]: Start difference. First operand has 426 places, 559 transitions, 6407 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:30:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 576 transitions, 7587 flow [2024-06-28 03:30:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 576 transitions, 7457 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:23,720 INFO L231 Difference]: Finished difference. Result has 428 places, 559 transitions, 6335 flow [2024-06-28 03:30:23,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6277, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6335, PETRI_PLACES=428, PETRI_TRANSITIONS=559} [2024-06-28 03:30:23,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-28 03:30:23,726 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 559 transitions, 6335 flow [2024-06-28 03:30:23,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:23,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:23,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:30:23,727 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -387455551, now seen corresponding path program 3 times [2024-06-28 03:30:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937912770] [2024-06-28 03:30:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:24,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937912770] [2024-06-28 03:30:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937912770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:24,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:24,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:24,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426354369] [2024-06-28 03:30:24,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:24,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:24,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:24,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:30:24,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 559 transitions, 6335 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:24,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:24,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:30:24,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:26,807 INFO L124 PetriNetUnfolderBase]: 4020/6511 cut-off events. [2024-06-28 03:30:26,807 INFO L125 PetriNetUnfolderBase]: For 1646945/1646945 co-relation queries the response was YES. [2024-06-28 03:30:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67519 conditions, 6511 events. 4020/6511 cut-off events. For 1646945/1646945 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41570 event pairs, 908 based on Foata normal form. 2/6500 useless extension candidates. Maximal degree in co-relation 67315. Up to 6053 conditions per place. [2024-06-28 03:30:26,934 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 507 selfloop transitions, 20 changer transitions 0/577 dead transitions. [2024-06-28 03:30:26,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 577 transitions, 7439 flow [2024-06-28 03:30:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:30:26,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 03:30:26,935 INFO L175 Difference]: Start difference. First operand has 428 places, 559 transitions, 6335 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:30:26,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 577 transitions, 7439 flow [2024-06-28 03:30:35,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 577 transitions, 7327 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:35,282 INFO L231 Difference]: Finished difference. Result has 429 places, 559 transitions, 6268 flow [2024-06-28 03:30:35,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6223, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6268, PETRI_PLACES=429, PETRI_TRANSITIONS=559} [2024-06-28 03:30:35,283 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-28 03:30:35,283 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 559 transitions, 6268 flow [2024-06-28 03:30:35,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:35,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:35,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:30:35,284 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:35,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash 936585215, now seen corresponding path program 1 times [2024-06-28 03:30:35,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:35,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652524012] [2024-06-28 03:30:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:36,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:36,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652524012] [2024-06-28 03:30:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652524012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:36,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880532096] [2024-06-28 03:30:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:36,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:36,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:30:36,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 559 transitions, 6268 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:36,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:36,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:30:36,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:38,133 INFO L124 PetriNetUnfolderBase]: 4141/6651 cut-off events. [2024-06-28 03:30:38,133 INFO L125 PetriNetUnfolderBase]: For 1676578/1676578 co-relation queries the response was YES. [2024-06-28 03:30:38,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 6651 events. 4141/6651 cut-off events. For 1676578/1676578 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 42062 event pairs, 937 based on Foata normal form. 2/6640 useless extension candidates. Maximal degree in co-relation 68597. Up to 6362 conditions per place. [2024-06-28 03:30:38,235 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 549 selfloop transitions, 21 changer transitions 0/580 dead transitions. [2024-06-28 03:30:38,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 580 transitions, 7542 flow [2024-06-28 03:30:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:30:38,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 03:30:38,236 INFO L175 Difference]: Start difference. First operand has 429 places, 559 transitions, 6268 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:30:38,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 580 transitions, 7542 flow [2024-06-28 03:30:47,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 580 transitions, 7490 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:30:47,329 INFO L231 Difference]: Finished difference. Result has 430 places, 562 transitions, 6352 flow [2024-06-28 03:30:47,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6216, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6352, PETRI_PLACES=430, PETRI_TRANSITIONS=562} [2024-06-28 03:30:47,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-28 03:30:47,329 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 562 transitions, 6352 flow [2024-06-28 03:30:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:47,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:47,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:30:47,330 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:47,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:47,330 INFO L85 PathProgramCache]: Analyzing trace with hash 790763161, now seen corresponding path program 2 times [2024-06-28 03:30:47,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:47,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705374039] [2024-06-28 03:30:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705374039] [2024-06-28 03:30:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705374039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76133957] [2024-06-28 03:30:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:48,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:48,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:30:48,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 562 transitions, 6352 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:48,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:48,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:30:48,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:49,990 INFO L124 PetriNetUnfolderBase]: 4172/6700 cut-off events. [2024-06-28 03:30:49,990 INFO L125 PetriNetUnfolderBase]: For 1729781/1729781 co-relation queries the response was YES. [2024-06-28 03:30:50,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70236 conditions, 6700 events. 4172/6700 cut-off events. For 1729781/1729781 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 42343 event pairs, 940 based on Foata normal form. 2/6689 useless extension candidates. Maximal degree in co-relation 70030. Up to 6286 conditions per place. [2024-06-28 03:30:50,111 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 510 selfloop transitions, 70 changer transitions 0/590 dead transitions. [2024-06-28 03:30:50,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 590 transitions, 8390 flow [2024-06-28 03:30:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:30:50,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:30:50,113 INFO L175 Difference]: Start difference. First operand has 430 places, 562 transitions, 6352 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:30:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 590 transitions, 8390 flow [2024-06-28 03:30:58,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 590 transitions, 8276 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:30:58,291 INFO L231 Difference]: Finished difference. Result has 432 places, 571 transitions, 6654 flow [2024-06-28 03:30:58,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6654, PETRI_PLACES=432, PETRI_TRANSITIONS=571} [2024-06-28 03:30:58,292 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-28 03:30:58,292 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 571 transitions, 6654 flow [2024-06-28 03:30:58,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:58,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:58,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:30:58,293 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:58,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1052049179, now seen corresponding path program 4 times [2024-06-28 03:30:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:58,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340889557] [2024-06-28 03:30:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340889557] [2024-06-28 03:30:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340889557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:59,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:59,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:30:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035069154] [2024-06-28 03:30:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:59,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:30:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:30:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:30:59,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:30:59,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 571 transitions, 6654 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:59,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:30:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:01,272 INFO L124 PetriNetUnfolderBase]: 4177/6707 cut-off events. [2024-06-28 03:31:01,272 INFO L125 PetriNetUnfolderBase]: For 1744842/1744842 co-relation queries the response was YES. [2024-06-28 03:31:01,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70741 conditions, 6707 events. 4177/6707 cut-off events. For 1744842/1744842 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 42434 event pairs, 941 based on Foata normal form. 1/6695 useless extension candidates. Maximal degree in co-relation 70534. Up to 6374 conditions per place. [2024-06-28 03:31:01,388 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 524 selfloop transitions, 54 changer transitions 0/588 dead transitions. [2024-06-28 03:31:01,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 588 transitions, 7942 flow [2024-06-28 03:31:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:31:01,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:31:01,389 INFO L175 Difference]: Start difference. First operand has 432 places, 571 transitions, 6654 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:31:01,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 588 transitions, 7942 flow [2024-06-28 03:31:09,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 588 transitions, 7797 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:09,376 INFO L231 Difference]: Finished difference. Result has 437 places, 574 transitions, 6723 flow [2024-06-28 03:31:09,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6509, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6723, PETRI_PLACES=437, PETRI_TRANSITIONS=574} [2024-06-28 03:31:09,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 03:31:09,377 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 574 transitions, 6723 flow [2024-06-28 03:31:09,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:09,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:09,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:31:09,377 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:09,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash 790756651, now seen corresponding path program 3 times [2024-06-28 03:31:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756075459] [2024-06-28 03:31:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756075459] [2024-06-28 03:31:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756075459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338393232] [2024-06-28 03:31:10,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:10,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:31:10,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 574 transitions, 6723 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:10,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:10,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:31:10,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:12,093 INFO L124 PetriNetUnfolderBase]: 4187/6723 cut-off events. [2024-06-28 03:31:12,093 INFO L125 PetriNetUnfolderBase]: For 1778677/1778677 co-relation queries the response was YES. [2024-06-28 03:31:12,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71429 conditions, 6723 events. 4187/6723 cut-off events. For 1778677/1778677 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 42566 event pairs, 940 based on Foata normal form. 2/6712 useless extension candidates. Maximal degree in co-relation 71220. Up to 6303 conditions per place. [2024-06-28 03:31:12,220 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 516 selfloop transitions, 71 changer transitions 0/597 dead transitions. [2024-06-28 03:31:12,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 597 transitions, 8595 flow [2024-06-28 03:31:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:31:12,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:31:12,221 INFO L175 Difference]: Start difference. First operand has 437 places, 574 transitions, 6723 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:31:12,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 597 transitions, 8595 flow [2024-06-28 03:31:21,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 597 transitions, 8403 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:21,773 INFO L231 Difference]: Finished difference. Result has 439 places, 577 transitions, 6751 flow [2024-06-28 03:31:21,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6531, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6751, PETRI_PLACES=439, PETRI_TRANSITIONS=577} [2024-06-28 03:31:21,773 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 03:31:21,773 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 577 transitions, 6751 flow [2024-06-28 03:31:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:21,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:31:21,774 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:21,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:21,774 INFO L85 PathProgramCache]: Analyzing trace with hash 790578835, now seen corresponding path program 5 times [2024-06-28 03:31:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:21,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854325266] [2024-06-28 03:31:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:22,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854325266] [2024-06-28 03:31:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854325266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:22,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:22,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400199901] [2024-06-28 03:31:22,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:22,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:31:22,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 577 transitions, 6751 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:22,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:22,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:31:22,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:24,706 INFO L124 PetriNetUnfolderBase]: 4176/6701 cut-off events. [2024-06-28 03:31:24,707 INFO L125 PetriNetUnfolderBase]: For 1789669/1789669 co-relation queries the response was YES. [2024-06-28 03:31:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71397 conditions, 6701 events. 4176/6701 cut-off events. For 1789669/1789669 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 42386 event pairs, 935 based on Foata normal form. 1/6689 useless extension candidates. Maximal degree in co-relation 71187. Up to 6358 conditions per place. [2024-06-28 03:31:24,837 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 527 selfloop transitions, 61 changer transitions 0/598 dead transitions. [2024-06-28 03:31:24,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 598 transitions, 8453 flow [2024-06-28 03:31:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:31:24,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-28 03:31:24,838 INFO L175 Difference]: Start difference. First operand has 439 places, 577 transitions, 6751 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:31:24,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 598 transitions, 8453 flow [2024-06-28 03:31:32,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 598 transitions, 8273 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:31:32,571 INFO L231 Difference]: Finished difference. Result has 442 places, 583 transitions, 6905 flow [2024-06-28 03:31:32,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6571, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6905, PETRI_PLACES=442, PETRI_TRANSITIONS=583} [2024-06-28 03:31:32,575 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-28 03:31:32,575 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 583 transitions, 6905 flow [2024-06-28 03:31:32,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:32,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:32,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:31:32,576 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:32,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1051871425, now seen corresponding path program 4 times [2024-06-28 03:31:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041142027] [2024-06-28 03:31:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041142027] [2024-06-28 03:31:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041142027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788119051] [2024-06-28 03:31:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:33,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:33,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:31:33,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 583 transitions, 6905 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:33,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:33,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:31:33,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:35,684 INFO L124 PetriNetUnfolderBase]: 4097/6626 cut-off events. [2024-06-28 03:31:35,684 INFO L125 PetriNetUnfolderBase]: For 1833947/1833947 co-relation queries the response was YES. [2024-06-28 03:31:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71576 conditions, 6626 events. 4097/6626 cut-off events. For 1833947/1833947 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 42368 event pairs, 912 based on Foata normal form. 2/6615 useless extension candidates. Maximal degree in co-relation 71365. Up to 6140 conditions per place. [2024-06-28 03:31:35,796 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 515 selfloop transitions, 32 changer transitions 0/600 dead transitions. [2024-06-28 03:31:35,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 600 transitions, 8119 flow [2024-06-28 03:31:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:31:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:31:35,798 INFO L175 Difference]: Start difference. First operand has 442 places, 583 transitions, 6905 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:31:35,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 600 transitions, 8119 flow [2024-06-28 03:31:46,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 600 transitions, 7926 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:46,025 INFO L231 Difference]: Finished difference. Result has 446 places, 585 transitions, 6865 flow [2024-06-28 03:31:46,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6712, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6865, PETRI_PLACES=446, PETRI_TRANSITIONS=585} [2024-06-28 03:31:46,026 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-28 03:31:46,026 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 585 transitions, 6865 flow [2024-06-28 03:31:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:46,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:46,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:46,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:31:46,027 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:46,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash 790583485, now seen corresponding path program 6 times [2024-06-28 03:31:46,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682256774] [2024-06-28 03:31:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:46,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682256774] [2024-06-28 03:31:46,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682256774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:46,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:46,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:31:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818982108] [2024-06-28 03:31:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:46,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:31:46,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:31:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:31:47,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:31:47,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 585 transitions, 6865 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:47,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:47,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:31:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:48,816 INFO L124 PetriNetUnfolderBase]: 4205/6749 cut-off events. [2024-06-28 03:31:48,816 INFO L125 PetriNetUnfolderBase]: For 1843239/1843239 co-relation queries the response was YES. [2024-06-28 03:31:48,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72687 conditions, 6749 events. 4205/6749 cut-off events. For 1843239/1843239 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 42701 event pairs, 941 based on Foata normal form. 1/6737 useless extension candidates. Maximal degree in co-relation 72474. Up to 6414 conditions per place. [2024-06-28 03:31:48,952 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 536 selfloop transitions, 53 changer transitions 0/599 dead transitions. [2024-06-28 03:31:48,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 599 transitions, 8081 flow [2024-06-28 03:31:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:31:48,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 03:31:48,954 INFO L175 Difference]: Start difference. First operand has 446 places, 585 transitions, 6865 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:31:48,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 599 transitions, 8081 flow [2024-06-28 03:31:55,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 599 transitions, 7902 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:55,495 INFO L231 Difference]: Finished difference. Result has 448 places, 585 transitions, 6798 flow [2024-06-28 03:31:55,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6686, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6798, PETRI_PLACES=448, PETRI_TRANSITIONS=585} [2024-06-28 03:31:55,496 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 405 predicate places. [2024-06-28 03:31:55,496 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 585 transitions, 6798 flow [2024-06-28 03:31:55,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:55,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:55,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:55,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:31:55,496 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:31:55,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1051876385, now seen corresponding path program 4 times [2024-06-28 03:31:55,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719681168] [2024-06-28 03:31:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:56,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:56,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719681168] [2024-06-28 03:31:56,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719681168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:56,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:56,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:31:56,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419238744] [2024-06-28 03:31:56,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:56,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:31:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:56,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:31:56,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:31:56,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:31:56,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 585 transitions, 6798 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:56,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:56,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:31:56,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:58,271 INFO L124 PetriNetUnfolderBase]: 4175/6701 cut-off events. [2024-06-28 03:31:58,271 INFO L125 PetriNetUnfolderBase]: For 1840533/1840533 co-relation queries the response was YES. [2024-06-28 03:31:58,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71710 conditions, 6701 events. 4175/6701 cut-off events. For 1840533/1840533 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 42367 event pairs, 933 based on Foata normal form. 2/6690 useless extension candidates. Maximal degree in co-relation 71496. Up to 6288 conditions per place. [2024-06-28 03:31:58,397 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 524 selfloop transitions, 70 changer transitions 0/604 dead transitions. [2024-06-28 03:31:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 604 transitions, 8334 flow [2024-06-28 03:31:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:31:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:31:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:31:58,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:31:58,399 INFO L175 Difference]: Start difference. First operand has 448 places, 585 transitions, 6798 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:31:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 604 transitions, 8334 flow [2024-06-28 03:32:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 604 transitions, 8160 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 03:32:04,822 INFO L231 Difference]: Finished difference. Result has 449 places, 585 transitions, 6770 flow [2024-06-28 03:32:04,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6624, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6770, PETRI_PLACES=449, PETRI_TRANSITIONS=585} [2024-06-28 03:32:04,823 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-28 03:32:04,823 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 585 transitions, 6770 flow [2024-06-28 03:32:04,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:04,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:04,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:04,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:32:04,824 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:04,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1102386597, now seen corresponding path program 7 times [2024-06-28 03:32:04,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:04,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480661727] [2024-06-28 03:32:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480661727] [2024-06-28 03:32:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480661727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:05,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091311734] [2024-06-28 03:32:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:05,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:32:05,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 585 transitions, 6770 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:05,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:32:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:07,691 INFO L124 PetriNetUnfolderBase]: 4180/6708 cut-off events. [2024-06-28 03:32:07,691 INFO L125 PetriNetUnfolderBase]: For 1852826/1852826 co-relation queries the response was YES. [2024-06-28 03:32:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71953 conditions, 6708 events. 4180/6708 cut-off events. For 1852826/1852826 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42407 event pairs, 932 based on Foata normal form. 1/6696 useless extension candidates. Maximal degree in co-relation 71738. Up to 6403 conditions per place. [2024-06-28 03:32:07,815 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 553 selfloop transitions, 40 changer transitions 0/603 dead transitions. [2024-06-28 03:32:07,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 603 transitions, 8496 flow [2024-06-28 03:32:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:32:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:32:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 03:32:07,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-28 03:32:07,816 INFO L175 Difference]: Start difference. First operand has 449 places, 585 transitions, 6770 flow. Second operand 10 states and 163 transitions. [2024-06-28 03:32:07,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 603 transitions, 8496 flow [2024-06-28 03:32:16,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 603 transitions, 8316 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:32:16,719 INFO L231 Difference]: Finished difference. Result has 450 places, 591 transitions, 6898 flow [2024-06-28 03:32:16,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6590, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6898, PETRI_PLACES=450, PETRI_TRANSITIONS=591} [2024-06-28 03:32:16,719 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-28 03:32:16,720 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 591 transitions, 6898 flow [2024-06-28 03:32:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:16,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:16,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:16,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:32:16,720 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:16,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -523429695, now seen corresponding path program 5 times [2024-06-28 03:32:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093261564] [2024-06-28 03:32:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:16,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:17,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093261564] [2024-06-28 03:32:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093261564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:17,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:32:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833780045] [2024-06-28 03:32:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:32:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:32:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:32:17,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:32:17,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 591 transitions, 6898 flow. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:17,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:17,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:32:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:19,631 INFO L124 PetriNetUnfolderBase]: 4088/6614 cut-off events. [2024-06-28 03:32:19,631 INFO L125 PetriNetUnfolderBase]: For 1875193/1875193 co-relation queries the response was YES. [2024-06-28 03:32:19,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71584 conditions, 6614 events. 4088/6614 cut-off events. For 1875193/1875193 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42281 event pairs, 909 based on Foata normal form. 2/6603 useless extension candidates. Maximal degree in co-relation 71368. Up to 6154 conditions per place. [2024-06-28 03:32:19,764 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 530 selfloop transitions, 20 changer transitions 0/605 dead transitions. [2024-06-28 03:32:19,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 605 transitions, 8114 flow [2024-06-28 03:32:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:32:19,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:32:19,766 INFO L175 Difference]: Start difference. First operand has 450 places, 591 transitions, 6898 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:32:19,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 605 transitions, 8114 flow [2024-06-28 03:32:27,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 605 transitions, 7925 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:27,027 INFO L231 Difference]: Finished difference. Result has 453 places, 593 transitions, 6844 flow [2024-06-28 03:32:27,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6709, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6844, PETRI_PLACES=453, PETRI_TRANSITIONS=593} [2024-06-28 03:32:27,027 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-28 03:32:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 593 transitions, 6844 flow [2024-06-28 03:32:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 11 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:32:27,028 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:27,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -523424921, now seen corresponding path program 8 times [2024-06-28 03:32:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466053207] [2024-06-28 03:32:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466053207] [2024-06-28 03:32:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466053207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935844616] [2024-06-28 03:32:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:28,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:32:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 593 transitions, 6844 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:28,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:32:28,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:30,138 INFO L124 PetriNetUnfolderBase]: 4204/6748 cut-off events. [2024-06-28 03:32:30,138 INFO L125 PetriNetUnfolderBase]: For 1895072/1895072 co-relation queries the response was YES. [2024-06-28 03:32:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72899 conditions, 6748 events. 4204/6748 cut-off events. For 1895072/1895072 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 42659 event pairs, 937 based on Foata normal form. 1/6736 useless extension candidates. Maximal degree in co-relation 72681. Up to 6452 conditions per place. [2024-06-28 03:32:30,252 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 563 selfloop transitions, 34 changer transitions 0/607 dead transitions. [2024-06-28 03:32:30,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 607 transitions, 8132 flow [2024-06-28 03:32:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:32:30,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 03:32:30,254 INFO L175 Difference]: Start difference. First operand has 453 places, 593 transitions, 6844 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:32:30,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 607 transitions, 8132 flow [2024-06-28 03:32:39,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 607 transitions, 8013 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:32:39,459 INFO L231 Difference]: Finished difference. Result has 455 places, 596 transitions, 6871 flow [2024-06-28 03:32:39,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6871, PETRI_PLACES=455, PETRI_TRANSITIONS=596} [2024-06-28 03:32:39,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-28 03:32:39,460 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 596 transitions, 6871 flow [2024-06-28 03:32:39,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:39,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:39,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:39,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:32:39,460 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:39,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash -736988729, now seen corresponding path program 5 times [2024-06-28 03:32:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:39,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103301998] [2024-06-28 03:32:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:39,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:40,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103301998] [2024-06-28 03:32:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103301998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:40,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:40,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:32:40,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998924137] [2024-06-28 03:32:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:32:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:32:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:32:40,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:32:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 596 transitions, 6871 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:32:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:42,412 INFO L124 PetriNetUnfolderBase]: 4193/6725 cut-off events. [2024-06-28 03:32:42,413 INFO L125 PetriNetUnfolderBase]: For 1926487/1926487 co-relation queries the response was YES. [2024-06-28 03:32:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72579 conditions, 6725 events. 4193/6725 cut-off events. For 1926487/1926487 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 42493 event pairs, 933 based on Foata normal form. 3/6715 useless extension candidates. Maximal degree in co-relation 72360. Up to 6434 conditions per place. [2024-06-28 03:32:42,751 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 579 selfloop transitions, 23 changer transitions 0/612 dead transitions. [2024-06-28 03:32:42,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 612 transitions, 8203 flow [2024-06-28 03:32:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 03:32:42,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-28 03:32:42,752 INFO L175 Difference]: Start difference. First operand has 455 places, 596 transitions, 6871 flow. Second operand 9 states and 149 transitions. [2024-06-28 03:32:42,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 612 transitions, 8203 flow [2024-06-28 03:32:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 612 transitions, 8085 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:32:50,931 INFO L231 Difference]: Finished difference. Result has 457 places, 599 transitions, 6903 flow [2024-06-28 03:32:50,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6753, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6903, PETRI_PLACES=457, PETRI_TRANSITIONS=599} [2024-06-28 03:32:50,931 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-28 03:32:50,931 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 599 transitions, 6903 flow [2024-06-28 03:32:50,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:50,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:50,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:50,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:32:50,932 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:32:50,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 962658405, now seen corresponding path program 6 times [2024-06-28 03:32:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708433245] [2024-06-28 03:32:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:50,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708433245] [2024-06-28 03:32:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708433245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:51,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:32:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018681488] [2024-06-28 03:32:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:32:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:32:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:32:51,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:32:51,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 599 transitions, 6903 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:51,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:51,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:32:51,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:54,186 INFO L124 PetriNetUnfolderBase]: 4219/6763 cut-off events. [2024-06-28 03:32:54,186 INFO L125 PetriNetUnfolderBase]: For 1965177/1965177 co-relation queries the response was YES. [2024-06-28 03:32:54,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73526 conditions, 6763 events. 4219/6763 cut-off events. For 1965177/1965177 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 42741 event pairs, 936 based on Foata normal form. 2/6752 useless extension candidates. Maximal degree in co-relation 73306. Up to 6441 conditions per place. [2024-06-28 03:32:54,299 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 575 selfloop transitions, 35 changer transitions 0/620 dead transitions. [2024-06-28 03:32:54,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 620 transitions, 8663 flow [2024-06-28 03:32:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:32:54,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:32:54,301 INFO L175 Difference]: Start difference. First operand has 457 places, 599 transitions, 6903 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:32:54,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 620 transitions, 8663 flow [2024-06-28 03:33:03,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 620 transitions, 8541 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:03,755 INFO L231 Difference]: Finished difference. Result has 459 places, 605 transitions, 7059 flow [2024-06-28 03:33:03,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7059, PETRI_PLACES=459, PETRI_TRANSITIONS=605} [2024-06-28 03:33:03,756 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-28 03:33:03,756 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 605 transitions, 7059 flow [2024-06-28 03:33:03,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:03,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:03,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:03,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:33:03,756 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:03,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:03,757 INFO L85 PathProgramCache]: Analyzing trace with hash -523424735, now seen corresponding path program 7 times [2024-06-28 03:33:03,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:03,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577466203] [2024-06-28 03:33:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:03,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577466203] [2024-06-28 03:33:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577466203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:33:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503066635] [2024-06-28 03:33:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:04,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:33:04,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:33:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:33:04,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:33:04,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 605 transitions, 7059 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:04,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:04,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:33:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:06,959 INFO L124 PetriNetUnfolderBase]: 4229/6779 cut-off events. [2024-06-28 03:33:06,959 INFO L125 PetriNetUnfolderBase]: For 1988791/1988791 co-relation queries the response was YES. [2024-06-28 03:33:07,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73740 conditions, 6779 events. 4229/6779 cut-off events. For 1988791/1988791 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 42835 event pairs, 931 based on Foata normal form. 2/6768 useless extension candidates. Maximal degree in co-relation 73519. Up to 6415 conditions per place. [2024-06-28 03:33:07,074 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 558 selfloop transitions, 55 changer transitions 0/623 dead transitions. [2024-06-28 03:33:07,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 623 transitions, 8735 flow [2024-06-28 03:33:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:33:07,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 03:33:07,075 INFO L175 Difference]: Start difference. First operand has 459 places, 605 transitions, 7059 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:33:07,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 623 transitions, 8735 flow [2024-06-28 03:33:16,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 623 transitions, 8597 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 03:33:16,642 INFO L231 Difference]: Finished difference. Result has 463 places, 608 transitions, 7141 flow [2024-06-28 03:33:16,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6921, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7141, PETRI_PLACES=463, PETRI_TRANSITIONS=608} [2024-06-28 03:33:16,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-28 03:33:16,643 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 608 transitions, 7141 flow [2024-06-28 03:33:16,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:16,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:16,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:16,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:33:16,644 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:16,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash -523245245, now seen corresponding path program 8 times [2024-06-28 03:33:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846176067] [2024-06-28 03:33:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:16,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846176067] [2024-06-28 03:33:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846176067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:17,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:33:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792699807] [2024-06-28 03:33:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:17,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:33:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:33:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:33:17,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:33:17,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 608 transitions, 7141 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:17,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:17,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:33:17,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:19,706 INFO L124 PetriNetUnfolderBase]: 4239/6795 cut-off events. [2024-06-28 03:33:19,707 INFO L125 PetriNetUnfolderBase]: For 2012758/2012758 co-relation queries the response was YES. [2024-06-28 03:33:19,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74066 conditions, 6795 events. 4239/6795 cut-off events. For 2012758/2012758 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 43041 event pairs, 936 based on Foata normal form. 2/6784 useless extension candidates. Maximal degree in co-relation 73843. Up to 6425 conditions per place. [2024-06-28 03:33:19,822 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 561 selfloop transitions, 56 changer transitions 0/627 dead transitions. [2024-06-28 03:33:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 627 transitions, 9141 flow [2024-06-28 03:33:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:33:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:33:19,823 INFO L175 Difference]: Start difference. First operand has 463 places, 608 transitions, 7141 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:33:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 627 transitions, 9141 flow [2024-06-28 03:33:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 627 transitions, 8888 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:31,193 INFO L231 Difference]: Finished difference. Result has 465 places, 611 transitions, 7116 flow [2024-06-28 03:33:31,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6908, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7116, PETRI_PLACES=465, PETRI_TRANSITIONS=611} [2024-06-28 03:33:31,193 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 422 predicate places. [2024-06-28 03:33:31,193 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 611 transitions, 7116 flow [2024-06-28 03:33:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:31,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:31,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:31,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:33:31,194 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:31,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:31,194 INFO L85 PathProgramCache]: Analyzing trace with hash -516995831, now seen corresponding path program 9 times [2024-06-28 03:33:31,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:31,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017260758] [2024-06-28 03:33:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:31,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017260758] [2024-06-28 03:33:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017260758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:32,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:32,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:33:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871508766] [2024-06-28 03:33:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:33:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:33:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:33:32,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:33:32,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 611 transitions, 7116 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:32,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:32,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:33:32,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:34,489 INFO L124 PetriNetUnfolderBase]: 4244/6802 cut-off events. [2024-06-28 03:33:34,489 INFO L125 PetriNetUnfolderBase]: For 2022022/2022022 co-relation queries the response was YES. [2024-06-28 03:33:34,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74065 conditions, 6802 events. 4244/6802 cut-off events. For 2022022/2022022 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 43072 event pairs, 938 based on Foata normal form. 1/6790 useless extension candidates. Maximal degree in co-relation 73841. Up to 6519 conditions per place. [2024-06-28 03:33:34,610 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 594 selfloop transitions, 21 changer transitions 0/625 dead transitions. [2024-06-28 03:33:34,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 625 transitions, 8446 flow [2024-06-28 03:33:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:33:34,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:33:34,611 INFO L175 Difference]: Start difference. First operand has 465 places, 611 transitions, 7116 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:33:34,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 625 transitions, 8446 flow [2024-06-28 03:33:46,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 625 transitions, 8230 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:46,529 INFO L231 Difference]: Finished difference. Result has 467 places, 614 transitions, 7026 flow [2024-06-28 03:33:46,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6900, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7026, PETRI_PLACES=467, PETRI_TRANSITIONS=614} [2024-06-28 03:33:46,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-28 03:33:46,530 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 614 transitions, 7026 flow [2024-06-28 03:33:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:46,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:46,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:33:46,531 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:46,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash -295350605, now seen corresponding path program 9 times [2024-06-28 03:33:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:46,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349463956] [2024-06-28 03:33:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349463956] [2024-06-28 03:33:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349463956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:33:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086484294] [2024-06-28 03:33:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:47,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:33:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:33:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:33:47,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:33:47,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 614 transitions, 7026 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:47,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:47,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:33:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:49,707 INFO L124 PetriNetUnfolderBase]: 4238/6794 cut-off events. [2024-06-28 03:33:49,708 INFO L125 PetriNetUnfolderBase]: For 2032214/2032214 co-relation queries the response was YES. [2024-06-28 03:33:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73461 conditions, 6794 events. 4238/6794 cut-off events. For 2032214/2032214 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 43018 event pairs, 933 based on Foata normal form. 2/6783 useless extension candidates. Maximal degree in co-relation 73237. Up to 6471 conditions per place. [2024-06-28 03:33:49,827 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 582 selfloop transitions, 36 changer transitions 0/628 dead transitions. [2024-06-28 03:33:49,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 628 transitions, 8302 flow [2024-06-28 03:33:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:33:49,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:33:49,828 INFO L175 Difference]: Start difference. First operand has 467 places, 614 transitions, 7026 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:33:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 628 transitions, 8302 flow [2024-06-28 03:33:58,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 628 transitions, 8142 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:58,894 INFO L231 Difference]: Finished difference. Result has 469 places, 614 transitions, 6944 flow [2024-06-28 03:33:58,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6866, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6944, PETRI_PLACES=469, PETRI_TRANSITIONS=614} [2024-06-28 03:33:58,895 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 426 predicate places. [2024-06-28 03:33:58,895 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 614 transitions, 6944 flow [2024-06-28 03:33:58,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:58,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:58,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:58,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:33:58,896 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:33:58,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash -523251755, now seen corresponding path program 10 times [2024-06-28 03:33:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:58,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50206578] [2024-06-28 03:33:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50206578] [2024-06-28 03:33:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50206578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:33:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283002459] [2024-06-28 03:33:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:33:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:33:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:33:59,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:33:59,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 614 transitions, 6944 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:59,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:59,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:33:59,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:01,907 INFO L124 PetriNetUnfolderBase]: 4232/6786 cut-off events. [2024-06-28 03:34:01,907 INFO L125 PetriNetUnfolderBase]: For 2030694/2030694 co-relation queries the response was YES. [2024-06-28 03:34:01,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73116 conditions, 6786 events. 4232/6786 cut-off events. For 2030694/2030694 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 42958 event pairs, 934 based on Foata normal form. 2/6775 useless extension candidates. Maximal degree in co-relation 72891. Up to 6422 conditions per place. [2024-06-28 03:34:02,022 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 564 selfloop transitions, 55 changer transitions 0/629 dead transitions. [2024-06-28 03:34:02,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 629 transitions, 8226 flow [2024-06-28 03:34:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:34:02,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:34:02,024 INFO L175 Difference]: Start difference. First operand has 469 places, 614 transitions, 6944 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:34:02,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 629 transitions, 8226 flow [2024-06-28 03:34:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 629 transitions, 8088 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:34:12,526 INFO L231 Difference]: Finished difference. Result has 470 places, 614 transitions, 6922 flow [2024-06-28 03:34:12,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6806, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6922, PETRI_PLACES=470, PETRI_TRANSITIONS=614} [2024-06-28 03:34:12,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-28 03:34:12,526 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 614 transitions, 6922 flow [2024-06-28 03:34:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:12,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:12,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:34:12,527 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:12,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -973170785, now seen corresponding path program 10 times [2024-06-28 03:34:12,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:12,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570208616] [2024-06-28 03:34:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:13,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:13,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570208616] [2024-06-28 03:34:13,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570208616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:13,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:13,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772531259] [2024-06-28 03:34:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:13,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:13,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:13,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:34:13,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 614 transitions, 6922 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:13,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:13,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:34:13,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:15,934 INFO L124 PetriNetUnfolderBase]: 4229/6782 cut-off events. [2024-06-28 03:34:15,934 INFO L125 PetriNetUnfolderBase]: For 2023223/2023223 co-relation queries the response was YES. [2024-06-28 03:34:16,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73007 conditions, 6782 events. 4229/6782 cut-off events. For 2023223/2023223 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 42868 event pairs, 936 based on Foata normal form. 1/6770 useless extension candidates. Maximal degree in co-relation 72781. Up to 6484 conditions per place. [2024-06-28 03:34:16,048 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 582 selfloop transitions, 33 changer transitions 0/625 dead transitions. [2024-06-28 03:34:16,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 625 transitions, 8180 flow [2024-06-28 03:34:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:34:16,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 03:34:16,050 INFO L175 Difference]: Start difference. First operand has 470 places, 614 transitions, 6922 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:34:16,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 625 transitions, 8180 flow [2024-06-28 03:34:26,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 625 transitions, 7984 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:26,693 INFO L231 Difference]: Finished difference. Result has 470 places, 614 transitions, 6798 flow [2024-06-28 03:34:26,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6798, PETRI_PLACES=470, PETRI_TRANSITIONS=614} [2024-06-28 03:34:26,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-28 03:34:26,694 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 614 transitions, 6798 flow [2024-06-28 03:34:26,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:26,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:34:26,694 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:26,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash -736680899, now seen corresponding path program 1 times [2024-06-28 03:34:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866085623] [2024-06-28 03:34:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866085623] [2024-06-28 03:34:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866085623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:27,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:34:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008428777] [2024-06-28 03:34:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:27,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:34:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:34:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:34:28,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:34:28,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 614 transitions, 6798 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:28,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:28,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:34:28,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:30,441 INFO L124 PetriNetUnfolderBase]: 4436/7008 cut-off events. [2024-06-28 03:34:30,441 INFO L125 PetriNetUnfolderBase]: For 2358139/2358139 co-relation queries the response was YES. [2024-06-28 03:34:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78147 conditions, 7008 events. 4436/7008 cut-off events. For 2358139/2358139 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 43282 event pairs, 1005 based on Foata normal form. 2/7008 useless extension candidates. Maximal degree in co-relation 77920. Up to 6807 conditions per place. [2024-06-28 03:34:30,555 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 602 selfloop transitions, 22 changer transitions 0/628 dead transitions. [2024-06-28 03:34:30,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 628 transitions, 8154 flow [2024-06-28 03:34:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 03:34:30,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 03:34:30,556 INFO L175 Difference]: Start difference. First operand has 470 places, 614 transitions, 6798 flow. Second operand 9 states and 140 transitions. [2024-06-28 03:34:30,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 628 transitions, 8154 flow [2024-06-28 03:34:43,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 628 transitions, 8060 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:34:43,606 INFO L231 Difference]: Finished difference. Result has 471 places, 616 transitions, 6835 flow [2024-06-28 03:34:43,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6704, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6835, PETRI_PLACES=471, PETRI_TRANSITIONS=616} [2024-06-28 03:34:43,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-28 03:34:43,607 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 616 transitions, 6835 flow [2024-06-28 03:34:43,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:43,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:43,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:34:43,608 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:34:43,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -385625001, now seen corresponding path program 1 times [2024-06-28 03:34:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881817239] [2024-06-28 03:34:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881817239] [2024-06-28 03:34:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881817239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516352127] [2024-06-28 03:34:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:44,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:44,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:34:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 616 transitions, 6835 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:44,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:44,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:34:44,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:47,303 INFO L124 PetriNetUnfolderBase]: 4386/6978 cut-off events. [2024-06-28 03:34:47,303 INFO L125 PetriNetUnfolderBase]: For 2375816/2375816 co-relation queries the response was YES. [2024-06-28 03:34:47,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78445 conditions, 6978 events. 4386/6978 cut-off events. For 2375816/2375816 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 43523 event pairs, 828 based on Foata normal form. 1/6975 useless extension candidates. Maximal degree in co-relation 78217. Up to 6543 conditions per place. [2024-06-28 03:34:47,425 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 569 selfloop transitions, 32 changer transitions 0/652 dead transitions. [2024-06-28 03:34:47,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 652 transitions, 8336 flow [2024-06-28 03:34:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:34:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:34:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 03:34:47,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 03:34:47,426 INFO L175 Difference]: Start difference. First operand has 471 places, 616 transitions, 6835 flow. Second operand 10 states and 176 transitions. [2024-06-28 03:34:47,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 652 transitions, 8336 flow [2024-06-28 03:35:00,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 652 transitions, 8221 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:00,917 INFO L231 Difference]: Finished difference. Result has 476 places, 628 transitions, 7043 flow [2024-06-28 03:35:00,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6720, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7043, PETRI_PLACES=476, PETRI_TRANSITIONS=628} [2024-06-28 03:35:00,917 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 433 predicate places. [2024-06-28 03:35:00,917 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 628 transitions, 7043 flow [2024-06-28 03:35:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:00,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:00,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:35:00,918 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:35:00,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -385504845, now seen corresponding path program 1 times [2024-06-28 03:35:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254553671] [2024-06-28 03:35:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:02,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254553671] [2024-06-28 03:35:02,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254553671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:02,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961230694] [2024-06-28 03:35:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:02,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:35:02,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 628 transitions, 7043 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:02,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:02,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:35:02,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:04,433 INFO L124 PetriNetUnfolderBase]: 4480/7075 cut-off events. [2024-06-28 03:35:04,433 INFO L125 PetriNetUnfolderBase]: For 2402773/2402773 co-relation queries the response was YES. [2024-06-28 03:35:04,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79589 conditions, 7075 events. 4480/7075 cut-off events. For 2402773/2402773 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 43706 event pairs, 853 based on Foata normal form. 1/7074 useless extension candidates. Maximal degree in co-relation 79358. Up to 6725 conditions per place. [2024-06-28 03:35:04,557 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 574 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2024-06-28 03:35:04,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 659 transitions, 8961 flow [2024-06-28 03:35:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:35:04,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 03:35:04,559 INFO L175 Difference]: Start difference. First operand has 476 places, 628 transitions, 7043 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:35:04,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 659 transitions, 8961 flow Killed by 15