./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix032.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/mix032.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/mix032.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.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 03:16:24,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:16:24,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:16:24,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:16:24,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:16:24,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:16:24,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:16:24,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:16:24,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:16:24,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:16:24,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:16:24,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:16:24,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:16:24,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:16:24,780 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:16:24,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:16:24,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:16:24,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:16:24,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:16:24,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:16:24,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:16:24,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:16:24,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:16:24,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:16:24,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:16:24,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:16:24,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:16:24,784 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:16:24,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:16:24,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:16:24,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:16:24,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:24,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:16:24,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:16:24,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:16:24,787 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:16:24,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:16:24,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:16:24,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:16:25,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:16:25,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:16:25,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:16:25,030 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:16:25,031 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:16:25,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.opt.yml/witness.yml [2024-06-28 03:16:25,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:16:25,178 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:16:25,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix032.opt.i [2024-06-28 03:16:26,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:16:26,346 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:16:26,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix032.opt.i [2024-06-28 03:16:26,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8c95153/daccc18507d04986bb42a2b34d6efdc1/FLAG0ca57f76f [2024-06-28 03:16:26,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8c95153/daccc18507d04986bb42a2b34d6efdc1 [2024-06-28 03:16:26,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:16:26,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:16:26,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:26,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:16:26,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:16:26,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:25" (1/2) ... [2024-06-28 03:16:26,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc21d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:26, skipping insertion in model container [2024-06-28 03:16:26,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:25" (1/2) ... [2024-06-28 03:16:26,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28369ef4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:26, skipping insertion in model container [2024-06-28 03:16:26,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:26" (2/2) ... [2024-06-28 03:16:26,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26, skipping insertion in model container [2024-06-28 03:16:26,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:26" (2/2) ... [2024-06-28 03:16:26,382 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:16:26,470 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:16:26,471 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 03:16:26,472 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 03:16:26,472 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0) [2024-06-28 03:16:26,472 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:16:26,472 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-28 03:16:26,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:16:26,800 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:26,807 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:16:26,947 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:26,989 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:16:26,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26 WrapperNode [2024-06-28 03:16:26,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:26,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:26,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:16:26,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:16:26,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,041 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-28 03:16:27,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:27,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:16:27,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:16:27,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:16:27,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,083 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 03:16:27,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:16:27,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:16:27,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:16:27,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:16:27,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (1/1) ... [2024-06-28 03:16:27,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:16:27,166 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 03:16:27,168 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 03:16:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:16:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:16:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:16:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:16:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:16:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:16:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:16:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:16:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:16:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:16:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:16:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:16:27,195 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 03:16:27,293 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:16:27,295 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:16:27,547 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:16:27,547 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:16:27,710 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:16:27,711 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:16:27,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:27 BoogieIcfgContainer [2024-06-28 03:16:27,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:16:27,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:16:27,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:16:27,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:16:27,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:25" (1/4) ... [2024-06-28 03:16:27,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4905c318 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:16:27, skipping insertion in model container [2024-06-28 03:16:27,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:16:26" (2/4) ... [2024-06-28 03:16:27,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4905c318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:16:27, skipping insertion in model container [2024-06-28 03:16:27,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:26" (3/4) ... [2024-06-28 03:16:27,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4905c318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:16:27, skipping insertion in model container [2024-06-28 03:16:27,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:27" (4/4) ... [2024-06-28 03:16:27,722 INFO L112 eAbstractionObserver]: Analyzing ICFG mix032.opt.i [2024-06-28 03:16:27,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:16:27,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:16:27,735 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:16:27,776 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:16:27,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:27,831 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-28 03:16:27,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:16:27,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:27,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-28 03:16:27,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:16:27,855 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;@501980ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:16:27,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:16:27,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:16:27,861 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:16:27,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:27,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:27,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:16:27,862 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 03:16:27,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 373099719, now seen corresponding path program 1 times [2024-06-28 03:16:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384951405] [2024-06-28 03:16:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384951405] [2024-06-28 03:16:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384951405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:28,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:28,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:16:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404872831] [2024-06-28 03:16:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:16:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:29,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:16:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:16:29,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-06-28 03:16:29,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:29,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:29,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-06-28 03:16:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:29,356 INFO L124 PetriNetUnfolderBase]: 1059/1731 cut-off events. [2024-06-28 03:16:29,357 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 03:16:29,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3395 conditions, 1731 events. 1059/1731 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9218 event pairs, 698 based on Foata normal form. 1/1652 useless extension candidates. Maximal degree in co-relation 3383. Up to 1593 conditions per place. [2024-06-28 03:16:29,371 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:16:29,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 175 flow [2024-06-28 03:16:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:16:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:16:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-28 03:16:29,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-06-28 03:16:29,383 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 86 transitions. [2024-06-28 03:16:29,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 175 flow [2024-06-28 03:16:29,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:29,390 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:29,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:16:29,395 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 03:16:29,395 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:29,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:29,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:29,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:29,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:16:29,396 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 03:16:29,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2066583910, now seen corresponding path program 1 times [2024-06-28 03:16:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:29,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733294712] [2024-06-28 03:16:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:30,198 INFO 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 03:16:30,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733294712] [2024-06-28 03:16:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733294712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:30,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:30,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:16:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995709769] [2024-06-28 03:16:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:30,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:16:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:16:30,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:16:30,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-06-28 03:16:30,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:30,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:30,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-06-28 03:16:30,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:30,532 INFO L124 PetriNetUnfolderBase]: 1215/1930 cut-off events. [2024-06-28 03:16:30,532 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-28 03:16:30,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4341 conditions, 1930 events. 1215/1930 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10145 event pairs, 648 based on Foata normal form. 3/1906 useless extension candidates. Maximal degree in co-relation 4329. Up to 1803 conditions per place. [2024-06-28 03:16:30,542 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 39 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 03:16:30,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 244 flow [2024-06-28 03:16:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:16:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:16:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-28 03:16:30,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-06-28 03:16:30,546 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 109 transitions. [2024-06-28 03:16:30,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 244 flow [2024-06-28 03:16:30,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:16:30,549 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:16:30,550 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-28 03:16:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:30,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:16:30,553 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 03:16:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1541329897, now seen corresponding path program 1 times [2024-06-28 03:16:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279119400] [2024-06-28 03:16:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:31,780 INFO 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 03:16:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279119400] [2024-06-28 03:16:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279119400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:31,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:31,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:31,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987481321] [2024-06-28 03:16:31,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:31,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:31,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 03:16:31,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:31,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:31,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 03:16:31,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:32,221 INFO L124 PetriNetUnfolderBase]: 1545/2413 cut-off events. [2024-06-28 03:16:32,221 INFO L125 PetriNetUnfolderBase]: For 1270/1270 co-relation queries the response was YES. [2024-06-28 03:16:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5985 conditions, 2413 events. 1545/2413 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12392 event pairs, 575 based on Foata normal form. 6/2381 useless extension candidates. Maximal degree in co-relation 5971. Up to 2233 conditions per place. [2024-06-28 03:16:32,233 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 51 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 03:16:32,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 356 flow [2024-06-28 03:16:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 03:16:32,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-06-28 03:16:32,236 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 6 states and 150 transitions. [2024-06-28 03:16:32,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 356 flow [2024-06-28 03:16:32,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 336 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:16:32,238 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 185 flow [2024-06-28 03:16:32,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-28 03:16:32,239 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-06-28 03:16:32,239 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 185 flow [2024-06-28 03:16:32,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:32,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:32,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:32,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:16:32,240 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 03:16:32,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 760140791, now seen corresponding path program 1 times [2024-06-28 03:16:32,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:32,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150960594] [2024-06-28 03:16:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:32,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:32,872 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 03:16:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150960594] [2024-06-28 03:16:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150960594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:32,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:32,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760135744] [2024-06-28 03:16:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:32,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:32,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:32,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 03:16:32,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:32,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:32,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:33,383 INFO L124 PetriNetUnfolderBase]: 1333/2159 cut-off events. [2024-06-28 03:16:33,384 INFO L125 PetriNetUnfolderBase]: For 2120/2120 co-relation queries the response was YES. [2024-06-28 03:16:33,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 2159 events. 1333/2159 cut-off events. For 2120/2120 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11356 event pairs, 592 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 5796. Up to 1980 conditions per place. [2024-06-28 03:16:33,396 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 43 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 03:16:33,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 329 flow [2024-06-28 03:16:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 03:16:33,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:16:33,397 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 185 flow. Second operand 5 states and 110 transitions. [2024-06-28 03:16:33,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 329 flow [2024-06-28 03:16:33,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 302 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:33,401 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 202 flow [2024-06-28 03:16:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 03:16:33,402 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-28 03:16:33,402 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 202 flow [2024-06-28 03:16:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 03:16:33,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:33,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:16:33,403 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 03:16:33,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2077910643, now seen corresponding path program 1 times [2024-06-28 03:16:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662274651] [2024-06-28 03:16:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:33,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:34,137 INFO 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 03:16:34,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662274651] [2024-06-28 03:16:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662274651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:34,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:34,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:34,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859755156] [2024-06-28 03:16:34,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:34,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:34,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:34,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:34,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:34,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:34,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:34,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:34,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:34,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:34,746 INFO L124 PetriNetUnfolderBase]: 1571/2550 cut-off events. [2024-06-28 03:16:34,746 INFO L125 PetriNetUnfolderBase]: For 3658/3658 co-relation queries the response was YES. [2024-06-28 03:16:34,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 2550 events. 1571/2550 cut-off events. For 3658/3658 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13586 event pairs, 706 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 7274. Up to 2317 conditions per place. [2024-06-28 03:16:34,759 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 48 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-28 03:16:34,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 376 flow [2024-06-28 03:16:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 03:16:34,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-28 03:16:34,760 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 202 flow. Second operand 6 states and 125 transitions. [2024-06-28 03:16:34,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 376 flow [2024-06-28 03:16:34,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 356 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:34,763 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 236 flow [2024-06-28 03:16:34,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 03:16:34,764 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-28 03:16:34,764 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 236 flow [2024-06-28 03:16:34,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:34,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:34,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:16:34,765 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 03:16:34,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 944682456, now seen corresponding path program 1 times [2024-06-28 03:16:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87676528] [2024-06-28 03:16:34,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:34,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:35,477 INFO 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 03:16:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87676528] [2024-06-28 03:16:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87676528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:35,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720425326] [2024-06-28 03:16:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:35,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:35,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:35,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:35,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:35,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:36,060 INFO L124 PetriNetUnfolderBase]: 1718/2720 cut-off events. [2024-06-28 03:16:36,060 INFO L125 PetriNetUnfolderBase]: For 6155/6161 co-relation queries the response was YES. [2024-06-28 03:16:36,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2720 events. 1718/2720 cut-off events. For 6155/6161 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14275 event pairs, 749 based on Foata normal form. 6/2709 useless extension candidates. Maximal degree in co-relation 8504. Up to 2498 conditions per place. [2024-06-28 03:16:36,078 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 53 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-06-28 03:16:36,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 484 flow [2024-06-28 03:16:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 03:16:36,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:16:36,079 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 236 flow. Second operand 6 states and 132 transitions. [2024-06-28 03:16:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 484 flow [2024-06-28 03:16:36,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 454 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:36,085 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 292 flow [2024-06-28 03:16:36,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-06-28 03:16:36,087 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-28 03:16:36,088 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 292 flow [2024-06-28 03:16:36,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:36,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:36,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:36,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:16:36,088 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 03:16:36,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 363399090, now seen corresponding path program 2 times [2024-06-28 03:16:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492346176] [2024-06-28 03:16:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:36,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492346176] [2024-06-28 03:16:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492346176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58028581] [2024-06-28 03:16:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:36,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:36,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:36,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:36,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:36,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:37,337 INFO L124 PetriNetUnfolderBase]: 1713/2714 cut-off events. [2024-06-28 03:16:37,337 INFO L125 PetriNetUnfolderBase]: For 8331/8337 co-relation queries the response was YES. [2024-06-28 03:16:37,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 2714 events. 1713/2714 cut-off events. For 8331/8337 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14268 event pairs, 752 based on Foata normal form. 6/2702 useless extension candidates. Maximal degree in co-relation 9105. Up to 2493 conditions per place. [2024-06-28 03:16:37,360 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 48 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-28 03:16:37,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 458 flow [2024-06-28 03:16:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-28 03:16:37,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2024-06-28 03:16:37,361 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 292 flow. Second operand 6 states and 127 transitions. [2024-06-28 03:16:37,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 458 flow [2024-06-28 03:16:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 424 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 03:16:37,367 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 298 flow [2024-06-28 03:16:37,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-28 03:16:37,368 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-06-28 03:16:37,368 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 298 flow [2024-06-28 03:16:37,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 03:16:37,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:37,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:37,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:16:37,369 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 03:16:37,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash 350894806, now seen corresponding path program 1 times [2024-06-28 03:16:37,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:37,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591392516] [2024-06-28 03:16:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591392516] [2024-06-28 03:16:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591392516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865696609] [2024-06-28 03:16:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:38,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:38,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:38,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:38,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:38,864 INFO L124 PetriNetUnfolderBase]: 1567/2569 cut-off events. [2024-06-28 03:16:38,864 INFO L125 PetriNetUnfolderBase]: For 8128/8128 co-relation queries the response was YES. [2024-06-28 03:16:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2569 events. 1567/2569 cut-off events. For 8128/8128 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13753 event pairs, 652 based on Foata normal form. 4/2560 useless extension candidates. Maximal degree in co-relation 8501. Up to 2294 conditions per place. [2024-06-28 03:16:38,875 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 59 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-28 03:16:38,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 518 flow [2024-06-28 03:16:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 03:16:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-06-28 03:16:38,876 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 298 flow. Second operand 7 states and 145 transitions. [2024-06-28 03:16:38,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 518 flow [2024-06-28 03:16:38,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 474 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:38,881 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 320 flow [2024-06-28 03:16:38,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 03:16:38,884 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2024-06-28 03:16:38,884 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 320 flow [2024-06-28 03:16:38,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:38,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:38,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:16:38,884 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 03:16:38,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2013841752, now seen corresponding path program 1 times [2024-06-28 03:16:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163082266] [2024-06-28 03:16:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:39,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:39,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163082266] [2024-06-28 03:16:39,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163082266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:39,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:39,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572781219] [2024-06-28 03:16:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:39,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:39,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:39,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:39,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 320 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:39,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:39,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:40,455 INFO L124 PetriNetUnfolderBase]: 1714/2731 cut-off events. [2024-06-28 03:16:40,455 INFO L125 PetriNetUnfolderBase]: For 12078/12078 co-relation queries the response was YES. [2024-06-28 03:16:40,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 2731 events. 1714/2731 cut-off events. For 12078/12078 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14407 event pairs, 700 based on Foata normal form. 2/2719 useless extension candidates. Maximal degree in co-relation 9830. Up to 2498 conditions per place. [2024-06-28 03:16:40,470 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 66 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-28 03:16:40,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 570 flow [2024-06-28 03:16:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 03:16:40,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2024-06-28 03:16:40,471 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 320 flow. Second operand 7 states and 150 transitions. [2024-06-28 03:16:40,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 570 flow [2024-06-28 03:16:40,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 528 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:40,477 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 346 flow [2024-06-28 03:16:40,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 03:16:40,477 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-28 03:16:40,478 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 346 flow [2024-06-28 03:16:40,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:40,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:40,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:16:40,478 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 03:16:40,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -779614030, now seen corresponding path program 2 times [2024-06-28 03:16:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:40,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290426764] [2024-06-28 03:16:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:40,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:41,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:41,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290426764] [2024-06-28 03:16:41,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290426764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:41,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629168508] [2024-06-28 03:16:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:41,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:41,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:41,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:41,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:41,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:41,902 INFO L124 PetriNetUnfolderBase]: 1723/2755 cut-off events. [2024-06-28 03:16:41,902 INFO L125 PetriNetUnfolderBase]: For 15307/15313 co-relation queries the response was YES. [2024-06-28 03:16:41,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10506 conditions, 2755 events. 1723/2755 cut-off events. For 15307/15313 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14648 event pairs, 702 based on Foata normal form. 6/2746 useless extension candidates. Maximal degree in co-relation 10482. Up to 2465 conditions per place. [2024-06-28 03:16:41,918 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 59 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-28 03:16:41,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 676 flow [2024-06-28 03:16:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 03:16:41,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967532467532468 [2024-06-28 03:16:41,919 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 346 flow. Second operand 7 states and 153 transitions. [2024-06-28 03:16:41,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 676 flow [2024-06-28 03:16:41,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 632 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:41,926 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 432 flow [2024-06-28 03:16:41,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-28 03:16:41,927 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-06-28 03:16:41,927 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 432 flow [2024-06-28 03:16:41,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:41,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:41,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:41,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:16:41,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:41,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1819897506, now seen corresponding path program 1 times [2024-06-28 03:16:41,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:41,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498351168] [2024-06-28 03:16:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:41,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:42,725 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 03:16:42,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:42,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498351168] [2024-06-28 03:16:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498351168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:42,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:42,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056969295] [2024-06-28 03:16:42,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:42,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:42,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:42,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 432 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 03:16:42,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:42,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:42,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:43,447 INFO L124 PetriNetUnfolderBase]: 1844/2880 cut-off events. [2024-06-28 03:16:43,447 INFO L125 PetriNetUnfolderBase]: For 19027/19033 co-relation queries the response was YES. [2024-06-28 03:16:43,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11568 conditions, 2880 events. 1844/2880 cut-off events. For 19027/19033 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14817 event pairs, 752 based on Foata normal form. 3/2867 useless extension candidates. Maximal degree in co-relation 11543. Up to 2651 conditions per place. [2024-06-28 03:16:43,461 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 70 selfloop transitions, 23 changer transitions 0/99 dead transitions. [2024-06-28 03:16:43,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 774 flow [2024-06-28 03:16:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 03:16:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:16:43,462 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 432 flow. Second operand 7 states and 147 transitions. [2024-06-28 03:16:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 774 flow [2024-06-28 03:16:43,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 732 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:43,471 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 506 flow [2024-06-28 03:16:43,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-06-28 03:16:43,472 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-06-28 03:16:43,472 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 506 flow [2024-06-28 03:16:43,472 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 03:16:43,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:43,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:43,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:16:43,472 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 03:16:43,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash -402280294, now seen corresponding path program 2 times [2024-06-28 03:16:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693334292] [2024-06-28 03:16:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:44,263 INFO 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 03:16:44,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:44,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693334292] [2024-06-28 03:16:44,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693334292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:44,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:44,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93119073] [2024-06-28 03:16:44,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:44,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:44,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:44,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 506 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 03:16:44,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:44,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:44,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:44,960 INFO L124 PetriNetUnfolderBase]: 1855/2897 cut-off events. [2024-06-28 03:16:44,960 INFO L125 PetriNetUnfolderBase]: For 22580/22586 co-relation queries the response was YES. [2024-06-28 03:16:44,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12292 conditions, 2897 events. 1855/2897 cut-off events. For 22580/22586 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14901 event pairs, 751 based on Foata normal form. 6/2886 useless extension candidates. Maximal degree in co-relation 12265. Up to 2663 conditions per place. [2024-06-28 03:16:44,975 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 66 selfloop transitions, 27 changer transitions 0/99 dead transitions. [2024-06-28 03:16:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 822 flow [2024-06-28 03:16:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 03:16:44,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:16:44,976 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 506 flow. Second operand 7 states and 143 transitions. [2024-06-28 03:16:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 822 flow [2024-06-28 03:16:44,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 786 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:44,986 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 566 flow [2024-06-28 03:16:44,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=566, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-06-28 03:16:44,987 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-28 03:16:44,987 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 566 flow [2024-06-28 03:16:44,987 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 03:16:44,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:44,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:44,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:16:44,987 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 03:16:44,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash -287875014, now seen corresponding path program 3 times [2024-06-28 03:16:44,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:44,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68583193] [2024-06-28 03:16:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:44,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:45,769 INFO 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 03:16:45,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68583193] [2024-06-28 03:16:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68583193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:45,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972141829] [2024-06-28 03:16:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:45,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:45,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:16:45,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 566 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:45,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:45,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:16:45,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:46,454 INFO L124 PetriNetUnfolderBase]: 1747/2784 cut-off events. [2024-06-28 03:16:46,454 INFO L125 PetriNetUnfolderBase]: For 25428/25431 co-relation queries the response was YES. [2024-06-28 03:16:46,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12140 conditions, 2784 events. 1747/2784 cut-off events. For 25428/25431 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14667 event pairs, 706 based on Foata normal form. 2/2767 useless extension candidates. Maximal degree in co-relation 12111. Up to 2487 conditions per place. [2024-06-28 03:16:46,469 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 60 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-28 03:16:46,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 786 flow [2024-06-28 03:16:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 03:16:46,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-06-28 03:16:46,470 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 566 flow. Second operand 7 states and 148 transitions. [2024-06-28 03:16:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 786 flow [2024-06-28 03:16:46,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 702 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:46,485 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 542 flow [2024-06-28 03:16:46,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-28 03:16:46,486 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2024-06-28 03:16:46,486 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 542 flow [2024-06-28 03:16:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:46,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:46,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:16:46,487 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 03:16:46,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:46,487 INFO L85 PathProgramCache]: Analyzing trace with hash -287874828, now seen corresponding path program 3 times [2024-06-28 03:16:46,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:46,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831568692] [2024-06-28 03:16:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:47,205 INFO 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 03:16:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831568692] [2024-06-28 03:16:47,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831568692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:47,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:47,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215765289] [2024-06-28 03:16:47,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:47,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:47,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 542 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 03:16:47,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:47,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:47,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:47,875 INFO L124 PetriNetUnfolderBase]: 1845/2883 cut-off events. [2024-06-28 03:16:47,875 INFO L125 PetriNetUnfolderBase]: For 28324/28330 co-relation queries the response was YES. [2024-06-28 03:16:47,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12737 conditions, 2883 events. 1845/2883 cut-off events. For 28324/28330 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14863 event pairs, 751 based on Foata normal form. 6/2872 useless extension candidates. Maximal degree in co-relation 12707. Up to 2651 conditions per place. [2024-06-28 03:16:47,888 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 65 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-28 03:16:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 97 transitions, 772 flow [2024-06-28 03:16:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:16:47,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-28 03:16:47,890 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 542 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:16:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 97 transitions, 772 flow [2024-06-28 03:16:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 97 transitions, 688 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:47,902 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 518 flow [2024-06-28 03:16:47,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-28 03:16:47,902 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-06-28 03:16:47,903 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 518 flow [2024-06-28 03:16:47,903 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 03:16:47,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:47,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:16:47,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:47,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash -870723043, now seen corresponding path program 1 times [2024-06-28 03:16:47,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:47,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531455814] [2024-06-28 03:16:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:47,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531455814] [2024-06-28 03:16:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531455814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:48,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109909018] [2024-06-28 03:16:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:48,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 03:16:48,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:48,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:48,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 03:16:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:49,065 INFO L124 PetriNetUnfolderBase]: 1386/2407 cut-off events. [2024-06-28 03:16:49,065 INFO L125 PetriNetUnfolderBase]: For 26296/26296 co-relation queries the response was YES. [2024-06-28 03:16:49,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10593 conditions, 2407 events. 1386/2407 cut-off events. For 26296/26296 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13759 event pairs, 588 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 10562. Up to 2045 conditions per place. [2024-06-28 03:16:49,077 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 62 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2024-06-28 03:16:49,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 698 flow [2024-06-28 03:16:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 03:16:49,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:16:49,078 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 518 flow. Second operand 5 states and 110 transitions. [2024-06-28 03:16:49,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 698 flow [2024-06-28 03:16:49,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 624 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:49,091 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 492 flow [2024-06-28 03:16:49,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-28 03:16:49,091 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-28 03:16:49,091 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 492 flow [2024-06-28 03:16:49,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:49,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:49,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:49,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:16:49,092 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:49,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1534018644, now seen corresponding path program 1 times [2024-06-28 03:16:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021942108] [2024-06-28 03:16:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:49,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:50,011 INFO 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 03:16:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:50,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021942108] [2024-06-28 03:16:50,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021942108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:50,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:50,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22595506] [2024-06-28 03:16:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:50,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:50,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:50,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:50,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 492 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 03:16:50,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:50,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:50,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:50,693 INFO L124 PetriNetUnfolderBase]: 1853/2893 cut-off events. [2024-06-28 03:16:50,693 INFO L125 PetriNetUnfolderBase]: For 34682/34682 co-relation queries the response was YES. [2024-06-28 03:16:50,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13475 conditions, 2893 events. 1853/2893 cut-off events. For 34682/34682 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14802 event pairs, 722 based on Foata normal form. 2/2892 useless extension candidates. Maximal degree in co-relation 13443. Up to 2693 conditions per place. [2024-06-28 03:16:50,705 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 90 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2024-06-28 03:16:50,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 816 flow [2024-06-28 03:16:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:16:50,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:16:50,706 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 492 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:16:50,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 816 flow [2024-06-28 03:16:50,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 790 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:50,720 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 550 flow [2024-06-28 03:16:50,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=550, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-28 03:16:50,720 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-06-28 03:16:50,721 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 550 flow [2024-06-28 03:16:50,721 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 03:16:50,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:50,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:16:50,721 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 03:16:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1601775735, now seen corresponding path program 1 times [2024-06-28 03:16:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329345779] [2024-06-28 03:16:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:51,560 INFO 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 03:16:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329345779] [2024-06-28 03:16:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329345779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:51,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:51,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048779272] [2024-06-28 03:16:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:51,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:51,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 550 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 03:16:51,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:51,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:51,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:52,413 INFO L124 PetriNetUnfolderBase]: 1875/2929 cut-off events. [2024-06-28 03:16:52,414 INFO L125 PetriNetUnfolderBase]: For 39993/39996 co-relation queries the response was YES. [2024-06-28 03:16:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 2929 events. 1875/2929 cut-off events. For 39993/39996 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15019 event pairs, 680 based on Foata normal form. 4/2929 useless extension candidates. Maximal degree in co-relation 14228. Up to 2620 conditions per place. [2024-06-28 03:16:52,427 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 83 selfloop transitions, 32 changer transitions 0/121 dead transitions. [2024-06-28 03:16:52,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 986 flow [2024-06-28 03:16:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 03:16:52,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-06-28 03:16:52,428 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 550 flow. Second operand 8 states and 170 transitions. [2024-06-28 03:16:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 986 flow [2024-06-28 03:16:52,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 926 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:52,482 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 636 flow [2024-06-28 03:16:52,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-06-28 03:16:52,483 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-28 03:16:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 636 flow [2024-06-28 03:16:52,483 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 03:16:52,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:52,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:16:52,484 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 03:16:52,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1601775518, now seen corresponding path program 2 times [2024-06-28 03:16:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891155730] [2024-06-28 03:16:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891155730] [2024-06-28 03:16:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891155730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:53,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:53,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928988191] [2024-06-28 03:16:53,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:53,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:53,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 636 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 03:16:53,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:53,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:53,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:54,135 INFO L124 PetriNetUnfolderBase]: 1902/2972 cut-off events. [2024-06-28 03:16:54,135 INFO L125 PetriNetUnfolderBase]: For 45962/45965 co-relation queries the response was YES. [2024-06-28 03:16:54,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 2972 events. 1902/2972 cut-off events. For 45962/45965 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15255 event pairs, 708 based on Foata normal form. 2/2970 useless extension candidates. Maximal degree in co-relation 15119. Up to 2642 conditions per place. [2024-06-28 03:16:54,148 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 79 selfloop transitions, 44 changer transitions 0/129 dead transitions. [2024-06-28 03:16:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 1220 flow [2024-06-28 03:16:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 03:16:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-06-28 03:16:54,150 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 636 flow. Second operand 8 states and 170 transitions. [2024-06-28 03:16:54,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 1220 flow [2024-06-28 03:16:54,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 1172 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:54,167 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 822 flow [2024-06-28 03:16:54,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-06-28 03:16:54,168 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-06-28 03:16:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 822 flow [2024-06-28 03:16:54,168 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 03:16:54,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:54,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:16:54,168 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 03:16:54,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1601769938, now seen corresponding path program 3 times [2024-06-28 03:16:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901380211] [2024-06-28 03:16:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:55,000 INFO 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 03:16:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:55,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901380211] [2024-06-28 03:16:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901380211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851641891] [2024-06-28 03:16:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:55,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:55,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 822 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 03:16:55,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:55,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:55,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:55,813 INFO L124 PetriNetUnfolderBase]: 1897/2965 cut-off events. [2024-06-28 03:16:55,813 INFO L125 PetriNetUnfolderBase]: For 51509/51512 co-relation queries the response was YES. [2024-06-28 03:16:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15758 conditions, 2965 events. 1897/2965 cut-off events. For 51509/51512 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15226 event pairs, 713 based on Foata normal form. 2/2963 useless extension candidates. Maximal degree in co-relation 15722. Up to 2637 conditions per place. [2024-06-28 03:16:55,827 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 78 selfloop transitions, 43 changer transitions 0/127 dead transitions. [2024-06-28 03:16:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 127 transitions, 1204 flow [2024-06-28 03:16:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:16:55,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 03:16:55,828 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 822 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:16:55,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 127 transitions, 1204 flow [2024-06-28 03:16:55,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 1120 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:55,850 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 832 flow [2024-06-28 03:16:55,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-06-28 03:16:55,850 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-06-28 03:16:55,850 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 832 flow [2024-06-28 03:16:55,850 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 03:16:55,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:55,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:16:55,851 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 03:16:55,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1341828049, now seen corresponding path program 2 times [2024-06-28 03:16:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050341213] [2024-06-28 03:16:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:55,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:56,698 INFO 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 03:16:56,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050341213] [2024-06-28 03:16:56,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050341213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:56,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:56,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:56,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856721712] [2024-06-28 03:16:56,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:56,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:56,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:56,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:56,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:56,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:56,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 832 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 03:16:56,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:56,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:56,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:57,521 INFO L124 PetriNetUnfolderBase]: 1919/2998 cut-off events. [2024-06-28 03:16:57,521 INFO L125 PetriNetUnfolderBase]: For 56759/56765 co-relation queries the response was YES. [2024-06-28 03:16:57,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16242 conditions, 2998 events. 1919/2998 cut-off events. For 56759/56765 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15397 event pairs, 671 based on Foata normal form. 8/3001 useless extension candidates. Maximal degree in co-relation 16204. Up to 2671 conditions per place. [2024-06-28 03:16:57,534 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 85 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-06-28 03:16:57,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 1258 flow [2024-06-28 03:16:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:16:57,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:16:57,536 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 832 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:16:57,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 1258 flow [2024-06-28 03:16:57,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 1152 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:57,559 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 850 flow [2024-06-28 03:16:57,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-06-28 03:16:57,560 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-06-28 03:16:57,560 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 850 flow [2024-06-28 03:16:57,560 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 03:16:57,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:57,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:57,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:16:57,561 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 03:16:57,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1745660468, now seen corresponding path program 4 times [2024-06-28 03:16:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:57,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886765288] [2024-06-28 03:16:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:57,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:58,386 INFO 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 03:16:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886765288] [2024-06-28 03:16:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886765288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:58,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144147516] [2024-06-28 03:16:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:58,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:58,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:58,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 850 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 03:16:58,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:58,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:58,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:59,161 INFO L124 PetriNetUnfolderBase]: 1930/3021 cut-off events. [2024-06-28 03:16:59,161 INFO L125 PetriNetUnfolderBase]: For 61630/61633 co-relation queries the response was YES. [2024-06-28 03:16:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16613 conditions, 3021 events. 1930/3021 cut-off events. For 61630/61633 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15527 event pairs, 719 based on Foata normal form. 2/3016 useless extension candidates. Maximal degree in co-relation 16574. Up to 2681 conditions per place. [2024-06-28 03:16:59,177 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 77 selfloop transitions, 47 changer transitions 0/130 dead transitions. [2024-06-28 03:16:59,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1288 flow [2024-06-28 03:16:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:16:59,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:16:59,178 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 850 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:16:59,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1288 flow [2024-06-28 03:16:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 1191 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:59,208 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 905 flow [2024-06-28 03:16:59,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=905, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2024-06-28 03:16:59,208 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-06-28 03:16:59,209 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 905 flow [2024-06-28 03:16:59,209 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 03:16:59,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:59,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:16:59,209 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 03:16:59,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -334183953, now seen corresponding path program 3 times [2024-06-28 03:16:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365887577] [2024-06-28 03:16:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:00,034 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 03:17:00,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:00,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365887577] [2024-06-28 03:17:00,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365887577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:00,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:00,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246459154] [2024-06-28 03:17:00,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:00,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:00,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:00,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:00,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 905 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 03:17:00,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:00,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:00,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:00,868 INFO L124 PetriNetUnfolderBase]: 1952/3056 cut-off events. [2024-06-28 03:17:00,869 INFO L125 PetriNetUnfolderBase]: For 67015/67021 co-relation queries the response was YES. [2024-06-28 03:17:00,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 3056 events. 1952/3056 cut-off events. For 67015/67021 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15795 event pairs, 671 based on Foata normal form. 8/3059 useless extension candidates. Maximal degree in co-relation 16882. Up to 2706 conditions per place. [2024-06-28 03:17:00,887 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 38 changer transitions 0/136 dead transitions. [2024-06-28 03:17:00,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 1348 flow [2024-06-28 03:17:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 03:17:00,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 03:17:00,888 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 905 flow. Second operand 8 states and 167 transitions. [2024-06-28 03:17:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 1348 flow [2024-06-28 03:17:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 1200 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:00,918 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 874 flow [2024-06-28 03:17:00,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-06-28 03:17:00,918 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-06-28 03:17:00,919 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 874 flow [2024-06-28 03:17:00,919 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 03:17:00,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:00,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:00,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:17:00,919 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 03:17:00,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -334184170, now seen corresponding path program 5 times [2024-06-28 03:17:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:00,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064835830] [2024-06-28 03:17:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:00,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:01,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064835830] [2024-06-28 03:17:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064835830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:01,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575202130] [2024-06-28 03:17:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:01,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:01,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 874 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 03:17:01,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:01,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:01,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:02,599 INFO L124 PetriNetUnfolderBase]: 1963/3074 cut-off events. [2024-06-28 03:17:02,599 INFO L125 PetriNetUnfolderBase]: For 71859/71862 co-relation queries the response was YES. [2024-06-28 03:17:02,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17225 conditions, 3074 events. 1963/3074 cut-off events. For 71859/71862 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15838 event pairs, 719 based on Foata normal form. 2/3069 useless extension candidates. Maximal degree in co-relation 17184. Up to 2725 conditions per place. [2024-06-28 03:17:02,617 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 81 selfloop transitions, 49 changer transitions 0/136 dead transitions. [2024-06-28 03:17:02,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 1324 flow [2024-06-28 03:17:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:17:02,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:17:02,618 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 874 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:17:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 1324 flow [2024-06-28 03:17:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 1226 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:02,683 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 924 flow [2024-06-28 03:17:02,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=924, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2024-06-28 03:17:02,684 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-06-28 03:17:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 924 flow [2024-06-28 03:17:02,684 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 03:17:02,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:02,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:02,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:17:02,685 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 03:17:02,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash -326832303, now seen corresponding path program 4 times [2024-06-28 03:17:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:02,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900387704] [2024-06-28 03:17:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:02,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:03,498 INFO 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 03:17:03,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:03,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900387704] [2024-06-28 03:17:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900387704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:03,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092408090] [2024-06-28 03:17:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:03,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:03,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:03,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:03,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 924 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 03:17:03,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:03,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:04,300 INFO L124 PetriNetUnfolderBase]: 1953/3063 cut-off events. [2024-06-28 03:17:04,300 INFO L125 PetriNetUnfolderBase]: For 76657/76663 co-relation queries the response was YES. [2024-06-28 03:17:04,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 3063 events. 1953/3063 cut-off events. For 76657/76663 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15832 event pairs, 669 based on Foata normal form. 8/3066 useless extension candidates. Maximal degree in co-relation 17272. Up to 2714 conditions per place. [2024-06-28 03:17:04,317 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 39 changer transitions 0/137 dead transitions. [2024-06-28 03:17:04,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 1250 flow [2024-06-28 03:17:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:17:04,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:17:04,318 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 924 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:17:04,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 1250 flow [2024-06-28 03:17:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 137 transitions, 1120 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:04,356 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 880 flow [2024-06-28 03:17:04,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-06-28 03:17:04,356 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-28 03:17:04,356 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 880 flow [2024-06-28 03:17:04,356 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 03:17:04,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:04,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:04,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:17:04,357 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:04,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash -326832520, now seen corresponding path program 6 times [2024-06-28 03:17:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:04,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110396714] [2024-06-28 03:17:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:04,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:05,169 INFO 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 03:17:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110396714] [2024-06-28 03:17:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110396714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484028739] [2024-06-28 03:17:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:05,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:05,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 880 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 03:17:05,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:05,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:05,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:05,917 INFO L124 PetriNetUnfolderBase]: 1948/3058 cut-off events. [2024-06-28 03:17:05,917 INFO L125 PetriNetUnfolderBase]: For 81139/81142 co-relation queries the response was YES. [2024-06-28 03:17:05,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17425 conditions, 3058 events. 1948/3058 cut-off events. For 81139/81142 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15825 event pairs, 717 based on Foata normal form. 2/3053 useless extension candidates. Maximal degree in co-relation 17382. Up to 2706 conditions per place. [2024-06-28 03:17:05,935 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 76 selfloop transitions, 52 changer transitions 0/134 dead transitions. [2024-06-28 03:17:05,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 134 transitions, 1194 flow [2024-06-28 03:17:05,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:17:05,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:17:05,936 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 880 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:17:05,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 134 transitions, 1194 flow [2024-06-28 03:17:05,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 1064 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:05,985 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 862 flow [2024-06-28 03:17:05,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-06-28 03:17:05,985 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-28 03:17:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 862 flow [2024-06-28 03:17:05,985 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 03:17:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:05,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:17:05,986 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:05,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1222608917, now seen corresponding path program 1 times [2024-06-28 03:17:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934843154] [2024-06-28 03:17:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:06,837 INFO 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 03:17:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934843154] [2024-06-28 03:17:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934843154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:06,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:06,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:06,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126200422] [2024-06-28 03:17:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:06,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:06,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:06,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:06,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:07,303 INFO L124 PetriNetUnfolderBase]: 1673/2795 cut-off events. [2024-06-28 03:17:07,303 INFO L125 PetriNetUnfolderBase]: For 84425/84425 co-relation queries the response was YES. [2024-06-28 03:17:07,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16184 conditions, 2795 events. 1673/2795 cut-off events. For 84425/84425 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15648 event pairs, 666 based on Foata normal form. 1/2793 useless extension candidates. Maximal degree in co-relation 16140. Up to 2442 conditions per place. [2024-06-28 03:17:07,320 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 84 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2024-06-28 03:17:07,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 1098 flow [2024-06-28 03:17:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 03:17:07,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:17:07,321 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 862 flow. Second operand 6 states and 123 transitions. [2024-06-28 03:17:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 1098 flow [2024-06-28 03:17:07,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 970 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:07,367 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 792 flow [2024-06-28 03:17:07,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-06-28 03:17:07,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-06-28 03:17:07,367 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 792 flow [2024-06-28 03:17:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:07,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:17:07,368 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 03:17:07,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash 637040847, now seen corresponding path program 1 times [2024-06-28 03:17:07,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:07,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260479100] [2024-06-28 03:17:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:07,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260479100] [2024-06-28 03:17:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260479100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:08,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343752888] [2024-06-28 03:17:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:08,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:08,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:08,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:08,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 792 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:08,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:08,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:09,061 INFO L124 PetriNetUnfolderBase]: 1952/3099 cut-off events. [2024-06-28 03:17:09,061 INFO L125 PetriNetUnfolderBase]: For 107531/107531 co-relation queries the response was YES. [2024-06-28 03:17:09,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19081 conditions, 3099 events. 1952/3099 cut-off events. For 107531/107531 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16513 event pairs, 501 based on Foata normal form. 4/3100 useless extension candidates. Maximal degree in co-relation 19036. Up to 2710 conditions per place. [2024-06-28 03:17:09,082 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 117 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-28 03:17:09,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 1334 flow [2024-06-28 03:17:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 03:17:09,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-28 03:17:09,083 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 792 flow. Second operand 9 states and 191 transitions. [2024-06-28 03:17:09,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 1334 flow [2024-06-28 03:17:09,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 1298 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:09,140 INFO L231 Difference]: Finished difference. Result has 108 places, 118 transitions, 883 flow [2024-06-28 03:17:09,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=883, PETRI_PLACES=108, PETRI_TRANSITIONS=118} [2024-06-28 03:17:09,140 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-28 03:17:09,140 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 118 transitions, 883 flow [2024-06-28 03:17:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:09,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:17:09,141 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 03:17:09,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -309941545, now seen corresponding path program 2 times [2024-06-28 03:17:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:09,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426423767] [2024-06-28 03:17:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:10,053 INFO 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 03:17:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426423767] [2024-06-28 03:17:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426423767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:10,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191754285] [2024-06-28 03:17:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:10,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:10,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:10,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 118 transitions, 883 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:10,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:10,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,847 INFO L124 PetriNetUnfolderBase]: 1944/3087 cut-off events. [2024-06-28 03:17:10,847 INFO L125 PetriNetUnfolderBase]: For 114738/114738 co-relation queries the response was YES. [2024-06-28 03:17:10,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 3087 events. 1944/3087 cut-off events. For 114738/114738 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16449 event pairs, 659 based on Foata normal form. 4/3088 useless extension candidates. Maximal degree in co-relation 19387. Up to 2757 conditions per place. [2024-06-28 03:17:10,863 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 114 selfloop transitions, 16 changer transitions 0/148 dead transitions. [2024-06-28 03:17:10,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 1219 flow [2024-06-28 03:17:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:17:10,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 03:17:10,864 INFO L175 Difference]: Start difference. First operand has 108 places, 118 transitions, 883 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:17:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 1219 flow [2024-06-28 03:17:10,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 1135 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:10,918 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 838 flow [2024-06-28 03:17:10,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2024-06-28 03:17:10,919 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-28 03:17:10,919 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 838 flow [2024-06-28 03:17:10,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:10,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:10,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:17:10,920 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 03:17:10,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2000029521, now seen corresponding path program 1 times [2024-06-28 03:17:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:10,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257729989] [2024-06-28 03:17:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:11,871 INFO 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 03:17:11,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:11,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257729989] [2024-06-28 03:17:11,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257729989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:11,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:11,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772676020] [2024-06-28 03:17:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:11,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:11,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:12,713 INFO L124 PetriNetUnfolderBase]: 2072/3228 cut-off events. [2024-06-28 03:17:12,713 INFO L125 PetriNetUnfolderBase]: For 124166/124166 co-relation queries the response was YES. [2024-06-28 03:17:12,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20383 conditions, 3228 events. 2072/3228 cut-off events. For 124166/124166 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16797 event pairs, 683 based on Foata normal form. 4/3226 useless extension candidates. Maximal degree in co-relation 20335. Up to 2968 conditions per place. [2024-06-28 03:17:12,734 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 128 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-28 03:17:12,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 155 transitions, 1268 flow [2024-06-28 03:17:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:17:12,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 03:17:12,735 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 838 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:17:12,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 155 transitions, 1268 flow [2024-06-28 03:17:12,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 155 transitions, 1231 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:12,784 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 903 flow [2024-06-28 03:17:12,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=903, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2024-06-28 03:17:12,784 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-28 03:17:12,785 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 903 flow [2024-06-28 03:17:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:12,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:12,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:17:12,785 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 03:17:12,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1884743311, now seen corresponding path program 3 times [2024-06-28 03:17:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543027613] [2024-06-28 03:17:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:13,643 INFO 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 03:17:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543027613] [2024-06-28 03:17:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543027613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082726421] [2024-06-28 03:17:13,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:13,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:13,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:13,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:13,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:13,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:13,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:14,444 INFO L124 PetriNetUnfolderBase]: 1980/3147 cut-off events. [2024-06-28 03:17:14,444 INFO L125 PetriNetUnfolderBase]: For 132696/132699 co-relation queries the response was YES. [2024-06-28 03:17:14,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20583 conditions, 3147 events. 1980/3147 cut-off events. For 132696/132699 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16813 event pairs, 642 based on Foata normal form. 6/3149 useless extension candidates. Maximal degree in co-relation 20534. Up to 2768 conditions per place. [2024-06-28 03:17:14,465 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 104 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-28 03:17:14,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 150 transitions, 1279 flow [2024-06-28 03:17:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 03:17:14,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-06-28 03:17:14,466 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 903 flow. Second operand 8 states and 170 transitions. [2024-06-28 03:17:14,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 150 transitions, 1279 flow [2024-06-28 03:17:14,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 150 transitions, 1201 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:14,526 INFO L231 Difference]: Finished difference. Result has 114 places, 123 transitions, 936 flow [2024-06-28 03:17:14,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=936, PETRI_PLACES=114, PETRI_TRANSITIONS=123} [2024-06-28 03:17:14,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 69 predicate places. [2024-06-28 03:17:14,527 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 123 transitions, 936 flow [2024-06-28 03:17:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:14,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:14,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:17:14,527 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 03:17:14,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1884738351, now seen corresponding path program 2 times [2024-06-28 03:17:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768063123] [2024-06-28 03:17:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:15,432 INFO 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 03:17:15,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768063123] [2024-06-28 03:17:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768063123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:15,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41387210] [2024-06-28 03:17:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:15,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:15,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 123 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:15,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:15,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:16,394 INFO L124 PetriNetUnfolderBase]: 2143/3348 cut-off events. [2024-06-28 03:17:16,394 INFO L125 PetriNetUnfolderBase]: For 146053/146056 co-relation queries the response was YES. [2024-06-28 03:17:16,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22197 conditions, 3348 events. 2143/3348 cut-off events. For 146053/146056 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17602 event pairs, 630 based on Foata normal form. 4/3348 useless extension candidates. Maximal degree in co-relation 22147. Up to 2736 conditions per place. [2024-06-28 03:17:16,417 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 100 selfloop transitions, 64 changer transitions 0/171 dead transitions. [2024-06-28 03:17:16,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 171 transitions, 1758 flow [2024-06-28 03:17:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 03:17:16,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:17:16,418 INFO L175 Difference]: Start difference. First operand has 114 places, 123 transitions, 936 flow. Second operand 9 states and 198 transitions. [2024-06-28 03:17:16,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 171 transitions, 1758 flow [2024-06-28 03:17:16,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 1665 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:16,483 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1153 flow [2024-06-28 03:17:16,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1153, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-28 03:17:16,484 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-28 03:17:16,484 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1153 flow [2024-06-28 03:17:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:16,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:16,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:16,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:17:16,484 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 03:17:16,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -869778075, now seen corresponding path program 3 times [2024-06-28 03:17:16,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051268044] [2024-06-28 03:17:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051268044] [2024-06-28 03:17:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051268044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:17,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:17,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923554931] [2024-06-28 03:17:17,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:17,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:17,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:17,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:17,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1153 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:17,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:17,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:17,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:18,386 INFO L124 PetriNetUnfolderBase]: 2165/3385 cut-off events. [2024-06-28 03:17:18,386 INFO L125 PetriNetUnfolderBase]: For 157281/157284 co-relation queries the response was YES. [2024-06-28 03:17:18,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23111 conditions, 3385 events. 2165/3385 cut-off events. For 157281/157284 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17844 event pairs, 632 based on Foata normal form. 4/3385 useless extension candidates. Maximal degree in co-relation 23060. Up to 2755 conditions per place. [2024-06-28 03:17:18,407 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 70 changer transitions 0/173 dead transitions. [2024-06-28 03:17:18,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 173 transitions, 1879 flow [2024-06-28 03:17:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-28 03:17:18,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 03:17:18,408 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1153 flow. Second operand 9 states and 195 transitions. [2024-06-28 03:17:18,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 173 transitions, 1879 flow [2024-06-28 03:17:18,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 173 transitions, 1777 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:18,468 INFO L231 Difference]: Finished difference. Result has 122 places, 135 transitions, 1261 flow [2024-06-28 03:17:18,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1261, PETRI_PLACES=122, PETRI_TRANSITIONS=135} [2024-06-28 03:17:18,469 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2024-06-28 03:17:18,469 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 135 transitions, 1261 flow [2024-06-28 03:17:18,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:18,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:18,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:18,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:17:18,469 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:18,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:18,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1884565371, now seen corresponding path program 4 times [2024-06-28 03:17:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298281960] [2024-06-28 03:17:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:19,363 INFO 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 03:17:19,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:19,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298281960] [2024-06-28 03:17:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298281960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:19,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710054215] [2024-06-28 03:17:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:19,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:19,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 135 transitions, 1261 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:19,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:19,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:19,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:20,322 INFO L124 PetriNetUnfolderBase]: 2155/3371 cut-off events. [2024-06-28 03:17:20,322 INFO L125 PetriNetUnfolderBase]: For 163739/163742 co-relation queries the response was YES. [2024-06-28 03:17:20,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23323 conditions, 3371 events. 2155/3371 cut-off events. For 163739/163742 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17692 event pairs, 630 based on Foata normal form. 4/3371 useless extension candidates. Maximal degree in co-relation 23270. Up to 2747 conditions per place. [2024-06-28 03:17:20,346 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 97 selfloop transitions, 68 changer transitions 0/172 dead transitions. [2024-06-28 03:17:20,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 172 transitions, 1805 flow [2024-06-28 03:17:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-28 03:17:20,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 03:17:20,353 INFO L175 Difference]: Start difference. First operand has 122 places, 135 transitions, 1261 flow. Second operand 9 states and 195 transitions. [2024-06-28 03:17:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 172 transitions, 1805 flow [2024-06-28 03:17:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 172 transitions, 1634 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:20,426 INFO L231 Difference]: Finished difference. Result has 126 places, 135 transitions, 1234 flow [2024-06-28 03:17:20,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=126, PETRI_TRANSITIONS=135} [2024-06-28 03:17:20,426 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2024-06-28 03:17:20,426 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 135 transitions, 1234 flow [2024-06-28 03:17:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:20,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:17:20,427 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:20,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash 740482556, now seen corresponding path program 1 times [2024-06-28 03:17:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345464123] [2024-06-28 03:17:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:20,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:21,166 INFO 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 03:17:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345464123] [2024-06-28 03:17:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345464123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:21,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:21,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944424218] [2024-06-28 03:17:21,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:21,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:21,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 135 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:21,690 INFO L124 PetriNetUnfolderBase]: 1896/3102 cut-off events. [2024-06-28 03:17:21,690 INFO L125 PetriNetUnfolderBase]: For 168803/168811 co-relation queries the response was YES. [2024-06-28 03:17:21,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 3102 events. 1896/3102 cut-off events. For 168803/168811 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17307 event pairs, 641 based on Foata normal form. 2/3093 useless extension candidates. Maximal degree in co-relation 22051. Up to 2706 conditions per place. [2024-06-28 03:17:21,714 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 111 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-06-28 03:17:21,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 153 transitions, 1552 flow [2024-06-28 03:17:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 03:17:21,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 03:17:21,715 INFO L175 Difference]: Start difference. First operand has 126 places, 135 transitions, 1234 flow. Second operand 6 states and 129 transitions. [2024-06-28 03:17:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 153 transitions, 1552 flow [2024-06-28 03:17:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 153 transitions, 1390 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:21,802 INFO L231 Difference]: Finished difference. Result has 123 places, 138 transitions, 1143 flow [2024-06-28 03:17:21,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1143, PETRI_PLACES=123, PETRI_TRANSITIONS=138} [2024-06-28 03:17:21,802 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2024-06-28 03:17:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 138 transitions, 1143 flow [2024-06-28 03:17:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:21,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:21,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:21,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:17:21,803 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 03:17:21,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1769951495, now seen corresponding path program 4 times [2024-06-28 03:17:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101489171] [2024-06-28 03:17:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:22,643 INFO 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 03:17:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101489171] [2024-06-28 03:17:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101489171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:22,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:22,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311447679] [2024-06-28 03:17:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:22,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:22,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:22,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 138 transitions, 1143 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:22,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:22,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:23,461 INFO L124 PetriNetUnfolderBase]: 2069/3281 cut-off events. [2024-06-28 03:17:23,461 INFO L125 PetriNetUnfolderBase]: For 177090/177093 co-relation queries the response was YES. [2024-06-28 03:17:23,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23158 conditions, 3281 events. 2069/3281 cut-off events. For 177090/177093 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17547 event pairs, 659 based on Foata normal form. 4/3278 useless extension candidates. Maximal degree in co-relation 23103. Up to 2881 conditions per place. [2024-06-28 03:17:23,485 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 118 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-28 03:17:23,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 164 transitions, 1545 flow [2024-06-28 03:17:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 03:17:23,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 03:17:23,487 INFO L175 Difference]: Start difference. First operand has 123 places, 138 transitions, 1143 flow. Second operand 8 states and 167 transitions. [2024-06-28 03:17:23,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 164 transitions, 1545 flow [2024-06-28 03:17:23,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 164 transitions, 1498 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:23,557 INFO L231 Difference]: Finished difference. Result has 127 places, 140 transitions, 1213 flow [2024-06-28 03:17:23,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1213, PETRI_PLACES=127, PETRI_TRANSITIONS=140} [2024-06-28 03:17:23,557 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2024-06-28 03:17:23,557 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 140 transitions, 1213 flow [2024-06-28 03:17:23,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:23,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:23,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:23,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:17:23,558 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 03:17:23,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1719099217, now seen corresponding path program 5 times [2024-06-28 03:17:23,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:23,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273313449] [2024-06-28 03:17:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:24,462 INFO 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 03:17:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273313449] [2024-06-28 03:17:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273313449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451834748] [2024-06-28 03:17:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:24,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:24,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 140 transitions, 1213 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:24,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:24,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:24,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:25,396 INFO L124 PetriNetUnfolderBase]: 2205/3436 cut-off events. [2024-06-28 03:17:25,396 INFO L125 PetriNetUnfolderBase]: For 189535/189538 co-relation queries the response was YES. [2024-06-28 03:17:25,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24471 conditions, 3436 events. 2205/3436 cut-off events. For 189535/189538 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 18028 event pairs, 632 based on Foata normal form. 4/3433 useless extension candidates. Maximal degree in co-relation 24415. Up to 2794 conditions per place. [2024-06-28 03:17:25,421 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 73 changer transitions 0/176 dead transitions. [2024-06-28 03:17:25,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1830 flow [2024-06-28 03:17:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 03:17:25,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 03:17:25,423 INFO L175 Difference]: Start difference. First operand has 127 places, 140 transitions, 1213 flow. Second operand 9 states and 190 transitions. [2024-06-28 03:17:25,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1830 flow [2024-06-28 03:17:25,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 176 transitions, 1731 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:25,485 INFO L231 Difference]: Finished difference. Result has 130 places, 143 transitions, 1333 flow [2024-06-28 03:17:25,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=130, PETRI_TRANSITIONS=143} [2024-06-28 03:17:25,486 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 85 predicate places. [2024-06-28 03:17:25,486 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 143 transitions, 1333 flow [2024-06-28 03:17:25,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:25,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:25,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:17:25,487 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:25,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1769773555, now seen corresponding path program 6 times [2024-06-28 03:17:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52479538] [2024-06-28 03:17:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:26,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:26,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52479538] [2024-06-28 03:17:26,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52479538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:26,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:26,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661731433] [2024-06-28 03:17:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:26,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:26,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:26,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 143 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:26,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:26,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:26,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:27,400 INFO L124 PetriNetUnfolderBase]: 2259/3529 cut-off events. [2024-06-28 03:17:27,400 INFO L125 PetriNetUnfolderBase]: For 204155/204158 co-relation queries the response was YES. [2024-06-28 03:17:27,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25634 conditions, 3529 events. 2259/3529 cut-off events. For 204155/204158 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18644 event pairs, 632 based on Foata normal form. 4/3526 useless extension candidates. Maximal degree in co-relation 25577. Up to 2840 conditions per place. [2024-06-28 03:17:27,424 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 76 changer transitions 0/185 dead transitions. [2024-06-28 03:17:27,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 185 transitions, 2193 flow [2024-06-28 03:17:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-28 03:17:27,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 03:17:27,425 INFO L175 Difference]: Start difference. First operand has 130 places, 143 transitions, 1333 flow. Second operand 9 states and 195 transitions. [2024-06-28 03:17:27,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 185 transitions, 2193 flow [2024-06-28 03:17:27,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 185 transitions, 1905 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:27,503 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 1347 flow [2024-06-28 03:17:27,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2024-06-28 03:17:27,503 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-28 03:17:27,503 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 1347 flow [2024-06-28 03:17:27,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:27,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:27,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:27,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:17:27,504 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:27,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:27,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1769767045, now seen corresponding path program 7 times [2024-06-28 03:17:27,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716927048] [2024-06-28 03:17:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:28,386 INFO 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 03:17:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716927048] [2024-06-28 03:17:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716927048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:28,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:28,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101084859] [2024-06-28 03:17:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:28,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:28,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:28,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 1347 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:28,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:28,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:28,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:29,402 INFO L124 PetriNetUnfolderBase]: 2249/3515 cut-off events. [2024-06-28 03:17:29,402 INFO L125 PetriNetUnfolderBase]: For 208638/208641 co-relation queries the response was YES. [2024-06-28 03:17:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25446 conditions, 3515 events. 2249/3515 cut-off events. For 208638/208641 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18572 event pairs, 632 based on Foata normal form. 4/3512 useless extension candidates. Maximal degree in co-relation 25388. Up to 2832 conditions per place. [2024-06-28 03:17:29,429 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 98 selfloop transitions, 77 changer transitions 0/182 dead transitions. [2024-06-28 03:17:29,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 182 transitions, 1919 flow [2024-06-28 03:17:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 03:17:29,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-28 03:17:29,431 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 1347 flow. Second operand 9 states and 191 transitions. [2024-06-28 03:17:29,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 182 transitions, 1919 flow [2024-06-28 03:17:29,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 182 transitions, 1721 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:29,526 INFO L231 Difference]: Finished difference. Result has 135 places, 149 transitions, 1311 flow [2024-06-28 03:17:29,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=135, PETRI_TRANSITIONS=149} [2024-06-28 03:17:29,526 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-06-28 03:17:29,527 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 149 transitions, 1311 flow [2024-06-28 03:17:29,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:29,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:29,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:29,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:17:29,527 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:29,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1541872405, now seen corresponding path program 8 times [2024-06-28 03:17:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646971160] [2024-06-28 03:17:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:30,464 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 03:17:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646971160] [2024-06-28 03:17:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646971160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:30,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820120063] [2024-06-28 03:17:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:30,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:30,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:30,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 149 transitions, 1311 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:30,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:30,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:30,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:31,432 INFO L124 PetriNetUnfolderBase]: 2271/3557 cut-off events. [2024-06-28 03:17:31,432 INFO L125 PetriNetUnfolderBase]: For 219087/219090 co-relation queries the response was YES. [2024-06-28 03:17:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25802 conditions, 3557 events. 2271/3557 cut-off events. For 219087/219090 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18935 event pairs, 635 based on Foata normal form. 4/3554 useless extension candidates. Maximal degree in co-relation 25743. Up to 2851 conditions per place. [2024-06-28 03:17:31,457 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 95 selfloop transitions, 83 changer transitions 0/185 dead transitions. [2024-06-28 03:17:31,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 185 transitions, 1954 flow [2024-06-28 03:17:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 03:17:31,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:17:31,458 INFO L175 Difference]: Start difference. First operand has 135 places, 149 transitions, 1311 flow. Second operand 9 states and 189 transitions. [2024-06-28 03:17:31,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 185 transitions, 1954 flow [2024-06-28 03:17:31,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 185 transitions, 1786 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:31,536 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 1378 flow [2024-06-28 03:17:31,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1378, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2024-06-28 03:17:31,537 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-28 03:17:31,537 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 1378 flow [2024-06-28 03:17:31,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:31,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:31,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:31,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:17:31,538 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:31,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1541865895, now seen corresponding path program 9 times [2024-06-28 03:17:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:31,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594728457] [2024-06-28 03:17:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:32,436 INFO 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 03:17:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594728457] [2024-06-28 03:17:32,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594728457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:32,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:32,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585073688] [2024-06-28 03:17:32,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:32,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:32,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:32,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:32,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:32,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:33,463 INFO L124 PetriNetUnfolderBase]: 2293/3599 cut-off events. [2024-06-28 03:17:33,463 INFO L125 PetriNetUnfolderBase]: For 230351/230354 co-relation queries the response was YES. [2024-06-28 03:17:33,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26336 conditions, 3599 events. 2293/3599 cut-off events. For 230351/230354 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19226 event pairs, 635 based on Foata normal form. 4/3596 useless extension candidates. Maximal degree in co-relation 26276. Up to 2870 conditions per place. [2024-06-28 03:17:33,487 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 85 changer transitions 0/188 dead transitions. [2024-06-28 03:17:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 2031 flow [2024-06-28 03:17:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 03:17:33,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 03:17:33,490 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 1378 flow. Second operand 9 states and 190 transitions. [2024-06-28 03:17:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 2031 flow [2024-06-28 03:17:33,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 188 transitions, 1775 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:33,587 INFO L231 Difference]: Finished difference. Result has 137 places, 155 transitions, 1361 flow [2024-06-28 03:17:33,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=137, PETRI_TRANSITIONS=155} [2024-06-28 03:17:33,587 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2024-06-28 03:17:33,587 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 155 transitions, 1361 flow [2024-06-28 03:17:33,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:17:33,588 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 03:17:33,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:33,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1533591685, now seen corresponding path program 10 times [2024-06-28 03:17:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265699638] [2024-06-28 03:17:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265699638] [2024-06-28 03:17:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265699638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377484824] [2024-06-28 03:17:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:34,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:34,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 155 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:34,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:34,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:35,454 INFO L124 PetriNetUnfolderBase]: 2283/3585 cut-off events. [2024-06-28 03:17:35,454 INFO L125 PetriNetUnfolderBase]: For 236810/236813 co-relation queries the response was YES. [2024-06-28 03:17:35,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26194 conditions, 3585 events. 2283/3585 cut-off events. For 236810/236813 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19132 event pairs, 640 based on Foata normal form. 4/3582 useless extension candidates. Maximal degree in co-relation 26133. Up to 2862 conditions per place. [2024-06-28 03:17:35,481 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 92 changer transitions 0/185 dead transitions. [2024-06-28 03:17:35,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 185 transitions, 1791 flow [2024-06-28 03:17:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:17:35,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 03:17:35,482 INFO L175 Difference]: Start difference. First operand has 137 places, 155 transitions, 1361 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:17:35,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 185 transitions, 1791 flow [2024-06-28 03:17:35,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 185 transitions, 1569 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:35,604 INFO L231 Difference]: Finished difference. Result has 140 places, 155 transitions, 1331 flow [2024-06-28 03:17:35,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1331, PETRI_PLACES=140, PETRI_TRANSITIONS=155} [2024-06-28 03:17:35,605 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-28 03:17:35,605 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 155 transitions, 1331 flow [2024-06-28 03:17:35,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:35,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:35,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:35,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:17:35,606 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:35,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash 753815036, now seen corresponding path program 2 times [2024-06-28 03:17:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614071610] [2024-06-28 03:17:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:36,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:36,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614071610] [2024-06-28 03:17:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614071610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:36,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896204452] [2024-06-28 03:17:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:36,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:36,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:36,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 155 transitions, 1331 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:36,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:36,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:36,835 INFO L124 PetriNetUnfolderBase]: 1948/3203 cut-off events. [2024-06-28 03:17:36,835 INFO L125 PetriNetUnfolderBase]: For 241130/241130 co-relation queries the response was YES. [2024-06-28 03:17:36,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24550 conditions, 3203 events. 1948/3203 cut-off events. For 241130/241130 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18139 event pairs, 644 based on Foata normal form. 1/3174 useless extension candidates. Maximal degree in co-relation 24488. Up to 2783 conditions per place. [2024-06-28 03:17:36,862 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 120 selfloop transitions, 18 changer transitions 0/167 dead transitions. [2024-06-28 03:17:36,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 1667 flow [2024-06-28 03:17:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 03:17:36,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-28 03:17:36,863 INFO L175 Difference]: Start difference. First operand has 140 places, 155 transitions, 1331 flow. Second operand 6 states and 125 transitions. [2024-06-28 03:17:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 167 transitions, 1667 flow [2024-06-28 03:17:36,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 167 transitions, 1459 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:36,967 INFO L231 Difference]: Finished difference. Result has 137 places, 158 transitions, 1209 flow [2024-06-28 03:17:36,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1209, PETRI_PLACES=137, PETRI_TRANSITIONS=158} [2024-06-28 03:17:36,967 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2024-06-28 03:17:36,968 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 158 transitions, 1209 flow [2024-06-28 03:17:36,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:36,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:36,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:17:36,969 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:36,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2039531214, now seen corresponding path program 1 times [2024-06-28 03:17:36,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:36,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046403683] [2024-06-28 03:17:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046403683] [2024-06-28 03:17:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046403683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:37,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:37,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159634695] [2024-06-28 03:17:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:37,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:37,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 158 transitions, 1209 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:37,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:37,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:37,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:38,197 INFO L124 PetriNetUnfolderBase]: 1931/3211 cut-off events. [2024-06-28 03:17:38,198 INFO L125 PetriNetUnfolderBase]: For 218008/218008 co-relation queries the response was YES. [2024-06-28 03:17:38,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23110 conditions, 3211 events. 1931/3211 cut-off events. For 218008/218008 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18089 event pairs, 564 based on Foata normal form. 1/3209 useless extension candidates. Maximal degree in co-relation 23047. Up to 2774 conditions per place. [2024-06-28 03:17:38,223 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 143 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2024-06-28 03:17:38,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 173 transitions, 1585 flow [2024-06-28 03:17:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 03:17:38,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:17:38,224 INFO L175 Difference]: Start difference. First operand has 137 places, 158 transitions, 1209 flow. Second operand 6 states and 126 transitions. [2024-06-28 03:17:38,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 173 transitions, 1585 flow [2024-06-28 03:17:38,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 173 transitions, 1521 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:38,335 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 1217 flow [2024-06-28 03:17:38,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1217, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-06-28 03:17:38,335 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-28 03:17:38,335 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 1217 flow [2024-06-28 03:17:38,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 03:17:38,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:38,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:38,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:17:38,336 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:38,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1252522328, now seen corresponding path program 2 times [2024-06-28 03:17:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130673253] [2024-06-28 03:17:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:38,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:39,167 INFO 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 03:17:39,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130673253] [2024-06-28 03:17:39,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130673253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:39,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:39,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230780951] [2024-06-28 03:17:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:39,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:39,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 1217 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:39,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:39,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:39,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:39,736 INFO L124 PetriNetUnfolderBase]: 1928/3208 cut-off events. [2024-06-28 03:17:39,736 INFO L125 PetriNetUnfolderBase]: For 226230/226233 co-relation queries the response was YES. [2024-06-28 03:17:39,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 3208 events. 1928/3208 cut-off events. For 226230/226233 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18081 event pairs, 568 based on Foata normal form. 3/3207 useless extension candidates. Maximal degree in co-relation 23448. Up to 2764 conditions per place. [2024-06-28 03:17:39,757 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 138 selfloop transitions, 16 changer transitions 0/173 dead transitions. [2024-06-28 03:17:39,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 173 transitions, 1591 flow [2024-06-28 03:17:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 03:17:39,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-28 03:17:39,758 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 1217 flow. Second operand 6 states and 125 transitions. [2024-06-28 03:17:39,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 173 transitions, 1591 flow [2024-06-28 03:17:39,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 173 transitions, 1541 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:39,848 INFO L231 Difference]: Finished difference. Result has 141 places, 164 transitions, 1255 flow [2024-06-28 03:17:39,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1255, PETRI_PLACES=141, PETRI_TRANSITIONS=164} [2024-06-28 03:17:39,848 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-28 03:17:39,848 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 164 transitions, 1255 flow [2024-06-28 03:17:39,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:39,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:39,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:39,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:17:39,849 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 03:17:39,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1352694705, now seen corresponding path program 1 times [2024-06-28 03:17:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558335608] [2024-06-28 03:17:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:39,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:40,972 INFO 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 03:17:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558335608] [2024-06-28 03:17:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558335608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:40,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:40,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:40,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854808917] [2024-06-28 03:17:40,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:40,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:41,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 164 transitions, 1255 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:41,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:41,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:41,834 INFO L124 PetriNetUnfolderBase]: 2028/3301 cut-off events. [2024-06-28 03:17:41,834 INFO L125 PetriNetUnfolderBase]: For 235594/235594 co-relation queries the response was YES. [2024-06-28 03:17:41,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24303 conditions, 3301 events. 2028/3301 cut-off events. For 235594/235594 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18116 event pairs, 548 based on Foata normal form. 4/3302 useless extension candidates. Maximal degree in co-relation 24238. Up to 2912 conditions per place. [2024-06-28 03:17:41,859 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 170 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-28 03:17:41,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 197 transitions, 1773 flow [2024-06-28 03:17:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:17:41,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:17:41,862 INFO L175 Difference]: Start difference. First operand has 141 places, 164 transitions, 1255 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:17:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 197 transitions, 1773 flow [2024-06-28 03:17:41,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 1707 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:41,982 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 1314 flow [2024-06-28 03:17:41,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=147, PETRI_TRANSITIONS=169} [2024-06-28 03:17:41,983 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 102 predicate places. [2024-06-28 03:17:41,983 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 1314 flow [2024-06-28 03:17:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:41,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:41,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:41,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:17:41,983 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 03:17:41,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 753830908, now seen corresponding path program 1 times [2024-06-28 03:17:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:41,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747610688] [2024-06-28 03:17:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:42,935 INFO 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 03:17:42,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:42,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747610688] [2024-06-28 03:17:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747610688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:42,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214731704] [2024-06-28 03:17:42,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:42,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:43,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:43,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 169 transitions, 1314 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:43,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:43,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:43,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:43,502 INFO L124 PetriNetUnfolderBase]: 1850/3092 cut-off events. [2024-06-28 03:17:43,503 INFO L125 PetriNetUnfolderBase]: For 241131/241131 co-relation queries the response was YES. [2024-06-28 03:17:43,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24006 conditions, 3092 events. 1850/3092 cut-off events. For 241131/241131 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17499 event pairs, 568 based on Foata normal form. 1/3069 useless extension candidates. Maximal degree in co-relation 23939. Up to 2698 conditions per place. [2024-06-28 03:17:43,527 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 140 selfloop transitions, 14 changer transitions 0/182 dead transitions. [2024-06-28 03:17:43,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 182 transitions, 1684 flow [2024-06-28 03:17:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:17:43,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:43,528 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 1314 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:17:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 182 transitions, 1684 flow [2024-06-28 03:17:43,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 182 transitions, 1599 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:43,709 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1307 flow [2024-06-28 03:17:43,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1307, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-06-28 03:17:43,710 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 103 predicate places. [2024-06-28 03:17:43,710 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1307 flow [2024-06-28 03:17:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:43,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:43,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:17:43,710 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 03:17:43,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1960091435, now seen corresponding path program 1 times [2024-06-28 03:17:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933386016] [2024-06-28 03:17:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:44,686 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 03:17:44,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933386016] [2024-06-28 03:17:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933386016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926597656] [2024-06-28 03:17:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:44,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:44,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:44,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:44,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1307 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:44,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:44,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:44,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:45,677 INFO L124 PetriNetUnfolderBase]: 2311/3627 cut-off events. [2024-06-28 03:17:45,677 INFO L125 PetriNetUnfolderBase]: For 299597/299597 co-relation queries the response was YES. [2024-06-28 03:17:45,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28765 conditions, 3627 events. 2311/3627 cut-off events. For 299597/299597 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19222 event pairs, 451 based on Foata normal form. 4/3628 useless extension candidates. Maximal degree in co-relation 28697. Up to 3200 conditions per place. [2024-06-28 03:17:45,706 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 186 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-28 03:17:45,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 218 transitions, 2103 flow [2024-06-28 03:17:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:17:45,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-28 03:17:45,707 INFO L175 Difference]: Start difference. First operand has 148 places, 172 transitions, 1307 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:17:45,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 218 transitions, 2103 flow [2024-06-28 03:17:45,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 218 transitions, 2047 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:45,820 INFO L231 Difference]: Finished difference. Result has 153 places, 176 transitions, 1412 flow [2024-06-28 03:17:45,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1412, PETRI_PLACES=153, PETRI_TRANSITIONS=176} [2024-06-28 03:17:45,820 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2024-06-28 03:17:45,820 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 176 transitions, 1412 flow [2024-06-28 03:17:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:45,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:45,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:45,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:17:45,821 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 03:17:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1871377805, now seen corresponding path program 2 times [2024-06-28 03:17:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016781782] [2024-06-28 03:17:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:46,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016781782] [2024-06-28 03:17:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016781782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:46,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431555144] [2024-06-28 03:17:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:46,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:46,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 176 transitions, 1412 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:46,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:46,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:46,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:47,686 INFO L124 PetriNetUnfolderBase]: 2328/3654 cut-off events. [2024-06-28 03:17:47,687 INFO L125 PetriNetUnfolderBase]: For 313415/313415 co-relation queries the response was YES. [2024-06-28 03:17:47,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29420 conditions, 3654 events. 2328/3654 cut-off events. For 313415/313415 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19409 event pairs, 623 based on Foata normal form. 4/3655 useless extension candidates. Maximal degree in co-relation 29351. Up to 3337 conditions per place. [2024-06-28 03:17:47,717 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 186 selfloop transitions, 19 changer transitions 0/212 dead transitions. [2024-06-28 03:17:47,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 212 transitions, 1962 flow [2024-06-28 03:17:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 03:17:47,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:47,718 INFO L175 Difference]: Start difference. First operand has 153 places, 176 transitions, 1412 flow. Second operand 9 states and 180 transitions. [2024-06-28 03:17:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 212 transitions, 1962 flow [2024-06-28 03:17:47,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 212 transitions, 1861 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:47,880 INFO L231 Difference]: Finished difference. Result has 156 places, 178 transitions, 1414 flow [2024-06-28 03:17:47,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1414, PETRI_PLACES=156, PETRI_TRANSITIONS=178} [2024-06-28 03:17:47,880 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-28 03:17:47,880 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 178 transitions, 1414 flow [2024-06-28 03:17:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:47,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:47,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:47,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:17:47,881 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 03:17:47,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1877721387, now seen corresponding path program 3 times [2024-06-28 03:17:47,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:47,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698768174] [2024-06-28 03:17:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:47,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:48,890 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 03:17:48,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:48,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698768174] [2024-06-28 03:17:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698768174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:48,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:48,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285054125] [2024-06-28 03:17:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:49,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:49,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 178 transitions, 1414 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:49,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:49,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:49,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:49,814 INFO L124 PetriNetUnfolderBase]: 2320/3642 cut-off events. [2024-06-28 03:17:49,815 INFO L125 PetriNetUnfolderBase]: For 322146/322146 co-relation queries the response was YES. [2024-06-28 03:17:49,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29306 conditions, 3642 events. 2320/3642 cut-off events. For 322146/322146 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19313 event pairs, 616 based on Foata normal form. 4/3643 useless extension candidates. Maximal degree in co-relation 29235. Up to 3284 conditions per place. [2024-06-28 03:17:49,844 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 184 selfloop transitions, 22 changer transitions 0/213 dead transitions. [2024-06-28 03:17:49,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 1914 flow [2024-06-28 03:17:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:17:49,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:17:49,845 INFO L175 Difference]: Start difference. First operand has 156 places, 178 transitions, 1414 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:17:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 1914 flow [2024-06-28 03:17:50,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 213 transitions, 1823 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:50,022 INFO L231 Difference]: Finished difference. Result has 158 places, 178 transitions, 1374 flow [2024-06-28 03:17:50,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1374, PETRI_PLACES=158, PETRI_TRANSITIONS=178} [2024-06-28 03:17:50,022 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 113 predicate places. [2024-06-28 03:17:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 178 transitions, 1374 flow [2024-06-28 03:17:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:50,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:17:50,023 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 03:17:50,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1739189517, now seen corresponding path program 4 times [2024-06-28 03:17:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507643712] [2024-06-28 03:17:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:50,968 INFO 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 03:17:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507643712] [2024-06-28 03:17:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507643712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:50,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:50,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207224618] [2024-06-28 03:17:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:50,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:51,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:51,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 178 transitions, 1374 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:51,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:51,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:52,038 INFO L124 PetriNetUnfolderBase]: 2337/3670 cut-off events. [2024-06-28 03:17:52,038 INFO L125 PetriNetUnfolderBase]: For 334977/334980 co-relation queries the response was YES. [2024-06-28 03:17:52,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29668 conditions, 3670 events. 2337/3670 cut-off events. For 334977/334980 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19548 event pairs, 634 based on Foata normal form. 4/3670 useless extension candidates. Maximal degree in co-relation 29596. Up to 3226 conditions per place. [2024-06-28 03:17:52,072 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 153 selfloop transitions, 51 changer transitions 0/211 dead transitions. [2024-06-28 03:17:52,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 211 transitions, 1914 flow [2024-06-28 03:17:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:17:52,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 03:17:52,073 INFO L175 Difference]: Start difference. First operand has 158 places, 178 transitions, 1374 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:17:52,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 211 transitions, 1914 flow [2024-06-28 03:17:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 211 transitions, 1855 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:52,275 INFO L231 Difference]: Finished difference. Result has 159 places, 180 transitions, 1482 flow [2024-06-28 03:17:52,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=159, PETRI_TRANSITIONS=180} [2024-06-28 03:17:52,275 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-28 03:17:52,276 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 180 transitions, 1482 flow [2024-06-28 03:17:52,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:52,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:52,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:52,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:17:52,276 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 03:17:52,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1739193237, now seen corresponding path program 5 times [2024-06-28 03:17:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558023524] [2024-06-28 03:17:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558023524] [2024-06-28 03:17:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558023524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124668542] [2024-06-28 03:17:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:53,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:53,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 180 transitions, 1482 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:53,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:53,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:53,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:54,179 INFO L124 PetriNetUnfolderBase]: 2379/3736 cut-off events. [2024-06-28 03:17:54,179 INFO L125 PetriNetUnfolderBase]: For 355188/355191 co-relation queries the response was YES. [2024-06-28 03:17:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30842 conditions, 3736 events. 2379/3736 cut-off events. For 355188/355191 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19976 event pairs, 631 based on Foata normal form. 4/3736 useless extension candidates. Maximal degree in co-relation 30769. Up to 3227 conditions per place. [2024-06-28 03:17:54,213 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 155 selfloop transitions, 56 changer transitions 0/218 dead transitions. [2024-06-28 03:17:54,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 218 transitions, 2290 flow [2024-06-28 03:17:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 03:17:54,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 03:17:54,214 INFO L175 Difference]: Start difference. First operand has 159 places, 180 transitions, 1482 flow. Second operand 9 states and 188 transitions. [2024-06-28 03:17:54,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 218 transitions, 2290 flow [2024-06-28 03:17:54,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 218 transitions, 2141 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:54,391 INFO L231 Difference]: Finished difference. Result has 161 places, 184 transitions, 1572 flow [2024-06-28 03:17:54,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=161, PETRI_TRANSITIONS=184} [2024-06-28 03:17:54,391 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 116 predicate places. [2024-06-28 03:17:54,392 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 184 transitions, 1572 flow [2024-06-28 03:17:54,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:54,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:54,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:54,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:17:54,392 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 03:17:54,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2111473347, now seen corresponding path program 6 times [2024-06-28 03:17:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:54,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093035324] [2024-06-28 03:17:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:55,358 INFO 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 03:17:55,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:55,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093035324] [2024-06-28 03:17:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093035324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:55,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074504316] [2024-06-28 03:17:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:55,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:55,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:55,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 184 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:55,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:55,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:56,390 INFO L124 PetriNetUnfolderBase]: 2371/3724 cut-off events. [2024-06-28 03:17:56,391 INFO L125 PetriNetUnfolderBase]: For 364578/364581 co-relation queries the response was YES. [2024-06-28 03:17:56,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30910 conditions, 3724 events. 2371/3724 cut-off events. For 364578/364581 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19902 event pairs, 634 based on Foata normal form. 4/3724 useless extension candidates. Maximal degree in co-relation 30836. Up to 3280 conditions per place. [2024-06-28 03:17:56,424 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 156 selfloop transitions, 52 changer transitions 0/215 dead transitions. [2024-06-28 03:17:56,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 215 transitions, 2066 flow [2024-06-28 03:17:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:17:56,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:17:56,425 INFO L175 Difference]: Start difference. First operand has 161 places, 184 transitions, 1572 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:17:56,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 215 transitions, 2066 flow [2024-06-28 03:17:56,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 215 transitions, 1908 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:56,638 INFO L231 Difference]: Finished difference. Result has 165 places, 184 transitions, 1525 flow [2024-06-28 03:17:56,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=165, PETRI_TRANSITIONS=184} [2024-06-28 03:17:56,639 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 120 predicate places. [2024-06-28 03:17:56,639 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 184 transitions, 1525 flow [2024-06-28 03:17:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:56,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:56,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:56,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:17:56,640 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:56,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1480124396, now seen corresponding path program 1 times [2024-06-28 03:17:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504118977] [2024-06-28 03:17:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:57,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504118977] [2024-06-28 03:17:57,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504118977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:57,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:57,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77239844] [2024-06-28 03:17:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:57,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:57,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:57,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 184 transitions, 1525 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:57,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:57,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:57,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:58,150 INFO L124 PetriNetUnfolderBase]: 2146/3473 cut-off events. [2024-06-28 03:17:58,150 INFO L125 PetriNetUnfolderBase]: For 369834/369846 co-relation queries the response was YES. [2024-06-28 03:17:58,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29739 conditions, 3473 events. 2146/3473 cut-off events. For 369834/369846 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19361 event pairs, 652 based on Foata normal form. 2/3450 useless extension candidates. Maximal degree in co-relation 29663. Up to 3095 conditions per place. [2024-06-28 03:17:58,184 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 154 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2024-06-28 03:17:58,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 203 transitions, 1947 flow [2024-06-28 03:17:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:17:58,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:58,185 INFO L175 Difference]: Start difference. First operand has 165 places, 184 transitions, 1525 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:17:58,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 203 transitions, 1947 flow [2024-06-28 03:17:58,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 203 transitions, 1831 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:58,347 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 1495 flow [2024-06-28 03:17:58,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2024-06-28 03:17:58,347 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 119 predicate places. [2024-06-28 03:17:58,347 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 1495 flow [2024-06-28 03:17:58,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:58,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:58,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:17:58,348 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 03:17:58,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash -553409097, now seen corresponding path program 7 times [2024-06-28 03:17:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274158363] [2024-06-28 03:17:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:59,295 INFO 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 03:17:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274158363] [2024-06-28 03:17:59,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274158363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:59,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:59,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:59,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437132699] [2024-06-28 03:17:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:59,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:59,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:59,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 1495 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:59,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:00,378 INFO L124 PetriNetUnfolderBase]: 2412/3779 cut-off events. [2024-06-28 03:18:00,378 INFO L125 PetriNetUnfolderBase]: For 391117/391120 co-relation queries the response was YES. [2024-06-28 03:18:00,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31993 conditions, 3779 events. 2412/3779 cut-off events. For 391117/391120 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 20236 event pairs, 639 based on Foata normal form. 4/3776 useless extension candidates. Maximal degree in co-relation 31916. Up to 3333 conditions per place. [2024-06-28 03:18:00,409 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 155 selfloop transitions, 54 changer transitions 0/217 dead transitions. [2024-06-28 03:18:00,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 217 transitions, 2045 flow [2024-06-28 03:18:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 03:18:00,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:18:00,410 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 1495 flow. Second operand 9 states and 180 transitions. [2024-06-28 03:18:00,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 217 transitions, 2045 flow [2024-06-28 03:18:00,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 217 transitions, 1981 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:00,629 INFO L231 Difference]: Finished difference. Result has 168 places, 189 transitions, 1612 flow [2024-06-28 03:18:00,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=168, PETRI_TRANSITIONS=189} [2024-06-28 03:18:00,629 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 123 predicate places. [2024-06-28 03:18:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 189 transitions, 1612 flow [2024-06-28 03:18:00,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:00,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:00,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:00,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:18:00,630 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 03:18:00,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash 966227465, now seen corresponding path program 8 times [2024-06-28 03:18:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:00,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685861396] [2024-06-28 03:18:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:01,566 INFO 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 03:18:01,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:01,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685861396] [2024-06-28 03:18:01,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685861396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:01,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:01,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305687307] [2024-06-28 03:18:01,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:01,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:01,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:01,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 189 transitions, 1612 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:01,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:01,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:01,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:02,582 INFO L124 PetriNetUnfolderBase]: 2429/3806 cut-off events. [2024-06-28 03:18:02,582 INFO L125 PetriNetUnfolderBase]: For 407264/407267 co-relation queries the response was YES. [2024-06-28 03:18:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32758 conditions, 3806 events. 2429/3806 cut-off events. For 407264/407267 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20400 event pairs, 644 based on Foata normal form. 4/3803 useless extension candidates. Maximal degree in co-relation 32680. Up to 3360 conditions per place. [2024-06-28 03:18:02,618 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 159 selfloop transitions, 52 changer transitions 0/219 dead transitions. [2024-06-28 03:18:02,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 219 transitions, 2170 flow [2024-06-28 03:18:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:18:02,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 03:18:02,619 INFO L175 Difference]: Start difference. First operand has 168 places, 189 transitions, 1612 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:18:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 219 transitions, 2170 flow [2024-06-28 03:18:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2007 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:02,842 INFO L231 Difference]: Finished difference. Result has 170 places, 191 transitions, 1630 flow [2024-06-28 03:18:02,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=170, PETRI_TRANSITIONS=191} [2024-06-28 03:18:02,843 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 125 predicate places. [2024-06-28 03:18:02,843 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 191 transitions, 1630 flow [2024-06-28 03:18:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:02,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:02,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:18:02,843 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 03:18:02,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 966079595, now seen corresponding path program 9 times [2024-06-28 03:18:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:02,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421172106] [2024-06-28 03:18:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:03,773 INFO 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 03:18:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421172106] [2024-06-28 03:18:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421172106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594734351] [2024-06-28 03:18:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:03,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:03,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 191 transitions, 1630 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:03,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:03,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:03,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:04,766 INFO L124 PetriNetUnfolderBase]: 2446/3833 cut-off events. [2024-06-28 03:18:04,766 INFO L125 PetriNetUnfolderBase]: For 422809/422812 co-relation queries the response was YES. [2024-06-28 03:18:04,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33271 conditions, 3833 events. 2446/3833 cut-off events. For 422809/422812 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20573 event pairs, 639 based on Foata normal form. 4/3830 useless extension candidates. Maximal degree in co-relation 33192. Up to 3304 conditions per place. [2024-06-28 03:18:04,802 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 159 selfloop transitions, 59 changer transitions 0/226 dead transitions. [2024-06-28 03:18:04,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 226 transitions, 2486 flow [2024-06-28 03:18:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:18:04,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:18:04,804 INFO L175 Difference]: Start difference. First operand has 170 places, 191 transitions, 1630 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:18:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 226 transitions, 2486 flow [2024-06-28 03:18:05,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 226 transitions, 2323 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:05,057 INFO L231 Difference]: Finished difference. Result has 172 places, 195 transitions, 1736 flow [2024-06-28 03:18:05,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1736, PETRI_PLACES=172, PETRI_TRANSITIONS=195} [2024-06-28 03:18:05,057 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2024-06-28 03:18:05,057 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 195 transitions, 1736 flow [2024-06-28 03:18:05,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:05,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:05,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:05,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:18:05,057 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:05,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:05,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1747110593, now seen corresponding path program 10 times [2024-06-28 03:18:05,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:05,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854207621] [2024-06-28 03:18:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:06,003 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 03:18:06,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:06,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854207621] [2024-06-28 03:18:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854207621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:06,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:06,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093144177] [2024-06-28 03:18:06,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:06,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:06,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:06,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:06,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:06,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 195 transitions, 1736 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:06,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:06,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:06,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:06,987 INFO L124 PetriNetUnfolderBase]: 2438/3821 cut-off events. [2024-06-28 03:18:06,987 INFO L125 PetriNetUnfolderBase]: For 432204/432207 co-relation queries the response was YES. [2024-06-28 03:18:07,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33251 conditions, 3821 events. 2438/3821 cut-off events. For 432204/432207 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 20482 event pairs, 642 based on Foata normal form. 4/3818 useless extension candidates. Maximal degree in co-relation 33171. Up to 3375 conditions per place. [2024-06-28 03:18:07,022 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 164 selfloop transitions, 51 changer transitions 0/223 dead transitions. [2024-06-28 03:18:07,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 223 transitions, 2236 flow [2024-06-28 03:18:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:18:07,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:18:07,023 INFO L175 Difference]: Start difference. First operand has 172 places, 195 transitions, 1736 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:18:07,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 223 transitions, 2236 flow [2024-06-28 03:18:07,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 223 transitions, 2056 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:07,281 INFO L231 Difference]: Finished difference. Result has 176 places, 195 transitions, 1665 flow [2024-06-28 03:18:07,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1665, PETRI_PLACES=176, PETRI_TRANSITIONS=195} [2024-06-28 03:18:07,281 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-06-28 03:18:07,281 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 195 transitions, 1665 flow [2024-06-28 03:18:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:07,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:07,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:07,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:18:07,282 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 03:18:07,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1893906506, now seen corresponding path program 2 times [2024-06-28 03:18:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:07,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107238590] [2024-06-28 03:18:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:07,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:08,178 INFO 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 03:18:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107238590] [2024-06-28 03:18:08,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107238590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:08,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:08,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238423890] [2024-06-28 03:18:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:08,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:08,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 195 transitions, 1665 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:08,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:08,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:08,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:08,767 INFO L124 PetriNetUnfolderBase]: 2184/3527 cut-off events. [2024-06-28 03:18:08,767 INFO L125 PetriNetUnfolderBase]: For 432721/432725 co-relation queries the response was YES. [2024-06-28 03:18:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31516 conditions, 3527 events. 2184/3527 cut-off events. For 432721/432725 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19731 event pairs, 662 based on Foata normal form. 5/3502 useless extension candidates. Maximal degree in co-relation 31434. Up to 3129 conditions per place. [2024-06-28 03:18:08,801 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 146 selfloop transitions, 29 changer transitions 0/212 dead transitions. [2024-06-28 03:18:08,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 212 transitions, 2251 flow [2024-06-28 03:18:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:18:08,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:18:08,802 INFO L175 Difference]: Start difference. First operand has 176 places, 195 transitions, 1665 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:18:08,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 212 transitions, 2251 flow [2024-06-28 03:18:09,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 212 transitions, 2130 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:09,043 INFO L231 Difference]: Finished difference. Result has 175 places, 201 transitions, 1710 flow [2024-06-28 03:18:09,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1710, PETRI_PLACES=175, PETRI_TRANSITIONS=201} [2024-06-28 03:18:09,043 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 130 predicate places. [2024-06-28 03:18:09,043 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 201 transitions, 1710 flow [2024-06-28 03:18:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:09,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:09,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:18:09,044 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:09,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:09,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1893431276, now seen corresponding path program 3 times [2024-06-28 03:18:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:09,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309654881] [2024-06-28 03:18:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:09,938 INFO 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 03:18:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309654881] [2024-06-28 03:18:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309654881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:09,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861454097] [2024-06-28 03:18:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:10,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:10,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 201 transitions, 1710 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:10,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:10,536 INFO L124 PetriNetUnfolderBase]: 2181/3523 cut-off events. [2024-06-28 03:18:10,536 INFO L125 PetriNetUnfolderBase]: For 446915/446919 co-relation queries the response was YES. [2024-06-28 03:18:10,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31867 conditions, 3523 events. 2181/3523 cut-off events. For 446915/446919 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 19718 event pairs, 662 based on Foata normal form. 5/3498 useless extension candidates. Maximal degree in co-relation 31784. Up to 3126 conditions per place. [2024-06-28 03:18:10,571 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 146 selfloop transitions, 28 changer transitions 0/211 dead transitions. [2024-06-28 03:18:10,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 211 transitions, 2082 flow [2024-06-28 03:18:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:18:10,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:18:10,572 INFO L175 Difference]: Start difference. First operand has 175 places, 201 transitions, 1710 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:18:10,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 211 transitions, 2082 flow [2024-06-28 03:18:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 211 transitions, 1987 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:10,953 INFO L231 Difference]: Finished difference. Result has 179 places, 201 transitions, 1677 flow [2024-06-28 03:18:10,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=179, PETRI_TRANSITIONS=201} [2024-06-28 03:18:10,954 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 134 predicate places. [2024-06-28 03:18:10,954 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 201 transitions, 1677 flow [2024-06-28 03:18:10,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:10,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:10,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:18:10,954 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 03:18:10,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1657260690, now seen corresponding path program 1 times [2024-06-28 03:18:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457995849] [2024-06-28 03:18:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:11,706 INFO 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 03:18:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457995849] [2024-06-28 03:18:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457995849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811016915] [2024-06-28 03:18:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:11,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:11,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 201 transitions, 1677 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:11,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:11,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:11,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:12,444 INFO L124 PetriNetUnfolderBase]: 2206/3572 cut-off events. [2024-06-28 03:18:12,444 INFO L125 PetriNetUnfolderBase]: For 401725/401725 co-relation queries the response was YES. [2024-06-28 03:18:12,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30433 conditions, 3572 events. 2206/3572 cut-off events. For 401725/401725 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19695 event pairs, 540 based on Foata normal form. 1/3570 useless extension candidates. Maximal degree in co-relation 30348. Up to 3212 conditions per place. [2024-06-28 03:18:12,477 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 195 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-06-28 03:18:12,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2191 flow [2024-06-28 03:18:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:18:12,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:18:12,478 INFO L175 Difference]: Start difference. First operand has 179 places, 201 transitions, 1677 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:18:12,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2191 flow [2024-06-28 03:18:12,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 220 transitions, 2117 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:12,735 INFO L231 Difference]: Finished difference. Result has 180 places, 204 transitions, 1699 flow [2024-06-28 03:18:12,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1699, PETRI_PLACES=180, PETRI_TRANSITIONS=204} [2024-06-28 03:18:12,736 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-28 03:18:12,736 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 204 transitions, 1699 flow [2024-06-28 03:18:12,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:12,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:12,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:12,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:18:12,737 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 03:18:12,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1199040166, now seen corresponding path program 1 times [2024-06-28 03:18:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131086569] [2024-06-28 03:18:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:13,560 INFO 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 03:18:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131086569] [2024-06-28 03:18:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131086569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759093488] [2024-06-28 03:18:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:13,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:13,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 204 transitions, 1699 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:13,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:13,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:13,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:14,320 INFO L124 PetriNetUnfolderBase]: 2207/3575 cut-off events. [2024-06-28 03:18:14,320 INFO L125 PetriNetUnfolderBase]: For 410448/410448 co-relation queries the response was YES. [2024-06-28 03:18:14,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 3575 events. 2207/3575 cut-off events. For 410448/410448 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19782 event pairs, 582 based on Foata normal form. 1/3573 useless extension candidates. Maximal degree in co-relation 30469. Up to 3167 conditions per place. [2024-06-28 03:18:14,357 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 178 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-06-28 03:18:14,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 220 transitions, 2167 flow [2024-06-28 03:18:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:18:14,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-28 03:18:14,358 INFO L175 Difference]: Start difference. First operand has 180 places, 204 transitions, 1699 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:18:14,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 220 transitions, 2167 flow [2024-06-28 03:18:14,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2093 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:14,682 INFO L231 Difference]: Finished difference. Result has 182 places, 207 transitions, 1717 flow [2024-06-28 03:18:14,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1717, PETRI_PLACES=182, PETRI_TRANSITIONS=207} [2024-06-28 03:18:14,682 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 137 predicate places. [2024-06-28 03:18:14,683 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 207 transitions, 1717 flow [2024-06-28 03:18:14,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:14,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:14,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:18:14,683 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 03:18:14,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 442269986, now seen corresponding path program 2 times [2024-06-28 03:18:14,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:14,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966673006] [2024-06-28 03:18:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:14,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:15,579 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 03:18:15,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:15,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966673006] [2024-06-28 03:18:15,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966673006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:15,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:15,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:15,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871976987] [2024-06-28 03:18:15,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:15,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:15,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:15,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:15,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 207 transitions, 1717 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:16,285 INFO L124 PetriNetUnfolderBase]: 2226/3596 cut-off events. [2024-06-28 03:18:16,285 INFO L125 PetriNetUnfolderBase]: For 427758/427758 co-relation queries the response was YES. [2024-06-28 03:18:16,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31583 conditions, 3596 events. 2226/3596 cut-off events. For 427758/427758 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19814 event pairs, 539 based on Foata normal form. 1/3594 useless extension candidates. Maximal degree in co-relation 31496. Up to 3228 conditions per place. [2024-06-28 03:18:16,317 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 192 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2024-06-28 03:18:16,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 223 transitions, 2235 flow [2024-06-28 03:18:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:18:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-28 03:18:16,318 INFO L175 Difference]: Start difference. First operand has 182 places, 207 transitions, 1717 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:18:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 223 transitions, 2235 flow [2024-06-28 03:18:16,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 223 transitions, 2165 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:16,655 INFO L231 Difference]: Finished difference. Result has 184 places, 210 transitions, 1761 flow [2024-06-28 03:18:16,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1761, PETRI_PLACES=184, PETRI_TRANSITIONS=210} [2024-06-28 03:18:16,656 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 139 predicate places. [2024-06-28 03:18:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 210 transitions, 1761 flow [2024-06-28 03:18:16,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:16,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:16,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:18:16,656 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 03:18:16,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1663926930, now seen corresponding path program 3 times [2024-06-28 03:18:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253561880] [2024-06-28 03:18:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253561880] [2024-06-28 03:18:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253561880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55998043] [2024-06-28 03:18:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:17,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:17,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:17,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 210 transitions, 1761 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:17,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:17,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:18,194 INFO L124 PetriNetUnfolderBase]: 2223/3593 cut-off events. [2024-06-28 03:18:18,195 INFO L125 PetriNetUnfolderBase]: For 439126/439129 co-relation queries the response was YES. [2024-06-28 03:18:18,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31959 conditions, 3593 events. 2223/3593 cut-off events. For 439126/439129 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19812 event pairs, 547 based on Foata normal form. 1/3590 useless extension candidates. Maximal degree in co-relation 31871. Up to 3215 conditions per place. [2024-06-28 03:18:18,228 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 185 selfloop transitions, 26 changer transitions 0/223 dead transitions. [2024-06-28 03:18:18,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 2277 flow [2024-06-28 03:18:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:18:18,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:18:18,229 INFO L175 Difference]: Start difference. First operand has 184 places, 210 transitions, 1761 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:18:18,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 2277 flow [2024-06-28 03:18:18,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 2185 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:18,585 INFO L231 Difference]: Finished difference. Result has 186 places, 213 transitions, 1803 flow [2024-06-28 03:18:18,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1803, PETRI_PLACES=186, PETRI_TRANSITIONS=213} [2024-06-28 03:18:18,585 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 141 predicate places. [2024-06-28 03:18:18,585 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 213 transitions, 1803 flow [2024-06-28 03:18:18,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:18,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:18,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:18,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:18:18,586 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 03:18:18,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1663927178, now seen corresponding path program 2 times [2024-06-28 03:18:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:18,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642396090] [2024-06-28 03:18:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:19,585 INFO 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 03:18:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642396090] [2024-06-28 03:18:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642396090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991437730] [2024-06-28 03:18:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:19,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:19,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:19,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 213 transitions, 1803 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:19,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:19,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:19,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:20,307 INFO L124 PetriNetUnfolderBase]: 2219/3591 cut-off events. [2024-06-28 03:18:20,307 INFO L125 PetriNetUnfolderBase]: For 445593/445596 co-relation queries the response was YES. [2024-06-28 03:18:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31979 conditions, 3591 events. 2219/3591 cut-off events. For 445593/445596 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19903 event pairs, 586 based on Foata normal form. 3/3590 useless extension candidates. Maximal degree in co-relation 31890. Up to 3160 conditions per place. [2024-06-28 03:18:20,343 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 173 selfloop transitions, 28 changer transitions 0/231 dead transitions. [2024-06-28 03:18:20,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 231 transitions, 2489 flow [2024-06-28 03:18:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:18:20,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:18:20,344 INFO L175 Difference]: Start difference. First operand has 186 places, 213 transitions, 1803 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:18:20,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 231 transitions, 2489 flow [2024-06-28 03:18:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 231 transitions, 2375 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:20,732 INFO L231 Difference]: Finished difference. Result has 190 places, 221 transitions, 1896 flow [2024-06-28 03:18:20,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1896, PETRI_PLACES=190, PETRI_TRANSITIONS=221} [2024-06-28 03:18:20,733 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 145 predicate places. [2024-06-28 03:18:20,733 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 221 transitions, 1896 flow [2024-06-28 03:18:20,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:20,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:20,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:20,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:18:20,734 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 03:18:20,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1663935548, now seen corresponding path program 3 times [2024-06-28 03:18:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420312333] [2024-06-28 03:18:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:20,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:21,692 INFO 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 03:18:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420312333] [2024-06-28 03:18:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420312333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:21,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:21,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621989855] [2024-06-28 03:18:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:21,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:21,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:21,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 221 transitions, 1896 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:21,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:21,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:21,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:22,381 INFO L124 PetriNetUnfolderBase]: 2216/3587 cut-off events. [2024-06-28 03:18:22,381 INFO L125 PetriNetUnfolderBase]: For 458275/458278 co-relation queries the response was YES. [2024-06-28 03:18:22,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32328 conditions, 3587 events. 2216/3587 cut-off events. For 458275/458278 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19888 event pairs, 586 based on Foata normal form. 3/3586 useless extension candidates. Maximal degree in co-relation 32237. Up to 3157 conditions per place. [2024-06-28 03:18:22,418 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 172 selfloop transitions, 28 changer transitions 0/230 dead transitions. [2024-06-28 03:18:22,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 230 transitions, 2318 flow [2024-06-28 03:18:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:18:22,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-28 03:18:22,419 INFO L175 Difference]: Start difference. First operand has 190 places, 221 transitions, 1896 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:18:22,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 230 transitions, 2318 flow [2024-06-28 03:18:22,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 230 transitions, 2196 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:22,723 INFO L231 Difference]: Finished difference. Result has 195 places, 221 transitions, 1836 flow [2024-06-28 03:18:22,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1836, PETRI_PLACES=195, PETRI_TRANSITIONS=221} [2024-06-28 03:18:22,723 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 150 predicate places. [2024-06-28 03:18:22,723 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 1836 flow [2024-06-28 03:18:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:22,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:22,724 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 03:18:22,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:18:22,724 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 03:18:22,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash 48382390, now seen corresponding path program 1 times [2024-06-28 03:18:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:22,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401988564] [2024-06-28 03:18:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:22,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:23,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401988564] [2024-06-28 03:18:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401988564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:23,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568567465] [2024-06-28 03:18:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:23,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:23,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:23,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:23,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 221 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:23,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:23,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:23,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:24,880 INFO L124 PetriNetUnfolderBase]: 2646/4154 cut-off events. [2024-06-28 03:18:24,880 INFO L125 PetriNetUnfolderBase]: For 634100/634100 co-relation queries the response was YES. [2024-06-28 03:18:24,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40137 conditions, 4154 events. 2646/4154 cut-off events. For 634100/634100 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22783 event pairs, 514 based on Foata normal form. 16/4167 useless extension candidates. Maximal degree in co-relation 40043. Up to 3409 conditions per place. [2024-06-28 03:18:24,923 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 234 selfloop transitions, 30 changer transitions 0/277 dead transitions. [2024-06-28 03:18:24,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 277 transitions, 2874 flow [2024-06-28 03:18:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 03:18:24,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731404958677686 [2024-06-28 03:18:24,925 INFO L175 Difference]: Start difference. First operand has 195 places, 221 transitions, 1836 flow. Second operand 11 states and 229 transitions. [2024-06-28 03:18:24,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 277 transitions, 2874 flow [2024-06-28 03:18:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 277 transitions, 2810 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:25,341 INFO L231 Difference]: Finished difference. Result has 200 places, 223 transitions, 1944 flow [2024-06-28 03:18:25,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1944, PETRI_PLACES=200, PETRI_TRANSITIONS=223} [2024-06-28 03:18:25,341 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 155 predicate places. [2024-06-28 03:18:25,341 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 223 transitions, 1944 flow [2024-06-28 03:18:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:25,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:25,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:18:25,342 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 03:18:25,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1490027416, now seen corresponding path program 2 times [2024-06-28 03:18:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966903065] [2024-06-28 03:18:25,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:26,462 INFO 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 03:18:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966903065] [2024-06-28 03:18:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966903065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:26,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:26,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484935851] [2024-06-28 03:18:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:26,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:26,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 223 transitions, 1944 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:26,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:26,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:26,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:27,528 INFO L124 PetriNetUnfolderBase]: 2696/4246 cut-off events. [2024-06-28 03:18:27,528 INFO L125 PetriNetUnfolderBase]: For 653551/653551 co-relation queries the response was YES. [2024-06-28 03:18:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40910 conditions, 4246 events. 2696/4246 cut-off events. For 653551/653551 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23465 event pairs, 711 based on Foata normal form. 20/4263 useless extension candidates. Maximal degree in co-relation 40815. Up to 3788 conditions per place. [2024-06-28 03:18:27,572 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 231 selfloop transitions, 22 changer transitions 0/266 dead transitions. [2024-06-28 03:18:27,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 266 transitions, 2646 flow [2024-06-28 03:18:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:18:27,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 03:18:27,573 INFO L175 Difference]: Start difference. First operand has 200 places, 223 transitions, 1944 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:18:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 266 transitions, 2646 flow [2024-06-28 03:18:28,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 266 transitions, 2558 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:28,038 INFO L231 Difference]: Finished difference. Result has 203 places, 224 transitions, 1963 flow [2024-06-28 03:18:28,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1963, PETRI_PLACES=203, PETRI_TRANSITIONS=224} [2024-06-28 03:18:28,039 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 158 predicate places. [2024-06-28 03:18:28,039 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 224 transitions, 1963 flow [2024-06-28 03:18:28,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:28,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:28,039 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 03:18:28,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:18:28,039 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 03:18:28,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1496462376, now seen corresponding path program 3 times [2024-06-28 03:18:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052838602] [2024-06-28 03:18:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:29,104 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 03:18:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052838602] [2024-06-28 03:18:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052838602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:29,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:29,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:29,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780796706] [2024-06-28 03:18:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:29,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:29,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 224 transitions, 1963 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:29,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:30,235 INFO L124 PetriNetUnfolderBase]: 2754/4354 cut-off events. [2024-06-28 03:18:30,235 INFO L125 PetriNetUnfolderBase]: For 667432/667432 co-relation queries the response was YES. [2024-06-28 03:18:30,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41425 conditions, 4354 events. 2754/4354 cut-off events. For 667432/667432 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24320 event pairs, 711 based on Foata normal form. 16/4367 useless extension candidates. Maximal degree in co-relation 41328. Up to 3776 conditions per place. [2024-06-28 03:18:30,282 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 234 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-06-28 03:18:30,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 271 transitions, 2687 flow [2024-06-28 03:18:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:18:30,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-28 03:18:30,283 INFO L175 Difference]: Start difference. First operand has 203 places, 224 transitions, 1963 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:18:30,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 271 transitions, 2687 flow [2024-06-28 03:18:30,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 271 transitions, 2622 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:30,728 INFO L231 Difference]: Finished difference. Result has 205 places, 225 transitions, 2002 flow [2024-06-28 03:18:30,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=205, PETRI_TRANSITIONS=225} [2024-06-28 03:18:30,729 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2024-06-28 03:18:30,729 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 225 transitions, 2002 flow [2024-06-28 03:18:30,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:30,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:30,729 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 03:18:30,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:18:30,729 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 03:18:30,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2112247342, now seen corresponding path program 4 times [2024-06-28 03:18:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:30,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848380483] [2024-06-28 03:18:30,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:30,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848380483] [2024-06-28 03:18:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848380483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:31,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:31,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490768681] [2024-06-28 03:18:31,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:31,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:31,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:31,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:31,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 225 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:31,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:31,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:32,974 INFO L124 PetriNetUnfolderBase]: 2726/4310 cut-off events. [2024-06-28 03:18:32,974 INFO L125 PetriNetUnfolderBase]: For 654053/654053 co-relation queries the response was YES. [2024-06-28 03:18:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40280 conditions, 4310 events. 2726/4310 cut-off events. For 654053/654053 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24015 event pairs, 686 based on Foata normal form. 16/4323 useless extension candidates. Maximal degree in co-relation 40182. Up to 3599 conditions per place. [2024-06-28 03:18:33,012 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 232 selfloop transitions, 27 changer transitions 0/272 dead transitions. [2024-06-28 03:18:33,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 272 transitions, 2682 flow [2024-06-28 03:18:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 03:18:33,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-28 03:18:33,013 INFO L175 Difference]: Start difference. First operand has 205 places, 225 transitions, 2002 flow. Second operand 10 states and 208 transitions. [2024-06-28 03:18:33,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 272 transitions, 2682 flow [2024-06-28 03:18:33,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 272 transitions, 2582 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:33,447 INFO L231 Difference]: Finished difference. Result has 207 places, 225 transitions, 1962 flow [2024-06-28 03:18:33,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1962, PETRI_PLACES=207, PETRI_TRANSITIONS=225} [2024-06-28 03:18:33,448 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 162 predicate places. [2024-06-28 03:18:33,448 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 225 transitions, 1962 flow [2024-06-28 03:18:33,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:33,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:33,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:33,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:18:33,448 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:33,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1242673616, now seen corresponding path program 5 times [2024-06-28 03:18:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:33,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478705439] [2024-06-28 03:18:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478705439] [2024-06-28 03:18:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478705439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724188052] [2024-06-28 03:18:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:34,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:34,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:34,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 225 transitions, 1962 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:34,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:34,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:35,831 INFO L124 PetriNetUnfolderBase]: 2801/4444 cut-off events. [2024-06-28 03:18:35,831 INFO L125 PetriNetUnfolderBase]: For 678510/678513 co-relation queries the response was YES. [2024-06-28 03:18:35,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41121 conditions, 4444 events. 2801/4444 cut-off events. For 678510/678513 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25115 event pairs, 681 based on Foata normal form. 20/4460 useless extension candidates. Maximal degree in co-relation 41022. Up to 3564 conditions per place. [2024-06-28 03:18:35,875 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 169 selfloop transitions, 86 changer transitions 0/268 dead transitions. [2024-06-28 03:18:35,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 268 transitions, 2670 flow [2024-06-28 03:18:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-28 03:18:35,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 03:18:35,877 INFO L175 Difference]: Start difference. First operand has 207 places, 225 transitions, 1962 flow. Second operand 10 states and 215 transitions. [2024-06-28 03:18:35,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 268 transitions, 2670 flow [2024-06-28 03:18:36,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 268 transitions, 2585 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:36,355 INFO L231 Difference]: Finished difference. Result has 208 places, 226 transitions, 2112 flow [2024-06-28 03:18:36,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2112, PETRI_PLACES=208, PETRI_TRANSITIONS=226} [2024-06-28 03:18:36,355 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 163 predicate places. [2024-06-28 03:18:36,356 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 226 transitions, 2112 flow [2024-06-28 03:18:36,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:36,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:36,356 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 03:18:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:18:36,356 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:36,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1238027336, now seen corresponding path program 6 times [2024-06-28 03:18:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:36,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380067648] [2024-06-28 03:18:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:37,389 INFO 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 03:18:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380067648] [2024-06-28 03:18:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380067648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:37,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244737071] [2024-06-28 03:18:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:37,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:37,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 226 transitions, 2112 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:37,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:37,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:37,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:38,648 INFO L124 PetriNetUnfolderBase]: 2859/4557 cut-off events. [2024-06-28 03:18:38,648 INFO L125 PetriNetUnfolderBase]: For 694268/694271 co-relation queries the response was YES. [2024-06-28 03:18:38,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42214 conditions, 4557 events. 2859/4557 cut-off events. For 694268/694271 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 26064 event pairs, 686 based on Foata normal form. 16/4569 useless extension candidates. Maximal degree in co-relation 42114. Up to 3552 conditions per place. [2024-06-28 03:18:38,695 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 172 selfloop transitions, 88 changer transitions 0/273 dead transitions. [2024-06-28 03:18:38,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 273 transitions, 2850 flow [2024-06-28 03:18:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-06-28 03:18:38,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49772727272727274 [2024-06-28 03:18:38,696 INFO L175 Difference]: Start difference. First operand has 208 places, 226 transitions, 2112 flow. Second operand 10 states and 219 transitions. [2024-06-28 03:18:38,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 273 transitions, 2850 flow [2024-06-28 03:18:39,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 273 transitions, 2647 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:39,201 INFO L231 Difference]: Finished difference. Result has 210 places, 227 transitions, 2149 flow [2024-06-28 03:18:39,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2149, PETRI_PLACES=210, PETRI_TRANSITIONS=227} [2024-06-28 03:18:39,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 165 predicate places. [2024-06-28 03:18:39,201 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 227 transitions, 2149 flow [2024-06-28 03:18:39,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:39,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:39,202 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 03:18:39,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:18:39,202 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:39,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1919585624, now seen corresponding path program 7 times [2024-06-28 03:18:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:39,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558269184] [2024-06-28 03:18:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:40,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558269184] [2024-06-28 03:18:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558269184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:40,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:40,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:40,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113335143] [2024-06-28 03:18:40,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:40,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:40,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:40,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:40,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:40,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 227 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:40,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:40,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:40,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:41,409 INFO L124 PetriNetUnfolderBase]: 3028/4846 cut-off events. [2024-06-28 03:18:41,409 INFO L125 PetriNetUnfolderBase]: For 762976/762979 co-relation queries the response was YES. [2024-06-28 03:18:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45651 conditions, 4846 events. 3028/4846 cut-off events. For 762976/762979 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28344 event pairs, 733 based on Foata normal form. 16/4858 useless extension candidates. Maximal degree in co-relation 45550. Up to 3489 conditions per place. [2024-06-28 03:18:41,462 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 171 selfloop transitions, 93 changer transitions 0/277 dead transitions. [2024-06-28 03:18:41,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 277 transitions, 3209 flow [2024-06-28 03:18:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-28 03:18:41,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:18:41,463 INFO L175 Difference]: Start difference. First operand has 210 places, 227 transitions, 2149 flow. Second operand 10 states and 220 transitions. [2024-06-28 03:18:41,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 277 transitions, 3209 flow [2024-06-28 03:18:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 277 transitions, 2989 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:42,054 INFO L231 Difference]: Finished difference. Result has 212 places, 229 transitions, 2239 flow [2024-06-28 03:18:42,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2239, PETRI_PLACES=212, PETRI_TRANSITIONS=229} [2024-06-28 03:18:42,054 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 167 predicate places. [2024-06-28 03:18:42,055 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 229 transitions, 2239 flow [2024-06-28 03:18:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:42,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:42,055 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 03:18:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:18:42,055 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 03:18:42,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2096837114, now seen corresponding path program 8 times [2024-06-28 03:18:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:42,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584349256] [2024-06-28 03:18:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:42,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584349256] [2024-06-28 03:18:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584349256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269842166] [2024-06-28 03:18:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:43,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:43,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 229 transitions, 2239 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:43,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:43,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:43,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:44,568 INFO L124 PetriNetUnfolderBase]: 3103/4961 cut-off events. [2024-06-28 03:18:44,568 INFO L125 PetriNetUnfolderBase]: For 796188/796191 co-relation queries the response was YES. [2024-06-28 03:18:44,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46687 conditions, 4961 events. 3103/4961 cut-off events. For 796188/796191 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29167 event pairs, 754 based on Foata normal form. 20/4977 useless extension candidates. Maximal degree in co-relation 46585. Up to 4066 conditions per place. [2024-06-28 03:18:44,617 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 169 selfloop transitions, 89 changer transitions 0/271 dead transitions. [2024-06-28 03:18:44,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 271 transitions, 2955 flow [2024-06-28 03:18:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-28 03:18:44,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-28 03:18:44,618 INFO L175 Difference]: Start difference. First operand has 212 places, 229 transitions, 2239 flow. Second operand 10 states and 212 transitions. [2024-06-28 03:18:44,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 271 transitions, 2955 flow [2024-06-28 03:18:45,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 271 transitions, 2785 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:45,298 INFO L231 Difference]: Finished difference. Result has 216 places, 230 transitions, 2316 flow [2024-06-28 03:18:45,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2316, PETRI_PLACES=216, PETRI_TRANSITIONS=230} [2024-06-28 03:18:45,300 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 171 predicate places. [2024-06-28 03:18:45,300 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 230 transitions, 2316 flow [2024-06-28 03:18:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:45,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:45,301 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 03:18:45,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:18:45,301 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:45,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2090581004, now seen corresponding path program 9 times [2024-06-28 03:18:45,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:45,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253476811] [2024-06-28 03:18:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:45,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:46,340 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 03:18:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253476811] [2024-06-28 03:18:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253476811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:46,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197424651] [2024-06-28 03:18:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:46,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:46,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 230 transitions, 2316 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:46,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:46,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:46,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:47,806 INFO L124 PetriNetUnfolderBase]: 3153/5057 cut-off events. [2024-06-28 03:18:47,806 INFO L125 PetriNetUnfolderBase]: For 800737/800740 co-relation queries the response was YES. [2024-06-28 03:18:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46974 conditions, 5057 events. 3153/5057 cut-off events. For 800737/800740 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29917 event pairs, 776 based on Foata normal form. 20/5073 useless extension candidates. Maximal degree in co-relation 46870. Up to 4152 conditions per place. [2024-06-28 03:18:47,859 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 173 selfloop transitions, 87 changer transitions 0/273 dead transitions. [2024-06-28 03:18:47,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 273 transitions, 3030 flow [2024-06-28 03:18:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 03:18:47,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 03:18:47,861 INFO L175 Difference]: Start difference. First operand has 216 places, 230 transitions, 2316 flow. Second operand 10 states and 214 transitions. [2024-06-28 03:18:47,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 273 transitions, 3030 flow [2024-06-28 03:18:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 273 transitions, 2829 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:48,454 INFO L231 Difference]: Finished difference. Result has 218 places, 231 transitions, 2348 flow [2024-06-28 03:18:48,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=218, PETRI_TRANSITIONS=231} [2024-06-28 03:18:48,454 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 173 predicate places. [2024-06-28 03:18:48,454 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 231 transitions, 2348 flow [2024-06-28 03:18:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:48,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:48,455 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 03:18:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:18:48,455 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:48,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1655488920, now seen corresponding path program 10 times [2024-06-28 03:18:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248777580] [2024-06-28 03:18:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:49,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248777580] [2024-06-28 03:18:49,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248777580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:49,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:49,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492043832] [2024-06-28 03:18:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:49,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:49,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:49,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:49,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 231 transitions, 2348 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:49,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:49,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:49,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:50,823 INFO L124 PetriNetUnfolderBase]: 3125/5018 cut-off events. [2024-06-28 03:18:50,823 INFO L125 PetriNetUnfolderBase]: For 773991/773994 co-relation queries the response was YES. [2024-06-28 03:18:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45679 conditions, 5018 events. 3125/5018 cut-off events. For 773991/773994 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29669 event pairs, 741 based on Foata normal form. 16/5030 useless extension candidates. Maximal degree in co-relation 45574. Up to 3878 conditions per place. [2024-06-28 03:18:50,877 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 173 selfloop transitions, 90 changer transitions 0/276 dead transitions. [2024-06-28 03:18:50,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 276 transitions, 3032 flow [2024-06-28 03:18:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-28 03:18:50,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-06-28 03:18:50,878 INFO L175 Difference]: Start difference. First operand has 218 places, 231 transitions, 2348 flow. Second operand 10 states and 216 transitions. [2024-06-28 03:18:50,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 276 transitions, 3032 flow [2024-06-28 03:18:51,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 276 transitions, 2817 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:51,605 INFO L231 Difference]: Finished difference. Result has 220 places, 231 transitions, 2319 flow [2024-06-28 03:18:51,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2319, PETRI_PLACES=220, PETRI_TRANSITIONS=231} [2024-06-28 03:18:51,606 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-28 03:18:51,606 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 231 transitions, 2319 flow [2024-06-28 03:18:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:51,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:51,606 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 03:18:51,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:18:51,606 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 03:18:51,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:51,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1368410789, now seen corresponding path program 1 times [2024-06-28 03:18:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:51,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421444518] [2024-06-28 03:18:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:51,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:52,524 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 03:18:52,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:52,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421444518] [2024-06-28 03:18:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421444518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772231480] [2024-06-28 03:18:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:52,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:52,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:52,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:52,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:52,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 231 transitions, 2319 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:52,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:52,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:53,542 INFO L124 PetriNetUnfolderBase]: 2965/4844 cut-off events. [2024-06-28 03:18:53,542 INFO L125 PetriNetUnfolderBase]: For 749457/749460 co-relation queries the response was YES. [2024-06-28 03:18:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44484 conditions, 4844 events. 2965/4844 cut-off events. For 749457/749460 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29343 event pairs, 820 based on Foata normal form. 3/4804 useless extension candidates. Maximal degree in co-relation 44378. Up to 4313 conditions per place. [2024-06-28 03:18:53,589 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 194 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-28 03:18:53,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 258 transitions, 2937 flow [2024-06-28 03:18:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:18:53,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:18:53,590 INFO L175 Difference]: Start difference. First operand has 220 places, 231 transitions, 2319 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:18:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 258 transitions, 2937 flow [2024-06-28 03:18:54,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 258 transitions, 2709 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:54,058 INFO L231 Difference]: Finished difference. Result has 221 places, 242 transitions, 2307 flow [2024-06-28 03:18:54,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2307, PETRI_PLACES=221, PETRI_TRANSITIONS=242} [2024-06-28 03:18:54,059 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 176 predicate places. [2024-06-28 03:18:54,059 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 242 transitions, 2307 flow [2024-06-28 03:18:54,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:54,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:54,059 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 03:18:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:18:54,059 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 03:18:54,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1360792229, now seen corresponding path program 2 times [2024-06-28 03:18:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:54,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016331916] [2024-06-28 03:18:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:54,948 INFO 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 03:18:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016331916] [2024-06-28 03:18:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016331916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:18:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253350571] [2024-06-28 03:18:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:54,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:18:54,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:18:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:18:55,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:18:55,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 242 transitions, 2307 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:55,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:55,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:18:55,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:55,876 INFO L124 PetriNetUnfolderBase]: 2976/4857 cut-off events. [2024-06-28 03:18:55,876 INFO L125 PetriNetUnfolderBase]: For 766907/766910 co-relation queries the response was YES. [2024-06-28 03:18:55,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44709 conditions, 4857 events. 2976/4857 cut-off events. For 766907/766910 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29370 event pairs, 814 based on Foata normal form. 3/4820 useless extension candidates. Maximal degree in co-relation 44600. Up to 4317 conditions per place. [2024-06-28 03:18:55,932 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 195 selfloop transitions, 33 changer transitions 0/265 dead transitions. [2024-06-28 03:18:55,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 265 transitions, 3076 flow [2024-06-28 03:18:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:18:55,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-28 03:18:55,934 INFO L175 Difference]: Start difference. First operand has 221 places, 242 transitions, 2307 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:18:55,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 265 transitions, 3076 flow [2024-06-28 03:18:56,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 265 transitions, 3008 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:56,572 INFO L231 Difference]: Finished difference. Result has 227 places, 250 transitions, 2457 flow [2024-06-28 03:18:56,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2457, PETRI_PLACES=227, PETRI_TRANSITIONS=250} [2024-06-28 03:18:56,572 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-28 03:18:56,572 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 250 transitions, 2457 flow [2024-06-28 03:18:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:56,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:56,573 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 03:18:56,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:18:56,573 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:56,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:56,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2097083378, now seen corresponding path program 1 times [2024-06-28 03:18:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213937861] [2024-06-28 03:18:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:57,777 INFO 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 03:18:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213937861] [2024-06-28 03:18:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213937861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:57,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200839249] [2024-06-28 03:18:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:57,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:57,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 250 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:57,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:57,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:57,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:59,166 INFO L124 PetriNetUnfolderBase]: 3184/5104 cut-off events. [2024-06-28 03:18:59,167 INFO L125 PetriNetUnfolderBase]: For 802387/802390 co-relation queries the response was YES. [2024-06-28 03:18:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46972 conditions, 5104 events. 3184/5104 cut-off events. For 802387/802390 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 30098 event pairs, 796 based on Foata normal form. 4/5104 useless extension candidates. Maximal degree in co-relation 46860. Up to 4576 conditions per place. [2024-06-28 03:18:59,226 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 223 selfloop transitions, 53 changer transitions 0/289 dead transitions. [2024-06-28 03:18:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 289 transitions, 3187 flow [2024-06-28 03:18:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:18:59,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-28 03:18:59,227 INFO L175 Difference]: Start difference. First operand has 227 places, 250 transitions, 2457 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:18:59,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 289 transitions, 3187 flow [2024-06-28 03:18:59,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 289 transitions, 3097 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:59,801 INFO L231 Difference]: Finished difference. Result has 235 places, 255 transitions, 2580 flow [2024-06-28 03:18:59,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2580, PETRI_PLACES=235, PETRI_TRANSITIONS=255} [2024-06-28 03:18:59,801 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 190 predicate places. [2024-06-28 03:18:59,802 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 255 transitions, 2580 flow [2024-06-28 03:18:59,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:59,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:59,802 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 03:18:59,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:18:59,802 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 03:18:59,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1360782309, now seen corresponding path program 1 times [2024-06-28 03:18:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:59,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668628951] [2024-06-28 03:18:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:59,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:00,823 INFO 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 03:19:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668628951] [2024-06-28 03:19:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668628951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134255641] [2024-06-28 03:19:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:00,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:19:00,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 255 transitions, 2580 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:00,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:00,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:19:00,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:01,950 INFO L124 PetriNetUnfolderBase]: 2922/4795 cut-off events. [2024-06-28 03:19:01,950 INFO L125 PetriNetUnfolderBase]: For 811372/811388 co-relation queries the response was YES. [2024-06-28 03:19:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45810 conditions, 4795 events. 2922/4795 cut-off events. For 811372/811388 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29170 event pairs, 779 based on Foata normal form. 5/4737 useless extension candidates. Maximal degree in co-relation 45695. Up to 4227 conditions per place. [2024-06-28 03:19:02,004 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 202 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2024-06-28 03:19:02,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 274 transitions, 3122 flow [2024-06-28 03:19:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:19:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:19:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:19:02,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:19:02,005 INFO L175 Difference]: Start difference. First operand has 235 places, 255 transitions, 2580 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:19:02,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 274 transitions, 3122 flow [2024-06-28 03:19:02,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 274 transitions, 2951 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:02,633 INFO L231 Difference]: Finished difference. Result has 236 places, 258 transitions, 2517 flow [2024-06-28 03:19:02,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2517, PETRI_PLACES=236, PETRI_TRANSITIONS=258} [2024-06-28 03:19:02,633 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 191 predicate places. [2024-06-28 03:19:02,633 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 258 transitions, 2517 flow [2024-06-28 03:19:02,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:02,633 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 03:19:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:19:02,634 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:02,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 61347636, now seen corresponding path program 11 times [2024-06-28 03:19:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719478038] [2024-06-28 03:19:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:03,691 INFO 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 03:19:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719478038] [2024-06-28 03:19:03,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719478038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:03,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:03,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727009229] [2024-06-28 03:19:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:03,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:03,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:03,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 258 transitions, 2517 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:05,164 INFO L124 PetriNetUnfolderBase]: 3267/5243 cut-off events. [2024-06-28 03:19:05,164 INFO L125 PetriNetUnfolderBase]: For 884905/884909 co-relation queries the response was YES. [2024-06-28 03:19:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49316 conditions, 5243 events. 3267/5243 cut-off events. For 884905/884909 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31054 event pairs, 755 based on Foata normal form. 20/5251 useless extension candidates. Maximal degree in co-relation 49200. Up to 4302 conditions per place. [2024-06-28 03:19:05,225 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 185 selfloop transitions, 100 changer transitions 0/298 dead transitions. [2024-06-28 03:19:05,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 298 transitions, 3293 flow [2024-06-28 03:19:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:19:05,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-28 03:19:05,226 INFO L175 Difference]: Start difference. First operand has 236 places, 258 transitions, 2517 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:19:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 298 transitions, 3293 flow [2024-06-28 03:19:05,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 298 transitions, 3207 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:05,927 INFO L231 Difference]: Finished difference. Result has 240 places, 259 transitions, 2702 flow [2024-06-28 03:19:05,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2702, PETRI_PLACES=240, PETRI_TRANSITIONS=259} [2024-06-28 03:19:05,928 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 195 predicate places. [2024-06-28 03:19:05,928 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 259 transitions, 2702 flow [2024-06-28 03:19:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:05,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:05,928 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 03:19:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:19:05,928 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:05,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 24365930, now seen corresponding path program 12 times [2024-06-28 03:19:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14009343] [2024-06-28 03:19:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:06,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14009343] [2024-06-28 03:19:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14009343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315412670] [2024-06-28 03:19:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:07,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:07,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 259 transitions, 2702 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:07,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:07,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:08,532 INFO L124 PetriNetUnfolderBase]: 3342/5383 cut-off events. [2024-06-28 03:19:08,532 INFO L125 PetriNetUnfolderBase]: For 917634/917638 co-relation queries the response was YES. [2024-06-28 03:19:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51060 conditions, 5383 events. 3342/5383 cut-off events. For 917634/917638 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32241 event pairs, 774 based on Foata normal form. 20/5391 useless extension candidates. Maximal degree in co-relation 50943. Up to 4427 conditions per place. [2024-06-28 03:19:08,598 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 193 selfloop transitions, 94 changer transitions 0/300 dead transitions. [2024-06-28 03:19:08,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 300 transitions, 3490 flow [2024-06-28 03:19:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 03:19:08,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-28 03:19:08,599 INFO L175 Difference]: Start difference. First operand has 240 places, 259 transitions, 2702 flow. Second operand 10 states and 208 transitions. [2024-06-28 03:19:08,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 300 transitions, 3490 flow [2024-06-28 03:19:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 300 transitions, 3251 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:09,665 INFO L231 Difference]: Finished difference. Result has 242 places, 260 transitions, 2724 flow [2024-06-28 03:19:09,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=242, PETRI_TRANSITIONS=260} [2024-06-28 03:19:09,665 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-06-28 03:19:09,665 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 260 transitions, 2724 flow [2024-06-28 03:19:09,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:09,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:09,666 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 03:19:09,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:19:09,666 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:09,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash 24188300, now seen corresponding path program 13 times [2024-06-28 03:19:09,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:09,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021489759] [2024-06-28 03:19:09,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:09,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021489759] [2024-06-28 03:19:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021489759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227706004] [2024-06-28 03:19:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:10,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:10,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:10,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 260 transitions, 2724 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:10,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:10,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:10,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:12,277 INFO L124 PetriNetUnfolderBase]: 3511/5662 cut-off events. [2024-06-28 03:19:12,278 INFO L125 PetriNetUnfolderBase]: For 993105/993109 co-relation queries the response was YES. [2024-06-28 03:19:12,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54754 conditions, 5662 events. 3511/5662 cut-off events. For 993105/993109 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 34376 event pairs, 788 based on Foata normal form. 16/5666 useless extension candidates. Maximal degree in co-relation 54636. Up to 4310 conditions per place. [2024-06-28 03:19:12,344 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 196 selfloop transitions, 98 changer transitions 0/307 dead transitions. [2024-06-28 03:19:12,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 307 transitions, 3898 flow [2024-06-28 03:19:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-28 03:19:12,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-28 03:19:12,345 INFO L175 Difference]: Start difference. First operand has 242 places, 260 transitions, 2724 flow. Second operand 10 states and 212 transitions. [2024-06-28 03:19:12,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 307 transitions, 3898 flow [2024-06-28 03:19:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 307 transitions, 3669 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:13,310 INFO L231 Difference]: Finished difference. Result has 244 places, 262 transitions, 2831 flow [2024-06-28 03:19:13,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2831, PETRI_PLACES=244, PETRI_TRANSITIONS=262} [2024-06-28 03:19:13,311 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 199 predicate places. [2024-06-28 03:19:13,311 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 262 transitions, 2831 flow [2024-06-28 03:19:13,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:13,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:13,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:13,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:19:13,312 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:13,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash 30622040, now seen corresponding path program 14 times [2024-06-28 03:19:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878791485] [2024-06-28 03:19:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:13,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878791485] [2024-06-28 03:19:14,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878791485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:14,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:14,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185038257] [2024-06-28 03:19:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:14,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:14,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:14,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 262 transitions, 2831 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:14,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:14,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:14,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:15,904 INFO L124 PetriNetUnfolderBase]: 3475/5601 cut-off events. [2024-06-28 03:19:15,904 INFO L125 PetriNetUnfolderBase]: For 965941/965945 co-relation queries the response was YES. [2024-06-28 03:19:15,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52767 conditions, 5601 events. 3475/5601 cut-off events. For 965941/965945 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33953 event pairs, 790 based on Foata normal form. 20/5609 useless extension candidates. Maximal degree in co-relation 52648. Up to 4650 conditions per place. [2024-06-28 03:19:15,966 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 196 selfloop transitions, 93 changer transitions 0/302 dead transitions. [2024-06-28 03:19:15,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 302 transitions, 3559 flow [2024-06-28 03:19:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 03:19:15,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:19:15,967 INFO L175 Difference]: Start difference. First operand has 244 places, 262 transitions, 2831 flow. Second operand 10 states and 209 transitions. [2024-06-28 03:19:15,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 302 transitions, 3559 flow [2024-06-28 03:19:16,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 302 transitions, 3355 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:16,809 INFO L231 Difference]: Finished difference. Result has 248 places, 262 transitions, 2820 flow [2024-06-28 03:19:16,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2820, PETRI_PLACES=248, PETRI_TRANSITIONS=262} [2024-06-28 03:19:16,810 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2024-06-28 03:19:16,810 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 262 transitions, 2820 flow [2024-06-28 03:19:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:16,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:16,810 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 03:19:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:19:16,810 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:16,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash 54692876, now seen corresponding path program 15 times [2024-06-28 03:19:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:16,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713562352] [2024-06-28 03:19:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:17,847 INFO 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 03:19:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713562352] [2024-06-28 03:19:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713562352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888544677] [2024-06-28 03:19:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:17,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:17,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 262 transitions, 2820 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:17,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:17,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:19,405 INFO L124 PetriNetUnfolderBase]: 3550/5736 cut-off events. [2024-06-28 03:19:19,405 INFO L125 PetriNetUnfolderBase]: For 983180/983184 co-relation queries the response was YES. [2024-06-28 03:19:19,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53685 conditions, 5736 events. 3550/5736 cut-off events. For 983180/983184 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 35115 event pairs, 814 based on Foata normal form. 20/5744 useless extension candidates. Maximal degree in co-relation 53564. Up to 4775 conditions per place. [2024-06-28 03:19:19,476 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 202 selfloop transitions, 89 changer transitions 0/304 dead transitions. [2024-06-28 03:19:19,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 304 transitions, 3626 flow [2024-06-28 03:19:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-28 03:19:19,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-28 03:19:19,477 INFO L175 Difference]: Start difference. First operand has 248 places, 262 transitions, 2820 flow. Second operand 10 states and 212 transitions. [2024-06-28 03:19:19,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 304 transitions, 3626 flow [2024-06-28 03:19:20,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 304 transitions, 3423 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:20,394 INFO L231 Difference]: Finished difference. Result has 249 places, 263 transitions, 2872 flow [2024-06-28 03:19:20,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2872, PETRI_PLACES=249, PETRI_TRANSITIONS=263} [2024-06-28 03:19:20,394 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 204 predicate places. [2024-06-28 03:19:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 263 transitions, 2872 flow [2024-06-28 03:19:20,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:20,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:20,395 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 03:19:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:19:20,395 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -111718534, now seen corresponding path program 16 times [2024-06-28 03:19:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750965643] [2024-06-28 03:19:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:21,428 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 03:19:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750965643] [2024-06-28 03:19:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750965643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:21,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:21,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:21,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535804542] [2024-06-28 03:19:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:21,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:21,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:21,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 263 transitions, 2872 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:21,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:21,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:22,947 INFO L124 PetriNetUnfolderBase]: 3719/6030 cut-off events. [2024-06-28 03:19:22,948 INFO L125 PetriNetUnfolderBase]: For 1072135/1072139 co-relation queries the response was YES. [2024-06-28 03:19:22,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57841 conditions, 6030 events. 3719/6030 cut-off events. For 1072135/1072139 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 37508 event pairs, 837 based on Foata normal form. 16/6034 useless extension candidates. Maximal degree in co-relation 57719. Up to 4898 conditions per place. [2024-06-28 03:19:23,023 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 204 selfloop transitions, 94 changer transitions 0/311 dead transitions. [2024-06-28 03:19:23,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 311 transitions, 4080 flow [2024-06-28 03:19:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-28 03:19:23,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 03:19:23,024 INFO L175 Difference]: Start difference. First operand has 249 places, 263 transitions, 2872 flow. Second operand 10 states and 215 transitions. [2024-06-28 03:19:23,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 311 transitions, 4080 flow [2024-06-28 03:19:24,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 311 transitions, 3857 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:24,134 INFO L231 Difference]: Finished difference. Result has 251 places, 265 transitions, 2985 flow [2024-06-28 03:19:24,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2985, PETRI_PLACES=251, PETRI_TRANSITIONS=265} [2024-06-28 03:19:24,134 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 206 predicate places. [2024-06-28 03:19:24,134 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 265 transitions, 2985 flow [2024-06-28 03:19:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:24,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:24,134 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 03:19:24,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:19:24,135 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:24,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:24,135 INFO L85 PathProgramCache]: Analyzing trace with hash 54515246, now seen corresponding path program 17 times [2024-06-28 03:19:24,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:24,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076653973] [2024-06-28 03:19:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076653973] [2024-06-28 03:19:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076653973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220330322] [2024-06-28 03:19:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:25,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:25,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 265 transitions, 2985 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:25,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:25,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:25,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:26,914 INFO L124 PetriNetUnfolderBase]: 3888/6319 cut-off events. [2024-06-28 03:19:26,915 INFO L125 PetriNetUnfolderBase]: For 1168732/1168736 co-relation queries the response was YES. [2024-06-28 03:19:26,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61804 conditions, 6319 events. 3888/6319 cut-off events. For 1168732/1168736 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39820 event pairs, 895 based on Foata normal form. 16/6323 useless extension candidates. Maximal degree in co-relation 61681. Up to 5057 conditions per place. [2024-06-28 03:19:26,994 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 208 selfloop transitions, 92 changer transitions 0/313 dead transitions. [2024-06-28 03:19:26,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 313 transitions, 4205 flow [2024-06-28 03:19:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-28 03:19:26,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-06-28 03:19:26,996 INFO L175 Difference]: Start difference. First operand has 251 places, 265 transitions, 2985 flow. Second operand 10 states and 216 transitions. [2024-06-28 03:19:26,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 313 transitions, 4205 flow [2024-06-28 03:19:28,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 313 transitions, 4023 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:28,113 INFO L231 Difference]: Finished difference. Result has 255 places, 267 transitions, 3139 flow [2024-06-28 03:19:28,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3139, PETRI_PLACES=255, PETRI_TRANSITIONS=267} [2024-06-28 03:19:28,113 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 210 predicate places. [2024-06-28 03:19:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 267 transitions, 3139 flow [2024-06-28 03:19:28,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:28,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:28,113 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 03:19:28,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:19:28,114 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:28,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:28,114 INFO L85 PathProgramCache]: Analyzing trace with hash -111540904, now seen corresponding path program 18 times [2024-06-28 03:19:28,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:28,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788361572] [2024-06-28 03:19:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:28,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788361572] [2024-06-28 03:19:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788361572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625230930] [2024-06-28 03:19:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:29,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:29,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 267 transitions, 3139 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:29,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:29,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:29,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:30,849 INFO L124 PetriNetUnfolderBase]: 3852/6258 cut-off events. [2024-06-28 03:19:30,850 INFO L125 PetriNetUnfolderBase]: For 1134809/1134813 co-relation queries the response was YES. [2024-06-28 03:19:30,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59833 conditions, 6258 events. 3852/6258 cut-off events. For 1134809/1134813 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 39347 event pairs, 887 based on Foata normal form. 20/6266 useless extension candidates. Maximal degree in co-relation 59708. Up to 5277 conditions per place. [2024-06-28 03:19:30,923 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 202 selfloop transitions, 92 changer transitions 0/307 dead transitions. [2024-06-28 03:19:30,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 307 transitions, 3877 flow [2024-06-28 03:19:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 03:19:30,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:19:30,924 INFO L175 Difference]: Start difference. First operand has 255 places, 267 transitions, 3139 flow. Second operand 10 states and 209 transitions. [2024-06-28 03:19:30,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 307 transitions, 3877 flow [2024-06-28 03:19:32,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 307 transitions, 3667 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:32,295 INFO L231 Difference]: Finished difference. Result has 259 places, 267 transitions, 3120 flow [2024-06-28 03:19:32,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3120, PETRI_PLACES=259, PETRI_TRANSITIONS=267} [2024-06-28 03:19:32,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 214 predicate places. [2024-06-28 03:19:32,296 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 267 transitions, 3120 flow [2024-06-28 03:19:32,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:32,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:32,296 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 03:19:32,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:19:32,296 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:32,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -116302504, now seen corresponding path program 19 times [2024-06-28 03:19:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802532830] [2024-06-28 03:19:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:33,310 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 03:19:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:33,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802532830] [2024-06-28 03:19:33,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802532830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:33,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:33,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:33,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703252507] [2024-06-28 03:19:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:33,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:33,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:33,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 267 transitions, 3120 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:33,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:34,815 INFO L124 PetriNetUnfolderBase]: 3860/6283 cut-off events. [2024-06-28 03:19:34,815 INFO L125 PetriNetUnfolderBase]: For 1106536/1106540 co-relation queries the response was YES. [2024-06-28 03:19:34,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59001 conditions, 6283 events. 3860/6283 cut-off events. For 1106536/1106540 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 39543 event pairs, 864 based on Foata normal form. 16/6287 useless extension candidates. Maximal degree in co-relation 58874. Up to 4188 conditions per place. [2024-06-28 03:19:34,889 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 195 selfloop transitions, 106 changer transitions 0/314 dead transitions. [2024-06-28 03:19:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 314 transitions, 4276 flow [2024-06-28 03:19:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 03:19:34,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 03:19:34,891 INFO L175 Difference]: Start difference. First operand has 259 places, 267 transitions, 3120 flow. Second operand 10 states and 214 transitions. [2024-06-28 03:19:34,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 314 transitions, 4276 flow [2024-06-28 03:19:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 314 transitions, 4085 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:36,004 INFO L231 Difference]: Finished difference. Result has 260 places, 268 transitions, 3223 flow [2024-06-28 03:19:36,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3223, PETRI_PLACES=260, PETRI_TRANSITIONS=268} [2024-06-28 03:19:36,004 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-28 03:19:36,004 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 268 transitions, 3223 flow [2024-06-28 03:19:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:36,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:36,005 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 03:19:36,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:19:36,005 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:36,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 60948986, now seen corresponding path program 20 times [2024-06-28 03:19:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146017287] [2024-06-28 03:19:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:37,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146017287] [2024-06-28 03:19:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146017287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:37,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913755481] [2024-06-28 03:19:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:37,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:37,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:37,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 268 transitions, 3223 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:37,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:37,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:37,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:38,648 INFO L124 PetriNetUnfolderBase]: 3824/6222 cut-off events. [2024-06-28 03:19:38,648 INFO L125 PetriNetUnfolderBase]: For 1082414/1082418 co-relation queries the response was YES. [2024-06-28 03:19:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57433 conditions, 6222 events. 3824/6222 cut-off events. For 1082414/1082418 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39116 event pairs, 876 based on Foata normal form. 20/6230 useless extension candidates. Maximal degree in co-relation 57305. Up to 5241 conditions per place. [2024-06-28 03:19:38,722 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 205 selfloop transitions, 90 changer transitions 0/308 dead transitions. [2024-06-28 03:19:38,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 308 transitions, 3963 flow [2024-06-28 03:19:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-28 03:19:38,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:19:38,723 INFO L175 Difference]: Start difference. First operand has 260 places, 268 transitions, 3223 flow. Second operand 10 states and 210 transitions. [2024-06-28 03:19:38,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 308 transitions, 3963 flow [2024-06-28 03:19:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 308 transitions, 3659 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:39,784 INFO L231 Difference]: Finished difference. Result has 262 places, 268 transitions, 3106 flow [2024-06-28 03:19:39,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3106, PETRI_PLACES=262, PETRI_TRANSITIONS=268} [2024-06-28 03:19:39,785 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-28 03:19:39,785 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 268 transitions, 3106 flow [2024-06-28 03:19:39,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:39,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:39,785 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 03:19:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:19:39,786 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 03:19:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1277212377, now seen corresponding path program 3 times [2024-06-28 03:19:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524271796] [2024-06-28 03:19:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524271796] [2024-06-28 03:19:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524271796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:40,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:19:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879789818] [2024-06-28 03:19:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:19:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:19:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:19:40,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:19:40,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 268 transitions, 3106 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:40,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:40,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:19:40,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:41,761 INFO L124 PetriNetUnfolderBase]: 3614/5971 cut-off events. [2024-06-28 03:19:41,761 INFO L125 PetriNetUnfolderBase]: For 1025681/1025688 co-relation queries the response was YES. [2024-06-28 03:19:41,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55340 conditions, 5971 events. 3614/5971 cut-off events. For 1025681/1025688 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 38482 event pairs, 949 based on Foata normal form. 3/5891 useless extension candidates. Maximal degree in co-relation 55211. Up to 5390 conditions per place. [2024-06-28 03:19:41,830 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 223 selfloop transitions, 26 changer transitions 0/286 dead transitions. [2024-06-28 03:19:41,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 286 transitions, 3693 flow [2024-06-28 03:19:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:19:41,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-28 03:19:41,831 INFO L175 Difference]: Start difference. First operand has 262 places, 268 transitions, 3106 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:19:41,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 286 transitions, 3693 flow [2024-06-28 03:19:42,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 286 transitions, 3503 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:42,973 INFO L231 Difference]: Finished difference. Result has 260 places, 271 transitions, 3031 flow [2024-06-28 03:19:42,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3031, PETRI_PLACES=260, PETRI_TRANSITIONS=271} [2024-06-28 03:19:42,974 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-28 03:19:42,974 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 271 transitions, 3031 flow [2024-06-28 03:19:42,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:42,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:42,974 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 03:19:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:19:42,974 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 03:19:42,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -158968485, now seen corresponding path program 4 times [2024-06-28 03:19:42,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:42,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153299897] [2024-06-28 03:19:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:42,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:43,791 INFO 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 03:19:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153299897] [2024-06-28 03:19:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153299897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:43,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893980250] [2024-06-28 03:19:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:43,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:43,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:19:43,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 271 transitions, 3031 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:19:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:44,892 INFO L124 PetriNetUnfolderBase]: 3619/5973 cut-off events. [2024-06-28 03:19:44,893 INFO L125 PetriNetUnfolderBase]: For 1046008/1046015 co-relation queries the response was YES. [2024-06-28 03:19:44,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55272 conditions, 5973 events. 3619/5973 cut-off events. For 1046008/1046015 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 38478 event pairs, 934 based on Foata normal form. 3/5893 useless extension candidates. Maximal degree in co-relation 55142. Up to 5384 conditions per place. [2024-06-28 03:19:44,967 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 214 selfloop transitions, 37 changer transitions 0/288 dead transitions. [2024-06-28 03:19:44,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 288 transitions, 3818 flow [2024-06-28 03:19:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:19:44,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 03:19:44,968 INFO L175 Difference]: Start difference. First operand has 260 places, 271 transitions, 3031 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:19:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 288 transitions, 3818 flow [2024-06-28 03:19:45,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 288 transitions, 3734 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:45,798 INFO L231 Difference]: Finished difference. Result has 263 places, 275 transitions, 3124 flow [2024-06-28 03:19:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3124, PETRI_PLACES=263, PETRI_TRANSITIONS=275} [2024-06-28 03:19:45,799 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-28 03:19:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 275 transitions, 3124 flow [2024-06-28 03:19:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:45,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:45,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:19:45,799 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 03:19:45,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1083150967, now seen corresponding path program 5 times [2024-06-28 03:19:45,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099950599] [2024-06-28 03:19:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:46,798 INFO 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 03:19:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099950599] [2024-06-28 03:19:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099950599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:19:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544946634] [2024-06-28 03:19:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:19:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:19:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:19:46,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:19:46,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 275 transitions, 3124 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:46,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:46,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:19:46,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:47,948 INFO L124 PetriNetUnfolderBase]: 3624/5983 cut-off events. [2024-06-28 03:19:47,948 INFO L125 PetriNetUnfolderBase]: For 1068027/1068039 co-relation queries the response was YES. [2024-06-28 03:19:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55959 conditions, 5983 events. 3624/5983 cut-off events. For 1068027/1068039 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 38610 event pairs, 948 based on Foata normal form. 5/5902 useless extension candidates. Maximal degree in co-relation 55827. Up to 5367 conditions per place. [2024-06-28 03:19:48,026 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 205 selfloop transitions, 53 changer transitions 0/295 dead transitions. [2024-06-28 03:19:48,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 295 transitions, 4197 flow [2024-06-28 03:19:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:19:48,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 03:19:48,027 INFO L175 Difference]: Start difference. First operand has 263 places, 275 transitions, 3124 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:19:48,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 295 transitions, 4197 flow [2024-06-28 03:19:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 295 transitions, 4085 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:19:49,183 INFO L231 Difference]: Finished difference. Result has 267 places, 284 transitions, 3330 flow [2024-06-28 03:19:49,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3330, PETRI_PLACES=267, PETRI_TRANSITIONS=284} [2024-06-28 03:19:49,184 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 222 predicate places. [2024-06-28 03:19:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 284 transitions, 3330 flow [2024-06-28 03:19:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:49,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:49,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:19:49,184 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 03:19:49,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1433180837, now seen corresponding path program 6 times [2024-06-28 03:19:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:49,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822738424] [2024-06-28 03:19:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:50,077 INFO 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 03:19:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822738424] [2024-06-28 03:19:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822738424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:50,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:50,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569934672] [2024-06-28 03:19:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:50,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:19:50,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 284 transitions, 3330 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:50,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:50,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:19:50,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:51,174 INFO L124 PetriNetUnfolderBase]: 3621/5969 cut-off events. [2024-06-28 03:19:51,174 INFO L125 PetriNetUnfolderBase]: For 1088161/1088173 co-relation queries the response was YES. [2024-06-28 03:19:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56421 conditions, 5969 events. 3621/5969 cut-off events. For 1088161/1088173 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38336 event pairs, 938 based on Foata normal form. 5/5888 useless extension candidates. Maximal degree in co-relation 56287. Up to 5364 conditions per place. [2024-06-28 03:19:51,246 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 204 selfloop transitions, 53 changer transitions 0/294 dead transitions. [2024-06-28 03:19:51,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 294 transitions, 4052 flow [2024-06-28 03:19:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:19:51,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:19:51,247 INFO L175 Difference]: Start difference. First operand has 267 places, 284 transitions, 3330 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:19:51,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 294 transitions, 4052 flow [2024-06-28 03:19:52,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 294 transitions, 3904 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 03:19:52,451 INFO L231 Difference]: Finished difference. Result has 272 places, 284 transitions, 3294 flow [2024-06-28 03:19:52,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3294, PETRI_PLACES=272, PETRI_TRANSITIONS=284} [2024-06-28 03:19:52,452 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2024-06-28 03:19:52,452 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 284 transitions, 3294 flow [2024-06-28 03:19:52,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:52,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:52,453 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 03:19:52,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:19:52,453 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:52,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1808676560, now seen corresponding path program 2 times [2024-06-28 03:19:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204449793] [2024-06-28 03:19:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204449793] [2024-06-28 03:19:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204449793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:53,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346873389] [2024-06-28 03:19:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:53,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:53,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 284 transitions, 3294 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:53,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:53,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:53,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:55,317 INFO L124 PetriNetUnfolderBase]: 3860/6275 cut-off events. [2024-06-28 03:19:55,317 INFO L125 PetriNetUnfolderBase]: For 1126739/1126748 co-relation queries the response was YES. [2024-06-28 03:19:55,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58216 conditions, 6275 events. 3860/6275 cut-off events. For 1126739/1126748 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 39491 event pairs, 942 based on Foata normal form. 6/6270 useless extension candidates. Maximal degree in co-relation 58080. Up to 5701 conditions per place. [2024-06-28 03:19:55,388 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 255 selfloop transitions, 53 changer transitions 0/321 dead transitions. [2024-06-28 03:19:55,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 321 transitions, 4109 flow [2024-06-28 03:19:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:55,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:19:55,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:19:55,389 INFO L175 Difference]: Start difference. First operand has 272 places, 284 transitions, 3294 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:19:55,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 321 transitions, 4109 flow [2024-06-28 03:19:56,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 321 transitions, 3962 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:56,490 INFO L231 Difference]: Finished difference. Result has 277 places, 289 transitions, 3385 flow [2024-06-28 03:19:56,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3385, PETRI_PLACES=277, PETRI_TRANSITIONS=289} [2024-06-28 03:19:56,490 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-28 03:19:56,491 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 289 transitions, 3385 flow [2024-06-28 03:19:56,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:56,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:56,491 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 03:19:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:19:56,491 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:56,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash -322450608, now seen corresponding path program 3 times [2024-06-28 03:19:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823573981] [2024-06-28 03:19:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:57,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823573981] [2024-06-28 03:19:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823573981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:57,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:57,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145747720] [2024-06-28 03:19:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:57,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:57,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:57,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:57,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 289 transitions, 3385 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:57,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:57,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:57,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:59,362 INFO L124 PetriNetUnfolderBase]: 3888/6343 cut-off events. [2024-06-28 03:19:59,363 INFO L125 PetriNetUnfolderBase]: For 1155776/1155787 co-relation queries the response was YES. [2024-06-28 03:19:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59423 conditions, 6343 events. 3888/6343 cut-off events. For 1155776/1155787 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 40181 event pairs, 957 based on Foata normal form. 6/6338 useless extension candidates. Maximal degree in co-relation 59286. Up to 5740 conditions per place. [2024-06-28 03:19:59,449 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 251 selfloop transitions, 66 changer transitions 0/330 dead transitions. [2024-06-28 03:19:59,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 330 transitions, 4276 flow [2024-06-28 03:19:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:19:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-28 03:19:59,450 INFO L175 Difference]: Start difference. First operand has 277 places, 289 transitions, 3385 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:19:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 330 transitions, 4276 flow [2024-06-28 03:20:00,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 330 transitions, 4069 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:00,747 INFO L231 Difference]: Finished difference. Result has 281 places, 299 transitions, 3519 flow [2024-06-28 03:20:00,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3519, PETRI_PLACES=281, PETRI_TRANSITIONS=299} [2024-06-28 03:20:00,747 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2024-06-28 03:20:00,747 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 299 transitions, 3519 flow [2024-06-28 03:20:00,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:00,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:00,747 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 03:20:00,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:20:00,748 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:00,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -311975088, now seen corresponding path program 4 times [2024-06-28 03:20:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343594464] [2024-06-28 03:20:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343594464] [2024-06-28 03:20:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343594464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:01,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852117367] [2024-06-28 03:20:01,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:01,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:02,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:02,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 299 transitions, 3519 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:02,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:02,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:02,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:03,605 INFO L124 PetriNetUnfolderBase]: 3905/6370 cut-off events. [2024-06-28 03:20:03,605 INFO L125 PetriNetUnfolderBase]: For 1181978/1181991 co-relation queries the response was YES. [2024-06-28 03:20:03,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60379 conditions, 6370 events. 3905/6370 cut-off events. For 1181978/1181991 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40456 event pairs, 903 based on Foata normal form. 6/6365 useless extension candidates. Maximal degree in co-relation 60240. Up to 5661 conditions per place. [2024-06-28 03:20:03,696 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 249 selfloop transitions, 75 changer transitions 0/337 dead transitions. [2024-06-28 03:20:03,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 337 transitions, 4785 flow [2024-06-28 03:20:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:20:03,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:20:03,697 INFO L175 Difference]: Start difference. First operand has 281 places, 299 transitions, 3519 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:20:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 337 transitions, 4785 flow [2024-06-28 03:20:04,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 337 transitions, 4598 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:04,992 INFO L231 Difference]: Finished difference. Result has 286 places, 303 transitions, 3693 flow [2024-06-28 03:20:04,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3693, PETRI_PLACES=286, PETRI_TRANSITIONS=303} [2024-06-28 03:20:04,993 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 241 predicate places. [2024-06-28 03:20:04,993 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 303 transitions, 3693 flow [2024-06-28 03:20:04,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:04,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:04,993 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 03:20:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:20:04,994 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:04,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash -607550478, now seen corresponding path program 5 times [2024-06-28 03:20:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977329759] [2024-06-28 03:20:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:04,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977329759] [2024-06-28 03:20:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977329759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437673138] [2024-06-28 03:20:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:06,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:06,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:06,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 303 transitions, 3693 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:06,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:06,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:06,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:07,990 INFO L124 PetriNetUnfolderBase]: 3922/6407 cut-off events. [2024-06-28 03:20:07,990 INFO L125 PetriNetUnfolderBase]: For 1205624/1205637 co-relation queries the response was YES. [2024-06-28 03:20:08,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59980 conditions, 6407 events. 3922/6407 cut-off events. For 1205624/1205637 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40761 event pairs, 967 based on Foata normal form. 6/6402 useless extension candidates. Maximal degree in co-relation 59840. Up to 5794 conditions per place. [2024-06-28 03:20:08,063 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 260 selfloop transitions, 64 changer transitions 0/337 dead transitions. [2024-06-28 03:20:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 337 transitions, 4536 flow [2024-06-28 03:20:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:20:08,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:20:08,064 INFO L175 Difference]: Start difference. First operand has 286 places, 303 transitions, 3693 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:20:08,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 337 transitions, 4536 flow [2024-06-28 03:20:09,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 337 transitions, 4283 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:09,641 INFO L231 Difference]: Finished difference. Result has 291 places, 306 transitions, 3706 flow [2024-06-28 03:20:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3706, PETRI_PLACES=291, PETRI_TRANSITIONS=306} [2024-06-28 03:20:09,641 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 246 predicate places. [2024-06-28 03:20:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 306 transitions, 3706 flow [2024-06-28 03:20:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:09,641 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 03:20:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:20:09,642 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 30868304, now seen corresponding path program 6 times [2024-06-28 03:20:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756749626] [2024-06-28 03:20:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:10,817 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 03:20:10,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756749626] [2024-06-28 03:20:10,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756749626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:10,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:10,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922429015] [2024-06-28 03:20:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:10,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:10,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:11,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:11,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 306 transitions, 3706 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:11,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:11,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:11,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:12,590 INFO L124 PetriNetUnfolderBase]: 3914/6395 cut-off events. [2024-06-28 03:20:12,590 INFO L125 PetriNetUnfolderBase]: For 1207549/1207562 co-relation queries the response was YES. [2024-06-28 03:20:12,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59526 conditions, 6395 events. 3914/6395 cut-off events. For 1207549/1207562 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40684 event pairs, 965 based on Foata normal form. 6/6390 useless extension candidates. Maximal degree in co-relation 59383. Up to 5782 conditions per place. [2024-06-28 03:20:12,677 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 262 selfloop transitions, 62 changer transitions 0/337 dead transitions. [2024-06-28 03:20:12,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 337 transitions, 4432 flow [2024-06-28 03:20:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 03:20:12,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-28 03:20:12,678 INFO L175 Difference]: Start difference. First operand has 291 places, 306 transitions, 3706 flow. Second operand 10 states and 199 transitions. [2024-06-28 03:20:12,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 337 transitions, 4432 flow [2024-06-28 03:20:14,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 337 transitions, 4201 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:14,814 INFO L231 Difference]: Finished difference. Result has 294 places, 306 transitions, 3606 flow [2024-06-28 03:20:14,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3606, PETRI_PLACES=294, PETRI_TRANSITIONS=306} [2024-06-28 03:20:14,814 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-28 03:20:14,814 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 306 transitions, 3606 flow [2024-06-28 03:20:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:14,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:14,814 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 03:20:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:20:14,814 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 03:20:14,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1514068187, now seen corresponding path program 2 times [2024-06-28 03:20:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425912306] [2024-06-28 03:20:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:15,833 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 03:20:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425912306] [2024-06-28 03:20:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425912306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:15,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:15,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4746096] [2024-06-28 03:20:15,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:15,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:15,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:15,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 306 transitions, 3606 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:15,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:15,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:15,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:16,995 INFO L124 PetriNetUnfolderBase]: 3629/6039 cut-off events. [2024-06-28 03:20:16,995 INFO L125 PetriNetUnfolderBase]: For 1219459/1219475 co-relation queries the response was YES. [2024-06-28 03:20:17,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57297 conditions, 6039 events. 3629/6039 cut-off events. For 1219459/1219475 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 39523 event pairs, 944 based on Foata normal form. 8/5955 useless extension candidates. Maximal degree in co-relation 57153. Up to 5341 conditions per place. [2024-06-28 03:20:17,082 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 221 selfloop transitions, 46 changer transitions 0/330 dead transitions. [2024-06-28 03:20:17,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 330 transitions, 4734 flow [2024-06-28 03:20:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:20:17,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 03:20:17,083 INFO L175 Difference]: Start difference. First operand has 294 places, 306 transitions, 3606 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:20:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 330 transitions, 4734 flow [2024-06-28 03:20:18,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 330 transitions, 4531 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-28 03:20:18,809 INFO L231 Difference]: Finished difference. Result has 290 places, 317 transitions, 3700 flow [2024-06-28 03:20:18,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3700, PETRI_PLACES=290, PETRI_TRANSITIONS=317} [2024-06-28 03:20:18,809 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 245 predicate places. [2024-06-28 03:20:18,809 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 317 transitions, 3700 flow [2024-06-28 03:20:18,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:18,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:18,809 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 03:20:18,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:20:18,809 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 03:20:18,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1417933797, now seen corresponding path program 3 times [2024-06-28 03:20:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313059974] [2024-06-28 03:20:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:18,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:19,837 INFO 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 03:20:19,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:19,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313059974] [2024-06-28 03:20:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313059974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:19,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:19,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:19,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676119656] [2024-06-28 03:20:19,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:19,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:19,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 317 transitions, 3700 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:21,015 INFO L124 PetriNetUnfolderBase]: 3615/6003 cut-off events. [2024-06-28 03:20:21,015 INFO L125 PetriNetUnfolderBase]: For 1236198/1236210 co-relation queries the response was YES. [2024-06-28 03:20:21,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57456 conditions, 6003 events. 3615/6003 cut-off events. For 1236198/1236210 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 39119 event pairs, 923 based on Foata normal form. 13/5924 useless extension candidates. Maximal degree in co-relation 57314. Up to 5328 conditions per place. [2024-06-28 03:20:21,098 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 218 selfloop transitions, 48 changer transitions 0/329 dead transitions. [2024-06-28 03:20:21,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 329 transitions, 4460 flow [2024-06-28 03:20:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:20:21,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:20:21,101 INFO L175 Difference]: Start difference. First operand has 290 places, 317 transitions, 3700 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:20:21,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 329 transitions, 4460 flow [2024-06-28 03:20:23,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 329 transitions, 4334 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 03:20:23,365 INFO L231 Difference]: Finished difference. Result has 295 places, 317 transitions, 3676 flow [2024-06-28 03:20:23,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3676, PETRI_PLACES=295, PETRI_TRANSITIONS=317} [2024-06-28 03:20:23,366 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 250 predicate places. [2024-06-28 03:20:23,366 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 317 transitions, 3676 flow [2024-06-28 03:20:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:23,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:23,366 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 03:20:23,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:20:23,366 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 03:20:23,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1513635737, now seen corresponding path program 4 times [2024-06-28 03:20:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681786736] [2024-06-28 03:20:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:23,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:24,375 INFO 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 03:20:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681786736] [2024-06-28 03:20:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681786736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:24,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460565601] [2024-06-28 03:20:24,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:24,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:24,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:24,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 317 transitions, 3676 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:24,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:24,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:25,687 INFO L124 PetriNetUnfolderBase]: 3601/5987 cut-off events. [2024-06-28 03:20:25,687 INFO L125 PetriNetUnfolderBase]: For 1249531/1249551 co-relation queries the response was YES. [2024-06-28 03:20:25,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57385 conditions, 5987 events. 3601/5987 cut-off events. For 1249531/1249551 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39088 event pairs, 923 based on Foata normal form. 8/5903 useless extension candidates. Maximal degree in co-relation 57241. Up to 5317 conditions per place. [2024-06-28 03:20:25,760 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 221 selfloop transitions, 45 changer transitions 0/329 dead transitions. [2024-06-28 03:20:25,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 329 transitions, 4245 flow [2024-06-28 03:20:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:20:25,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:20:25,761 INFO L175 Difference]: Start difference. First operand has 295 places, 317 transitions, 3676 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:20:25,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 329 transitions, 4245 flow [2024-06-28 03:20:27,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 329 transitions, 4121 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:27,612 INFO L231 Difference]: Finished difference. Result has 297 places, 318 transitions, 3657 flow [2024-06-28 03:20:27,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3657, PETRI_PLACES=297, PETRI_TRANSITIONS=318} [2024-06-28 03:20:27,613 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 252 predicate places. [2024-06-28 03:20:27,613 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 318 transitions, 3657 flow [2024-06-28 03:20:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:27,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:27,613 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 03:20:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:20:27,613 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 03:20:27,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1354035535, now seen corresponding path program 7 times [2024-06-28 03:20:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801926852] [2024-06-28 03:20:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:28,417 INFO 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 03:20:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801926852] [2024-06-28 03:20:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801926852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898743394] [2024-06-28 03:20:28,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:28,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:28,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:28,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 318 transitions, 3657 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:28,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:28,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:28,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:29,748 INFO L124 PetriNetUnfolderBase]: 3734/6156 cut-off events. [2024-06-28 03:20:29,748 INFO L125 PetriNetUnfolderBase]: For 1267376/1267379 co-relation queries the response was YES. [2024-06-28 03:20:29,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59036 conditions, 6156 events. 3734/6156 cut-off events. For 1267376/1267379 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 39623 event pairs, 892 based on Foata normal form. 3/6079 useless extension candidates. Maximal degree in co-relation 58891. Up to 5557 conditions per place. [2024-06-28 03:20:29,824 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 275 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2024-06-28 03:20:29,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 355 transitions, 4588 flow [2024-06-28 03:20:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:20:29,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:20:29,825 INFO L175 Difference]: Start difference. First operand has 297 places, 318 transitions, 3657 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:20:29,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 355 transitions, 4588 flow [2024-06-28 03:20:31,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 355 transitions, 4480 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:31,943 INFO L231 Difference]: Finished difference. Result has 302 places, 334 transitions, 3922 flow [2024-06-28 03:20:31,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3922, PETRI_PLACES=302, PETRI_TRANSITIONS=334} [2024-06-28 03:20:31,943 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 257 predicate places. [2024-06-28 03:20:31,943 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 334 transitions, 3922 flow [2024-06-28 03:20:31,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:31,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:31,944 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 03:20:31,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:20:31,944 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 03:20:31,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1602882917, now seen corresponding path program 1 times [2024-06-28 03:20:31,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:31,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777787564] [2024-06-28 03:20:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:31,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:32,815 INFO 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 03:20:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777787564] [2024-06-28 03:20:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777787564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529225859] [2024-06-28 03:20:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:32,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:32,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:32,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:32,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 334 transitions, 3922 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:32,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:32,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:32,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:34,460 INFO L124 PetriNetUnfolderBase]: 3865/6371 cut-off events. [2024-06-28 03:20:34,460 INFO L125 PetriNetUnfolderBase]: For 1300570/1300570 co-relation queries the response was YES. [2024-06-28 03:20:34,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60526 conditions, 6371 events. 3865/6371 cut-off events. For 1300570/1300570 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40873 event pairs, 912 based on Foata normal form. 2/6368 useless extension candidates. Maximal degree in co-relation 60378. Up to 5821 conditions per place. [2024-06-28 03:20:34,545 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 319 selfloop transitions, 32 changer transitions 0/370 dead transitions. [2024-06-28 03:20:34,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 4919 flow [2024-06-28 03:20:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:20:34,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:20:34,547 INFO L175 Difference]: Start difference. First operand has 302 places, 334 transitions, 3922 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:20:34,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 4919 flow [2024-06-28 03:20:35,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 370 transitions, 4823 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:35,831 INFO L231 Difference]: Finished difference. Result has 309 places, 352 transitions, 4163 flow [2024-06-28 03:20:35,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4163, PETRI_PLACES=309, PETRI_TRANSITIONS=352} [2024-06-28 03:20:35,831 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-06-28 03:20:35,832 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 352 transitions, 4163 flow [2024-06-28 03:20:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:35,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:35,832 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 03:20:35,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:20:35,832 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 03:20:35,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash -164674469, now seen corresponding path program 2 times [2024-06-28 03:20:35,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:35,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945866786] [2024-06-28 03:20:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:35,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:36,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945866786] [2024-06-28 03:20:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945866786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:36,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:36,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489679720] [2024-06-28 03:20:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:36,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:36,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:36,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:36,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 352 transitions, 4163 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:36,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:36,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:36,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:38,093 INFO L124 PetriNetUnfolderBase]: 3875/6386 cut-off events. [2024-06-28 03:20:38,093 INFO L125 PetriNetUnfolderBase]: For 1326251/1326251 co-relation queries the response was YES. [2024-06-28 03:20:38,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61710 conditions, 6386 events. 3875/6386 cut-off events. For 1326251/1326251 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40959 event pairs, 911 based on Foata normal form. 2/6383 useless extension candidates. Maximal degree in co-relation 61559. Up to 5827 conditions per place. [2024-06-28 03:20:38,180 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 320 selfloop transitions, 35 changer transitions 0/374 dead transitions. [2024-06-28 03:20:38,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 374 transitions, 5011 flow [2024-06-28 03:20:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:20:38,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:20:38,181 INFO L175 Difference]: Start difference. First operand has 309 places, 352 transitions, 4163 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:20:38,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 374 transitions, 5011 flow [2024-06-28 03:20:40,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 374 transitions, 4901 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:40,155 INFO L231 Difference]: Finished difference. Result has 312 places, 355 transitions, 4216 flow [2024-06-28 03:20:40,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4216, PETRI_PLACES=312, PETRI_TRANSITIONS=355} [2024-06-28 03:20:40,155 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 267 predicate places. [2024-06-28 03:20:40,155 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 355 transitions, 4216 flow [2024-06-28 03:20:40,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:40,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:40,156 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 03:20:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:20:40,156 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 03:20:40,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1478890280, now seen corresponding path program 1 times [2024-06-28 03:20:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872281561] [2024-06-28 03:20:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:41,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872281561] [2024-06-28 03:20:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872281561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862612610] [2024-06-28 03:20:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:41,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:41,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:41,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 355 transitions, 4216 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 03:20:41,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:41,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:41,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:42,520 INFO L124 PetriNetUnfolderBase]: 3993/6510 cut-off events. [2024-06-28 03:20:42,520 INFO L125 PetriNetUnfolderBase]: For 1343855/1343855 co-relation queries the response was YES. [2024-06-28 03:20:42,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63190 conditions, 6510 events. 3993/6510 cut-off events. For 1343855/1343855 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41190 event pairs, 948 based on Foata normal form. 1/6508 useless extension candidates. Maximal degree in co-relation 63039. Up to 6081 conditions per place. [2024-06-28 03:20:42,610 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 337 selfloop transitions, 26 changer transitions 0/374 dead transitions. [2024-06-28 03:20:42,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 374 transitions, 5070 flow [2024-06-28 03:20:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:20:42,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-28 03:20:42,611 INFO L175 Difference]: Start difference. First operand has 312 places, 355 transitions, 4216 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:20:42,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 374 transitions, 5070 flow [2024-06-28 03:20:44,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 374 transitions, 4939 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:44,650 INFO L231 Difference]: Finished difference. Result has 314 places, 358 transitions, 4225 flow [2024-06-28 03:20:44,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4225, PETRI_PLACES=314, PETRI_TRANSITIONS=358} [2024-06-28 03:20:44,650 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 269 predicate places. [2024-06-28 03:20:44,651 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 358 transitions, 4225 flow [2024-06-28 03:20:44,651 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 03:20:44,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:44,651 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 03:20:44,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:20:44,651 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 03:20:44,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash -164524739, now seen corresponding path program 3 times [2024-06-28 03:20:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:44,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250855234] [2024-06-28 03:20:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:45,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250855234] [2024-06-28 03:20:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250855234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:45,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367340058] [2024-06-28 03:20:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:45,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:45,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:45,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:45,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 358 transitions, 4225 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:45,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:45,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:45,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:46,918 INFO L124 PetriNetUnfolderBase]: 3900/6420 cut-off events. [2024-06-28 03:20:46,918 INFO L125 PetriNetUnfolderBase]: For 1351458/1351458 co-relation queries the response was YES. [2024-06-28 03:20:46,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62440 conditions, 6420 events. 3900/6420 cut-off events. For 1351458/1351458 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41132 event pairs, 913 based on Foata normal form. 2/6417 useless extension candidates. Maximal degree in co-relation 62288. Up to 5843 conditions per place. [2024-06-28 03:20:47,007 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 319 selfloop transitions, 39 changer transitions 0/378 dead transitions. [2024-06-28 03:20:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 5069 flow [2024-06-28 03:20:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:20:47,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:20:47,008 INFO L175 Difference]: Start difference. First operand has 314 places, 358 transitions, 4225 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:20:47,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 5069 flow [2024-06-28 03:20:48,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 378 transitions, 4953 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:48,735 INFO L231 Difference]: Finished difference. Result has 316 places, 361 transitions, 4273 flow [2024-06-28 03:20:48,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4273, PETRI_PLACES=316, PETRI_TRANSITIONS=361} [2024-06-28 03:20:48,735 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-28 03:20:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 361 transitions, 4273 flow [2024-06-28 03:20:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:48,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:48,735 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 03:20:48,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:20:48,735 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 03:20:48,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1345288342, now seen corresponding path program 2 times [2024-06-28 03:20:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:48,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869192859] [2024-06-28 03:20:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:48,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:49,741 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 03:20:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:49,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869192859] [2024-06-28 03:20:49,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869192859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:49,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:49,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:49,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738501687] [2024-06-28 03:20:49,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:49,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:49,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:49,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 361 transitions, 4273 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 03:20:49,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:49,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:49,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:51,171 INFO L124 PetriNetUnfolderBase]: 4016/6544 cut-off events. [2024-06-28 03:20:51,171 INFO L125 PetriNetUnfolderBase]: For 1375172/1375172 co-relation queries the response was YES. [2024-06-28 03:20:51,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64064 conditions, 6544 events. 4016/6544 cut-off events. For 1375172/1375172 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41428 event pairs, 950 based on Foata normal form. 1/6542 useless extension candidates. Maximal degree in co-relation 63911. Up to 6095 conditions per place. [2024-06-28 03:20:51,265 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 333 selfloop transitions, 37 changer transitions 0/381 dead transitions. [2024-06-28 03:20:51,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 381 transitions, 5429 flow [2024-06-28 03:20:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:20:51,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:20:51,266 INFO L175 Difference]: Start difference. First operand has 316 places, 361 transitions, 4273 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:20:51,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 381 transitions, 5429 flow [2024-06-28 03:20:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 381 transitions, 5287 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:53,276 INFO L231 Difference]: Finished difference. Result has 318 places, 367 transitions, 4381 flow [2024-06-28 03:20:53,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4381, PETRI_PLACES=318, PETRI_TRANSITIONS=367} [2024-06-28 03:20:53,277 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 273 predicate places. [2024-06-28 03:20:53,277 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 367 transitions, 4381 flow [2024-06-28 03:20:53,277 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 03:20:53,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:53,277 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 03:20:53,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:20:53,277 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 03:20:53,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1484454253, now seen corresponding path program 4 times [2024-06-28 03:20:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:53,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128408358] [2024-06-28 03:20:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:54,242 INFO 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 03:20:54,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128408358] [2024-06-28 03:20:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128408358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584437154] [2024-06-28 03:20:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:54,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:20:54,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 367 transitions, 4381 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:54,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:54,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:20:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:55,613 INFO L124 PetriNetUnfolderBase]: 3923/6454 cut-off events. [2024-06-28 03:20:55,613 INFO L125 PetriNetUnfolderBase]: For 1411035/1411035 co-relation queries the response was YES. [2024-06-28 03:20:55,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64047 conditions, 6454 events. 3923/6454 cut-off events. For 1411035/1411035 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41322 event pairs, 917 based on Foata normal form. 2/6451 useless extension candidates. Maximal degree in co-relation 63893. Up to 5856 conditions per place. [2024-06-28 03:20:55,705 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 317 selfloop transitions, 45 changer transitions 0/384 dead transitions. [2024-06-28 03:20:55,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 384 transitions, 5229 flow [2024-06-28 03:20:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:20:55,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 03:20:55,706 INFO L175 Difference]: Start difference. First operand has 318 places, 367 transitions, 4381 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:20:55,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 384 transitions, 5229 flow [2024-06-28 03:20:58,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 384 transitions, 5102 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:20:58,180 INFO L231 Difference]: Finished difference. Result has 322 places, 370 transitions, 4438 flow [2024-06-28 03:20:58,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4438, PETRI_PLACES=322, PETRI_TRANSITIONS=370} [2024-06-28 03:20:58,180 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-28 03:20:58,180 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 370 transitions, 4438 flow [2024-06-28 03:20:58,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:58,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:58,180 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 03:20:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:20:58,181 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 03:20:58,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash -158952892, now seen corresponding path program 3 times [2024-06-28 03:20:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598243639] [2024-06-28 03:20:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:59,189 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 03:20:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598243639] [2024-06-28 03:20:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598243639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:59,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:59,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166143194] [2024-06-28 03:20:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:59,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:59,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:20:59,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 370 transitions, 4438 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 03:20:59,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:59,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:20:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:00,587 INFO L124 PetriNetUnfolderBase]: 4023/6556 cut-off events. [2024-06-28 03:21:00,588 INFO L125 PetriNetUnfolderBase]: For 1422664/1422664 co-relation queries the response was YES. [2024-06-28 03:21:00,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65247 conditions, 6556 events. 4023/6556 cut-off events. For 1422664/1422664 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41465 event pairs, 950 based on Foata normal form. 1/6554 useless extension candidates. Maximal degree in co-relation 65091. Up to 6106 conditions per place. [2024-06-28 03:21:00,685 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 334 selfloop transitions, 38 changer transitions 0/383 dead transitions. [2024-06-28 03:21:00,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 383 transitions, 5222 flow [2024-06-28 03:21:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:21:00,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-28 03:21:00,686 INFO L175 Difference]: Start difference. First operand has 322 places, 370 transitions, 4438 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:21:00,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 383 transitions, 5222 flow [2024-06-28 03:21:03,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 383 transitions, 5004 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:03,128 INFO L231 Difference]: Finished difference. Result has 324 places, 370 transitions, 4302 flow [2024-06-28 03:21:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4302, PETRI_PLACES=324, PETRI_TRANSITIONS=370} [2024-06-28 03:21:03,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 279 predicate places. [2024-06-28 03:21:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 370 transitions, 4302 flow [2024-06-28 03:21:03,129 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 03:21:03,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:03,129 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 03:21:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:21:03,129 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 03:21:03,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -158952613, now seen corresponding path program 1 times [2024-06-28 03:21:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809763762] [2024-06-28 03:21:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:04,073 INFO 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 03:21:04,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809763762] [2024-06-28 03:21:04,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809763762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:04,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515059691] [2024-06-28 03:21:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:04,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:04,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:04,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 370 transitions, 4302 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:04,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:04,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:04,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:05,445 INFO L124 PetriNetUnfolderBase]: 3816/6287 cut-off events. [2024-06-28 03:21:05,445 INFO L125 PetriNetUnfolderBase]: For 1453673/1453683 co-relation queries the response was YES. [2024-06-28 03:21:05,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63848 conditions, 6287 events. 3816/6287 cut-off events. For 1453673/1453683 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40573 event pairs, 897 based on Foata normal form. 12/6222 useless extension candidates. Maximal degree in co-relation 63691. Up to 5708 conditions per place. [2024-06-28 03:21:05,537 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 326 selfloop transitions, 21 changer transitions 0/386 dead transitions. [2024-06-28 03:21:05,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 386 transitions, 5112 flow [2024-06-28 03:21:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:21:05,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:21:05,538 INFO L175 Difference]: Start difference. First operand has 324 places, 370 transitions, 4302 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:21:05,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 386 transitions, 5112 flow [2024-06-28 03:21:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 386 transitions, 5028 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:08,466 INFO L231 Difference]: Finished difference. Result has 325 places, 373 transitions, 4348 flow [2024-06-28 03:21:08,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4348, PETRI_PLACES=325, PETRI_TRANSITIONS=373} [2024-06-28 03:21:08,466 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 280 predicate places. [2024-06-28 03:21:08,466 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 373 transitions, 4348 flow [2024-06-28 03:21:08,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:08,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:08,467 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 03:21:08,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:21:08,467 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 03:21:08,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1418254554, now seen corresponding path program 4 times [2024-06-28 03:21:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288598385] [2024-06-28 03:21:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:09,552 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 03:21:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288598385] [2024-06-28 03:21:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288598385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:09,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990311841] [2024-06-28 03:21:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:09,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:21:09,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 373 transitions, 4348 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 03:21:09,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:09,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:21:09,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:10,894 INFO L124 PetriNetUnfolderBase]: 4033/6571 cut-off events. [2024-06-28 03:21:10,894 INFO L125 PetriNetUnfolderBase]: For 1471145/1471148 co-relation queries the response was YES. [2024-06-28 03:21:10,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65951 conditions, 6571 events. 4033/6571 cut-off events. For 1471145/1471148 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41564 event pairs, 953 based on Foata normal form. 1/6566 useless extension candidates. Maximal degree in co-relation 65793. Up to 6093 conditions per place. [2024-06-28 03:21:10,997 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 323 selfloop transitions, 57 changer transitions 0/391 dead transitions. [2024-06-28 03:21:10,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 391 transitions, 5546 flow [2024-06-28 03:21:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:21:10,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:21:10,998 INFO L175 Difference]: Start difference. First operand has 325 places, 373 transitions, 4348 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:21:10,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 391 transitions, 5546 flow [2024-06-28 03:21:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 391 transitions, 5438 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:13,604 INFO L231 Difference]: Finished difference. Result has 327 places, 379 transitions, 4550 flow [2024-06-28 03:21:13,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4550, PETRI_PLACES=327, PETRI_TRANSITIONS=379} [2024-06-28 03:21:13,604 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 282 predicate places. [2024-06-28 03:21:13,605 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 379 transitions, 4550 flow [2024-06-28 03:21:13,605 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 03:21:13,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:13,605 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 03:21:13,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:21:13,605 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 03:21:13,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:13,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1418254275, now seen corresponding path program 2 times [2024-06-28 03:21:13,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:13,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554911527] [2024-06-28 03:21:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554911527] [2024-06-28 03:21:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554911527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500373697] [2024-06-28 03:21:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:14,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:14,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 379 transitions, 4550 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:14,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:14,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:16,042 INFO L124 PetriNetUnfolderBase]: 3842/6327 cut-off events. [2024-06-28 03:21:16,042 INFO L125 PetriNetUnfolderBase]: For 1517912/1517922 co-relation queries the response was YES. [2024-06-28 03:21:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65572 conditions, 6327 events. 3842/6327 cut-off events. For 1517912/1517922 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40875 event pairs, 898 based on Foata normal form. 11/6261 useless extension candidates. Maximal degree in co-relation 65413. Up to 5705 conditions per place. [2024-06-28 03:21:16,142 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 315 selfloop transitions, 45 changer transitions 0/401 dead transitions. [2024-06-28 03:21:16,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 401 transitions, 6000 flow [2024-06-28 03:21:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:21:16,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 03:21:16,143 INFO L175 Difference]: Start difference. First operand has 327 places, 379 transitions, 4550 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:21:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 401 transitions, 6000 flow [2024-06-28 03:21:18,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 401 transitions, 5849 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:18,816 INFO L231 Difference]: Finished difference. Result has 331 places, 388 transitions, 4753 flow [2024-06-28 03:21:18,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4753, PETRI_PLACES=331, PETRI_TRANSITIONS=388} [2024-06-28 03:21:18,817 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-28 03:21:18,817 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 388 transitions, 4753 flow [2024-06-28 03:21:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:18,817 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 03:21:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:21:18,817 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 03:21:18,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1417927845, now seen corresponding path program 3 times [2024-06-28 03:21:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786385594] [2024-06-28 03:21:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:19,902 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 03:21:19,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:19,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786385594] [2024-06-28 03:21:19,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786385594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:19,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:19,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207922799] [2024-06-28 03:21:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:19,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:19,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:20,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:20,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 388 transitions, 4753 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:20,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:20,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:20,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:21,455 INFO L124 PetriNetUnfolderBase]: 3836/6319 cut-off events. [2024-06-28 03:21:21,455 INFO L125 PetriNetUnfolderBase]: For 1530983/1530993 co-relation queries the response was YES. [2024-06-28 03:21:21,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65523 conditions, 6319 events. 3836/6319 cut-off events. For 1530983/1530993 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40730 event pairs, 898 based on Foata normal form. 11/6253 useless extension candidates. Maximal degree in co-relation 65362. Up to 5700 conditions per place. [2024-06-28 03:21:21,537 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 312 selfloop transitions, 47 changer transitions 0/400 dead transitions. [2024-06-28 03:21:21,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 400 transitions, 5729 flow [2024-06-28 03:21:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:21:21,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:21:21,538 INFO L175 Difference]: Start difference. First operand has 331 places, 388 transitions, 4753 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:21:21,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 400 transitions, 5729 flow [2024-06-28 03:21:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 400 transitions, 5552 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:24,117 INFO L231 Difference]: Finished difference. Result has 336 places, 388 transitions, 4677 flow [2024-06-28 03:21:24,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4576, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4677, PETRI_PLACES=336, PETRI_TRANSITIONS=388} [2024-06-28 03:21:24,117 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 291 predicate places. [2024-06-28 03:21:24,117 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 388 transitions, 4677 flow [2024-06-28 03:21:24,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:24,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:24,117 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 03:21:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:21:24,117 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 03:21:24,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1427451324, now seen corresponding path program 5 times [2024-06-28 03:21:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161094027] [2024-06-28 03:21:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:25,113 INFO 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 03:21:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161094027] [2024-06-28 03:21:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161094027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645738990] [2024-06-28 03:21:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:25,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:25,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:21:25,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 388 transitions, 4677 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 03:21:25,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:25,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:21:25,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:26,585 INFO L124 PetriNetUnfolderBase]: 4053/6601 cut-off events. [2024-06-28 03:21:26,586 INFO L125 PetriNetUnfolderBase]: For 1550433/1550436 co-relation queries the response was YES. [2024-06-28 03:21:26,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67228 conditions, 6601 events. 4053/6601 cut-off events. For 1550433/1550436 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41817 event pairs, 953 based on Foata normal form. 1/6596 useless extension candidates. Maximal degree in co-relation 67065. Up to 6118 conditions per place. [2024-06-28 03:21:26,676 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 335 selfloop transitions, 57 changer transitions 0/403 dead transitions. [2024-06-28 03:21:26,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 403 transitions, 5809 flow [2024-06-28 03:21:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:21:26,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:21:26,677 INFO L175 Difference]: Start difference. First operand has 336 places, 388 transitions, 4677 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:21:26,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 403 transitions, 5809 flow [2024-06-28 03:21:30,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 403 transitions, 5717 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:30,527 INFO L231 Difference]: Finished difference. Result has 338 places, 391 transitions, 4793 flow [2024-06-28 03:21:30,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4585, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4793, PETRI_PLACES=338, PETRI_TRANSITIONS=391} [2024-06-28 03:21:30,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-28 03:21:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 391 transitions, 4793 flow [2024-06-28 03:21:30,528 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 03:21:30,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:30,528 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 03:21:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:21:30,528 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 03:21:30,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1083158903, now seen corresponding path program 5 times [2024-06-28 03:21:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462417229] [2024-06-28 03:21:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:31,600 INFO 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 03:21:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462417229] [2024-06-28 03:21:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462417229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:31,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572371153] [2024-06-28 03:21:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:31,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:31,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 391 transitions, 4793 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:31,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:31,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:31,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:33,090 INFO L124 PetriNetUnfolderBase]: 3950/6499 cut-off events. [2024-06-28 03:21:33,090 INFO L125 PetriNetUnfolderBase]: For 1580647/1580650 co-relation queries the response was YES. [2024-06-28 03:21:33,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66815 conditions, 6499 events. 3950/6499 cut-off events. For 1580647/1580650 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 41687 event pairs, 925 based on Foata normal form. 2/6493 useless extension candidates. Maximal degree in co-relation 66651. Up to 5875 conditions per place. [2024-06-28 03:21:33,190 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 327 selfloop transitions, 54 changer transitions 0/406 dead transitions. [2024-06-28 03:21:33,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 406 transitions, 5683 flow [2024-06-28 03:21:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:21:33,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:21:33,191 INFO L175 Difference]: Start difference. First operand has 338 places, 391 transitions, 4793 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:21:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 406 transitions, 5683 flow [2024-06-28 03:21:36,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 406 transitions, 5442 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:36,889 INFO L231 Difference]: Finished difference. Result has 339 places, 394 transitions, 4764 flow [2024-06-28 03:21:36,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4764, PETRI_PLACES=339, PETRI_TRANSITIONS=394} [2024-06-28 03:21:36,889 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 294 predicate places. [2024-06-28 03:21:36,890 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 394 transitions, 4764 flow [2024-06-28 03:21:36,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:36,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:36,890 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 03:21:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:21:36,890 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 03:21:36,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1427451045, now seen corresponding path program 4 times [2024-06-28 03:21:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637874971] [2024-06-28 03:21:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:37,917 INFO 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 03:21:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637874971] [2024-06-28 03:21:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637874971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971244617] [2024-06-28 03:21:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:38,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:38,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 394 transitions, 4764 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:38,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:38,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:38,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:39,332 INFO L124 PetriNetUnfolderBase]: 3837/6323 cut-off events. [2024-06-28 03:21:39,332 INFO L125 PetriNetUnfolderBase]: For 1590987/1590997 co-relation queries the response was YES. [2024-06-28 03:21:39,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66205 conditions, 6323 events. 3837/6323 cut-off events. For 1590987/1590997 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40753 event pairs, 897 based on Foata normal form. 11/6257 useless extension candidates. Maximal degree in co-relation 66041. Up to 5703 conditions per place. [2024-06-28 03:21:39,429 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 319 selfloop transitions, 44 changer transitions 0/405 dead transitions. [2024-06-28 03:21:39,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 405 transitions, 5524 flow [2024-06-28 03:21:39,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:21:39,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:21:39,430 INFO L175 Difference]: Start difference. First operand has 339 places, 394 transitions, 4764 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:21:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 405 transitions, 5524 flow [2024-06-28 03:21:42,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 405 transitions, 5282 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:42,543 INFO L231 Difference]: Finished difference. Result has 341 places, 394 transitions, 4616 flow [2024-06-28 03:21:42,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4616, PETRI_PLACES=341, PETRI_TRANSITIONS=394} [2024-06-28 03:21:42,544 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 03:21:42,544 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 394 transitions, 4616 flow [2024-06-28 03:21:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:42,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:42,544 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 03:21:42,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:21:42,544 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 03:21:42,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1427458764, now seen corresponding path program 6 times [2024-06-28 03:21:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517534471] [2024-06-28 03:21:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:43,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:43,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517534471] [2024-06-28 03:21:43,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517534471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:43,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628500170] [2024-06-28 03:21:43,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:43,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:21:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 394 transitions, 4616 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 03:21:43,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:43,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:21:43,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:44,936 INFO L124 PetriNetUnfolderBase]: 4041/6589 cut-off events. [2024-06-28 03:21:44,937 INFO L125 PetriNetUnfolderBase]: For 1603119/1603122 co-relation queries the response was YES. [2024-06-28 03:21:45,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67491 conditions, 6589 events. 4041/6589 cut-off events. For 1603119/1603122 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41811 event pairs, 952 based on Foata normal form. 1/6584 useless extension candidates. Maximal degree in co-relation 67326. Up to 6106 conditions per place. [2024-06-28 03:21:45,040 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 336 selfloop transitions, 58 changer transitions 0/405 dead transitions. [2024-06-28 03:21:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 405 transitions, 5438 flow [2024-06-28 03:21:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:21:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:21:45,041 INFO L175 Difference]: Start difference. First operand has 341 places, 394 transitions, 4616 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:21:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 405 transitions, 5438 flow [2024-06-28 03:21:48,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 405 transitions, 5242 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:48,674 INFO L231 Difference]: Finished difference. Result has 341 places, 394 transitions, 4542 flow [2024-06-28 03:21:48,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4420, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4542, PETRI_PLACES=341, PETRI_TRANSITIONS=394} [2024-06-28 03:21:48,674 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 03:21:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 394 transitions, 4542 flow [2024-06-28 03:21:48,674 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 03:21:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:48,675 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 03:21:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:21:48,675 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 03:21:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1417915941, now seen corresponding path program 1 times [2024-06-28 03:21:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697804056] [2024-06-28 03:21:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:50,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697804056] [2024-06-28 03:21:50,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697804056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:50,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753263887] [2024-06-28 03:21:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:50,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:50,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:50,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 394 transitions, 4542 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:50,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:51,519 INFO L124 PetriNetUnfolderBase]: 3741/6211 cut-off events. [2024-06-28 03:21:51,519 INFO L125 PetriNetUnfolderBase]: For 1622994/1623007 co-relation queries the response was YES. [2024-06-28 03:21:51,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65156 conditions, 6211 events. 3741/6211 cut-off events. For 1622994/1623007 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40577 event pairs, 924 based on Foata normal form. 6/6130 useless extension candidates. Maximal degree in co-relation 64990. Up to 5563 conditions per place. [2024-06-28 03:21:51,615 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 312 selfloop transitions, 21 changer transitions 0/408 dead transitions. [2024-06-28 03:21:51,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 408 transitions, 5314 flow [2024-06-28 03:21:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:21:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:21:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:21:51,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:21:51,616 INFO L175 Difference]: Start difference. First operand has 341 places, 394 transitions, 4542 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:21:51,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 408 transitions, 5314 flow [2024-06-28 03:21:53,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 408 transitions, 5190 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:53,982 INFO L231 Difference]: Finished difference. Result has 343 places, 397 transitions, 4548 flow [2024-06-28 03:21:53,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4418, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4548, PETRI_PLACES=343, PETRI_TRANSITIONS=397} [2024-06-28 03:21:53,982 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 03:21:53,982 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 397 transitions, 4548 flow [2024-06-28 03:21:53,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:53,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:53,982 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 03:21:53,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:21:53,983 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 03:21:53,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:53,983 INFO L85 PathProgramCache]: Analyzing trace with hash 413290487, now seen corresponding path program 1 times [2024-06-28 03:21:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895409687] [2024-06-28 03:21:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:54,897 INFO 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 03:21:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895409687] [2024-06-28 03:21:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895409687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:21:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833995334] [2024-06-28 03:21:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:54,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:21:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:21:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:21:55,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:21:55,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 397 transitions, 4548 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:55,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:55,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:21:55,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:56,589 INFO L124 PetriNetUnfolderBase]: 3855/6336 cut-off events. [2024-06-28 03:21:56,590 INFO L125 PetriNetUnfolderBase]: For 1652479/1652488 co-relation queries the response was YES. [2024-06-28 03:21:56,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66878 conditions, 6336 events. 3855/6336 cut-off events. For 1652479/1652488 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40845 event pairs, 886 based on Foata normal form. 6/6260 useless extension candidates. Maximal degree in co-relation 66711. Up to 5716 conditions per place. [2024-06-28 03:21:56,677 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 350 selfloop transitions, 25 changer transitions 0/425 dead transitions. [2024-06-28 03:21:56,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 425 transitions, 5478 flow [2024-06-28 03:21:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:21:56,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:21:56,678 INFO L175 Difference]: Start difference. First operand has 343 places, 397 transitions, 4548 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:21:56,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 425 transitions, 5478 flow [2024-06-28 03:21:59,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 425 transitions, 5290 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 03:21:59,612 INFO L231 Difference]: Finished difference. Result has 341 places, 400 transitions, 4516 flow [2024-06-28 03:21:59,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4516, PETRI_PLACES=341, PETRI_TRANSITIONS=400} [2024-06-28 03:21:59,613 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 03:21:59,613 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 400 transitions, 4516 flow [2024-06-28 03:21:59,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:59,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:59,613 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 03:21:59,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:21:59,613 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 03:21:59,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash 420909047, now seen corresponding path program 2 times [2024-06-28 03:21:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363698225] [2024-06-28 03:21:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:00,506 INFO 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 03:22:00,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363698225] [2024-06-28 03:22:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363698225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:00,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241499614] [2024-06-28 03:22:00,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:00,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:22:00,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 400 transitions, 4516 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:00,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:00,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:22:00,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:02,240 INFO L124 PetriNetUnfolderBase]: 3865/6352 cut-off events. [2024-06-28 03:22:02,241 INFO L125 PetriNetUnfolderBase]: For 1680813/1680822 co-relation queries the response was YES. [2024-06-28 03:22:02,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67579 conditions, 6352 events. 3865/6352 cut-off events. For 1680813/1680822 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40983 event pairs, 886 based on Foata normal form. 6/6276 useless extension candidates. Maximal degree in co-relation 67412. Up to 5724 conditions per place. [2024-06-28 03:22:02,346 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 351 selfloop transitions, 31 changer transitions 0/432 dead transitions. [2024-06-28 03:22:02,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 432 transitions, 5490 flow [2024-06-28 03:22:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:22:02,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:22:02,347 INFO L175 Difference]: Start difference. First operand has 341 places, 400 transitions, 4516 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:22:02,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 432 transitions, 5490 flow [2024-06-28 03:22:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 432 transitions, 5356 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:05,943 INFO L231 Difference]: Finished difference. Result has 345 places, 406 transitions, 4592 flow [2024-06-28 03:22:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4592, PETRI_PLACES=345, PETRI_TRANSITIONS=406} [2024-06-28 03:22:05,943 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 300 predicate places. [2024-06-28 03:22:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 406 transitions, 4592 flow [2024-06-28 03:22:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:05,944 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 03:22:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:22:05,944 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 03:22:05,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash 528581657, now seen corresponding path program 3 times [2024-06-28 03:22:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977050803] [2024-06-28 03:22:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:05,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:06,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977050803] [2024-06-28 03:22:06,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977050803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943931728] [2024-06-28 03:22:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:06,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:22:06,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 406 transitions, 4592 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:06,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:06,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:22:06,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:08,375 INFO L124 PetriNetUnfolderBase]: 3870/6363 cut-off events. [2024-06-28 03:22:08,376 INFO L125 PetriNetUnfolderBase]: For 1712033/1712043 co-relation queries the response was YES. [2024-06-28 03:22:08,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68317 conditions, 6363 events. 3870/6363 cut-off events. For 1712033/1712043 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41101 event pairs, 885 based on Foata normal form. 10/6292 useless extension candidates. Maximal degree in co-relation 68148. Up to 5655 conditions per place. [2024-06-28 03:22:08,466 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 335 selfloop transitions, 48 changer transitions 0/433 dead transitions. [2024-06-28 03:22:08,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 433 transitions, 5550 flow [2024-06-28 03:22:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:22:08,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 03:22:08,467 INFO L175 Difference]: Start difference. First operand has 345 places, 406 transitions, 4592 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:22:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 433 transitions, 5550 flow [2024-06-28 03:22:11,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 433 transitions, 5402 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:11,497 INFO L231 Difference]: Finished difference. Result has 347 places, 409 transitions, 4658 flow [2024-06-28 03:22:11,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4658, PETRI_PLACES=347, PETRI_TRANSITIONS=409} [2024-06-28 03:22:11,497 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 302 predicate places. [2024-06-28 03:22:11,497 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 409 transitions, 4658 flow [2024-06-28 03:22:11,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:11,497 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 03:22:11,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:22:11,498 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 03:22:11,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash 528933383, now seen corresponding path program 1 times [2024-06-28 03:22:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816775525] [2024-06-28 03:22:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:12,305 INFO 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 03:22:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816775525] [2024-06-28 03:22:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816775525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:12,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501956707] [2024-06-28 03:22:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:12,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:12,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:22:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 409 transitions, 4658 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 03:22:12,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:12,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:22:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:13,965 INFO L124 PetriNetUnfolderBase]: 4102/6660 cut-off events. [2024-06-28 03:22:13,965 INFO L125 PetriNetUnfolderBase]: For 1744351/1744354 co-relation queries the response was YES. [2024-06-28 03:22:14,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70783 conditions, 6660 events. 4102/6660 cut-off events. For 1744351/1744354 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 42142 event pairs, 939 based on Foata normal form. 1/6651 useless extension candidates. Maximal degree in co-relation 70613. Up to 6114 conditions per place. [2024-06-28 03:22:14,056 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 361 selfloop transitions, 55 changer transitions 0/435 dead transitions. [2024-06-28 03:22:14,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 435 transitions, 5664 flow [2024-06-28 03:22:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:22:14,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 03:22:14,057 INFO L175 Difference]: Start difference. First operand has 347 places, 409 transitions, 4658 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:22:14,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 435 transitions, 5664 flow [2024-06-28 03:22:17,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 435 transitions, 5472 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:17,722 INFO L231 Difference]: Finished difference. Result has 349 places, 412 transitions, 4680 flow [2024-06-28 03:22:17,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4680, PETRI_PLACES=349, PETRI_TRANSITIONS=412} [2024-06-28 03:22:17,722 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 304 predicate places. [2024-06-28 03:22:17,722 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 412 transitions, 4680 flow [2024-06-28 03:22:17,722 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 03:22:17,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:17,723 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 03:22:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:22:17,723 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 03:22:17,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1365217875, now seen corresponding path program 2 times [2024-06-28 03:22:17,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:17,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671027531] [2024-06-28 03:22:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671027531] [2024-06-28 03:22:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671027531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996222839] [2024-06-28 03:22:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:18,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:18,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:22:18,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 412 transitions, 4680 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 03:22:18,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:18,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:22:18,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:20,361 INFO L124 PetriNetUnfolderBase]: 4107/6667 cut-off events. [2024-06-28 03:22:20,361 INFO L125 PetriNetUnfolderBase]: For 1771979/1771982 co-relation queries the response was YES. [2024-06-28 03:22:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71366 conditions, 6667 events. 4107/6667 cut-off events. For 1771979/1771982 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 42176 event pairs, 939 based on Foata normal form. 1/6658 useless extension candidates. Maximal degree in co-relation 71195. Up to 6103 conditions per place. [2024-06-28 03:22:20,454 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 353 selfloop transitions, 63 changer transitions 0/435 dead transitions. [2024-06-28 03:22:20,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 435 transitions, 5680 flow [2024-06-28 03:22:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:22:20,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:22:20,455 INFO L175 Difference]: Start difference. First operand has 349 places, 412 transitions, 4680 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:22:20,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 435 transitions, 5680 flow [2024-06-28 03:22:23,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 435 transitions, 5488 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:23,633 INFO L231 Difference]: Finished difference. Result has 351 places, 415 transitions, 4726 flow [2024-06-28 03:22:23,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4726, PETRI_PLACES=351, PETRI_TRANSITIONS=415} [2024-06-28 03:22:23,633 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 306 predicate places. [2024-06-28 03:22:23,633 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 415 transitions, 4726 flow [2024-06-28 03:22:23,633 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 03:22:23,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:23,634 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 03:22:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:22:23,634 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 03:22:23,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash 528939707, now seen corresponding path program 4 times [2024-06-28 03:22:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380372922] [2024-06-28 03:22:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:24,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:24,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380372922] [2024-06-28 03:22:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380372922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:24,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:24,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:24,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764909067] [2024-06-28 03:22:24,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:24,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:24,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:22:24,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 415 transitions, 4726 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:24,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:24,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:22:24,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:26,097 INFO L124 PetriNetUnfolderBase]: 3885/6384 cut-off events. [2024-06-28 03:22:26,097 INFO L125 PetriNetUnfolderBase]: For 1798525/1798535 co-relation queries the response was YES. [2024-06-28 03:22:26,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70129 conditions, 6384 events. 3885/6384 cut-off events. For 1798525/1798535 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41201 event pairs, 884 based on Foata normal form. 10/6313 useless extension candidates. Maximal degree in co-relation 69957. Up to 5651 conditions per place. [2024-06-28 03:22:26,186 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 328 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2024-06-28 03:22:26,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 439 transitions, 5690 flow [2024-06-28 03:22:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:22:26,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:22:26,187 INFO L175 Difference]: Start difference. First operand has 351 places, 415 transitions, 4726 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:22:26,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 439 transitions, 5690 flow [2024-06-28 03:22:29,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 439 transitions, 5478 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:29,388 INFO L231 Difference]: Finished difference. Result has 353 places, 418 transitions, 4762 flow [2024-06-28 03:22:29,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4762, PETRI_PLACES=353, PETRI_TRANSITIONS=418} [2024-06-28 03:22:29,388 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-28 03:22:29,388 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 418 transitions, 4762 flow [2024-06-28 03:22:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:29,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:29,389 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 03:22:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:22:29,389 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 03:22:29,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 528940141, now seen corresponding path program 1 times [2024-06-28 03:22:29,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:29,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023156695] [2024-06-28 03:22:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:29,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:30,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:30,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023156695] [2024-06-28 03:22:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023156695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100087905] [2024-06-28 03:22:30,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:30,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:22:30,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 418 transitions, 4762 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 03:22:30,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:30,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:22:30,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:31,908 INFO L124 PetriNetUnfolderBase]: 3993/6496 cut-off events. [2024-06-28 03:22:31,908 INFO L125 PetriNetUnfolderBase]: For 1826675/1826685 co-relation queries the response was YES. [2024-06-28 03:22:31,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71429 conditions, 6496 events. 3993/6496 cut-off events. For 1826675/1826685 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41376 event pairs, 919 based on Foata normal form. 10/6429 useless extension candidates. Maximal degree in co-relation 71256. Up to 5954 conditions per place. [2024-06-28 03:22:31,998 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 352 selfloop transitions, 51 changer transitions 0/441 dead transitions. [2024-06-28 03:22:31,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 441 transitions, 5722 flow [2024-06-28 03:22:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:22:31,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:22:31,999 INFO L175 Difference]: Start difference. First operand has 353 places, 418 transitions, 4762 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:22:31,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 441 transitions, 5722 flow [2024-06-28 03:22:34,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 441 transitions, 5500 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:34,981 INFO L231 Difference]: Finished difference. Result has 355 places, 421 transitions, 4740 flow [2024-06-28 03:22:34,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4740, PETRI_PLACES=355, PETRI_TRANSITIONS=421} [2024-06-28 03:22:34,982 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 310 predicate places. [2024-06-28 03:22:34,982 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 421 transitions, 4740 flow [2024-06-28 03:22:34,982 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 03:22:34,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:34,982 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 03:22:34,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:22:34,982 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 03:22:34,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 777964553, now seen corresponding path program 2 times [2024-06-28 03:22:34,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650279551] [2024-06-28 03:22:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:34,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:35,987 INFO 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 03:22:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650279551] [2024-06-28 03:22:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650279551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:35,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:35,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981898400] [2024-06-28 03:22:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:35,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:36,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:22:36,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 421 transitions, 4740 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 03:22:36,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:36,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:22:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:37,559 INFO L124 PetriNetUnfolderBase]: 4006/6515 cut-off events. [2024-06-28 03:22:37,559 INFO L125 PetriNetUnfolderBase]: For 1862275/1862285 co-relation queries the response was YES. [2024-06-28 03:22:37,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72242 conditions, 6515 events. 4006/6515 cut-off events. For 1862275/1862285 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41539 event pairs, 925 based on Foata normal form. 10/6448 useless extension candidates. Maximal degree in co-relation 72068. Up to 5945 conditions per place. [2024-06-28 03:22:37,654 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 344 selfloop transitions, 64 changer transitions 0/446 dead transitions. [2024-06-28 03:22:37,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 446 transitions, 6051 flow [2024-06-28 03:22:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:22:37,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:22:37,655 INFO L175 Difference]: Start difference. First operand has 355 places, 421 transitions, 4740 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:22:37,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 446 transitions, 6051 flow [2024-06-28 03:22:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 446 transitions, 5877 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:41,677 INFO L231 Difference]: Finished difference. Result has 358 places, 429 transitions, 4917 flow [2024-06-28 03:22:41,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4566, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4917, PETRI_PLACES=358, PETRI_TRANSITIONS=429} [2024-06-28 03:22:41,678 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 313 predicate places. [2024-06-28 03:22:41,678 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 429 transitions, 4917 flow [2024-06-28 03:22:41,678 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 03:22:41,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:41,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:41,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:22:41,678 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 03:22:41,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1009295485, now seen corresponding path program 5 times [2024-06-28 03:22:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:41,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531115274] [2024-06-28 03:22:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531115274] [2024-06-28 03:22:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531115274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558346238] [2024-06-28 03:22:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:42,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:22:42,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 429 transitions, 4917 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:42,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:42,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:22:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:44,414 INFO L124 PetriNetUnfolderBase]: 3949/6473 cut-off events. [2024-06-28 03:22:44,415 INFO L125 PetriNetUnfolderBase]: For 1899630/1899639 co-relation queries the response was YES. [2024-06-28 03:22:44,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72753 conditions, 6473 events. 3949/6473 cut-off events. For 1899630/1899639 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41643 event pairs, 886 based on Foata normal form. 6/6393 useless extension candidates. Maximal degree in co-relation 72577. Up to 5825 conditions per place. [2024-06-28 03:22:44,513 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 372 selfloop transitions, 33 changer transitions 0/461 dead transitions. [2024-06-28 03:22:44,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 461 transitions, 6064 flow [2024-06-28 03:22:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:22:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:22:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:22:44,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:22:44,514 INFO L175 Difference]: Start difference. First operand has 358 places, 429 transitions, 4917 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:22:44,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 461 transitions, 6064 flow [2024-06-28 03:22:48,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 461 transitions, 5885 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-28 03:22:48,300 INFO L231 Difference]: Finished difference. Result has 366 places, 446 transitions, 5141 flow [2024-06-28 03:22:48,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5141, PETRI_PLACES=366, PETRI_TRANSITIONS=446} [2024-06-28 03:22:48,301 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 321 predicate places. [2024-06-28 03:22:48,301 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 446 transitions, 5141 flow [2024-06-28 03:22:48,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:48,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:48,301 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 03:22:48,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:22:48,301 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 03:22:48,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1865026229, now seen corresponding path program 3 times [2024-06-28 03:22:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:48,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051193269] [2024-06-28 03:22:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051193269] [2024-06-28 03:22:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051193269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:22:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107770717] [2024-06-28 03:22:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:49,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:22:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:22:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:22:49,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:22:49,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 446 transitions, 5141 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 03:22:49,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:49,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:22:49,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:50,898 INFO L124 PetriNetUnfolderBase]: 4043/6574 cut-off events. [2024-06-28 03:22:50,898 INFO L125 PetriNetUnfolderBase]: For 1927118/1927128 co-relation queries the response was YES. [2024-06-28 03:22:50,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73944 conditions, 6574 events. 4043/6574 cut-off events. For 1927118/1927128 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 41882 event pairs, 926 based on Foata normal form. 10/6507 useless extension candidates. Maximal degree in co-relation 73763. Up to 5992 conditions per place. [2024-06-28 03:22:51,000 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 363 selfloop transitions, 65 changer transitions 0/466 dead transitions. [2024-06-28 03:22:51,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 466 transitions, 6376 flow [2024-06-28 03:22:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:22:51,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:22:51,001 INFO L175 Difference]: Start difference. First operand has 366 places, 446 transitions, 5141 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:22:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 466 transitions, 6376 flow [2024-06-28 03:22:55,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 466 transitions, 6196 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 03:22:55,610 INFO L231 Difference]: Finished difference. Result has 371 places, 449 transitions, 5170 flow [2024-06-28 03:22:55,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4961, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5170, PETRI_PLACES=371, PETRI_TRANSITIONS=449} [2024-06-28 03:22:55,611 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-28 03:22:55,611 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 449 transitions, 5170 flow [2024-06-28 03:22:55,611 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 03:22:55,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:55,611 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 03:22:55,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:22:55,611 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 03:22:55,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1009415455, now seen corresponding path program 6 times [2024-06-28 03:22:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748997395] [2024-06-28 03:22:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:56,575 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 03:22:56,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:56,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748997395] [2024-06-28 03:22:56,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748997395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:56,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:56,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:56,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118117157] [2024-06-28 03:22:56,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:56,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:56,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:56,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:22:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 449 transitions, 5170 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:56,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:56,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:22:56,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:58,171 INFO L124 PetriNetUnfolderBase]: 3975/6514 cut-off events. [2024-06-28 03:22:58,172 INFO L125 PetriNetUnfolderBase]: For 1979003/1979013 co-relation queries the response was YES. [2024-06-28 03:22:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74463 conditions, 6514 events. 3975/6514 cut-off events. For 1979003/1979013 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 41982 event pairs, 889 based on Foata normal form. 10/6443 useless extension candidates. Maximal degree in co-relation 74281. Up to 5702 conditions per place. [2024-06-28 03:22:58,273 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 328 selfloop transitions, 91 changer transitions 0/476 dead transitions. [2024-06-28 03:22:58,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 476 transitions, 6968 flow [2024-06-28 03:22:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:22:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:22:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:22:58,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:22:58,274 INFO L175 Difference]: Start difference. First operand has 371 places, 449 transitions, 5170 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:22:58,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 476 transitions, 6968 flow [2024-06-28 03:23:02,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 476 transitions, 6813 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:02,525 INFO L231 Difference]: Finished difference. Result has 374 places, 458 transitions, 5605 flow [2024-06-28 03:23:02,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5605, PETRI_PLACES=374, PETRI_TRANSITIONS=458} [2024-06-28 03:23:02,525 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 329 predicate places. [2024-06-28 03:23:02,525 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 458 transitions, 5605 flow [2024-06-28 03:23:02,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:02,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:02,525 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 03:23:02,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:23:02,526 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 03:23:02,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1272084289, now seen corresponding path program 3 times [2024-06-28 03:23:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232557609] [2024-06-28 03:23:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:02,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:03,539 INFO 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 03:23:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232557609] [2024-06-28 03:23:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232557609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124880579] [2024-06-28 03:23:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:03,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:23:03,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 458 transitions, 5605 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 03:23:03,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:03,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:23:03,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:05,201 INFO L124 PetriNetUnfolderBase]: 4215/6822 cut-off events. [2024-06-28 03:23:05,201 INFO L125 PetriNetUnfolderBase]: For 2028449/2028452 co-relation queries the response was YES. [2024-06-28 03:23:05,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77420 conditions, 6822 events. 4215/6822 cut-off events. For 2028449/2028452 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 43112 event pairs, 945 based on Foata normal form. 1/6813 useless extension candidates. Maximal degree in co-relation 77237. Up to 6211 conditions per place. [2024-06-28 03:23:05,309 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 383 selfloop transitions, 74 changer transitions 0/481 dead transitions. [2024-06-28 03:23:05,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 481 transitions, 7057 flow [2024-06-28 03:23:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:23:05,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:23:05,309 INFO L175 Difference]: Start difference. First operand has 374 places, 458 transitions, 5605 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:23:05,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 481 transitions, 7057 flow [2024-06-28 03:23:09,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 481 transitions, 6850 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-28 03:23:09,413 INFO L231 Difference]: Finished difference. Result has 379 places, 464 transitions, 5786 flow [2024-06-28 03:23:09,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5398, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5786, PETRI_PLACES=379, PETRI_TRANSITIONS=464} [2024-06-28 03:23:09,414 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 334 predicate places. [2024-06-28 03:23:09,414 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 464 transitions, 5786 flow [2024-06-28 03:23:09,414 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 03:23:09,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:09,414 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 03:23:09,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:23:09,414 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:09,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 585076184, now seen corresponding path program 1 times [2024-06-28 03:23:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919026851] [2024-06-28 03:23:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:10,667 INFO 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 03:23:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919026851] [2024-06-28 03:23:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919026851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112877754] [2024-06-28 03:23:10,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:10,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:10,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:23:10,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 464 transitions, 5786 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:10,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:10,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:23:10,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:12,954 INFO L124 PetriNetUnfolderBase]: 4420/7214 cut-off events. [2024-06-28 03:23:12,954 INFO L125 PetriNetUnfolderBase]: For 2130680/2130683 co-relation queries the response was YES. [2024-06-28 03:23:13,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80385 conditions, 7214 events. 4420/7214 cut-off events. For 2130680/2130683 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 46598 event pairs, 927 based on Foata normal form. 12/7214 useless extension candidates. Maximal degree in co-relation 80200. Up to 5706 conditions per place. [2024-06-28 03:23:13,084 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 364 selfloop transitions, 135 changer transitions 0/523 dead transitions. [2024-06-28 03:23:13,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 523 transitions, 7280 flow [2024-06-28 03:23:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:23:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:23:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 03:23:13,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47520661157024796 [2024-06-28 03:23:13,086 INFO L175 Difference]: Start difference. First operand has 379 places, 464 transitions, 5786 flow. Second operand 11 states and 230 transitions. [2024-06-28 03:23:13,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 523 transitions, 7280 flow [2024-06-28 03:23:17,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 523 transitions, 7094 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 03:23:17,263 INFO L231 Difference]: Finished difference. Result has 388 places, 478 transitions, 6174 flow [2024-06-28 03:23:17,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6174, PETRI_PLACES=388, PETRI_TRANSITIONS=478} [2024-06-28 03:23:17,263 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 343 predicate places. [2024-06-28 03:23:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 478 transitions, 6174 flow [2024-06-28 03:23:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:17,264 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 03:23:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:23:17,264 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 03:23:17,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 410430551, now seen corresponding path program 1 times [2024-06-28 03:23:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928629515] [2024-06-28 03:23:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:18,184 INFO 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 03:23:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928629515] [2024-06-28 03:23:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928629515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:18,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203395702] [2024-06-28 03:23:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:18,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:23:18,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 478 transitions, 6174 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:18,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:18,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:23:18,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:19,962 INFO L124 PetriNetUnfolderBase]: 4201/6946 cut-off events. [2024-06-28 03:23:19,962 INFO L125 PetriNetUnfolderBase]: For 2110790/2110799 co-relation queries the response was YES. [2024-06-28 03:23:20,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79889 conditions, 6946 events. 4201/6946 cut-off events. For 2110790/2110799 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 45768 event pairs, 732 based on Foata normal form. 7/6901 useless extension candidates. Maximal degree in co-relation 79700. Up to 6209 conditions per place. [2024-06-28 03:23:20,088 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 420 selfloop transitions, 27 changer transitions 0/506 dead transitions. [2024-06-28 03:23:20,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 506 transitions, 7232 flow [2024-06-28 03:23:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:23:20,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 03:23:20,089 INFO L175 Difference]: Start difference. First operand has 388 places, 478 transitions, 6174 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:23:20,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 506 transitions, 7232 flow [2024-06-28 03:23:24,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 506 transitions, 6944 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:24,976 INFO L231 Difference]: Finished difference. Result has 390 places, 480 transitions, 6027 flow [2024-06-28 03:23:24,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5886, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6027, PETRI_PLACES=390, PETRI_TRANSITIONS=480} [2024-06-28 03:23:24,977 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-28 03:23:24,977 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 480 transitions, 6027 flow [2024-06-28 03:23:24,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:24,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:24,977 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 03:23:24,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:23:24,977 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 03:23:24,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1357025023, now seen corresponding path program 2 times [2024-06-28 03:23:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321636507] [2024-06-28 03:23:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:25,897 INFO 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 03:23:25,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321636507] [2024-06-28 03:23:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321636507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931744889] [2024-06-28 03:23:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:25,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:25,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:26,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:23:26,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 480 transitions, 6027 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:26,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:26,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:23:26,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:27,653 INFO L124 PetriNetUnfolderBase]: 4209/6948 cut-off events. [2024-06-28 03:23:27,654 INFO L125 PetriNetUnfolderBase]: For 2134397/2134406 co-relation queries the response was YES. [2024-06-28 03:23:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79675 conditions, 6948 events. 4209/6948 cut-off events. For 2134397/2134406 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45795 event pairs, 908 based on Foata normal form. 7/6873 useless extension candidates. Maximal degree in co-relation 79485. Up to 6251 conditions per place. [2024-06-28 03:23:27,777 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 414 selfloop transitions, 31 changer transitions 0/504 dead transitions. [2024-06-28 03:23:27,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 504 transitions, 7071 flow [2024-06-28 03:23:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:23:27,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:23:27,778 INFO L175 Difference]: Start difference. First operand has 390 places, 480 transitions, 6027 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:23:27,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 504 transitions, 7071 flow [2024-06-28 03:23:32,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 504 transitions, 6946 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:32,146 INFO L231 Difference]: Finished difference. Result has 392 places, 482 transitions, 6056 flow [2024-06-28 03:23:32,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5902, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6056, PETRI_PLACES=392, PETRI_TRANSITIONS=482} [2024-06-28 03:23:32,146 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 347 predicate places. [2024-06-28 03:23:32,146 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 482 transitions, 6056 flow [2024-06-28 03:23:32,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:32,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:32,147 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 03:23:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:23:32,147 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 03:23:32,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1009292509, now seen corresponding path program 3 times [2024-06-28 03:23:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242168988] [2024-06-28 03:23:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242168988] [2024-06-28 03:23:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242168988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:33,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22815907] [2024-06-28 03:23:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:33,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:33,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:23:33,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 482 transitions, 6056 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:33,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:33,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:23:33,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:34,902 INFO L124 PetriNetUnfolderBase]: 4217/6960 cut-off events. [2024-06-28 03:23:34,902 INFO L125 PetriNetUnfolderBase]: For 2170072/2170081 co-relation queries the response was YES. [2024-06-28 03:23:34,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80118 conditions, 6960 events. 4217/6960 cut-off events. For 2170072/2170081 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45847 event pairs, 908 based on Foata normal form. 7/6885 useless extension candidates. Maximal degree in co-relation 79927. Up to 6249 conditions per place. [2024-06-28 03:23:35,022 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 403 selfloop transitions, 39 changer transitions 0/501 dead transitions. [2024-06-28 03:23:35,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 501 transitions, 7080 flow [2024-06-28 03:23:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:23:35,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 03:23:35,023 INFO L175 Difference]: Start difference. First operand has 392 places, 482 transitions, 6056 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:23:35,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 501 transitions, 7080 flow [2024-06-28 03:23:39,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 501 transitions, 6940 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:39,155 INFO L231 Difference]: Finished difference. Result has 394 places, 484 transitions, 6090 flow [2024-06-28 03:23:39,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6090, PETRI_PLACES=394, PETRI_TRANSITIONS=484} [2024-06-28 03:23:39,156 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 349 predicate places. [2024-06-28 03:23:39,156 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 484 transitions, 6090 flow [2024-06-28 03:23:39,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:39,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:39,156 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 03:23:39,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:23:39,156 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 03:23:39,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1009723471, now seen corresponding path program 1 times [2024-06-28 03:23:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:39,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260670476] [2024-06-28 03:23:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:39,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:40,232 INFO 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 03:23:40,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260670476] [2024-06-28 03:23:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260670476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120268472] [2024-06-28 03:23:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:40,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:23:40,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 484 transitions, 6090 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:40,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:40,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:23:40,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:42,010 INFO L124 PetriNetUnfolderBase]: 4133/6860 cut-off events. [2024-06-28 03:23:42,010 INFO L125 PetriNetUnfolderBase]: For 2181992/2182005 co-relation queries the response was YES. [2024-06-28 03:23:42,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79343 conditions, 6860 events. 4133/6860 cut-off events. For 2181992/2182005 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45451 event pairs, 928 based on Foata normal form. 7/6773 useless extension candidates. Maximal degree in co-relation 79151. Up to 6039 conditions per place. [2024-06-28 03:23:42,128 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 370 selfloop transitions, 46 changer transitions 0/504 dead transitions. [2024-06-28 03:23:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 504 transitions, 7058 flow [2024-06-28 03:23:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:23:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:23:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:23:42,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 03:23:42,129 INFO L175 Difference]: Start difference. First operand has 394 places, 484 transitions, 6090 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:23:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 504 transitions, 7058 flow [2024-06-28 03:23:47,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 504 transitions, 6828 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:47,246 INFO L231 Difference]: Finished difference. Result has 395 places, 487 transitions, 6046 flow [2024-06-28 03:23:47,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5860, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6046, PETRI_PLACES=395, PETRI_TRANSITIONS=487} [2024-06-28 03:23:47,247 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 350 predicate places. [2024-06-28 03:23:47,247 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 487 transitions, 6046 flow [2024-06-28 03:23:47,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:47,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:47,247 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 03:23:47,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:23:47,247 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 03:23:47,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1659472079, now seen corresponding path program 4 times [2024-06-28 03:23:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:47,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193058260] [2024-06-28 03:23:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:47,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:48,052 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 03:23:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193058260] [2024-06-28 03:23:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193058260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:48,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:48,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:23:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371392747] [2024-06-28 03:23:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:23:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:23:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:23:48,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:23:48,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 487 transitions, 6046 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 03:23:48,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:48,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:23:48,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:50,023 INFO L124 PetriNetUnfolderBase]: 4459/7276 cut-off events. [2024-06-28 03:23:50,024 INFO L125 PetriNetUnfolderBase]: For 2212707/2212713 co-relation queries the response was YES. [2024-06-28 03:23:50,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83000 conditions, 7276 events. 4459/7276 cut-off events. For 2212707/2212713 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47051 event pairs, 959 based on Foata normal form. 5/7270 useless extension candidates. Maximal degree in co-relation 82810. Up to 6670 conditions per place. [2024-06-28 03:23:50,133 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 436 selfloop transitions, 52 changer transitions 0/512 dead transitions. [2024-06-28 03:23:50,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 512 transitions, 7204 flow [2024-06-28 03:23:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:23:50,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:23:50,134 INFO L175 Difference]: Start difference. First operand has 395 places, 487 transitions, 6046 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:23:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 512 transitions, 7204 flow [2024-06-28 03:23:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 512 transitions, 7040 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:55,567 INFO L231 Difference]: Finished difference. Result has 396 places, 490 transitions, 6098 flow [2024-06-28 03:23:55,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5882, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6098, PETRI_PLACES=396, PETRI_TRANSITIONS=490} [2024-06-28 03:23:55,568 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 351 predicate places. [2024-06-28 03:23:55,568 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 490 transitions, 6098 flow [2024-06-28 03:23:55,568 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 03:23:55,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:55,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:23:55,568 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 03:23:55,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 938521179, now seen corresponding path program 7 times [2024-06-28 03:23:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834104889] [2024-06-28 03:23:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:56,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834104889] [2024-06-28 03:23:56,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834104889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:56,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:23:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568369835] [2024-06-28 03:23:56,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:23:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:56,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:23:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:23:56,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:23:56,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 490 transitions, 6098 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:56,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:56,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:23:56,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:58,313 INFO L124 PetriNetUnfolderBase]: 4247/7010 cut-off events. [2024-06-28 03:23:58,314 INFO L125 PetriNetUnfolderBase]: For 2242765/2242772 co-relation queries the response was YES. [2024-06-28 03:23:58,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81616 conditions, 7010 events. 4247/7010 cut-off events. For 2242765/2242772 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46142 event pairs, 913 based on Foata normal form. 8/6932 useless extension candidates. Maximal degree in co-relation 81425. Up to 6204 conditions per place. [2024-06-28 03:23:58,434 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 405 selfloop transitions, 49 changer transitions 0/514 dead transitions. [2024-06-28 03:23:58,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 514 transitions, 7204 flow [2024-06-28 03:23:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:23:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:23:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:23:58,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:23:58,435 INFO L175 Difference]: Start difference. First operand has 396 places, 490 transitions, 6098 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:23:58,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 514 transitions, 7204 flow [2024-06-28 03:24:02,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 514 transitions, 7016 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:02,867 INFO L231 Difference]: Finished difference. Result has 398 places, 493 transitions, 6142 flow [2024-06-28 03:24:02,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5910, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6142, PETRI_PLACES=398, PETRI_TRANSITIONS=493} [2024-06-28 03:24:02,867 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 353 predicate places. [2024-06-28 03:24:02,867 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 493 transitions, 6142 flow [2024-06-28 03:24:02,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:02,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:02,868 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 03:24:02,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:24:02,868 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 03:24:02,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 944956035, now seen corresponding path program 5 times [2024-06-28 03:24:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:02,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556124628] [2024-06-28 03:24:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556124628] [2024-06-28 03:24:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556124628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451825280] [2024-06-28 03:24:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:03,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:03,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:03,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 493 transitions, 6142 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 03:24:03,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:03,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:03,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:05,647 INFO L124 PetriNetUnfolderBase]: 4469/7303 cut-off events. [2024-06-28 03:24:05,648 INFO L125 PetriNetUnfolderBase]: For 2276438/2276444 co-relation queries the response was YES. [2024-06-28 03:24:05,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83601 conditions, 7303 events. 4469/7303 cut-off events. For 2276438/2276444 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47335 event pairs, 957 based on Foata normal form. 5/7297 useless extension candidates. Maximal degree in co-relation 83409. Up to 6684 conditions per place. [2024-06-28 03:24:05,772 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 436 selfloop transitions, 58 changer transitions 0/518 dead transitions. [2024-06-28 03:24:05,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 518 transitions, 7318 flow [2024-06-28 03:24:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:24:05,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:24:05,773 INFO L175 Difference]: Start difference. First operand has 398 places, 493 transitions, 6142 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:24:05,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 518 transitions, 7318 flow [2024-06-28 03:24:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 518 transitions, 7114 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:11,080 INFO L231 Difference]: Finished difference. Result has 401 places, 496 transitions, 6172 flow [2024-06-28 03:24:11,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6172, PETRI_PLACES=401, PETRI_TRANSITIONS=496} [2024-06-28 03:24:11,080 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 356 predicate places. [2024-06-28 03:24:11,081 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 496 transitions, 6172 flow [2024-06-28 03:24:11,081 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 03:24:11,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:11,081 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 03:24:11,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:24:11,081 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 03:24:11,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 938879229, now seen corresponding path program 8 times [2024-06-28 03:24:11,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:11,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786639494] [2024-06-28 03:24:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:11,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786639494] [2024-06-28 03:24:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786639494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:12,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738922862] [2024-06-28 03:24:12,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:12,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:12,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:12,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:12,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:24:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 496 transitions, 6172 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:12,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:12,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:24:12,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:13,902 INFO L124 PetriNetUnfolderBase]: 4249/7013 cut-off events. [2024-06-28 03:24:13,902 INFO L125 PetriNetUnfolderBase]: For 2295437/2295444 co-relation queries the response was YES. [2024-06-28 03:24:13,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81850 conditions, 7013 events. 4249/7013 cut-off events. For 2295437/2295444 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46180 event pairs, 913 based on Foata normal form. 8/6935 useless extension candidates. Maximal degree in co-relation 81657. Up to 6197 conditions per place. [2024-06-28 03:24:14,023 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 401 selfloop transitions, 53 changer transitions 0/515 dead transitions. [2024-06-28 03:24:14,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 515 transitions, 7150 flow [2024-06-28 03:24:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:24:14,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:24:14,024 INFO L175 Difference]: Start difference. First operand has 401 places, 496 transitions, 6172 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:24:14,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 515 transitions, 7150 flow [2024-06-28 03:24:18,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 515 transitions, 6883 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:18,636 INFO L231 Difference]: Finished difference. Result has 403 places, 496 transitions, 6017 flow [2024-06-28 03:24:18,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5905, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6017, PETRI_PLACES=403, PETRI_TRANSITIONS=496} [2024-06-28 03:24:18,636 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-28 03:24:18,636 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 496 transitions, 6017 flow [2024-06-28 03:24:18,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:18,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:18,637 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 03:24:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:24:18,637 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 03:24:18,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1640109669, now seen corresponding path program 4 times [2024-06-28 03:24:18,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:18,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963546005] [2024-06-28 03:24:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963546005] [2024-06-28 03:24:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963546005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:19,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167251656] [2024-06-28 03:24:19,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:19,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:19,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:19,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 496 transitions, 6017 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 03:24:19,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:19,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:19,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:21,269 INFO L124 PetriNetUnfolderBase]: 4335/7095 cut-off events. [2024-06-28 03:24:21,269 INFO L125 PetriNetUnfolderBase]: For 2311663/2311676 co-relation queries the response was YES. [2024-06-28 03:24:21,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82199 conditions, 7095 events. 4335/7095 cut-off events. For 2311663/2311676 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46235 event pairs, 941 based on Foata normal form. 12/7028 useless extension candidates. Maximal degree in co-relation 82005. Up to 6491 conditions per place. [2024-06-28 03:24:21,397 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 429 selfloop transitions, 44 changer transitions 0/515 dead transitions. [2024-06-28 03:24:21,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 515 transitions, 7049 flow [2024-06-28 03:24:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:24:21,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:24:21,398 INFO L175 Difference]: Start difference. First operand has 403 places, 496 transitions, 6017 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:24:21,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 515 transitions, 7049 flow [2024-06-28 03:24:27,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 515 transitions, 6790 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:27,476 INFO L231 Difference]: Finished difference. Result has 404 places, 497 transitions, 5876 flow [2024-06-28 03:24:27,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5772, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5876, PETRI_PLACES=404, PETRI_TRANSITIONS=497} [2024-06-28 03:24:27,476 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 359 predicate places. [2024-06-28 03:24:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 497 transitions, 5876 flow [2024-06-28 03:24:27,477 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 03:24:27,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:27,477 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 03:24:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:24:27,477 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 03:24:27,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1399055777, now seen corresponding path program 6 times [2024-06-28 03:24:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529214796] [2024-06-28 03:24:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:28,417 INFO 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 03:24:28,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:28,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529214796] [2024-06-28 03:24:28,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529214796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:28,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418085724] [2024-06-28 03:24:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:28,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:28,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:28,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 497 transitions, 5876 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 03:24:28,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:28,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:28,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:30,267 INFO L124 PetriNetUnfolderBase]: 4468/7302 cut-off events. [2024-06-28 03:24:30,267 INFO L125 PetriNetUnfolderBase]: For 2350348/2350354 co-relation queries the response was YES. [2024-06-28 03:24:30,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83659 conditions, 7302 events. 4468/7302 cut-off events. For 2350348/2350354 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47379 event pairs, 957 based on Foata normal form. 5/7296 useless extension candidates. Maximal degree in co-relation 83464. Up to 6668 conditions per place. [2024-06-28 03:24:30,399 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 430 selfloop transitions, 65 changer transitions 0/519 dead transitions. [2024-06-28 03:24:30,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 519 transitions, 7062 flow [2024-06-28 03:24:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:24:30,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:24:30,400 INFO L175 Difference]: Start difference. First operand has 404 places, 497 transitions, 5876 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:24:30,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 519 transitions, 7062 flow [2024-06-28 03:24:36,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 519 transitions, 6968 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:36,701 INFO L231 Difference]: Finished difference. Result has 406 places, 500 transitions, 6050 flow [2024-06-28 03:24:36,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5782, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6050, PETRI_PLACES=406, PETRI_TRANSITIONS=500} [2024-06-28 03:24:36,702 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 361 predicate places. [2024-06-28 03:24:36,702 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 500 transitions, 6050 flow [2024-06-28 03:24:36,702 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 03:24:36,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:36,702 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 03:24:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:24:36,702 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 03:24:36,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1640109917, now seen corresponding path program 7 times [2024-06-28 03:24:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759458047] [2024-06-28 03:24:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:37,642 INFO 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 03:24:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759458047] [2024-06-28 03:24:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759458047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:24:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092189765] [2024-06-28 03:24:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:37,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:24:37,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:24:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:24:37,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:37,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 500 transitions, 6050 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 03:24:37,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:37,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:37,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:39,681 INFO L124 PetriNetUnfolderBase]: 4465/7297 cut-off events. [2024-06-28 03:24:39,681 INFO L125 PetriNetUnfolderBase]: For 2373850/2373856 co-relation queries the response was YES. [2024-06-28 03:24:39,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84081 conditions, 7297 events. 4465/7297 cut-off events. For 2373850/2373856 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47350 event pairs, 959 based on Foata normal form. 5/7291 useless extension candidates. Maximal degree in co-relation 83885. Up to 6669 conditions per place. [2024-06-28 03:24:39,791 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 436 selfloop transitions, 59 changer transitions 0/519 dead transitions. [2024-06-28 03:24:39,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 519 transitions, 7110 flow [2024-06-28 03:24:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:24:39,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:24:39,792 INFO L175 Difference]: Start difference. First operand has 406 places, 500 transitions, 6050 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:24:39,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 519 transitions, 7110 flow [2024-06-28 03:24:45,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 519 transitions, 6802 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:45,970 INFO L231 Difference]: Finished difference. Result has 408 places, 500 transitions, 5866 flow [2024-06-28 03:24:45,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5742, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5866, PETRI_PLACES=408, PETRI_TRANSITIONS=500} [2024-06-28 03:24:45,970 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 363 predicate places. [2024-06-28 03:24:45,970 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 500 transitions, 5866 flow [2024-06-28 03:24:45,970 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 03:24:45,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:45,970 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 03:24:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:24:45,971 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 03:24:45,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1226565887, now seen corresponding path program 8 times [2024-06-28 03:24:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:45,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243541228] [2024-06-28 03:24:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243541228] [2024-06-28 03:24:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243541228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:46,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119692183] [2024-06-28 03:24:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:46,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:46,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 500 transitions, 5866 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 03:24:46,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:46,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:46,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:48,747 INFO L124 PetriNetUnfolderBase]: 4478/7305 cut-off events. [2024-06-28 03:24:48,748 INFO L125 PetriNetUnfolderBase]: For 2416545/2416551 co-relation queries the response was YES. [2024-06-28 03:24:48,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84604 conditions, 7305 events. 4478/7305 cut-off events. For 2416545/2416551 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47228 event pairs, 959 based on Foata normal form. 5/7299 useless extension candidates. Maximal degree in co-relation 84407. Up to 6638 conditions per place. [2024-06-28 03:24:48,871 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 410 selfloop transitions, 88 changer transitions 0/522 dead transitions. [2024-06-28 03:24:48,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 522 transitions, 7462 flow [2024-06-28 03:24:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:24:48,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:24:48,871 INFO L175 Difference]: Start difference. First operand has 408 places, 500 transitions, 5866 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:24:48,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 522 transitions, 7462 flow [2024-06-28 03:24:55,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 522 transitions, 7269 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:24:55,092 INFO L231 Difference]: Finished difference. Result has 409 places, 506 transitions, 6125 flow [2024-06-28 03:24:55,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5673, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6125, PETRI_PLACES=409, PETRI_TRANSITIONS=506} [2024-06-28 03:24:55,092 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 364 predicate places. [2024-06-28 03:24:55,092 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 506 transitions, 6125 flow [2024-06-28 03:24:55,092 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 03:24:55,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:55,093 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 03:24:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:24:55,093 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 03:24:55,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:55,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1226802789, now seen corresponding path program 5 times [2024-06-28 03:24:55,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:55,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82200308] [2024-06-28 03:24:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:55,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:56,064 INFO 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 03:24:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82200308] [2024-06-28 03:24:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82200308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986735589] [2024-06-28 03:24:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:56,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:24:56,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 506 transitions, 6125 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 03:24:56,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:56,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:24:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:57,812 INFO L124 PetriNetUnfolderBase]: 4363/7144 cut-off events. [2024-06-28 03:24:57,812 INFO L125 PetriNetUnfolderBase]: For 2457651/2457664 co-relation queries the response was YES. [2024-06-28 03:24:57,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84291 conditions, 7144 events. 4363/7144 cut-off events. For 2457651/2457664 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 46653 event pairs, 941 based on Foata normal form. 12/7077 useless extension candidates. Maximal degree in co-relation 84093. Up to 6488 conditions per place. [2024-06-28 03:24:57,933 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 417 selfloop transitions, 66 changer transitions 0/528 dead transitions. [2024-06-28 03:24:57,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 528 transitions, 7641 flow [2024-06-28 03:24:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:24:57,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:24:57,934 INFO L175 Difference]: Start difference. First operand has 409 places, 506 transitions, 6125 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:24:57,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 528 transitions, 7641 flow [2024-06-28 03:25:03,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 528 transitions, 7397 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:03,815 INFO L231 Difference]: Finished difference. Result has 414 places, 512 transitions, 6237 flow [2024-06-28 03:25:03,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5881, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6237, PETRI_PLACES=414, PETRI_TRANSITIONS=512} [2024-06-28 03:25:03,815 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 369 predicate places. [2024-06-28 03:25:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 512 transitions, 6237 flow [2024-06-28 03:25:03,815 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 03:25:03,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:03,816 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 03:25:03,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:25:03,816 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 03:25:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1226327559, now seen corresponding path program 6 times [2024-06-28 03:25:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238324714] [2024-06-28 03:25:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:04,769 INFO 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 03:25:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238324714] [2024-06-28 03:25:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238324714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:04,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239326193] [2024-06-28 03:25:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:04,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:25:04,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 512 transitions, 6237 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 03:25:04,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:04,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:25:04,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:06,525 INFO L124 PetriNetUnfolderBase]: 4360/7130 cut-off events. [2024-06-28 03:25:06,526 INFO L125 PetriNetUnfolderBase]: For 2482525/2482538 co-relation queries the response was YES. [2024-06-28 03:25:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84614 conditions, 7130 events. 4360/7130 cut-off events. For 2482525/2482538 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46438 event pairs, 941 based on Foata normal form. 12/7063 useless extension candidates. Maximal degree in co-relation 84414. Up to 6485 conditions per place. [2024-06-28 03:25:06,660 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 414 selfloop transitions, 68 changer transitions 0/527 dead transitions. [2024-06-28 03:25:06,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 527 transitions, 7253 flow [2024-06-28 03:25:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:25:06,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:25:06,661 INFO L175 Difference]: Start difference. First operand has 414 places, 512 transitions, 6237 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:25:06,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 527 transitions, 7253 flow [2024-06-28 03:25:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 527 transitions, 6991 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-28 03:25:13,383 INFO L231 Difference]: Finished difference. Result has 417 places, 512 transitions, 6117 flow [2024-06-28 03:25:13,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5975, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6117, PETRI_PLACES=417, PETRI_TRANSITIONS=512} [2024-06-28 03:25:13,384 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 372 predicate places. [2024-06-28 03:25:13,384 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 512 transitions, 6117 flow [2024-06-28 03:25:13,384 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 03:25:13,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:13,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:25:13,384 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 03:25:13,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -143638217, now seen corresponding path program 9 times [2024-06-28 03:25:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141571149] [2024-06-28 03:25:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:14,396 INFO 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 03:25:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141571149] [2024-06-28 03:25:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141571149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916565933] [2024-06-28 03:25:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:14,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:25:14,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 512 transitions, 6117 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 03:25:14,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:25:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:16,451 INFO L124 PetriNetUnfolderBase]: 4485/7325 cut-off events. [2024-06-28 03:25:16,451 INFO L125 PetriNetUnfolderBase]: For 2511161/2511167 co-relation queries the response was YES. [2024-06-28 03:25:16,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85918 conditions, 7325 events. 4485/7325 cut-off events. For 2511161/2511167 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47499 event pairs, 959 based on Foata normal form. 5/7319 useless extension candidates. Maximal degree in co-relation 85716. Up to 6645 conditions per place. [2024-06-28 03:25:16,566 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 416 selfloop transitions, 85 changer transitions 0/527 dead transitions. [2024-06-28 03:25:16,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 527 transitions, 7171 flow [2024-06-28 03:25:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:25:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:25:16,567 INFO L175 Difference]: Start difference. First operand has 417 places, 512 transitions, 6117 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:25:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 527 transitions, 7171 flow [2024-06-28 03:25:22,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 527 transitions, 6939 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:25:22,248 INFO L231 Difference]: Finished difference. Result has 418 places, 512 transitions, 6061 flow [2024-06-28 03:25:22,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5885, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6061, PETRI_PLACES=418, PETRI_TRANSITIONS=512} [2024-06-28 03:25:22,248 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 373 predicate places. [2024-06-28 03:25:22,248 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 512 transitions, 6061 flow [2024-06-28 03:25:22,248 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 03:25:22,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:22,249 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 03:25:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:25:22,249 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 03:25:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -633054533, now seen corresponding path program 9 times [2024-06-28 03:25:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586676642] [2024-06-28 03:25:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:23,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586676642] [2024-06-28 03:25:23,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586676642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:23,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:23,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565714574] [2024-06-28 03:25:23,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:23,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:25:23,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 512 transitions, 6061 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:23,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:25:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:25,154 INFO L124 PetriNetUnfolderBase]: 4273/7049 cut-off events. [2024-06-28 03:25:25,154 INFO L125 PetriNetUnfolderBase]: For 2541897/2541904 co-relation queries the response was YES. [2024-06-28 03:25:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84468 conditions, 7049 events. 4273/7049 cut-off events. For 2541897/2541904 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46432 event pairs, 913 based on Foata normal form. 8/6971 useless extension candidates. Maximal degree in co-relation 84265. Up to 6188 conditions per place. [2024-06-28 03:25:25,280 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 387 selfloop transitions, 77 changer transitions 0/530 dead transitions. [2024-06-28 03:25:25,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 530 transitions, 7195 flow [2024-06-28 03:25:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:25:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:25:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:25:25,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:25:25,281 INFO L175 Difference]: Start difference. First operand has 418 places, 512 transitions, 6061 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:25:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 530 transitions, 7195 flow [2024-06-28 03:25:31,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 530 transitions, 6993 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:25:31,475 INFO L231 Difference]: Finished difference. Result has 420 places, 515 transitions, 6179 flow [2024-06-28 03:25:31,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5859, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6179, PETRI_PLACES=420, PETRI_TRANSITIONS=515} [2024-06-28 03:25:31,475 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 375 predicate places. [2024-06-28 03:25:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 515 transitions, 6179 flow [2024-06-28 03:25:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:31,475 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 03:25:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:25:31,476 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 03:25:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1301800075, now seen corresponding path program 10 times [2024-06-28 03:25:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388228198] [2024-06-28 03:25:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:32,492 INFO 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 03:25:32,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:32,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388228198] [2024-06-28 03:25:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388228198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:32,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604238784] [2024-06-28 03:25:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:32,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:32,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:25:32,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 515 transitions, 6179 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 03:25:32,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:32,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:25:32,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:34,291 INFO L124 PetriNetUnfolderBase]: 4503/7358 cut-off events. [2024-06-28 03:25:34,291 INFO L125 PetriNetUnfolderBase]: For 2596372/2596381 co-relation queries the response was YES. [2024-06-28 03:25:34,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87430 conditions, 7358 events. 4503/7358 cut-off events. For 2596372/2596381 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47771 event pairs, 989 based on Foata normal form. 5/7342 useless extension candidates. Maximal degree in co-relation 87226. Up to 6625 conditions per place. [2024-06-28 03:25:34,424 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 399 selfloop transitions, 112 changer transitions 0/537 dead transitions. [2024-06-28 03:25:34,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 537 transitions, 8249 flow [2024-06-28 03:25:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:25:34,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:25:34,425 INFO L175 Difference]: Start difference. First operand has 420 places, 515 transitions, 6179 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:25:34,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 537 transitions, 8249 flow [2024-06-28 03:25:40,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 537 transitions, 7951 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-28 03:25:40,706 INFO L231 Difference]: Finished difference. Result has 421 places, 524 transitions, 6543 flow [2024-06-28 03:25:40,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5881, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6543, PETRI_PLACES=421, PETRI_TRANSITIONS=524} [2024-06-28 03:25:40,707 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 376 predicate places. [2024-06-28 03:25:40,707 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 524 transitions, 6543 flow [2024-06-28 03:25:40,707 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 03:25:40,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:40,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:40,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:25:40,707 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 03:25:40,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash 711996231, now seen corresponding path program 10 times [2024-06-28 03:25:40,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:40,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770116690] [2024-06-28 03:25:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:41,845 INFO 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 03:25:41,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770116690] [2024-06-28 03:25:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770116690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:25:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259894968] [2024-06-28 03:25:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:41,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:25:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:25:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:25:41,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:25:41,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 524 transitions, 6543 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:41,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:41,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:25:41,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:43,627 INFO L124 PetriNetUnfolderBase]: 4291/7073 cut-off events. [2024-06-28 03:25:43,627 INFO L125 PetriNetUnfolderBase]: For 2631324/2631334 co-relation queries the response was YES. [2024-06-28 03:25:43,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86226 conditions, 7073 events. 4291/7073 cut-off events. For 2631324/2631334 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46632 event pairs, 940 based on Foata normal form. 10/6989 useless extension candidates. Maximal degree in co-relation 86021. Up to 6141 conditions per place. [2024-06-28 03:25:43,754 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 353 selfloop transitions, 120 changer transitions 0/542 dead transitions. [2024-06-28 03:25:43,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 542 transitions, 8143 flow [2024-06-28 03:25:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:25:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:25:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:25:43,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:25:43,755 INFO L175 Difference]: Start difference. First operand has 421 places, 524 transitions, 6543 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:25:43,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 542 transitions, 8143 flow [2024-06-28 03:25:49,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 542 transitions, 7754 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-28 03:25:50,004 INFO L231 Difference]: Finished difference. Result has 426 places, 530 transitions, 6730 flow [2024-06-28 03:25:50,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6730, PETRI_PLACES=426, PETRI_TRANSITIONS=530} [2024-06-28 03:25:50,005 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-28 03:25:50,005 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 530 transitions, 6730 flow [2024-06-28 03:25:50,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:50,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:50,005 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 03:25:50,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:25:50,005 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 03:25:50,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1479051751, now seen corresponding path program 11 times [2024-06-28 03:25:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:50,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299083996] [2024-06-28 03:25:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:25:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:25:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:25:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299083996] [2024-06-28 03:25:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299083996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:25:51,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:25:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:25:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075624992] [2024-06-28 03:25:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:25:51,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:25:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:25:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:25:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:25:51,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:25:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 530 transitions, 6730 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:51,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:25:51,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:25:51,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:25:53,118 INFO L124 PetriNetUnfolderBase]: 4296/7084 cut-off events. [2024-06-28 03:25:53,118 INFO L125 PetriNetUnfolderBase]: For 2662081/2662090 co-relation queries the response was YES. [2024-06-28 03:25:53,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86341 conditions, 7084 events. 4296/7084 cut-off events. For 2662081/2662090 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 46684 event pairs, 920 based on Foata normal form. 6/7001 useless extension candidates. Maximal degree in co-relation 86135. Up to 6325 conditions per place. [2024-06-28 03:25:53,236 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 430 selfloop transitions, 45 changer transitions 0/544 dead transitions. [2024-06-28 03:25:53,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 544 transitions, 7878 flow [2024-06-28 03:25:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:25:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:25:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:25:53,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:25:53,237 INFO L175 Difference]: Start difference. First operand has 426 places, 530 transitions, 6730 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:25:53,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 544 transitions, 7878 flow [2024-06-28 03:25:59,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 544 transitions, 7573 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-06-28 03:25:59,559 INFO L231 Difference]: Finished difference. Result has 429 places, 533 transitions, 6691 flow [2024-06-28 03:25:59,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6443, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6691, PETRI_PLACES=429, PETRI_TRANSITIONS=533} [2024-06-28 03:25:59,560 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 384 predicate places. [2024-06-28 03:25:59,560 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 533 transitions, 6691 flow [2024-06-28 03:25:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:59,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:59,560 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 03:25:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:25:59,560 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 03:25:59,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -317590397, now seen corresponding path program 11 times [2024-06-28 03:25:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:59,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21927240] [2024-06-28 03:25:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21927240] [2024-06-28 03:26:00,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21927240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:00,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:00,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780535989] [2024-06-28 03:26:00,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:00,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:00,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:00,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:00,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:26:00,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 533 transitions, 6691 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 03:26:00,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:00,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:26:00,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:02,418 INFO L124 PetriNetUnfolderBase]: 4510/7362 cut-off events. [2024-06-28 03:26:02,418 INFO L125 PetriNetUnfolderBase]: For 2685102/2685111 co-relation queries the response was YES. [2024-06-28 03:26:02,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88025 conditions, 7362 events. 4510/7362 cut-off events. For 2685102/2685111 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47760 event pairs, 992 based on Foata normal form. 5/7342 useless extension candidates. Maximal degree in co-relation 87817. Up to 6636 conditions per place. [2024-06-28 03:26:02,555 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 405 selfloop transitions, 114 changer transitions 0/545 dead transitions. [2024-06-28 03:26:02,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 545 transitions, 8063 flow [2024-06-28 03:26:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:26:02,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:26:02,555 INFO L175 Difference]: Start difference. First operand has 429 places, 533 transitions, 6691 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:26:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 545 transitions, 8063 flow [2024-06-28 03:26:10,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 545 transitions, 7653 flow, removed 117 selfloop flow, removed 8 redundant places. [2024-06-28 03:26:10,026 INFO L231 Difference]: Finished difference. Result has 429 places, 533 transitions, 6515 flow [2024-06-28 03:26:10,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6281, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6515, PETRI_PLACES=429, PETRI_TRANSITIONS=533} [2024-06-28 03:26:10,027 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 384 predicate places. [2024-06-28 03:26:10,027 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 533 transitions, 6515 flow [2024-06-28 03:26:10,027 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 03:26:10,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:10,027 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 03:26:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:26:10,028 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 03:26:10,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1301324597, now seen corresponding path program 7 times [2024-06-28 03:26:10,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:10,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105572879] [2024-06-28 03:26:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:11,080 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 03:26:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105572879] [2024-06-28 03:26:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105572879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825379007] [2024-06-28 03:26:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:11,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:26:11,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 533 transitions, 6515 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 03:26:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:11,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:26:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:12,932 INFO L124 PetriNetUnfolderBase]: 4395/7186 cut-off events. [2024-06-28 03:26:12,932 INFO L125 PetriNetUnfolderBase]: For 2724053/2724069 co-relation queries the response was YES. [2024-06-28 03:26:13,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87294 conditions, 7186 events. 4395/7186 cut-off events. For 2724053/2724069 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46856 event pairs, 954 based on Foata normal form. 14/7115 useless extension candidates. Maximal degree in co-relation 87086. Up to 6460 conditions per place. [2024-06-28 03:26:13,062 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 405 selfloop transitions, 107 changer transitions 0/560 dead transitions. [2024-06-28 03:26:13,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 560 transitions, 8581 flow [2024-06-28 03:26:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:26:13,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:26:13,063 INFO L175 Difference]: Start difference. First operand has 429 places, 533 transitions, 6515 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:26:13,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 560 transitions, 8581 flow [2024-06-28 03:26:20,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 560 transitions, 8353 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:26:20,329 INFO L231 Difference]: Finished difference. Result has 433 places, 547 transitions, 6979 flow [2024-06-28 03:26:20,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6287, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6979, PETRI_PLACES=433, PETRI_TRANSITIONS=547} [2024-06-28 03:26:20,330 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 388 predicate places. [2024-06-28 03:26:20,330 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 547 transitions, 6979 flow [2024-06-28 03:26:20,330 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 03:26:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:20,330 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 03:26:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:26:20,330 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 03:26:20,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1301799827, now seen corresponding path program 8 times [2024-06-28 03:26:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:20,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243451414] [2024-06-28 03:26:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:20,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:21,343 INFO 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 03:26:21,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243451414] [2024-06-28 03:26:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243451414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:21,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817433959] [2024-06-28 03:26:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:21,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:21,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:26:21,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 547 transitions, 6979 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 03:26:21,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:21,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:26:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:23,291 INFO L124 PetriNetUnfolderBase]: 4408/7208 cut-off events. [2024-06-28 03:26:23,291 INFO L125 PetriNetUnfolderBase]: For 2776304/2776320 co-relation queries the response was YES. [2024-06-28 03:26:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88389 conditions, 7208 events. 4408/7208 cut-off events. For 2776304/2776320 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47024 event pairs, 957 based on Foata normal form. 14/7137 useless extension candidates. Maximal degree in co-relation 88179. Up to 6475 conditions per place. [2024-06-28 03:26:23,408 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 408 selfloop transitions, 110 changer transitions 0/566 dead transitions. [2024-06-28 03:26:23,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 566 transitions, 8897 flow [2024-06-28 03:26:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:26:23,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:26:23,408 INFO L175 Difference]: Start difference. First operand has 433 places, 547 transitions, 6979 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:26:23,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 566 transitions, 8897 flow [2024-06-28 03:26:29,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 566 transitions, 8608 flow, removed 126 selfloop flow, removed 3 redundant places. [2024-06-28 03:26:29,832 INFO L231 Difference]: Finished difference. Result has 438 places, 553 transitions, 7156 flow [2024-06-28 03:26:29,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6746, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7156, PETRI_PLACES=438, PETRI_TRANSITIONS=553} [2024-06-28 03:26:29,832 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 393 predicate places. [2024-06-28 03:26:29,832 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 553 transitions, 7156 flow [2024-06-28 03:26:29,832 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 03:26:29,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:29,832 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 03:26:29,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:26:29,833 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 03:26:29,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1308220547, now seen corresponding path program 9 times [2024-06-28 03:26:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:29,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629021107] [2024-06-28 03:26:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:30,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:30,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629021107] [2024-06-28 03:26:30,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629021107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:30,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:30,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:26:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725256468] [2024-06-28 03:26:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:26:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:26:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:26:30,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:26:30,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 553 transitions, 7156 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 03:26:30,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:30,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:26:30,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:32,714 INFO L124 PetriNetUnfolderBase]: 4413/7217 cut-off events. [2024-06-28 03:26:32,714 INFO L125 PetriNetUnfolderBase]: For 2796967/2796983 co-relation queries the response was YES. [2024-06-28 03:26:32,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87975 conditions, 7217 events. 4413/7217 cut-off events. For 2796967/2796983 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47108 event pairs, 957 based on Foata normal form. 14/7146 useless extension candidates. Maximal degree in co-relation 87763. Up to 6481 conditions per place. [2024-06-28 03:26:32,848 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 408 selfloop transitions, 114 changer transitions 0/570 dead transitions. [2024-06-28 03:26:32,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 570 transitions, 8969 flow [2024-06-28 03:26:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:26:32,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:26:32,849 INFO L175 Difference]: Start difference. First operand has 438 places, 553 transitions, 7156 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:26:32,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 570 transitions, 8969 flow [2024-06-28 03:26:40,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 570 transitions, 8702 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:40,427 INFO L231 Difference]: Finished difference. Result has 442 places, 557 transitions, 7246 flow [2024-06-28 03:26:40,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6894, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7246, PETRI_PLACES=442, PETRI_TRANSITIONS=557} [2024-06-28 03:26:40,427 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 397 predicate places. [2024-06-28 03:26:40,427 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 557 transitions, 7246 flow [2024-06-28 03:26:40,427 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 03:26:40,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:40,428 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 03:26:40,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:26:40,428 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 03:26:40,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1478931595, now seen corresponding path program 12 times [2024-06-28 03:26:40,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:40,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328966030] [2024-06-28 03:26:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328966030] [2024-06-28 03:26:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328966030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406627701] [2024-06-28 03:26:41,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:41,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:41,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:26:41,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 557 transitions, 7246 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 03:26:41,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:41,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:26:41,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:43,436 INFO L124 PetriNetUnfolderBase]: 4544/7413 cut-off events. [2024-06-28 03:26:43,436 INFO L125 PetriNetUnfolderBase]: For 2827579/2827588 co-relation queries the response was YES. [2024-06-28 03:26:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89279 conditions, 7413 events. 4544/7413 cut-off events. For 2827579/2827588 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 48085 event pairs, 992 based on Foata normal form. 5/7401 useless extension candidates. Maximal degree in co-relation 89066. Up to 6670 conditions per place. [2024-06-28 03:26:43,573 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 421 selfloop transitions, 113 changer transitions 0/568 dead transitions. [2024-06-28 03:26:43,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 568 transitions, 8348 flow [2024-06-28 03:26:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:26:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:26:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:26:43,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:26:43,574 INFO L175 Difference]: Start difference. First operand has 442 places, 557 transitions, 7246 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:26:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 568 transitions, 8348 flow [2024-06-28 03:26:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 568 transitions, 7962 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-28 03:26:51,279 INFO L231 Difference]: Finished difference. Result has 446 places, 557 transitions, 7092 flow [2024-06-28 03:26:51,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7092, PETRI_PLACES=446, PETRI_TRANSITIONS=557} [2024-06-28 03:26:51,280 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 401 predicate places. [2024-06-28 03:26:51,280 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 557 transitions, 7092 flow [2024-06-28 03:26:51,280 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 03:26:51,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:26:51,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:26:51,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:26:51,280 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 03:26:51,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:26:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1478931781, now seen corresponding path program 12 times [2024-06-28 03:26:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:26:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430651430] [2024-06-28 03:26:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:26:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:26:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:26:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:26:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:26:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430651430] [2024-06-28 03:26:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430651430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:26:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:26:52,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:26:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459837675] [2024-06-28 03:26:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:26:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:26:52,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:26:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:26:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:26:52,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:26:52,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 557 transitions, 7092 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:26:52,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:26:52,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:26:52,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:26:54,484 INFO L124 PetriNetUnfolderBase]: 4322/7109 cut-off events. [2024-06-28 03:26:54,484 INFO L125 PetriNetUnfolderBase]: For 2846432/2846442 co-relation queries the response was YES. [2024-06-28 03:26:54,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87300 conditions, 7109 events. 4322/7109 cut-off events. For 2846432/2846442 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 46729 event pairs, 940 based on Foata normal form. 10/7029 useless extension candidates. Maximal degree in co-relation 87086. Up to 6173 conditions per place. [2024-06-28 03:26:54,612 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 374 selfloop transitions, 118 changer transitions 0/569 dead transitions. [2024-06-28 03:26:54,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 569 transitions, 8420 flow [2024-06-28 03:26:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:26:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:26:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:26:54,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:26:54,613 INFO L175 Difference]: Start difference. First operand has 446 places, 557 transitions, 7092 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:26:54,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 569 transitions, 8420 flow [2024-06-28 03:27:02,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 569 transitions, 8094 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:02,086 INFO L231 Difference]: Finished difference. Result has 446 places, 557 transitions, 7008 flow [2024-06-28 03:27:02,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6766, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7008, PETRI_PLACES=446, PETRI_TRANSITIONS=557} [2024-06-28 03:27:02,087 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 401 predicate places. [2024-06-28 03:27:02,087 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 557 transitions, 7008 flow [2024-06-28 03:27:02,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:02,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:02,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:27:02,088 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 03:27:02,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2106587701, now seen corresponding path program 10 times [2024-06-28 03:27:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:02,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710759] [2024-06-28 03:27:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:03,161 INFO 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 03:27:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710759] [2024-06-28 03:27:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:03,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:03,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257116240] [2024-06-28 03:27:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:03,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:03,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 557 transitions, 7008 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 03:27:03,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:03,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:05,034 INFO L124 PetriNetUnfolderBase]: 4404/7213 cut-off events. [2024-06-28 03:27:05,034 INFO L125 PetriNetUnfolderBase]: For 2864600/2864616 co-relation queries the response was YES. [2024-06-28 03:27:05,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87609 conditions, 7213 events. 4404/7213 cut-off events. For 2864600/2864616 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47208 event pairs, 957 based on Foata normal form. 14/7142 useless extension candidates. Maximal degree in co-relation 87395. Up to 6471 conditions per place. [2024-06-28 03:27:05,171 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 407 selfloop transitions, 115 changer transitions 0/570 dead transitions. [2024-06-28 03:27:05,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 570 transitions, 8710 flow [2024-06-28 03:27:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:27:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:27:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:27:05,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:27:05,172 INFO L175 Difference]: Start difference. First operand has 446 places, 557 transitions, 7008 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:27:05,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 570 transitions, 8710 flow [2024-06-28 03:27:12,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 570 transitions, 8168 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-28 03:27:12,115 INFO L231 Difference]: Finished difference. Result has 446 places, 557 transitions, 6702 flow [2024-06-28 03:27:12,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6702, PETRI_PLACES=446, PETRI_TRANSITIONS=557} [2024-06-28 03:27:12,116 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 401 predicate places. [2024-06-28 03:27:12,116 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 557 transitions, 6702 flow [2024-06-28 03:27:12,116 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 03:27:12,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:12,116 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 03:27:12,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:27:12,117 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 03:27:12,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1021938647, now seen corresponding path program 11 times [2024-06-28 03:27:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:12,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779487969] [2024-06-28 03:27:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:13,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779487969] [2024-06-28 03:27:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779487969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:13,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450059964] [2024-06-28 03:27:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:13,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:13,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 557 transitions, 6702 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 03:27:13,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:13,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:13,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:15,138 INFO L124 PetriNetUnfolderBase]: 4401/7209 cut-off events. [2024-06-28 03:27:15,138 INFO L125 PetriNetUnfolderBase]: For 2885503/2885519 co-relation queries the response was YES. [2024-06-28 03:27:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87232 conditions, 7209 events. 4401/7209 cut-off events. For 2885503/2885519 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47181 event pairs, 957 based on Foata normal form. 14/7138 useless extension candidates. Maximal degree in co-relation 87018. Up to 6468 conditions per place. [2024-06-28 03:27:15,256 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 400 selfloop transitions, 121 changer transitions 0/569 dead transitions. [2024-06-28 03:27:15,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 569 transitions, 8092 flow [2024-06-28 03:27:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:27:15,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:27:15,257 INFO L175 Difference]: Start difference. First operand has 446 places, 557 transitions, 6702 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:27:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 569 transitions, 8092 flow [2024-06-28 03:27:23,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 569 transitions, 7799 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:27:23,296 INFO L231 Difference]: Finished difference. Result has 447 places, 557 transitions, 6657 flow [2024-06-28 03:27:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6409, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6657, PETRI_PLACES=447, PETRI_TRANSITIONS=557} [2024-06-28 03:27:23,296 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-06-28 03:27:23,296 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 557 transitions, 6657 flow [2024-06-28 03:27:23,296 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 03:27:23,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:23,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:27:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:27:23,297 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 03:27:23,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1016224727, now seen corresponding path program 12 times [2024-06-28 03:27:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:23,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487326237] [2024-06-28 03:27:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:24,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487326237] [2024-06-28 03:27:24,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487326237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:24,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:24,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:27:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629987868] [2024-06-28 03:27:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:24,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:27:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:24,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:27:24,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:27:24,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:24,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 557 transitions, 6657 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 03:27:24,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:24,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:24,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:26,109 INFO L124 PetriNetUnfolderBase]: 4398/7191 cut-off events. [2024-06-28 03:27:26,109 INFO L125 PetriNetUnfolderBase]: For 2907997/2908013 co-relation queries the response was YES. [2024-06-28 03:27:26,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87200 conditions, 7191 events. 4398/7191 cut-off events. For 2907997/2908013 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 46871 event pairs, 954 based on Foata normal form. 14/7120 useless extension candidates. Maximal degree in co-relation 86985. Up to 6465 conditions per place. [2024-06-28 03:27:26,241 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 399 selfloop transitions, 121 changer transitions 0/568 dead transitions. [2024-06-28 03:27:26,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 568 transitions, 7731 flow [2024-06-28 03:27:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:27:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:27:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:27:26,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:27:26,242 INFO L175 Difference]: Start difference. First operand has 447 places, 557 transitions, 6657 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:27:26,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 568 transitions, 7731 flow [2024-06-28 03:27:33,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 568 transitions, 7377 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:27:33,770 INFO L231 Difference]: Finished difference. Result has 448 places, 557 transitions, 6551 flow [2024-06-28 03:27:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6303, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6551, PETRI_PLACES=448, PETRI_TRANSITIONS=557} [2024-06-28 03:27:33,771 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 403 predicate places. [2024-06-28 03:27:33,771 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 557 transitions, 6551 flow [2024-06-28 03:27:33,771 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 03:27:33,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:33,771 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 03:27:33,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:27:33,772 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash 234399418, now seen corresponding path program 2 times [2024-06-28 03:27:33,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922361193] [2024-06-28 03:27:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922361193] [2024-06-28 03:27:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922361193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231644475] [2024-06-28 03:27:35,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:35,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:35,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 557 transitions, 6551 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:35,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:35,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:35,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:37,591 INFO L124 PetriNetUnfolderBase]: 4695/7708 cut-off events. [2024-06-28 03:27:37,591 INFO L125 PetriNetUnfolderBase]: For 3038938/3038938 co-relation queries the response was YES. [2024-06-28 03:27:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90722 conditions, 7708 events. 4695/7708 cut-off events. For 3038938/3038938 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 50824 event pairs, 985 based on Foata normal form. 12/7710 useless extension candidates. Maximal degree in co-relation 90506. Up to 6227 conditions per place. [2024-06-28 03:27:37,722 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 443 selfloop transitions, 135 changer transitions 0/612 dead transitions. [2024-06-28 03:27:37,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 612 transitions, 8173 flow [2024-06-28 03:27:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 03:27:37,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2024-06-28 03:27:37,723 INFO L175 Difference]: Start difference. First operand has 448 places, 557 transitions, 6551 flow. Second operand 11 states and 228 transitions. [2024-06-28 03:27:37,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 612 transitions, 8173 flow [2024-06-28 03:27:45,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 612 transitions, 7943 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:27:45,301 INFO L231 Difference]: Finished difference. Result has 454 places, 568 transitions, 6847 flow [2024-06-28 03:27:45,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6847, PETRI_PLACES=454, PETRI_TRANSITIONS=568} [2024-06-28 03:27:45,302 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 409 predicate places. [2024-06-28 03:27:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 568 transitions, 6847 flow [2024-06-28 03:27:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:45,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:45,302 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 03:27:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:27:45,302 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:45,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1406033350, now seen corresponding path program 3 times [2024-06-28 03:27:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714602860] [2024-06-28 03:27:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:46,579 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 03:27:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714602860] [2024-06-28 03:27:46,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714602860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:46,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:46,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509664643] [2024-06-28 03:27:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:46,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:46,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:46,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 568 transitions, 6847 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:46,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:46,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:46,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:27:49,108 INFO L124 PetriNetUnfolderBase]: 4805/7917 cut-off events. [2024-06-28 03:27:49,108 INFO L125 PetriNetUnfolderBase]: For 3094685/3094685 co-relation queries the response was YES. [2024-06-28 03:27:49,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93460 conditions, 7917 events. 4805/7917 cut-off events. For 3094685/3094685 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 52856 event pairs, 1011 based on Foata normal form. 12/7919 useless extension candidates. Maximal degree in co-relation 93241. Up to 6592 conditions per place. [2024-06-28 03:27:49,249 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 432 selfloop transitions, 158 changer transitions 0/624 dead transitions. [2024-06-28 03:27:49,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 624 transitions, 8498 flow [2024-06-28 03:27:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:27:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:27:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 03:27:49,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-28 03:27:49,250 INFO L175 Difference]: Start difference. First operand has 454 places, 568 transitions, 6847 flow. Second operand 11 states and 225 transitions. [2024-06-28 03:27:49,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 624 transitions, 8498 flow [2024-06-28 03:27:57,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 624 transitions, 8179 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:27:57,846 INFO L231 Difference]: Finished difference. Result has 461 places, 580 transitions, 7131 flow [2024-06-28 03:27:57,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6546, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7131, PETRI_PLACES=461, PETRI_TRANSITIONS=580} [2024-06-28 03:27:57,846 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 416 predicate places. [2024-06-28 03:27:57,846 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 580 transitions, 7131 flow [2024-06-28 03:27:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:57,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:27:57,847 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 03:27:57,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:27:57,847 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:27:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:27:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash 956918330, now seen corresponding path program 4 times [2024-06-28 03:27:57,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:27:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525251360] [2024-06-28 03:27:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:27:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:27:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:27:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:27:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:27:59,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525251360] [2024-06-28 03:27:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525251360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:27:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:27:59,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:27:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111976400] [2024-06-28 03:27:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:27:59,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:27:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:27:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:27:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:27:59,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:27:59,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 580 transitions, 7131 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:27:59,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:27:59,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:27:59,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:02,089 INFO L124 PetriNetUnfolderBase]: 4928/8151 cut-off events. [2024-06-28 03:28:02,089 INFO L125 PetriNetUnfolderBase]: For 3139718/3139718 co-relation queries the response was YES. [2024-06-28 03:28:02,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95646 conditions, 8151 events. 4928/8151 cut-off events. For 3139718/3139718 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 55038 event pairs, 1054 based on Foata normal form. 12/8153 useless extension candidates. Maximal degree in co-relation 95424. Up to 6713 conditions per place. [2024-06-28 03:28:02,228 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 445 selfloop transitions, 148 changer transitions 0/627 dead transitions. [2024-06-28 03:28:02,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 627 transitions, 8706 flow [2024-06-28 03:28:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-28 03:28:02,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690082644628099 [2024-06-28 03:28:02,230 INFO L175 Difference]: Start difference. First operand has 461 places, 580 transitions, 7131 flow. Second operand 11 states and 227 transitions. [2024-06-28 03:28:02,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 627 transitions, 8706 flow [2024-06-28 03:28:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 627 transitions, 8427 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 03:28:11,718 INFO L231 Difference]: Finished difference. Result has 469 places, 584 transitions, 7325 flow [2024-06-28 03:28:11,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6852, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7325, PETRI_PLACES=469, PETRI_TRANSITIONS=584} [2024-06-28 03:28:11,719 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 424 predicate places. [2024-06-28 03:28:11,719 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 584 transitions, 7325 flow [2024-06-28 03:28:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:11,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:11,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:28:11,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:28:11,719 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:11,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1812652992, now seen corresponding path program 5 times [2024-06-28 03:28:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532379439] [2024-06-28 03:28:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:28:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532379439] [2024-06-28 03:28:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532379439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:13,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070610552] [2024-06-28 03:28:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:13,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:13,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:28:13,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 584 transitions, 7325 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:13,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:13,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:28:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:16,029 INFO L124 PetriNetUnfolderBase]: 5014/8316 cut-off events. [2024-06-28 03:28:16,029 INFO L125 PetriNetUnfolderBase]: For 3217859/3217875 co-relation queries the response was YES. [2024-06-28 03:28:16,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96393 conditions, 8316 events. 5014/8316 cut-off events. For 3217859/3217875 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 56484 event pairs, 1017 based on Foata normal form. 12/8316 useless extension candidates. Maximal degree in co-relation 96168. Up to 5553 conditions per place. [2024-06-28 03:28:16,287 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 418 selfloop transitions, 180 changer transitions 0/632 dead transitions. [2024-06-28 03:28:16,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 632 transitions, 9212 flow [2024-06-28 03:28:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-28 03:28:16,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669421487603306 [2024-06-28 03:28:16,288 INFO L175 Difference]: Start difference. First operand has 469 places, 584 transitions, 7325 flow. Second operand 11 states and 226 transitions. [2024-06-28 03:28:16,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 632 transitions, 9212 flow [2024-06-28 03:28:25,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 632 transitions, 8870 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:28:25,816 INFO L231 Difference]: Finished difference. Result has 475 places, 586 transitions, 7517 flow [2024-06-28 03:28:25,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6983, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7517, PETRI_PLACES=475, PETRI_TRANSITIONS=586} [2024-06-28 03:28:25,816 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 430 predicate places. [2024-06-28 03:28:25,816 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 586 transitions, 7517 flow [2024-06-28 03:28:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:25,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:25,816 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 03:28:25,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:28:25,817 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:25,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1654194728, now seen corresponding path program 6 times [2024-06-28 03:28:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:25,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500375823] [2024-06-28 03:28:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:27,078 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 03:28:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500375823] [2024-06-28 03:28:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500375823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:27,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:27,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:28:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996337472] [2024-06-28 03:28:27,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:27,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:28:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:28:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:28:27,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:28:27,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 586 transitions, 7517 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:27,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:27,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:28:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:30,277 INFO L124 PetriNetUnfolderBase]: 4990/8280 cut-off events. [2024-06-28 03:28:30,277 INFO L125 PetriNetUnfolderBase]: For 3119864/3119864 co-relation queries the response was YES. [2024-06-28 03:28:30,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94712 conditions, 8280 events. 4990/8280 cut-off events. For 3119864/3119864 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 56285 event pairs, 1067 based on Foata normal form. 12/8282 useless extension candidates. Maximal degree in co-relation 94485. Up to 6915 conditions per place. [2024-06-28 03:28:30,416 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 442 selfloop transitions, 153 changer transitions 0/629 dead transitions. [2024-06-28 03:28:30,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 629 transitions, 8795 flow [2024-06-28 03:28:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:28:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:28:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 03:28:30,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-28 03:28:30,417 INFO L175 Difference]: Start difference. First operand has 475 places, 586 transitions, 7517 flow. Second operand 11 states and 225 transitions. [2024-06-28 03:28:30,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 629 transitions, 8795 flow [2024-06-28 03:28:40,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 629 transitions, 8378 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 03:28:41,004 INFO L231 Difference]: Finished difference. Result has 477 places, 585 transitions, 7248 flow [2024-06-28 03:28:41,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7248, PETRI_PLACES=477, PETRI_TRANSITIONS=585} [2024-06-28 03:28:41,004 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 432 predicate places. [2024-06-28 03:28:41,005 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 585 transitions, 7248 flow [2024-06-28 03:28:41,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:41,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:41,005 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 03:28:41,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:28:41,005 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:41,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1479054727, now seen corresponding path program 4 times [2024-06-28 03:28:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356651141] [2024-06-28 03:28:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:42,138 INFO 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 03:28:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356651141] [2024-06-28 03:28:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356651141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:28:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548941728] [2024-06-28 03:28:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:42,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:28:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:28:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:28:42,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:28:42,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 585 transitions, 7248 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:42,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:42,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:28:42,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:44,730 INFO L124 PetriNetUnfolderBase]: 4768/7992 cut-off events. [2024-06-28 03:28:44,731 INFO L125 PetriNetUnfolderBase]: For 3042742/3042751 co-relation queries the response was YES. [2024-06-28 03:28:44,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91919 conditions, 7992 events. 4768/7992 cut-off events. For 3042742/3042751 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 55183 event pairs, 1035 based on Foata normal form. 7/7914 useless extension candidates. Maximal degree in co-relation 91691. Up to 7124 conditions per place. [2024-06-28 03:28:44,867 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 478 selfloop transitions, 44 changer transitions 0/599 dead transitions. [2024-06-28 03:28:44,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 599 transitions, 8424 flow [2024-06-28 03:28:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:28:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:28:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:28:44,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:28:44,868 INFO L175 Difference]: Start difference. First operand has 477 places, 585 transitions, 7248 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:28:44,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 599 transitions, 8424 flow [2024-06-28 03:28:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 599 transitions, 7399 flow, removed 28 selfloop flow, removed 19 redundant places. [2024-06-28 03:28:54,087 INFO L231 Difference]: Finished difference. Result has 466 places, 587 transitions, 6416 flow [2024-06-28 03:28:54,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6223, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6416, PETRI_PLACES=466, PETRI_TRANSITIONS=587} [2024-06-28 03:28:54,088 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 421 predicate places. [2024-06-28 03:28:54,088 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 587 transitions, 6416 flow [2024-06-28 03:28:54,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:54,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:28:54,088 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 03:28:54,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:28:54,088 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:28:54,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:28:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash -958880689, now seen corresponding path program 2 times [2024-06-28 03:28:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:28:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139411648] [2024-06-28 03:28:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:28:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:28:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:28:55,270 INFO 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 03:28:55,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:28:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139411648] [2024-06-28 03:28:55,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139411648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:28:55,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:28:55,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:28:55,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789353636] [2024-06-28 03:28:55,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:28:55,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:28:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:28:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:28:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:28:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:28:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 587 transitions, 6416 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:28:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:28:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:28:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:28:57,646 INFO L124 PetriNetUnfolderBase]: 4601/7763 cut-off events. [2024-06-28 03:28:57,646 INFO L125 PetriNetUnfolderBase]: For 3064640/3064671 co-relation queries the response was YES. [2024-06-28 03:28:57,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86579 conditions, 7763 events. 4601/7763 cut-off events. For 3064640/3064671 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 54142 event pairs, 1029 based on Foata normal form. 10/7643 useless extension candidates. Maximal degree in co-relation 86361. Up to 6793 conditions per place. [2024-06-28 03:28:57,773 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 421 selfloop transitions, 70 changer transitions 0/606 dead transitions. [2024-06-28 03:28:57,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 606 transitions, 7948 flow [2024-06-28 03:28:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:28:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:28:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:28:57,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:28:57,774 INFO L175 Difference]: Start difference. First operand has 466 places, 587 transitions, 6416 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:28:57,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 606 transitions, 7948 flow [2024-06-28 03:29:05,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 606 transitions, 7771 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:29:05,727 INFO L231 Difference]: Finished difference. Result has 469 places, 593 transitions, 6575 flow [2024-06-28 03:29:05,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6239, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6575, PETRI_PLACES=469, PETRI_TRANSITIONS=593} [2024-06-28 03:29:05,728 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 424 predicate places. [2024-06-28 03:29:05,728 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 593 transitions, 6575 flow [2024-06-28 03:29:05,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:05,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:05,728 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 03:29:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:29:05,728 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:05,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1021927735, now seen corresponding path program 3 times [2024-06-28 03:29:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352983574] [2024-06-28 03:29:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352983574] [2024-06-28 03:29:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352983574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005493398] [2024-06-28 03:29:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:06,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:06,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:06,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:07,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:29:07,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 593 transitions, 6575 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:07,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:07,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:29:07,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:09,230 INFO L124 PetriNetUnfolderBase]: 4606/7774 cut-off events. [2024-06-28 03:29:09,230 INFO L125 PetriNetUnfolderBase]: For 3105002/3105017 co-relation queries the response was YES. [2024-06-28 03:29:09,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87286 conditions, 7774 events. 4606/7774 cut-off events. For 3105002/3105017 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 54211 event pairs, 1030 based on Foata normal form. 7/7651 useless extension candidates. Maximal degree in co-relation 87067. Up to 6799 conditions per place. [2024-06-28 03:29:09,361 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 415 selfloop transitions, 79 changer transitions 0/609 dead transitions. [2024-06-28 03:29:09,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 609 transitions, 8029 flow [2024-06-28 03:29:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:29:09,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:29:09,362 INFO L175 Difference]: Start difference. First operand has 469 places, 593 transitions, 6575 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:29:09,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 609 transitions, 8029 flow [2024-06-28 03:29:18,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 609 transitions, 7864 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 03:29:18,203 INFO L231 Difference]: Finished difference. Result has 473 places, 596 transitions, 6672 flow [2024-06-28 03:29:18,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6672, PETRI_PLACES=473, PETRI_TRANSITIONS=596} [2024-06-28 03:29:18,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 428 predicate places. [2024-06-28 03:29:18,204 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 596 transitions, 6672 flow [2024-06-28 03:29:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:18,204 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 03:29:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:29:18,204 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:18,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1005738295, now seen corresponding path program 4 times [2024-06-28 03:29:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608326879] [2024-06-28 03:29:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:18,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:19,493 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 03:29:19,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:19,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608326879] [2024-06-28 03:29:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608326879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:29:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548308444] [2024-06-28 03:29:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:19,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:29:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:29:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:29:19,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:29:19,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 596 transitions, 6672 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:19,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:19,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:29:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:21,955 INFO L124 PetriNetUnfolderBase]: 4603/7778 cut-off events. [2024-06-28 03:29:21,955 INFO L125 PetriNetUnfolderBase]: For 3141422/3141455 co-relation queries the response was YES. [2024-06-28 03:29:22,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87634 conditions, 7778 events. 4603/7778 cut-off events. For 3141422/3141455 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 54375 event pairs, 1035 based on Foata normal form. 7/7661 useless extension candidates. Maximal degree in co-relation 87413. Up to 6911 conditions per place. [2024-06-28 03:29:22,196 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 474 selfloop transitions, 21 changer transitions 0/610 dead transitions. [2024-06-28 03:29:22,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 610 transitions, 7788 flow [2024-06-28 03:29:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:29:22,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:29:22,197 INFO L175 Difference]: Start difference. First operand has 473 places, 596 transitions, 6672 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:29:22,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 610 transitions, 7788 flow [2024-06-28 03:29:32,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 610 transitions, 7537 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:32,337 INFO L231 Difference]: Finished difference. Result has 475 places, 599 transitions, 6571 flow [2024-06-28 03:29:32,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6429, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6571, PETRI_PLACES=475, PETRI_TRANSITIONS=599} [2024-06-28 03:29:32,338 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 430 predicate places. [2024-06-28 03:29:32,338 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 599 transitions, 6571 flow [2024-06-28 03:29:32,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:32,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:32,338 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 03:29:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:29:32,338 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:32,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -486529969, now seen corresponding path program 5 times [2024-06-28 03:29:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276578405] [2024-06-28 03:29:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:29:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276578405] [2024-06-28 03:29:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276578405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733660455] [2024-06-28 03:29:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:33,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:33,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:29:33,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 599 transitions, 6571 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:33,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:33,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:29:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:35,803 INFO L124 PetriNetUnfolderBase]: 4605/7772 cut-off events. [2024-06-28 03:29:35,803 INFO L125 PetriNetUnfolderBase]: For 3149443/3149477 co-relation queries the response was YES. [2024-06-28 03:29:35,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87208 conditions, 7772 events. 4605/7772 cut-off events. For 3149443/3149477 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 54226 event pairs, 1029 based on Foata normal form. 10/7650 useless extension candidates. Maximal degree in co-relation 86986. Up to 6800 conditions per place. [2024-06-28 03:29:35,952 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 410 selfloop transitions, 86 changer transitions 0/611 dead transitions. [2024-06-28 03:29:35,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 611 transitions, 7599 flow [2024-06-28 03:29:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:29:35,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:29:35,954 INFO L175 Difference]: Start difference. First operand has 475 places, 599 transitions, 6571 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:29:35,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 611 transitions, 7599 flow [2024-06-28 03:29:43,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 611 transitions, 7417 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-28 03:29:43,314 INFO L231 Difference]: Finished difference. Result has 477 places, 599 transitions, 6567 flow [2024-06-28 03:29:43,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6389, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6567, PETRI_PLACES=477, PETRI_TRANSITIONS=599} [2024-06-28 03:29:43,314 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 432 predicate places. [2024-06-28 03:29:43,314 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 599 transitions, 6567 flow [2024-06-28 03:29:43,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:43,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:43,314 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 03:29:43,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:29:43,315 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:43,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:43,315 INFO L85 PathProgramCache]: Analyzing trace with hash 397838171, now seen corresponding path program 13 times [2024-06-28 03:29:43,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:43,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798926318] [2024-06-28 03:29:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:44,322 INFO 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 03:29:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798926318] [2024-06-28 03:29:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798926318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:44,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:44,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:29:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617757730] [2024-06-28 03:29:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:29:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:29:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:29:44,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:29:44,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 599 transitions, 6567 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:44,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:44,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:29:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:46,929 INFO L124 PetriNetUnfolderBase]: 4801/8051 cut-off events. [2024-06-28 03:29:46,930 INFO L125 PetriNetUnfolderBase]: For 3171448/3171457 co-relation queries the response was YES. [2024-06-28 03:29:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89624 conditions, 8051 events. 4801/8051 cut-off events. For 3171448/3171457 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 55817 event pairs, 1025 based on Foata normal form. 6/7979 useless extension candidates. Maximal degree in co-relation 89401. Up to 7201 conditions per place. [2024-06-28 03:29:47,067 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 508 selfloop transitions, 50 changer transitions 0/635 dead transitions. [2024-06-28 03:29:47,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 635 transitions, 7952 flow [2024-06-28 03:29:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:29:47,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 03:29:47,068 INFO L175 Difference]: Start difference. First operand has 477 places, 599 transitions, 6567 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:29:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 635 transitions, 7952 flow [2024-06-28 03:29:53,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 635 transitions, 7644 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 03:29:53,617 INFO L231 Difference]: Finished difference. Result has 481 places, 616 transitions, 6644 flow [2024-06-28 03:29:53,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6281, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6644, PETRI_PLACES=481, PETRI_TRANSITIONS=616} [2024-06-28 03:29:53,617 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 436 predicate places. [2024-06-28 03:29:53,617 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 616 transitions, 6644 flow [2024-06-28 03:29:53,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:53,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:29:53,617 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 03:29:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:29:53,617 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:29:53,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:29:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1422991121, now seen corresponding path program 1 times [2024-06-28 03:29:53,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:29:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503011223] [2024-06-28 03:29:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:29:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:29:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:29:54,662 INFO 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 03:29:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:29:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503011223] [2024-06-28 03:29:54,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503011223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:29:54,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:29:54,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:29:54,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989630503] [2024-06-28 03:29:54,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:29:54,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:29:54,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:29:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:29:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:29:54,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:29:54,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 616 transitions, 6644 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:29:54,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:29:54,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:29:54,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:29:57,336 INFO L124 PetriNetUnfolderBase]: 4883/8193 cut-off events. [2024-06-28 03:29:57,337 INFO L125 PetriNetUnfolderBase]: For 3192981/3192981 co-relation queries the response was YES. [2024-06-28 03:29:57,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90397 conditions, 8193 events. 4883/8193 cut-off events. For 3192981/3192981 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 56591 event pairs, 1051 based on Foata normal form. 1/8183 useless extension candidates. Maximal degree in co-relation 90170. Up to 7415 conditions per place. [2024-06-28 03:29:57,473 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 566 selfloop transitions, 35 changer transitions 0/641 dead transitions. [2024-06-28 03:29:57,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 641 transitions, 8052 flow [2024-06-28 03:29:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:29:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:29:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:29:57,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:29:57,474 INFO L175 Difference]: Start difference. First operand has 481 places, 616 transitions, 6644 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:29:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 641 transitions, 8052 flow [2024-06-28 03:30:05,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 641 transitions, 7934 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:05,170 INFO L231 Difference]: Finished difference. Result has 484 places, 619 transitions, 6738 flow [2024-06-28 03:30:05,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6526, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6738, PETRI_PLACES=484, PETRI_TRANSITIONS=619} [2024-06-28 03:30:05,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 439 predicate places. [2024-06-28 03:30:05,171 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 619 transitions, 6738 flow [2024-06-28 03:30:05,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:05,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:05,171 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 03:30:05,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:30:05,171 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:30:05,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash -809939603, now seen corresponding path program 1 times [2024-06-28 03:30:05,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:05,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475770754] [2024-06-28 03:30:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:06,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475770754] [2024-06-28 03:30:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475770754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:06,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:06,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:30:06,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410433991] [2024-06-28 03:30:06,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:06,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:30:06,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:30:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:30:06,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:30:06,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 619 transitions, 6738 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 03:30:06,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:06,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:30:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:09,111 INFO L124 PetriNetUnfolderBase]: 4977/8291 cut-off events. [2024-06-28 03:30:09,111 INFO L125 PetriNetUnfolderBase]: For 3241990/3241990 co-relation queries the response was YES. [2024-06-28 03:30:09,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91741 conditions, 8291 events. 4977/8291 cut-off events. For 3241990/3241990 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 56837 event pairs, 1081 based on Foata normal form. 2/8282 useless extension candidates. Maximal degree in co-relation 91513. Up to 7648 conditions per place. [2024-06-28 03:30:09,253 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 594 selfloop transitions, 38 changer transitions 0/643 dead transitions. [2024-06-28 03:30:09,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 643 transitions, 8166 flow [2024-06-28 03:30:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:30:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:30:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:30:09,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:30:09,254 INFO L175 Difference]: Start difference. First operand has 484 places, 619 transitions, 6738 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:30:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 643 transitions, 8166 flow Killed by 15