./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe028_power.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.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/safe028_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:11:06,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:11:06,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:11:06,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:11:06,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:11:06,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:11:06,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:11:06,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:11:06,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:11:06,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:11:06,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:11:06,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:11:06,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:11:06,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:11:06,642 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:11:06,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:11:06,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:11:06,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:11:06,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:11:06,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:11:06,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:11:06,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:11:06,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:11:06,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:11:06,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:11:06,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:11:06,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:11:06,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:11:06,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:11:06,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:11:06,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:11:06,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:11:06,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:11:06,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:11:06,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:11:06,649 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:11:06,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:11:06,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:11:06,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:11:06,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:11:06,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:11:06,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:11:06,874 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:11:06,876 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:11:06,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.yml/witness.yml [2024-06-28 02:11:07,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:11:07,076 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:11:07,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-28 02:11:08,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:11:08,325 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:11:08,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-28 02:11:08,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac509bbf/4bce9a3171944a55b55d01feb08ccb9f/FLAG6d426de5a [2024-06-28 02:11:08,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dac509bbf/4bce9a3171944a55b55d01feb08ccb9f [2024-06-28 02:11:08,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:11:08,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:11:08,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:11:08,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:11:08,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:11:08,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:11:07" (1/2) ... [2024-06-28 02:11:08,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be18ca2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:11:08, skipping insertion in model container [2024-06-28 02:11:08,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:11:07" (1/2) ... [2024-06-28 02:11:08,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42d945e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:11:08, skipping insertion in model container [2024-06-28 02:11:08,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:11:08" (2/2) ... [2024-06-28 02:11:08,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be18ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:08, skipping insertion in model container [2024-06-28 02:11:08,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:11:08" (2/2) ... [2024-06-28 02:11:08,363 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:11:08,498 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:11:08,498 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 02:11:08,499 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 02:11:08,499 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 02:11:08,499 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:11:08,499 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-28 02:11:08,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:11:08,690 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_power.i[990,1003] [2024-06-28 02:11:08,855 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:11:08,863 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:11:08,899 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_power.i[990,1003] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:11:09,007 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:11:09,038 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:11:09,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09 WrapperNode [2024-06-28 02:11:09,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:11:09,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:11:09,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:11:09,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:11:09,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,101 INFO L138 Inliner]: procedures = 175, calls = 89, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 247 [2024-06-28 02:11:09,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:11:09,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:11:09,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:11:09,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:11:09,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,136 INFO L175 MemorySlicer]: Split 48 memory accesses to 2 slices as follows [2, 46]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-28 02:11:09,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:11:09,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:11:09,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:11:09,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:11:09,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (1/1) ... [2024-06-28 02:11:09,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:11:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:11:09,213 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 02:11:09,227 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 02:11:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:11:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:11:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:11:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:11:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:11:09,254 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 02:11:09,423 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:11:09,425 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:11:09,904 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:11:09,904 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:11:10,237 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:11:10,237 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:11:10,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:11:10 BoogieIcfgContainer [2024-06-28 02:11:10,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:11:10,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:11:10,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:11:10,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:11:10,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:11:07" (1/4) ... [2024-06-28 02:11:10,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ab253c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:11:10, skipping insertion in model container [2024-06-28 02:11:10,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:11:08" (2/4) ... [2024-06-28 02:11:10,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ab253c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:11:10, skipping insertion in model container [2024-06-28 02:11:10,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:11:09" (3/4) ... [2024-06-28 02:11:10,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ab253c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:11:10, skipping insertion in model container [2024-06-28 02:11:10,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:11:10" (4/4) ... [2024-06-28 02:11:10,245 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2024-06-28 02:11:10,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:11:10,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:11:10,260 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:11:10,311 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:11:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:11:10,359 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 02:11:10,359 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:11:10,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 02:11:10,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 02:11:10,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 02:11:10,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:11:10,377 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;@4ef0ee23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:11:10,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:11:10,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:11:10,381 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:11:10,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:11:10,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:10,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:11:10,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:10,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash 868745296, now seen corresponding path program 1 times [2024-06-28 02:11:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:10,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400610641] [2024-06-28 02:11:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400610641] [2024-06-28 02:11:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400610641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:11:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830211091] [2024-06-28 02:11:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:11,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:11:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:11:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:11:11,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 02:11:11,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:11,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:11,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 02:11:11,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:12,970 INFO L124 PetriNetUnfolderBase]: 3758/6093 cut-off events. [2024-06-28 02:11:12,970 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 02:11:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11601 conditions, 6093 events. 3758/6093 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38208 event pairs, 2474 based on Foata normal form. 150/5635 useless extension candidates. Maximal degree in co-relation 11589. Up to 5417 conditions per place. [2024-06-28 02:11:13,002 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-28 02:11:13,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 243 flow [2024-06-28 02:11:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:11:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:11:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 02:11:13,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-28 02:11:13,013 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-28 02:11:13,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 243 flow [2024-06-28 02:11:13,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:11:13,017 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-28 02:11:13,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 02:11:13,022 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 02:11:13,022 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-28 02:11:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:13,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:13,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:13,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:11:13,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1640626447, now seen corresponding path program 1 times [2024-06-28 02:11:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655198545] [2024-06-28 02:11:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:14,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655198545] [2024-06-28 02:11:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655198545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:14,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:11:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484047677] [2024-06-28 02:11:14,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:11:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:11:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:11:14,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:11:14,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:14,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:14,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:11:14,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:15,266 INFO L124 PetriNetUnfolderBase]: 4502/7041 cut-off events. [2024-06-28 02:11:15,266 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-06-28 02:11:15,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15341 conditions, 7041 events. 4502/7041 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43383 event pairs, 2014 based on Foata normal form. 6/6546 useless extension candidates. Maximal degree in co-relation 15329. Up to 6401 conditions per place. [2024-06-28 02:11:15,302 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 61 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-28 02:11:15,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 362 flow [2024-06-28 02:11:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:11:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:11:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 02:11:15,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-28 02:11:15,304 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 4 states and 123 transitions. [2024-06-28 02:11:15,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 362 flow [2024-06-28 02:11:15,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:11:15,306 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 194 flow [2024-06-28 02:11:15,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-28 02:11:15,307 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 02:11:15,307 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 194 flow [2024-06-28 02:11:15,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:15,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:11:15,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:15,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash 366448629, now seen corresponding path program 1 times [2024-06-28 02:11:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721803335] [2024-06-28 02:11:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:15,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:15,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721803335] [2024-06-28 02:11:15,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721803335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:15,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:11:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413618007] [2024-06-28 02:11:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:15,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:11:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:11:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:11:15,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 02:11:15,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:15,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:15,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 02:11:15,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:15,859 INFO L124 PetriNetUnfolderBase]: 1657/2960 cut-off events. [2024-06-28 02:11:15,860 INFO L125 PetriNetUnfolderBase]: For 1384/1405 co-relation queries the response was YES. [2024-06-28 02:11:15,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6777 conditions, 2960 events. 1657/2960 cut-off events. For 1384/1405 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19322 event pairs, 930 based on Foata normal form. 18/2812 useless extension candidates. Maximal degree in co-relation 6763. Up to 1960 conditions per place. [2024-06-28 02:11:15,877 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 50 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-06-28 02:11:15,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 339 flow [2024-06-28 02:11:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:11:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:11:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 02:11:15,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-28 02:11:15,879 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 194 flow. Second operand 3 states and 100 transitions. [2024-06-28 02:11:15,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 339 flow [2024-06-28 02:11:15,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 320 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:15,881 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 164 flow [2024-06-28 02:11:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 02:11:15,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 02:11:15,882 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 164 flow [2024-06-28 02:11:15,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:15,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:15,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:11:15,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:15,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1277618483, now seen corresponding path program 1 times [2024-06-28 02:11:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412034799] [2024-06-28 02:11:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412034799] [2024-06-28 02:11:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412034799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:11:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351552553] [2024-06-28 02:11:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:11:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:11:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:11:17,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:11:17,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:17,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:17,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:11:17,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:18,989 INFO L124 PetriNetUnfolderBase]: 3694/5812 cut-off events. [2024-06-28 02:11:18,990 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2024-06-28 02:11:18,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 5812 events. 3694/5812 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 34783 event pairs, 1299 based on Foata normal form. 6/5666 useless extension candidates. Maximal degree in co-relation 13879. Up to 5208 conditions per place. [2024-06-28 02:11:19,015 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 80 selfloop transitions, 16 changer transitions 1/106 dead transitions. [2024-06-28 02:11:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 106 transitions, 500 flow [2024-06-28 02:11:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-28 02:11:19,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-06-28 02:11:19,018 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 164 flow. Second operand 6 states and 172 transitions. [2024-06-28 02:11:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 106 transitions, 500 flow [2024-06-28 02:11:19,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:19,020 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 233 flow [2024-06-28 02:11:19,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-28 02:11:19,021 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-28 02:11:19,021 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 233 flow [2024-06-28 02:11:19,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:19,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:19,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:19,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:11:19,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:19,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -30426251, now seen corresponding path program 1 times [2024-06-28 02:11:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:19,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203427772] [2024-06-28 02:11:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:20,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203427772] [2024-06-28 02:11:20,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203427772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:20,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:20,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:11:20,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959442030] [2024-06-28 02:11:20,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:20,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:11:20,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:11:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:11:20,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:11:20,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:20,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:20,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:11:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:21,154 INFO L124 PetriNetUnfolderBase]: 2767/4560 cut-off events. [2024-06-28 02:11:21,155 INFO L125 PetriNetUnfolderBase]: For 3678/3678 co-relation queries the response was YES. [2024-06-28 02:11:21,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11642 conditions, 4560 events. 2767/4560 cut-off events. For 3678/3678 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 27561 event pairs, 1193 based on Foata normal form. 2/4435 useless extension candidates. Maximal degree in co-relation 11625. Up to 3996 conditions per place. [2024-06-28 02:11:21,177 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 65 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-28 02:11:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 489 flow [2024-06-28 02:11:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 02:11:21,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 02:11:21,179 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 233 flow. Second operand 6 states and 136 transitions. [2024-06-28 02:11:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 489 flow [2024-06-28 02:11:21,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 443 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:11:21,182 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 302 flow [2024-06-28 02:11:21,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-28 02:11:21,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 02:11:21,183 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 302 flow [2024-06-28 02:11:21,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:21,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:21,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:11:21,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:21,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash -943211654, now seen corresponding path program 1 times [2024-06-28 02:11:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379714505] [2024-06-28 02:11:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379714505] [2024-06-28 02:11:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379714505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:22,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:22,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63356803] [2024-06-28 02:11:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:22,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:22,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:22,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:11:22,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:22,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:22,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:11:22,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:23,915 INFO L124 PetriNetUnfolderBase]: 2762/4570 cut-off events. [2024-06-28 02:11:23,915 INFO L125 PetriNetUnfolderBase]: For 5398/5398 co-relation queries the response was YES. [2024-06-28 02:11:23,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12617 conditions, 4570 events. 2762/4570 cut-off events. For 5398/5398 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27846 event pairs, 1150 based on Foata normal form. 2/4445 useless extension candidates. Maximal degree in co-relation 12596. Up to 3967 conditions per place. [2024-06-28 02:11:23,936 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 72 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-06-28 02:11:23,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 618 flow [2024-06-28 02:11:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 02:11:23,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-28 02:11:23,938 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 302 flow. Second operand 6 states and 149 transitions. [2024-06-28 02:11:23,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 618 flow [2024-06-28 02:11:23,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 602 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 02:11:23,942 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 418 flow [2024-06-28 02:11:23,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 02:11:23,943 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 02:11:23,943 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 418 flow [2024-06-28 02:11:23,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:23,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:23,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:23,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:11:23,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:23,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1076073256, now seen corresponding path program 1 times [2024-06-28 02:11:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997161674] [2024-06-28 02:11:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:25,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997161674] [2024-06-28 02:11:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997161674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037474407] [2024-06-28 02:11:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:25,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:25,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:25,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:25,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:25,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:26,411 INFO L124 PetriNetUnfolderBase]: 3374/5375 cut-off events. [2024-06-28 02:11:26,411 INFO L125 PetriNetUnfolderBase]: For 9851/9851 co-relation queries the response was YES. [2024-06-28 02:11:26,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 5375 events. 3374/5375 cut-off events. For 9851/9851 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32020 event pairs, 1358 based on Foata normal form. 4/5227 useless extension candidates. Maximal degree in co-relation 16400. Up to 4802 conditions per place. [2024-06-28 02:11:26,440 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 92 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2024-06-28 02:11:26,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 767 flow [2024-06-28 02:11:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:11:26,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:11:26,442 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 418 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:11:26,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 767 flow [2024-06-28 02:11:26,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 115 transitions, 722 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:26,449 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 487 flow [2024-06-28 02:11:26,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 02:11:26,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 02:11:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 487 flow [2024-06-28 02:11:26,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:26,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:26,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:11:26,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash 825202036, now seen corresponding path program 2 times [2024-06-28 02:11:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132698815] [2024-06-28 02:11:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132698815] [2024-06-28 02:11:27,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132698815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:11:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381239276] [2024-06-28 02:11:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:11:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:11:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:11:27,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:27,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 487 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:27,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:27,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:27,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:28,809 INFO L124 PetriNetUnfolderBase]: 3398/5411 cut-off events. [2024-06-28 02:11:28,810 INFO L125 PetriNetUnfolderBase]: For 13869/13869 co-relation queries the response was YES. [2024-06-28 02:11:28,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17899 conditions, 5411 events. 3398/5411 cut-off events. For 13869/13869 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32313 event pairs, 1325 based on Foata normal form. 4/5261 useless extension candidates. Maximal degree in co-relation 17871. Up to 4779 conditions per place. [2024-06-28 02:11:28,867 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 89 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-28 02:11:28,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 118 transitions, 835 flow [2024-06-28 02:11:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:11:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:11:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:11:28,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:11:28,886 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 487 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:11:28,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 118 transitions, 835 flow [2024-06-28 02:11:28,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 788 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:11:28,893 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 541 flow [2024-06-28 02:11:28,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-28 02:11:28,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 02:11:28,894 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 541 flow [2024-06-28 02:11:28,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:28,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:28,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:11:28,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:28,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1074562626, now seen corresponding path program 1 times [2024-06-28 02:11:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892170288] [2024-06-28 02:11:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892170288] [2024-06-28 02:11:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892170288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770566750] [2024-06-28 02:11:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:31,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:31,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:11:31,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:31,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:31,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:11:31,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:32,302 INFO L124 PetriNetUnfolderBase]: 2838/4704 cut-off events. [2024-06-28 02:11:32,302 INFO L125 PetriNetUnfolderBase]: For 15239/15239 co-relation queries the response was YES. [2024-06-28 02:11:32,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16350 conditions, 4704 events. 2838/4704 cut-off events. For 15239/15239 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 28744 event pairs, 1044 based on Foata normal form. 4/4581 useless extension candidates. Maximal degree in co-relation 16321. Up to 4036 conditions per place. [2024-06-28 02:11:32,325 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 105 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-06-28 02:11:32,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 132 transitions, 947 flow [2024-06-28 02:11:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:11:32,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 02:11:32,327 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 541 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:11:32,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 132 transitions, 947 flow [2024-06-28 02:11:32,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 876 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:32,335 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 593 flow [2024-06-28 02:11:32,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=593, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-28 02:11:32,336 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 02:11:32,336 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 593 flow [2024-06-28 02:11:32,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:32,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:32,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:32,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:11:32,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:32,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash -396114533, now seen corresponding path program 1 times [2024-06-28 02:11:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940449444] [2024-06-28 02:11:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:34,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940449444] [2024-06-28 02:11:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940449444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:34,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:34,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127706183] [2024-06-28 02:11:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:34,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:34,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:34,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:34,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 593 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:34,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:34,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:34,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:35,419 INFO L124 PetriNetUnfolderBase]: 3427/5457 cut-off events. [2024-06-28 02:11:35,419 INFO L125 PetriNetUnfolderBase]: For 21382/21382 co-relation queries the response was YES. [2024-06-28 02:11:35,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19668 conditions, 5457 events. 3427/5457 cut-off events. For 21382/21382 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32500 event pairs, 1298 based on Foata normal form. 2/5307 useless extension candidates. Maximal degree in co-relation 19637. Up to 4869 conditions per place. [2024-06-28 02:11:35,450 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 109 selfloop transitions, 28 changer transitions 0/145 dead transitions. [2024-06-28 02:11:35,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 145 transitions, 1077 flow [2024-06-28 02:11:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:11:35,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 02:11:35,452 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 593 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:11:35,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 145 transitions, 1077 flow [2024-06-28 02:11:35,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 145 transitions, 1016 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:35,463 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 729 flow [2024-06-28 02:11:35,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-06-28 02:11:35,464 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 02:11:35,464 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 729 flow [2024-06-28 02:11:35,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:35,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:35,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:11:35,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:35,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash -188538533, now seen corresponding path program 2 times [2024-06-28 02:11:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509800646] [2024-06-28 02:11:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:37,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:37,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509800646] [2024-06-28 02:11:37,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509800646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:37,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:37,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428601115] [2024-06-28 02:11:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:37,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:37,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:37,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:37,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:37,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:38,533 INFO L124 PetriNetUnfolderBase]: 3479/5532 cut-off events. [2024-06-28 02:11:38,534 INFO L125 PetriNetUnfolderBase]: For 27415/27415 co-relation queries the response was YES. [2024-06-28 02:11:38,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21275 conditions, 5532 events. 3479/5532 cut-off events. For 27415/27415 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32971 event pairs, 1265 based on Foata normal form. 4/5381 useless extension candidates. Maximal degree in co-relation 21242. Up to 4852 conditions per place. [2024-06-28 02:11:38,583 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 113 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-28 02:11:38,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 1188 flow [2024-06-28 02:11:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:11:38,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 02:11:38,603 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 729 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:11:38,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 1188 flow [2024-06-28 02:11:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 1077 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:38,624 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 760 flow [2024-06-28 02:11:38,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=760, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-28 02:11:38,625 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-28 02:11:38,625 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 760 flow [2024-06-28 02:11:38,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:38,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:38,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:38,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:11:38,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:38,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash -188241863, now seen corresponding path program 3 times [2024-06-28 02:11:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:38,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263751132] [2024-06-28 02:11:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263751132] [2024-06-28 02:11:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263751132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:40,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930902571] [2024-06-28 02:11:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:40,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:40,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:40,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:40,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:40,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:40,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:41,941 INFO L124 PetriNetUnfolderBase]: 3514/5580 cut-off events. [2024-06-28 02:11:41,941 INFO L125 PetriNetUnfolderBase]: For 32931/32931 co-relation queries the response was YES. [2024-06-28 02:11:41,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22711 conditions, 5580 events. 3514/5580 cut-off events. For 32931/32931 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 33333 event pairs, 1148 based on Foata normal form. 2/5424 useless extension candidates. Maximal degree in co-relation 22677. Up to 4765 conditions per place. [2024-06-28 02:11:41,969 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 123 selfloop transitions, 52 changer transitions 0/183 dead transitions. [2024-06-28 02:11:41,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 183 transitions, 1561 flow [2024-06-28 02:11:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:11:41,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-28 02:11:41,971 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 760 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:11:41,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 183 transitions, 1561 flow [2024-06-28 02:11:41,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 183 transitions, 1461 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:11:41,987 INFO L231 Difference]: Finished difference. Result has 95 places, 129 transitions, 1078 flow [2024-06-28 02:11:41,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1078, PETRI_PLACES=95, PETRI_TRANSITIONS=129} [2024-06-28 02:11:41,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 02:11:41,988 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 129 transitions, 1078 flow [2024-06-28 02:11:41,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:41,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:41,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:41,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:11:41,989 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:41,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1763026121, now seen corresponding path program 1 times [2024-06-28 02:11:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678108136] [2024-06-28 02:11:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678108136] [2024-06-28 02:11:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678108136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:43,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:43,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:11:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571741670] [2024-06-28 02:11:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:11:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:11:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:11:43,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:43,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 129 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:43,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:43,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:43,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:45,232 INFO L124 PetriNetUnfolderBase]: 3509/5588 cut-off events. [2024-06-28 02:11:45,232 INFO L125 PetriNetUnfolderBase]: For 40709/40709 co-relation queries the response was YES. [2024-06-28 02:11:45,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24639 conditions, 5588 events. 3509/5588 cut-off events. For 40709/40709 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 33253 event pairs, 1202 based on Foata normal form. 2/5438 useless extension candidates. Maximal degree in co-relation 24601. Up to 4981 conditions per place. [2024-06-28 02:11:45,283 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 146 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-28 02:11:45,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 173 transitions, 1520 flow [2024-06-28 02:11:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:11:45,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 02:11:45,285 INFO L175 Difference]: Start difference. First operand has 95 places, 129 transitions, 1078 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:11:45,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 173 transitions, 1520 flow [2024-06-28 02:11:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 173 transitions, 1439 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:45,341 INFO L231 Difference]: Finished difference. Result has 100 places, 129 transitions, 1044 flow [2024-06-28 02:11:45,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1044, PETRI_PLACES=100, PETRI_TRANSITIONS=129} [2024-06-28 02:11:45,342 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 02:11:45,342 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 129 transitions, 1044 flow [2024-06-28 02:11:45,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:45,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:45,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:45,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:11:45,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:45,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1596567011, now seen corresponding path program 1 times [2024-06-28 02:11:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:45,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983457182] [2024-06-28 02:11:45,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:47,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983457182] [2024-06-28 02:11:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983457182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:11:47,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929963143] [2024-06-28 02:11:47,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:47,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:11:47,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:47,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:11:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:11:47,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:47,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 129 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:47,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:47,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:47,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:48,864 INFO L124 PetriNetUnfolderBase]: 3551/5650 cut-off events. [2024-06-28 02:11:48,864 INFO L125 PetriNetUnfolderBase]: For 43170/43170 co-relation queries the response was YES. [2024-06-28 02:11:48,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25096 conditions, 5650 events. 3551/5650 cut-off events. For 43170/43170 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 33661 event pairs, 1186 based on Foata normal form. 4/5502 useless extension candidates. Maximal degree in co-relation 25055. Up to 5005 conditions per place. [2024-06-28 02:11:48,898 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 35 changer transitions 0/183 dead transitions. [2024-06-28 02:11:48,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 183 transitions, 1586 flow [2024-06-28 02:11:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:11:48,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:11:48,900 INFO L175 Difference]: Start difference. First operand has 100 places, 129 transitions, 1044 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:11:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 183 transitions, 1586 flow [2024-06-28 02:11:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 1499 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:48,922 INFO L231 Difference]: Finished difference. Result has 102 places, 132 transitions, 1098 flow [2024-06-28 02:11:48,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=102, PETRI_TRANSITIONS=132} [2024-06-28 02:11:48,922 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 02:11:48,923 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 132 transitions, 1098 flow [2024-06-28 02:11:48,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:48,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:48,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:11:48,923 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:48,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1549725069, now seen corresponding path program 2 times [2024-06-28 02:11:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657810534] [2024-06-28 02:11:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:51,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657810534] [2024-06-28 02:11:51,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657810534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:51,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:51,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:11:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533651896] [2024-06-28 02:11:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:11:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:11:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:11:51,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:51,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 132 transitions, 1098 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:51,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:51,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:51,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:52,685 INFO L124 PetriNetUnfolderBase]: 3783/5997 cut-off events. [2024-06-28 02:11:52,686 INFO L125 PetriNetUnfolderBase]: For 56326/56326 co-relation queries the response was YES. [2024-06-28 02:11:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27952 conditions, 5997 events. 3783/5997 cut-off events. For 56326/56326 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 35830 event pairs, 1178 based on Foata normal form. 24/5867 useless extension candidates. Maximal degree in co-relation 27911. Up to 5019 conditions per place. [2024-06-28 02:11:52,723 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 150 selfloop transitions, 32 changer transitions 0/190 dead transitions. [2024-06-28 02:11:52,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 190 transitions, 1715 flow [2024-06-28 02:11:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:11:52,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:11:52,725 INFO L175 Difference]: Start difference. First operand has 102 places, 132 transitions, 1098 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:11:52,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 190 transitions, 1715 flow [2024-06-28 02:11:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 190 transitions, 1598 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:52,754 INFO L231 Difference]: Finished difference. Result has 104 places, 135 transitions, 1125 flow [2024-06-28 02:11:52,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1125, PETRI_PLACES=104, PETRI_TRANSITIONS=135} [2024-06-28 02:11:52,755 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 02:11:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 135 transitions, 1125 flow [2024-06-28 02:11:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:52,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:11:52,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:52,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1540528299, now seen corresponding path program 3 times [2024-06-28 02:11:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429002088] [2024-06-28 02:11:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:54,642 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 02:11:54,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429002088] [2024-06-28 02:11:54,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429002088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:54,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:54,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:11:54,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407227232] [2024-06-28 02:11:54,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:54,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:11:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:54,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:11:54,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:11:54,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:54,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 135 transitions, 1125 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:54,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:54,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:56,118 INFO L124 PetriNetUnfolderBase]: 3828/6073 cut-off events. [2024-06-28 02:11:56,118 INFO L125 PetriNetUnfolderBase]: For 63595/63595 co-relation queries the response was YES. [2024-06-28 02:11:56,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29194 conditions, 6073 events. 3828/6073 cut-off events. For 63595/63595 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 36425 event pairs, 1188 based on Foata normal form. 4/5922 useless extension candidates. Maximal degree in co-relation 29152. Up to 5324 conditions per place. [2024-06-28 02:11:56,155 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 128 selfloop transitions, 69 changer transitions 0/205 dead transitions. [2024-06-28 02:11:56,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 205 transitions, 2013 flow [2024-06-28 02:11:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:11:56,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:11:56,157 INFO L175 Difference]: Start difference. First operand has 104 places, 135 transitions, 1125 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:11:56,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 205 transitions, 2013 flow [2024-06-28 02:11:56,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 205 transitions, 1914 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:56,206 INFO L231 Difference]: Finished difference. Result has 108 places, 156 transitions, 1607 flow [2024-06-28 02:11:56,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1607, PETRI_PLACES=108, PETRI_TRANSITIONS=156} [2024-06-28 02:11:56,207 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 02:11:56,207 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 156 transitions, 1607 flow [2024-06-28 02:11:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:56,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:56,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:11:56,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:56,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1540201869, now seen corresponding path program 4 times [2024-06-28 02:11:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:56,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21144235] [2024-06-28 02:11:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:58,178 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 02:11:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:58,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21144235] [2024-06-28 02:11:58,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21144235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:58,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:58,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:11:58,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256514390] [2024-06-28 02:11:58,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:58,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:11:58,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:11:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:11:58,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:11:58,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 156 transitions, 1607 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:58,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:58,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:11:58,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:59,839 INFO L124 PetriNetUnfolderBase]: 3825/6078 cut-off events. [2024-06-28 02:11:59,839 INFO L125 PetriNetUnfolderBase]: For 68136/68136 co-relation queries the response was YES. [2024-06-28 02:11:59,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30112 conditions, 6078 events. 3825/6078 cut-off events. For 68136/68136 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36567 event pairs, 1082 based on Foata normal form. 4/5927 useless extension candidates. Maximal degree in co-relation 30067. Up to 5150 conditions per place. [2024-06-28 02:11:59,874 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 124 selfloop transitions, 83 changer transitions 0/215 dead transitions. [2024-06-28 02:11:59,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 215 transitions, 2349 flow [2024-06-28 02:11:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:11:59,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:11:59,878 INFO L175 Difference]: Start difference. First operand has 108 places, 156 transitions, 1607 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:11:59,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 215 transitions, 2349 flow [2024-06-28 02:11:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 215 transitions, 2124 flow, removed 105 selfloop flow, removed 2 redundant places. [2024-06-28 02:11:59,937 INFO L231 Difference]: Finished difference. Result has 115 places, 165 transitions, 1783 flow [2024-06-28 02:11:59,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1783, PETRI_PLACES=115, PETRI_TRANSITIONS=165} [2024-06-28 02:11:59,938 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 02:11:59,938 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 165 transitions, 1783 flow [2024-06-28 02:11:59,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:59,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:59,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:11:59,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:11:59,939 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:11:59,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -465024842, now seen corresponding path program 1 times [2024-06-28 02:11:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:59,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135916314] [2024-06-28 02:11:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:01,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135916314] [2024-06-28 02:12:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135916314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:01,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:01,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224137333] [2024-06-28 02:12:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:01,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:12:01,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 165 transitions, 1783 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:01,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:01,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:12:01,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:02,644 INFO L124 PetriNetUnfolderBase]: 3259/5352 cut-off events. [2024-06-28 02:12:02,645 INFO L125 PetriNetUnfolderBase]: For 61904/61904 co-relation queries the response was YES. [2024-06-28 02:12:02,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27166 conditions, 5352 events. 3259/5352 cut-off events. For 61904/61904 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 32614 event pairs, 1014 based on Foata normal form. 2/5227 useless extension candidates. Maximal degree in co-relation 27118. Up to 4698 conditions per place. [2024-06-28 02:12:02,688 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 167 selfloop transitions, 15 changer transitions 0/191 dead transitions. [2024-06-28 02:12:02,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 2301 flow [2024-06-28 02:12:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 02:12:02,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 02:12:02,690 INFO L175 Difference]: Start difference. First operand has 115 places, 165 transitions, 1783 flow. Second operand 5 states and 122 transitions. [2024-06-28 02:12:02,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 2301 flow [2024-06-28 02:12:02,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 191 transitions, 2080 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:02,773 INFO L231 Difference]: Finished difference. Result has 117 places, 171 transitions, 1693 flow [2024-06-28 02:12:02,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1693, PETRI_PLACES=117, PETRI_TRANSITIONS=171} [2024-06-28 02:12:02,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-28 02:12:02,774 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 171 transitions, 1693 flow [2024-06-28 02:12:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:02,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:02,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:02,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:12:02,775 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:02,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2052703190, now seen corresponding path program 1 times [2024-06-28 02:12:02,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:02,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11529963] [2024-06-28 02:12:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:02,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11529963] [2024-06-28 02:12:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11529963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:04,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602220748] [2024-06-28 02:12:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:04,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:04,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 171 transitions, 1693 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:04,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:04,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:04,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:06,672 INFO L124 PetriNetUnfolderBase]: 3851/6111 cut-off events. [2024-06-28 02:12:06,673 INFO L125 PetriNetUnfolderBase]: For 74674/74674 co-relation queries the response was YES. [2024-06-28 02:12:06,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31775 conditions, 6111 events. 3851/6111 cut-off events. For 74674/74674 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36567 event pairs, 1237 based on Foata normal form. 2/5961 useless extension candidates. Maximal degree in co-relation 31724. Up to 5470 conditions per place. [2024-06-28 02:12:06,720 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 197 selfloop transitions, 35 changer transitions 0/240 dead transitions. [2024-06-28 02:12:06,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 240 transitions, 2575 flow [2024-06-28 02:12:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:12:06,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 02:12:06,722 INFO L175 Difference]: Start difference. First operand has 117 places, 171 transitions, 1693 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:12:06,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 240 transitions, 2575 flow [2024-06-28 02:12:06,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 240 transitions, 2543 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:06,798 INFO L231 Difference]: Finished difference. Result has 127 places, 187 transitions, 2066 flow [2024-06-28 02:12:06,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2066, PETRI_PLACES=127, PETRI_TRANSITIONS=187} [2024-06-28 02:12:06,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 02:12:06,799 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 187 transitions, 2066 flow [2024-06-28 02:12:06,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:06,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:06,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:12:06,800 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:06,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash -592596260, now seen corresponding path program 2 times [2024-06-28 02:12:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:06,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679273835] [2024-06-28 02:12:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679273835] [2024-06-28 02:12:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679273835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:09,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64502020] [2024-06-28 02:12:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:09,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:09,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:09,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 187 transitions, 2066 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:09,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:09,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:09,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:11,044 INFO L124 PetriNetUnfolderBase]: 3846/6105 cut-off events. [2024-06-28 02:12:11,044 INFO L125 PetriNetUnfolderBase]: For 84688/84688 co-relation queries the response was YES. [2024-06-28 02:12:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33165 conditions, 6105 events. 3846/6105 cut-off events. For 84688/84688 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 36598 event pairs, 1235 based on Foata normal form. 2/5955 useless extension candidates. Maximal degree in co-relation 33109. Up to 5429 conditions per place. [2024-06-28 02:12:11,096 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 200 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2024-06-28 02:12:11,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 238 transitions, 2669 flow [2024-06-28 02:12:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:12:11,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:12:11,098 INFO L175 Difference]: Start difference. First operand has 127 places, 187 transitions, 2066 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:12:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 238 transitions, 2669 flow [2024-06-28 02:12:11,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 238 transitions, 2398 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:11,199 INFO L231 Difference]: Finished difference. Result has 132 places, 188 transitions, 1885 flow [2024-06-28 02:12:11,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1885, PETRI_PLACES=132, PETRI_TRANSITIONS=188} [2024-06-28 02:12:11,200 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 02:12:11,200 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 188 transitions, 1885 flow [2024-06-28 02:12:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:11,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:11,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:12:11,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:11,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -447574850, now seen corresponding path program 3 times [2024-06-28 02:12:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446929178] [2024-06-28 02:12:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:13,780 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 02:12:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446929178] [2024-06-28 02:12:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446929178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:13,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:13,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843625274] [2024-06-28 02:12:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:13,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:13,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:13,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 188 transitions, 1885 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:13,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:13,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:13,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:15,673 INFO L124 PetriNetUnfolderBase]: 3872/6151 cut-off events. [2024-06-28 02:12:15,673 INFO L125 PetriNetUnfolderBase]: For 87446/87446 co-relation queries the response was YES. [2024-06-28 02:12:15,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33548 conditions, 6151 events. 3872/6151 cut-off events. For 87446/87446 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 36929 event pairs, 1230 based on Foata normal form. 2/6001 useless extension candidates. Maximal degree in co-relation 33489. Up to 5408 conditions per place. [2024-06-28 02:12:15,718 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 201 selfloop transitions, 42 changer transitions 0/251 dead transitions. [2024-06-28 02:12:15,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 251 transitions, 2629 flow [2024-06-28 02:12:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:12:15,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 02:12:15,720 INFO L175 Difference]: Start difference. First operand has 132 places, 188 transitions, 1885 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:12:15,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 251 transitions, 2629 flow [2024-06-28 02:12:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 251 transitions, 2563 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:15,800 INFO L231 Difference]: Finished difference. Result has 137 places, 192 transitions, 2018 flow [2024-06-28 02:12:15,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2018, PETRI_PLACES=137, PETRI_TRANSITIONS=192} [2024-06-28 02:12:15,801 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-28 02:12:15,801 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 192 transitions, 2018 flow [2024-06-28 02:12:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:15,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:15,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:12:15,802 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:15,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1895611434, now seen corresponding path program 4 times [2024-06-28 02:12:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:15,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44643639] [2024-06-28 02:12:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:17,979 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 02:12:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44643639] [2024-06-28 02:12:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44643639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51069079] [2024-06-28 02:12:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:17,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:17,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 192 transitions, 2018 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:19,657 INFO L124 PetriNetUnfolderBase]: 3898/6030 cut-off events. [2024-06-28 02:12:19,657 INFO L125 PetriNetUnfolderBase]: For 98554/98554 co-relation queries the response was YES. [2024-06-28 02:12:19,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34792 conditions, 6030 events. 3898/6030 cut-off events. For 98554/98554 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35533 event pairs, 1173 based on Foata normal form. 2/5924 useless extension candidates. Maximal degree in co-relation 34732. Up to 5251 conditions per place. [2024-06-28 02:12:19,713 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 129 selfloop transitions, 117 changer transitions 0/254 dead transitions. [2024-06-28 02:12:19,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 254 transitions, 3044 flow [2024-06-28 02:12:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:12:19,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:19,715 INFO L175 Difference]: Start difference. First operand has 137 places, 192 transitions, 2018 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:12:19,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 254 transitions, 3044 flow [2024-06-28 02:12:19,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 254 transitions, 2846 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:19,828 INFO L231 Difference]: Finished difference. Result has 139 places, 204 transitions, 2437 flow [2024-06-28 02:12:19,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2437, PETRI_PLACES=139, PETRI_TRANSITIONS=204} [2024-06-28 02:12:19,829 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-28 02:12:19,829 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 204 transitions, 2437 flow [2024-06-28 02:12:19,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:19,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:19,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:19,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:12:19,830 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:19,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash -797074262, now seen corresponding path program 5 times [2024-06-28 02:12:19,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363549437] [2024-06-28 02:12:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:19,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363549437] [2024-06-28 02:12:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363549437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:21,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104947992] [2024-06-28 02:12:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:22,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:22,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 204 transitions, 2437 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:22,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:22,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:22,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:23,695 INFO L124 PetriNetUnfolderBase]: 3902/6039 cut-off events. [2024-06-28 02:12:23,695 INFO L125 PetriNetUnfolderBase]: For 102892/102892 co-relation queries the response was YES. [2024-06-28 02:12:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35489 conditions, 6039 events. 3902/6039 cut-off events. For 102892/102892 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35677 event pairs, 1171 based on Foata normal form. 2/5933 useless extension candidates. Maximal degree in co-relation 35427. Up to 5397 conditions per place. [2024-06-28 02:12:23,754 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 169 selfloop transitions, 87 changer transitions 0/264 dead transitions. [2024-06-28 02:12:23,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 264 transitions, 3415 flow [2024-06-28 02:12:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:12:23,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 02:12:23,756 INFO L175 Difference]: Start difference. First operand has 139 places, 204 transitions, 2437 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:12:23,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 264 transitions, 3415 flow [2024-06-28 02:12:23,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 264 transitions, 3063 flow, removed 159 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:23,930 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2609 flow [2024-06-28 02:12:23,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2609, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2024-06-28 02:12:23,931 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-28 02:12:23,931 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2609 flow [2024-06-28 02:12:23,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:23,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:23,931 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 02:12:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:12:23,931 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:23,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1989245430, now seen corresponding path program 1 times [2024-06-28 02:12:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675893435] [2024-06-28 02:12:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675893435] [2024-06-28 02:12:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675893435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50289966] [2024-06-28 02:12:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:25,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:25,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2609 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:25,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:25,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:25,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:27,889 INFO L124 PetriNetUnfolderBase]: 3949/6150 cut-off events. [2024-06-28 02:12:27,890 INFO L125 PetriNetUnfolderBase]: For 96732/96732 co-relation queries the response was YES. [2024-06-28 02:12:27,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34677 conditions, 6150 events. 3949/6150 cut-off events. For 96732/96732 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36251 event pairs, 849 based on Foata normal form. 4/6042 useless extension candidates. Maximal degree in co-relation 34613. Up to 5543 conditions per place. [2024-06-28 02:12:27,941 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 234 selfloop transitions, 35 changer transitions 0/277 dead transitions. [2024-06-28 02:12:27,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 277 transitions, 3381 flow [2024-06-28 02:12:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:12:27,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:27,943 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2609 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:12:27,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 277 transitions, 3381 flow [2024-06-28 02:12:28,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 277 transitions, 3142 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:28,044 INFO L231 Difference]: Finished difference. Result has 148 places, 223 transitions, 2569 flow [2024-06-28 02:12:28,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2569, PETRI_PLACES=148, PETRI_TRANSITIONS=223} [2024-06-28 02:12:28,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 02:12:28,045 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 223 transitions, 2569 flow [2024-06-28 02:12:28,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:28,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:28,045 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 02:12:28,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:12:28,045 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:28,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1306803570, now seen corresponding path program 2 times [2024-06-28 02:12:28,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:28,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603929310] [2024-06-28 02:12:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603929310] [2024-06-28 02:12:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603929310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:30,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869585175] [2024-06-28 02:12:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:30,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:30,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 223 transitions, 2569 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:32,034 INFO L124 PetriNetUnfolderBase]: 3991/6210 cut-off events. [2024-06-28 02:12:32,034 INFO L125 PetriNetUnfolderBase]: For 106050/106050 co-relation queries the response was YES. [2024-06-28 02:12:32,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35952 conditions, 6210 events. 3991/6210 cut-off events. For 106050/106050 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 36673 event pairs, 1134 based on Foata normal form. 4/6102 useless extension candidates. Maximal degree in co-relation 35887. Up to 5655 conditions per place. [2024-06-28 02:12:32,085 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 250 selfloop transitions, 22 changer transitions 0/280 dead transitions. [2024-06-28 02:12:32,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 280 transitions, 3343 flow [2024-06-28 02:12:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:12:32,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 02:12:32,087 INFO L175 Difference]: Start difference. First operand has 148 places, 223 transitions, 2569 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:12:32,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 280 transitions, 3343 flow [2024-06-28 02:12:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 280 transitions, 3204 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:32,210 INFO L231 Difference]: Finished difference. Result has 151 places, 226 transitions, 2574 flow [2024-06-28 02:12:32,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2574, PETRI_PLACES=151, PETRI_TRANSITIONS=226} [2024-06-28 02:12:32,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 02:12:32,210 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 226 transitions, 2574 flow [2024-06-28 02:12:32,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:32,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:32,211 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 02:12:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:12:32,212 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:32,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1306797618, now seen corresponding path program 1 times [2024-06-28 02:12:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114166453] [2024-06-28 02:12:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:34,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114166453] [2024-06-28 02:12:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114166453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:34,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:34,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:34,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677390534] [2024-06-28 02:12:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:34,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:34,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:34,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:34,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 226 transitions, 2574 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:34,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:34,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:34,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:36,819 INFO L124 PetriNetUnfolderBase]: 4309/6714 cut-off events. [2024-06-28 02:12:36,819 INFO L125 PetriNetUnfolderBase]: For 131139/131139 co-relation queries the response was YES. [2024-06-28 02:12:36,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40269 conditions, 6714 events. 4309/6714 cut-off events. For 131139/131139 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 40000 event pairs, 1154 based on Foata normal form. 16/6604 useless extension candidates. Maximal degree in co-relation 40203. Up to 5841 conditions per place. [2024-06-28 02:12:36,878 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 259 selfloop transitions, 74 changer transitions 0/341 dead transitions. [2024-06-28 02:12:36,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 341 transitions, 4223 flow [2024-06-28 02:12:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:12:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:12:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 02:12:36,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-06-28 02:12:36,880 INFO L175 Difference]: Start difference. First operand has 151 places, 226 transitions, 2574 flow. Second operand 10 states and 239 transitions. [2024-06-28 02:12:36,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 341 transitions, 4223 flow [2024-06-28 02:12:37,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 341 transitions, 3993 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:37,019 INFO L231 Difference]: Finished difference. Result has 159 places, 274 transitions, 3359 flow [2024-06-28 02:12:37,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=159, PETRI_TRANSITIONS=274} [2024-06-28 02:12:37,020 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 02:12:37,020 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 274 transitions, 3359 flow [2024-06-28 02:12:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:37,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:37,020 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 02:12:37,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:12:37,021 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:37,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -997273906, now seen corresponding path program 3 times [2024-06-28 02:12:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:37,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015668638] [2024-06-28 02:12:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:37,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015668638] [2024-06-28 02:12:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015668638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:39,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105242335] [2024-06-28 02:12:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:39,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 274 transitions, 3359 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:39,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:39,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:41,070 INFO L124 PetriNetUnfolderBase]: 4306/6721 cut-off events. [2024-06-28 02:12:41,071 INFO L125 PetriNetUnfolderBase]: For 132116/132116 co-relation queries the response was YES. [2024-06-28 02:12:41,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40229 conditions, 6721 events. 4306/6721 cut-off events. For 132116/132116 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40122 event pairs, 1157 based on Foata normal form. 4/6603 useless extension candidates. Maximal degree in co-relation 40158. Up to 6106 conditions per place. [2024-06-28 02:12:41,127 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 295 selfloop transitions, 25 changer transitions 0/328 dead transitions. [2024-06-28 02:12:41,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 328 transitions, 4240 flow [2024-06-28 02:12:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:12:41,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:12:41,129 INFO L175 Difference]: Start difference. First operand has 159 places, 274 transitions, 3359 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:12:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 328 transitions, 4240 flow [2024-06-28 02:12:41,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 328 transitions, 4084 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:41,274 INFO L231 Difference]: Finished difference. Result has 165 places, 277 transitions, 3363 flow [2024-06-28 02:12:41,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3363, PETRI_PLACES=165, PETRI_TRANSITIONS=277} [2024-06-28 02:12:41,275 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-28 02:12:41,275 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 277 transitions, 3363 flow [2024-06-28 02:12:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:41,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:41,275 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 02:12:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:12:41,276 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:41,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1923943892, now seen corresponding path program 2 times [2024-06-28 02:12:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:41,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792341828] [2024-06-28 02:12:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:43,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792341828] [2024-06-28 02:12:43,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792341828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:43,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:43,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:43,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919933656] [2024-06-28 02:12:43,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:43,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:43,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:43,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:43,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 277 transitions, 3363 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:43,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:43,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:45,879 INFO L124 PetriNetUnfolderBase]: 4457/6962 cut-off events. [2024-06-28 02:12:45,880 INFO L125 PetriNetUnfolderBase]: For 151454/151456 co-relation queries the response was YES. [2024-06-28 02:12:45,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42388 conditions, 6962 events. 4457/6962 cut-off events. For 151454/151456 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41756 event pairs, 1189 based on Foata normal form. 16/6856 useless extension candidates. Maximal degree in co-relation 42315. Up to 5984 conditions per place. [2024-06-28 02:12:45,956 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 214 selfloop transitions, 123 changer transitions 0/345 dead transitions. [2024-06-28 02:12:45,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 345 transitions, 4407 flow [2024-06-28 02:12:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 02:12:45,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:12:45,958 INFO L175 Difference]: Start difference. First operand has 165 places, 277 transitions, 3363 flow. Second operand 9 states and 225 transitions. [2024-06-28 02:12:45,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 345 transitions, 4407 flow [2024-06-28 02:12:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 345 transitions, 4252 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:46,152 INFO L231 Difference]: Finished difference. Result has 167 places, 283 transitions, 3636 flow [2024-06-28 02:12:46,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3636, PETRI_PLACES=167, PETRI_TRANSITIONS=283} [2024-06-28 02:12:46,153 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 02:12:46,153 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 283 transitions, 3636 flow [2024-06-28 02:12:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:46,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:46,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:46,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:12:46,154 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:46,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1620592058, now seen corresponding path program 3 times [2024-06-28 02:12:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:46,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797428734] [2024-06-28 02:12:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:48,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797428734] [2024-06-28 02:12:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797428734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:48,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:48,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:48,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919849658] [2024-06-28 02:12:48,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:48,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:48,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 283 transitions, 3636 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:48,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:48,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:48,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:51,158 INFO L124 PetriNetUnfolderBase]: 4762/7455 cut-off events. [2024-06-28 02:12:51,159 INFO L125 PetriNetUnfolderBase]: For 185239/185239 co-relation queries the response was YES. [2024-06-28 02:12:51,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47393 conditions, 7455 events. 4762/7455 cut-off events. For 185239/185239 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 45227 event pairs, 1212 based on Foata normal form. 12/7345 useless extension candidates. Maximal degree in co-relation 47319. Up to 6130 conditions per place. [2024-06-28 02:12:51,239 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 309 selfloop transitions, 43 changer transitions 0/360 dead transitions. [2024-06-28 02:12:51,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 360 transitions, 4972 flow [2024-06-28 02:12:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 02:12:51,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-28 02:12:51,241 INFO L175 Difference]: Start difference. First operand has 167 places, 283 transitions, 3636 flow. Second operand 9 states and 227 transitions. [2024-06-28 02:12:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 360 transitions, 4972 flow [2024-06-28 02:12:51,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 360 transitions, 4399 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:51,504 INFO L231 Difference]: Finished difference. Result has 170 places, 292 transitions, 3478 flow [2024-06-28 02:12:51,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3478, PETRI_PLACES=170, PETRI_TRANSITIONS=292} [2024-06-28 02:12:51,505 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 02:12:51,506 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 292 transitions, 3478 flow [2024-06-28 02:12:51,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:51,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:51,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:51,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:12:51,506 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:51,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1916592242, now seen corresponding path program 4 times [2024-06-28 02:12:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:51,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556361177] [2024-06-28 02:12:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:54,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556361177] [2024-06-28 02:12:54,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556361177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:54,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:54,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:54,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845439878] [2024-06-28 02:12:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:54,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:54,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:54,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 292 transitions, 3478 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:54,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:54,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:54,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:56,731 INFO L124 PetriNetUnfolderBase]: 4734/7409 cut-off events. [2024-06-28 02:12:56,731 INFO L125 PetriNetUnfolderBase]: For 180810/180812 co-relation queries the response was YES. [2024-06-28 02:12:56,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45875 conditions, 7409 events. 4734/7409 cut-off events. For 180810/180812 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45036 event pairs, 1267 based on Foata normal form. 16/7303 useless extension candidates. Maximal degree in co-relation 45800. Up to 6452 conditions per place. [2024-06-28 02:12:56,826 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 302 selfloop transitions, 44 changer transitions 0/354 dead transitions. [2024-06-28 02:12:56,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 354 transitions, 4372 flow [2024-06-28 02:12:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:12:56,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-28 02:12:56,828 INFO L175 Difference]: Start difference. First operand has 170 places, 292 transitions, 3478 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:12:56,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 354 transitions, 4372 flow [2024-06-28 02:12:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 354 transitions, 4250 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:57,121 INFO L231 Difference]: Finished difference. Result has 175 places, 292 transitions, 3455 flow [2024-06-28 02:12:57,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3455, PETRI_PLACES=175, PETRI_TRANSITIONS=292} [2024-06-28 02:12:57,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-06-28 02:12:57,122 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 292 transitions, 3455 flow [2024-06-28 02:12:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:57,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:57,122 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 02:12:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:12:57,123 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:57,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -612471343, now seen corresponding path program 1 times [2024-06-28 02:12:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690549224] [2024-06-28 02:12:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:58,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690549224] [2024-06-28 02:12:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690549224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:58,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406951696] [2024-06-28 02:12:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:58,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:58,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:12:58,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 292 transitions, 3455 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:58,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:12:58,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:00,744 INFO L124 PetriNetUnfolderBase]: 4780/7576 cut-off events. [2024-06-28 02:13:00,744 INFO L125 PetriNetUnfolderBase]: For 164282/164284 co-relation queries the response was YES. [2024-06-28 02:13:00,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45644 conditions, 7576 events. 4780/7576 cut-off events. For 164282/164284 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 46473 event pairs, 1270 based on Foata normal form. 2/7426 useless extension candidates. Maximal degree in co-relation 45567. Up to 6743 conditions per place. [2024-06-28 02:13:00,819 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 286 selfloop transitions, 46 changer transitions 0/340 dead transitions. [2024-06-28 02:13:00,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 340 transitions, 4571 flow [2024-06-28 02:13:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:13:00,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-28 02:13:00,820 INFO L175 Difference]: Start difference. First operand has 175 places, 292 transitions, 3455 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:13:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 340 transitions, 4571 flow [2024-06-28 02:13:01,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 340 transitions, 4478 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:01,014 INFO L231 Difference]: Finished difference. Result has 176 places, 302 transitions, 3659 flow [2024-06-28 02:13:01,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3659, PETRI_PLACES=176, PETRI_TRANSITIONS=302} [2024-06-28 02:13:01,015 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 02:13:01,015 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 302 transitions, 3659 flow [2024-06-28 02:13:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:01,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:01,015 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 02:13:01,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:13:01,016 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:01,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1316081940, now seen corresponding path program 5 times [2024-06-28 02:13:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049892852] [2024-06-28 02:13:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049892852] [2024-06-28 02:13:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049892852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508486391] [2024-06-28 02:13:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:03,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:03,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 302 transitions, 3659 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:03,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:03,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:03,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:05,691 INFO L124 PetriNetUnfolderBase]: 5062/7926 cut-off events. [2024-06-28 02:13:05,692 INFO L125 PetriNetUnfolderBase]: For 207877/207877 co-relation queries the response was YES. [2024-06-28 02:13:05,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51070 conditions, 7926 events. 5062/7926 cut-off events. For 207877/207877 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48969 event pairs, 1222 based on Foata normal form. 12/7807 useless extension candidates. Maximal degree in co-relation 50990. Up to 6515 conditions per place. [2024-06-28 02:13:05,771 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 184 selfloop transitions, 179 changer transitions 0/371 dead transitions. [2024-06-28 02:13:05,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 371 transitions, 4925 flow [2024-06-28 02:13:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:13:05,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:13:05,773 INFO L175 Difference]: Start difference. First operand has 176 places, 302 transitions, 3659 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:13:05,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 371 transitions, 4925 flow [2024-06-28 02:13:06,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 371 transitions, 4917 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:13:06,043 INFO L231 Difference]: Finished difference. Result has 184 places, 306 transitions, 4212 flow [2024-06-28 02:13:06,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4212, PETRI_PLACES=184, PETRI_TRANSITIONS=306} [2024-06-28 02:13:06,044 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 02:13:06,044 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 306 transitions, 4212 flow [2024-06-28 02:13:06,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:06,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:06,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:13:06,044 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:06,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1315815030, now seen corresponding path program 6 times [2024-06-28 02:13:06,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:06,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352632479] [2024-06-28 02:13:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:06,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:08,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352632479] [2024-06-28 02:13:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352632479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:08,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:08,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:08,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933027284] [2024-06-28 02:13:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:08,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:08,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:08,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 306 transitions, 4212 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:08,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:08,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:08,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:10,673 INFO L124 PetriNetUnfolderBase]: 5034/7880 cut-off events. [2024-06-28 02:13:10,674 INFO L125 PetriNetUnfolderBase]: For 216563/216563 co-relation queries the response was YES. [2024-06-28 02:13:10,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51383 conditions, 7880 events. 5034/7880 cut-off events. For 216563/216563 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 48708 event pairs, 1235 based on Foata normal form. 16/7765 useless extension candidates. Maximal degree in co-relation 51300. Up to 6690 conditions per place. [2024-06-28 02:13:10,759 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 182 selfloop transitions, 176 changer transitions 0/366 dead transitions. [2024-06-28 02:13:10,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 366 transitions, 5134 flow [2024-06-28 02:13:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:13:10,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 02:13:10,769 INFO L175 Difference]: Start difference. First operand has 184 places, 306 transitions, 4212 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:13:10,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 366 transitions, 5134 flow [2024-06-28 02:13:11,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 366 transitions, 4812 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:11,087 INFO L231 Difference]: Finished difference. Result has 188 places, 306 transitions, 4250 flow [2024-06-28 02:13:11,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4250, PETRI_PLACES=188, PETRI_TRANSITIONS=306} [2024-06-28 02:13:11,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-28 02:13:11,088 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 306 transitions, 4250 flow [2024-06-28 02:13:11,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:11,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:11,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:11,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:13:11,088 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:11,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1629781170, now seen corresponding path program 7 times [2024-06-28 02:13:11,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:11,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935854389] [2024-06-28 02:13:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935854389] [2024-06-28 02:13:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935854389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:13,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:13,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:13,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614925335] [2024-06-28 02:13:13,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:13,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:13,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:13,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 306 transitions, 4250 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:13,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:13,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:16,213 INFO L124 PetriNetUnfolderBase]: 5584/8763 cut-off events. [2024-06-28 02:13:16,214 INFO L125 PetriNetUnfolderBase]: For 232396/232396 co-relation queries the response was YES. [2024-06-28 02:13:16,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57289 conditions, 8763 events. 5584/8763 cut-off events. For 232396/232396 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 54795 event pairs, 1189 based on Foata normal form. 12/8644 useless extension candidates. Maximal degree in co-relation 57204. Up to 5849 conditions per place. [2024-06-28 02:13:16,298 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 167 selfloop transitions, 207 changer transitions 0/382 dead transitions. [2024-06-28 02:13:16,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 382 transitions, 5694 flow [2024-06-28 02:13:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:13:16,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:13:16,300 INFO L175 Difference]: Start difference. First operand has 188 places, 306 transitions, 4250 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:13:16,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 382 transitions, 5694 flow [2024-06-28 02:13:16,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 382 transitions, 5333 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:13:16,586 INFO L231 Difference]: Finished difference. Result has 190 places, 316 transitions, 4730 flow [2024-06-28 02:13:16,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=190, PETRI_TRANSITIONS=316} [2024-06-28 02:13:16,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-28 02:13:16,587 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 316 transitions, 4730 flow [2024-06-28 02:13:16,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:16,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:16,588 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 02:13:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:13:16,588 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:16,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:16,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1067653652, now seen corresponding path program 8 times [2024-06-28 02:13:16,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:16,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913599930] [2024-06-28 02:13:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:19,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913599930] [2024-06-28 02:13:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913599930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:19,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648706610] [2024-06-28 02:13:19,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:19,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:19,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 316 transitions, 4730 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:19,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:19,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:19,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:22,996 INFO L124 PetriNetUnfolderBase]: 5735/9013 cut-off events. [2024-06-28 02:13:22,997 INFO L125 PetriNetUnfolderBase]: For 269031/269031 co-relation queries the response was YES. [2024-06-28 02:13:23,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61211 conditions, 9013 events. 5735/9013 cut-off events. For 269031/269031 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 56967 event pairs, 1405 based on Foata normal form. 16/8902 useless extension candidates. Maximal degree in co-relation 61124. Up to 8010 conditions per place. [2024-06-28 02:13:23,085 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 340 selfloop transitions, 48 changer transitions 0/396 dead transitions. [2024-06-28 02:13:23,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 396 transitions, 5951 flow [2024-06-28 02:13:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 02:13:23,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 02:13:23,087 INFO L175 Difference]: Start difference. First operand has 190 places, 316 transitions, 4730 flow. Second operand 10 states and 246 transitions. [2024-06-28 02:13:23,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 396 transitions, 5951 flow [2024-06-28 02:13:23,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 396 transitions, 5656 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:23,482 INFO L231 Difference]: Finished difference. Result has 197 places, 326 transitions, 4777 flow [2024-06-28 02:13:23,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4447, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4777, PETRI_PLACES=197, PETRI_TRANSITIONS=326} [2024-06-28 02:13:23,482 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-28 02:13:23,482 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 326 transitions, 4777 flow [2024-06-28 02:13:23,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:23,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:23,483 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 02:13:23,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:13:23,483 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:23,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1067920562, now seen corresponding path program 9 times [2024-06-28 02:13:23,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:23,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726832516] [2024-06-28 02:13:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:23,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:25,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726832516] [2024-06-28 02:13:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726832516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866751159] [2024-06-28 02:13:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:25,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:25,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 326 transitions, 4777 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:25,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:25,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:25,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:28,614 INFO L124 PetriNetUnfolderBase]: 5859/9190 cut-off events. [2024-06-28 02:13:28,614 INFO L125 PetriNetUnfolderBase]: For 265098/265098 co-relation queries the response was YES. [2024-06-28 02:13:28,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62824 conditions, 9190 events. 5859/9190 cut-off events. For 265098/265098 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 58176 event pairs, 1390 based on Foata normal form. 12/9071 useless extension candidates. Maximal degree in co-relation 62733. Up to 7745 conditions per place. [2024-06-28 02:13:28,710 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 255 selfloop transitions, 132 changer transitions 0/395 dead transitions. [2024-06-28 02:13:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 395 transitions, 6015 flow [2024-06-28 02:13:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 02:13:28,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 02:13:28,729 INFO L175 Difference]: Start difference. First operand has 197 places, 326 transitions, 4777 flow. Second operand 9 states and 226 transitions. [2024-06-28 02:13:28,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 395 transitions, 6015 flow [2024-06-28 02:13:29,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 395 transitions, 5856 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:29,204 INFO L231 Difference]: Finished difference. Result has 201 places, 332 transitions, 5156 flow [2024-06-28 02:13:29,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5156, PETRI_PLACES=201, PETRI_TRANSITIONS=332} [2024-06-28 02:13:29,205 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-28 02:13:29,205 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 332 transitions, 5156 flow [2024-06-28 02:13:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:29,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:29,205 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 02:13:29,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:13:29,206 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:29,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash -600091183, now seen corresponding path program 2 times [2024-06-28 02:13:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556560549] [2024-06-28 02:13:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:29,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556560549] [2024-06-28 02:13:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556560549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:31,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:31,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:31,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326169610] [2024-06-28 02:13:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:31,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:31,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 332 transitions, 5156 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:31,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:31,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:31,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:33,795 INFO L124 PetriNetUnfolderBase]: 5853/9260 cut-off events. [2024-06-28 02:13:33,796 INFO L125 PetriNetUnfolderBase]: For 260182/260182 co-relation queries the response was YES. [2024-06-28 02:13:33,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62629 conditions, 9260 events. 5853/9260 cut-off events. For 260182/260182 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 58834 event pairs, 1586 based on Foata normal form. 2/9103 useless extension candidates. Maximal degree in co-relation 62536. Up to 8418 conditions per place. [2024-06-28 02:13:33,885 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 308 selfloop transitions, 47 changer transitions 0/363 dead transitions. [2024-06-28 02:13:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 363 transitions, 6102 flow [2024-06-28 02:13:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:13:33,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 02:13:33,887 INFO L175 Difference]: Start difference. First operand has 201 places, 332 transitions, 5156 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:13:33,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 363 transitions, 6102 flow [2024-06-28 02:13:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 363 transitions, 5835 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:34,348 INFO L231 Difference]: Finished difference. Result has 202 places, 334 transitions, 5019 flow [2024-06-28 02:13:34,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4889, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5019, PETRI_PLACES=202, PETRI_TRANSITIONS=334} [2024-06-28 02:13:34,349 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 02:13:34,349 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 334 transitions, 5019 flow [2024-06-28 02:13:34,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:34,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:34,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:13:34,350 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:34,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash 567601526, now seen corresponding path program 10 times [2024-06-28 02:13:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726078646] [2024-06-28 02:13:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:36,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726078646] [2024-06-28 02:13:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726078646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:36,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270873224] [2024-06-28 02:13:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:36,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:36,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:36,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 334 transitions, 5019 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:36,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:36,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:39,547 INFO L124 PetriNetUnfolderBase]: 6287/9836 cut-off events. [2024-06-28 02:13:39,548 INFO L125 PetriNetUnfolderBase]: For 282455/282455 co-relation queries the response was YES. [2024-06-28 02:13:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67834 conditions, 9836 events. 6287/9836 cut-off events. For 282455/282455 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 62566 event pairs, 1604 based on Foata normal form. 16/9728 useless extension candidates. Maximal degree in co-relation 67739. Up to 8737 conditions per place. [2024-06-28 02:13:39,639 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 368 selfloop transitions, 84 changer transitions 0/460 dead transitions. [2024-06-28 02:13:39,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 460 transitions, 7093 flow [2024-06-28 02:13:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:13:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:13:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-06-28 02:13:39,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-28 02:13:39,641 INFO L175 Difference]: Start difference. First operand has 202 places, 334 transitions, 5019 flow. Second operand 12 states and 278 transitions. [2024-06-28 02:13:39,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 460 transitions, 7093 flow [2024-06-28 02:13:40,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 460 transitions, 7022 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:13:40,096 INFO L231 Difference]: Finished difference. Result has 215 places, 388 transitions, 6211 flow [2024-06-28 02:13:40,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6211, PETRI_PLACES=215, PETRI_TRANSITIONS=388} [2024-06-28 02:13:40,097 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-28 02:13:40,097 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 388 transitions, 6211 flow [2024-06-28 02:13:40,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:40,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:40,097 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 02:13:40,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:13:40,097 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:40,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1670748780, now seen corresponding path program 11 times [2024-06-28 02:13:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:40,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26531645] [2024-06-28 02:13:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:42,560 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 02:13:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26531645] [2024-06-28 02:13:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26531645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:42,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397350784] [2024-06-28 02:13:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:42,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:42,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:42,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:13:42,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 388 transitions, 6211 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:42,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:42,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:13:42,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:45,997 INFO L124 PetriNetUnfolderBase]: 7059/10977 cut-off events. [2024-06-28 02:13:45,997 INFO L125 PetriNetUnfolderBase]: For 341851/341851 co-relation queries the response was YES. [2024-06-28 02:13:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79182 conditions, 10977 events. 7059/10977 cut-off events. For 341851/341851 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 70278 event pairs, 1693 based on Foata normal form. 28/10881 useless extension candidates. Maximal degree in co-relation 79082. Up to 9250 conditions per place. [2024-06-28 02:13:46,110 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 414 selfloop transitions, 97 changer transitions 0/519 dead transitions. [2024-06-28 02:13:46,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 519 transitions, 8823 flow [2024-06-28 02:13:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 02:13:46,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 02:13:46,111 INFO L175 Difference]: Start difference. First operand has 215 places, 388 transitions, 6211 flow. Second operand 10 states and 249 transitions. [2024-06-28 02:13:46,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 519 transitions, 8823 flow [2024-06-28 02:13:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 519 transitions, 8447 flow, removed 111 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:46,937 INFO L231 Difference]: Finished difference. Result has 223 places, 448 transitions, 7575 flow [2024-06-28 02:13:46,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5987, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7575, PETRI_PLACES=223, PETRI_TRANSITIONS=448} [2024-06-28 02:13:46,938 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 02:13:46,938 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 448 transitions, 7575 flow [2024-06-28 02:13:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:46,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:46,939 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 02:13:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:13:46,939 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash -605768368, now seen corresponding path program 1 times [2024-06-28 02:13:46,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:46,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787543907] [2024-06-28 02:13:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:49,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787543907] [2024-06-28 02:13:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787543907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:49,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:49,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63846700] [2024-06-28 02:13:49,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:49,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:49,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:49,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:49,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 448 transitions, 7575 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:13:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:49,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:51,971 INFO L124 PetriNetUnfolderBase]: 6789/10738 cut-off events. [2024-06-28 02:13:51,972 INFO L125 PetriNetUnfolderBase]: For 283590/283590 co-relation queries the response was YES. [2024-06-28 02:13:52,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76302 conditions, 10738 events. 6789/10738 cut-off events. For 283590/283590 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 70682 event pairs, 1965 based on Foata normal form. 2/10594 useless extension candidates. Maximal degree in co-relation 76197. Up to 9921 conditions per place. [2024-06-28 02:13:52,102 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 455 selfloop transitions, 16 changer transitions 0/483 dead transitions. [2024-06-28 02:13:52,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 483 transitions, 8787 flow [2024-06-28 02:13:52,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 02:13:52,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 02:13:52,103 INFO L175 Difference]: Start difference. First operand has 223 places, 448 transitions, 7575 flow. Second operand 6 states and 146 transitions. [2024-06-28 02:13:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 483 transitions, 8787 flow [2024-06-28 02:13:52,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 483 transitions, 8612 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:52,749 INFO L231 Difference]: Finished difference. Result has 226 places, 454 transitions, 7576 flow [2024-06-28 02:13:52,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7400, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7576, PETRI_PLACES=226, PETRI_TRANSITIONS=454} [2024-06-28 02:13:52,750 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-28 02:13:52,750 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 454 transitions, 7576 flow [2024-06-28 02:13:52,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:13:52,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:52,751 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 02:13:52,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:13:52,751 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:52,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -600084208, now seen corresponding path program 2 times [2024-06-28 02:13:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:52,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085616424] [2024-06-28 02:13:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:54,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:54,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085616424] [2024-06-28 02:13:54,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085616424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:54,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:54,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:54,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763304580] [2024-06-28 02:13:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:54,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:54,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:54,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:13:54,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 454 transitions, 7576 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:13:54,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:54,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:13:54,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:57,485 INFO L124 PetriNetUnfolderBase]: 6824/10779 cut-off events. [2024-06-28 02:13:57,485 INFO L125 PetriNetUnfolderBase]: For 275510/275510 co-relation queries the response was YES. [2024-06-28 02:13:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75931 conditions, 10779 events. 6824/10779 cut-off events. For 275510/275510 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 70687 event pairs, 2036 based on Foata normal form. 3/10633 useless extension candidates. Maximal degree in co-relation 75825. Up to 9969 conditions per place. [2024-06-28 02:13:57,616 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 458 selfloop transitions, 16 changer transitions 0/486 dead transitions. [2024-06-28 02:13:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 486 transitions, 8763 flow [2024-06-28 02:13:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:13:57,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:13:57,618 INFO L175 Difference]: Start difference. First operand has 226 places, 454 transitions, 7576 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:13:57,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 486 transitions, 8763 flow [2024-06-28 02:13:58,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 486 transitions, 8687 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 02:13:58,213 INFO L231 Difference]: Finished difference. Result has 231 places, 463 transitions, 7681 flow [2024-06-28 02:13:58,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7500, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7681, PETRI_PLACES=231, PETRI_TRANSITIONS=463} [2024-06-28 02:13:58,228 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-28 02:13:58,228 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 463 transitions, 7681 flow [2024-06-28 02:13:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:13:58,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:58,228 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 02:13:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:13:58,228 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:58,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1810338339, now seen corresponding path program 1 times [2024-06-28 02:13:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870593199] [2024-06-28 02:13:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:58,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:01,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870593199] [2024-06-28 02:14:01,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870593199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:01,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:01,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:01,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361944786] [2024-06-28 02:14:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:01,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:01,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:01,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:01,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 463 transitions, 7681 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:01,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:01,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:01,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:04,611 INFO L124 PetriNetUnfolderBase]: 7277/11406 cut-off events. [2024-06-28 02:14:04,612 INFO L125 PetriNetUnfolderBase]: For 328399/328399 co-relation queries the response was YES. [2024-06-28 02:14:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82080 conditions, 11406 events. 7277/11406 cut-off events. For 328399/328399 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 73174 event pairs, 1607 based on Foata normal form. 12/11258 useless extension candidates. Maximal degree in co-relation 81971. Up to 10296 conditions per place. [2024-06-28 02:14:04,749 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 473 selfloop transitions, 53 changer transitions 0/534 dead transitions. [2024-06-28 02:14:04,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 534 transitions, 9095 flow [2024-06-28 02:14:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:14:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:14:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:14:04,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 02:14:04,750 INFO L175 Difference]: Start difference. First operand has 231 places, 463 transitions, 7681 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:14:04,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 534 transitions, 9095 flow [2024-06-28 02:14:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 534 transitions, 9023 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:05,411 INFO L231 Difference]: Finished difference. Result has 239 places, 470 transitions, 7883 flow [2024-06-28 02:14:05,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7883, PETRI_PLACES=239, PETRI_TRANSITIONS=470} [2024-06-28 02:14:05,411 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 02:14:05,411 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 470 transitions, 7883 flow [2024-06-28 02:14:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:05,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:05,412 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 02:14:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:14:05,412 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:05,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1666792531, now seen corresponding path program 1 times [2024-06-28 02:14:05,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:05,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133631299] [2024-06-28 02:14:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:07,217 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 02:14:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133631299] [2024-06-28 02:14:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133631299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95279417] [2024-06-28 02:14:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:07,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:07,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 470 transitions, 7883 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:07,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:07,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:07,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:11,106 INFO L124 PetriNetUnfolderBase]: 7369/11433 cut-off events. [2024-06-28 02:14:11,106 INFO L125 PetriNetUnfolderBase]: For 333292/333292 co-relation queries the response was YES. [2024-06-28 02:14:11,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83309 conditions, 11433 events. 7369/11433 cut-off events. For 333292/333292 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73361 event pairs, 1758 based on Foata normal form. 4/11309 useless extension candidates. Maximal degree in co-relation 83197. Up to 10343 conditions per place. [2024-06-28 02:14:11,234 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 435 selfloop transitions, 82 changer transitions 0/525 dead transitions. [2024-06-28 02:14:11,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 525 transitions, 9487 flow [2024-06-28 02:14:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:14:11,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-28 02:14:11,236 INFO L175 Difference]: Start difference. First operand has 239 places, 470 transitions, 7883 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:14:11,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 525 transitions, 9487 flow [2024-06-28 02:14:11,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 525 transitions, 9317 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:11,953 INFO L231 Difference]: Finished difference. Result has 241 places, 476 transitions, 7965 flow [2024-06-28 02:14:11,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7713, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7965, PETRI_PLACES=241, PETRI_TRANSITIONS=476} [2024-06-28 02:14:11,954 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-28 02:14:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 476 transitions, 7965 flow [2024-06-28 02:14:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:11,955 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 02:14:11,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:14:11,955 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:11,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1867583635, now seen corresponding path program 2 times [2024-06-28 02:14:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:11,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696460260] [2024-06-28 02:14:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696460260] [2024-06-28 02:14:14,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696460260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:14,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:14,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719341651] [2024-06-28 02:14:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:14,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:14,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 476 transitions, 7965 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:14,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:14,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:17,878 INFO L124 PetriNetUnfolderBase]: 7461/11599 cut-off events. [2024-06-28 02:14:17,879 INFO L125 PetriNetUnfolderBase]: For 342659/342659 co-relation queries the response was YES. [2024-06-28 02:14:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84614 conditions, 11599 events. 7461/11599 cut-off events. For 342659/342659 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74740 event pairs, 2273 based on Foata normal form. 4/11467 useless extension candidates. Maximal degree in co-relation 84501. Up to 10830 conditions per place. [2024-06-28 02:14:18,015 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 482 selfloop transitions, 25 changer transitions 0/515 dead transitions. [2024-06-28 02:14:18,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 515 transitions, 9307 flow [2024-06-28 02:14:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:14:18,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:14:18,017 INFO L175 Difference]: Start difference. First operand has 241 places, 476 transitions, 7965 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:14:18,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 515 transitions, 9307 flow [2024-06-28 02:14:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 515 transitions, 9250 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:18,675 INFO L231 Difference]: Finished difference. Result has 245 places, 479 transitions, 8015 flow [2024-06-28 02:14:18,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7910, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8015, PETRI_PLACES=245, PETRI_TRANSITIONS=479} [2024-06-28 02:14:18,676 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-28 02:14:18,676 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 479 transitions, 8015 flow [2024-06-28 02:14:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:18,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:18,677 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 02:14:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:14:18,679 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:18,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2011353741, now seen corresponding path program 3 times [2024-06-28 02:14:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011313550] [2024-06-28 02:14:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011313550] [2024-06-28 02:14:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011313550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:20,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:20,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036471592] [2024-06-28 02:14:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:20,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:20,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 479 transitions, 8015 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:20,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:20,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:20,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:24,728 INFO L124 PetriNetUnfolderBase]: 7449/11550 cut-off events. [2024-06-28 02:14:24,728 INFO L125 PetriNetUnfolderBase]: For 341548/341548 co-relation queries the response was YES. [2024-06-28 02:14:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84479 conditions, 11550 events. 7449/11550 cut-off events. For 341548/341548 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 74083 event pairs, 1772 based on Foata normal form. 4/11411 useless extension candidates. Maximal degree in co-relation 84364. Up to 10399 conditions per place. [2024-06-28 02:14:24,854 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 427 selfloop transitions, 84 changer transitions 0/519 dead transitions. [2024-06-28 02:14:24,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 519 transitions, 9375 flow [2024-06-28 02:14:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:14:24,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 02:14:24,856 INFO L175 Difference]: Start difference. First operand has 245 places, 479 transitions, 8015 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:14:24,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 519 transitions, 9375 flow [2024-06-28 02:14:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 519 transitions, 9252 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:14:25,576 INFO L231 Difference]: Finished difference. Result has 245 places, 479 transitions, 8066 flow [2024-06-28 02:14:25,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8066, PETRI_PLACES=245, PETRI_TRANSITIONS=479} [2024-06-28 02:14:25,577 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-28 02:14:25,577 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 479 transitions, 8066 flow [2024-06-28 02:14:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:14:25,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:25,578 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 02:14:25,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:14:25,578 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:25,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash 415595737, now seen corresponding path program 2 times [2024-06-28 02:14:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950489129] [2024-06-28 02:14:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950489129] [2024-06-28 02:14:27,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950489129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:14:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050775808] [2024-06-28 02:14:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:14:27,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:14:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:14:27,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:27,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 479 transitions, 8066 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:27,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:27,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:27,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:31,655 INFO L124 PetriNetUnfolderBase]: 7770/12157 cut-off events. [2024-06-28 02:14:31,656 INFO L125 PetriNetUnfolderBase]: For 358313/358313 co-relation queries the response was YES. [2024-06-28 02:14:31,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87619 conditions, 12157 events. 7770/12157 cut-off events. For 358313/358313 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 79019 event pairs, 1905 based on Foata normal form. 12/12001 useless extension candidates. Maximal degree in co-relation 87505. Up to 10699 conditions per place. [2024-06-28 02:14:31,827 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 474 selfloop transitions, 83 changer transitions 0/565 dead transitions. [2024-06-28 02:14:31,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 565 transitions, 9692 flow [2024-06-28 02:14:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:14:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:14:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 02:14:31,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 02:14:31,829 INFO L175 Difference]: Start difference. First operand has 245 places, 479 transitions, 8066 flow. Second operand 10 states and 246 transitions. [2024-06-28 02:14:31,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 565 transitions, 9692 flow [2024-06-28 02:14:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 565 transitions, 9449 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:14:32,611 INFO L231 Difference]: Finished difference. Result has 249 places, 493 transitions, 8295 flow [2024-06-28 02:14:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7749, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8295, PETRI_PLACES=249, PETRI_TRANSITIONS=493} [2024-06-28 02:14:32,612 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-28 02:14:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 493 transitions, 8295 flow [2024-06-28 02:14:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:32,613 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 02:14:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:14:32,613 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:32,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1599038187, now seen corresponding path program 1 times [2024-06-28 02:14:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044729958] [2024-06-28 02:14:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:34,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044729958] [2024-06-28 02:14:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044729958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:34,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071849273] [2024-06-28 02:14:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:34,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:34,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:34,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:34,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:34,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 493 transitions, 8295 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:34,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:38,461 INFO L124 PetriNetUnfolderBase]: 7515/11875 cut-off events. [2024-06-28 02:14:38,461 INFO L125 PetriNetUnfolderBase]: For 337913/337914 co-relation queries the response was YES. [2024-06-28 02:14:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86162 conditions, 11875 events. 7515/11875 cut-off events. For 337913/337914 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 78432 event pairs, 2223 based on Foata normal form. 3/11688 useless extension candidates. Maximal degree in co-relation 86046. Up to 10775 conditions per place. [2024-06-28 02:14:38,622 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 494 selfloop transitions, 47 changer transitions 0/553 dead transitions. [2024-06-28 02:14:38,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 553 transitions, 10209 flow [2024-06-28 02:14:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:14:38,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-28 02:14:38,623 INFO L175 Difference]: Start difference. First operand has 249 places, 493 transitions, 8295 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:14:38,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 553 transitions, 10209 flow [2024-06-28 02:14:39,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 553 transitions, 9960 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:39,504 INFO L231 Difference]: Finished difference. Result has 252 places, 504 transitions, 8443 flow [2024-06-28 02:14:39,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8443, PETRI_PLACES=252, PETRI_TRANSITIONS=504} [2024-06-28 02:14:39,504 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 02:14:39,505 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 504 transitions, 8443 flow [2024-06-28 02:14:39,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:39,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:39,505 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 02:14:39,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:14:39,505 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:39,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash 824517929, now seen corresponding path program 2 times [2024-06-28 02:14:39,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:39,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193950652] [2024-06-28 02:14:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193950652] [2024-06-28 02:14:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193950652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:42,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:42,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:42,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187292979] [2024-06-28 02:14:42,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:42,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:42,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:42,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 504 transitions, 8443 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:42,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:42,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:45,885 INFO L124 PetriNetUnfolderBase]: 7513/11790 cut-off events. [2024-06-28 02:14:45,886 INFO L125 PetriNetUnfolderBase]: For 329591/329592 co-relation queries the response was YES. [2024-06-28 02:14:45,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85779 conditions, 11790 events. 7513/11790 cut-off events. For 329591/329592 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77702 event pairs, 2240 based on Foata normal form. 3/11643 useless extension candidates. Maximal degree in co-relation 85661. Up to 10925 conditions per place. [2024-06-28 02:14:46,050 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 513 selfloop transitions, 19 changer transitions 0/544 dead transitions. [2024-06-28 02:14:46,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 544 transitions, 9801 flow [2024-06-28 02:14:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:14:46,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:14:46,052 INFO L175 Difference]: Start difference. First operand has 252 places, 504 transitions, 8443 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:14:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 544 transitions, 9801 flow [2024-06-28 02:14:46,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 544 transitions, 9721 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:47,004 INFO L231 Difference]: Finished difference. Result has 256 places, 507 transitions, 8465 flow [2024-06-28 02:14:47,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8363, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8465, PETRI_PLACES=256, PETRI_TRANSITIONS=507} [2024-06-28 02:14:47,005 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-28 02:14:47,005 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 507 transitions, 8465 flow [2024-06-28 02:14:47,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:47,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:47,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:14:47,006 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:47,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1216115819, now seen corresponding path program 3 times [2024-06-28 02:14:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066983721] [2024-06-28 02:14:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:47,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:49,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066983721] [2024-06-28 02:14:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066983721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:49,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:49,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83998839] [2024-06-28 02:14:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:49,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:49,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:14:49,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 507 transitions, 8465 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:49,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:49,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:14:49,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:52,865 INFO L124 PetriNetUnfolderBase]: 7577/11868 cut-off events. [2024-06-28 02:14:52,866 INFO L125 PetriNetUnfolderBase]: For 339525/339526 co-relation queries the response was YES. [2024-06-28 02:14:52,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87262 conditions, 11868 events. 7577/11868 cut-off events. For 339525/339526 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 78002 event pairs, 2323 based on Foata normal form. 4/11716 useless extension candidates. Maximal degree in co-relation 87143. Up to 10999 conditions per place. [2024-06-28 02:14:53,006 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 509 selfloop transitions, 20 changer transitions 0/541 dead transitions. [2024-06-28 02:14:53,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 541 transitions, 9781 flow [2024-06-28 02:14:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:14:53,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:14:53,009 INFO L175 Difference]: Start difference. First operand has 256 places, 507 transitions, 8465 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:14:53,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 541 transitions, 9781 flow [2024-06-28 02:14:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 541 transitions, 9719 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:53,709 INFO L231 Difference]: Finished difference. Result has 258 places, 511 transitions, 8556 flow [2024-06-28 02:14:53,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8403, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8556, PETRI_PLACES=258, PETRI_TRANSITIONS=511} [2024-06-28 02:14:53,709 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 02:14:53,709 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 511 transitions, 8556 flow [2024-06-28 02:14:53,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:53,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:53,710 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 02:14:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:14:53,710 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:53,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2011815083, now seen corresponding path program 1 times [2024-06-28 02:14:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146862280] [2024-06-28 02:14:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:53,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:57,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146862280] [2024-06-28 02:14:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146862280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563567086] [2024-06-28 02:14:57,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:57,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:14:57,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 511 transitions, 8556 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:57,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:57,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:14:57,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:01,381 INFO L124 PetriNetUnfolderBase]: 7984/12477 cut-off events. [2024-06-28 02:15:01,382 INFO L125 PetriNetUnfolderBase]: For 380632/380632 co-relation queries the response was YES. [2024-06-28 02:15:01,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91570 conditions, 12477 events. 7984/12477 cut-off events. For 380632/380632 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 81179 event pairs, 2527 based on Foata normal form. 2/12298 useless extension candidates. Maximal degree in co-relation 91450. Up to 11625 conditions per place. [2024-06-28 02:15:01,537 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 516 selfloop transitions, 24 changer transitions 0/548 dead transitions. [2024-06-28 02:15:01,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 548 transitions, 9954 flow [2024-06-28 02:15:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:15:01,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 02:15:01,538 INFO L175 Difference]: Start difference. First operand has 258 places, 511 transitions, 8556 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:15:01,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 548 transitions, 9954 flow [2024-06-28 02:15:02,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 548 transitions, 9833 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 02:15:02,536 INFO L231 Difference]: Finished difference. Result has 260 places, 513 transitions, 8530 flow [2024-06-28 02:15:02,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8437, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8530, PETRI_PLACES=260, PETRI_TRANSITIONS=513} [2024-06-28 02:15:02,536 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 02:15:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 513 transitions, 8530 flow [2024-06-28 02:15:02,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:02,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:02,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:15:02,537 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:02,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -180056241, now seen corresponding path program 1 times [2024-06-28 02:15:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348439858] [2024-06-28 02:15:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:05,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348439858] [2024-06-28 02:15:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348439858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:05,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927782972] [2024-06-28 02:15:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:05,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:05,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:05,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:05,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:05,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:05,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 513 transitions, 8530 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:05,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:05,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:05,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:08,924 INFO L124 PetriNetUnfolderBase]: 8040/12448 cut-off events. [2024-06-28 02:15:08,925 INFO L125 PetriNetUnfolderBase]: For 386994/386994 co-relation queries the response was YES. [2024-06-28 02:15:09,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92176 conditions, 12448 events. 8040/12448 cut-off events. For 386994/386994 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 80554 event pairs, 2290 based on Foata normal form. 2/12303 useless extension candidates. Maximal degree in co-relation 92055. Up to 11649 conditions per place. [2024-06-28 02:15:09,129 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 521 selfloop transitions, 31 changer transitions 0/560 dead transitions. [2024-06-28 02:15:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 560 transitions, 10002 flow [2024-06-28 02:15:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:15:09,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:15:09,133 INFO L175 Difference]: Start difference. First operand has 260 places, 513 transitions, 8530 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:15:09,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 560 transitions, 10002 flow [2024-06-28 02:15:10,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 560 transitions, 9939 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:15:10,083 INFO L231 Difference]: Finished difference. Result has 263 places, 520 transitions, 8723 flow [2024-06-28 02:15:10,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8467, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8723, PETRI_PLACES=263, PETRI_TRANSITIONS=520} [2024-06-28 02:15:10,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 02:15:10,084 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 520 transitions, 8723 flow [2024-06-28 02:15:10,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:10,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:10,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:15:10,085 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1703451923, now seen corresponding path program 2 times [2024-06-28 02:15:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112939113] [2024-06-28 02:15:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:10,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112939113] [2024-06-28 02:15:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112939113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:11,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:11,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:11,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426984757] [2024-06-28 02:15:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:11,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:11,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:11,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 520 transitions, 8723 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:11,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:11,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:15,959 INFO L124 PetriNetUnfolderBase]: 8116/12553 cut-off events. [2024-06-28 02:15:15,959 INFO L125 PetriNetUnfolderBase]: For 401597/401597 co-relation queries the response was YES. [2024-06-28 02:15:16,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94427 conditions, 12553 events. 8116/12553 cut-off events. For 401597/401597 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 81243 event pairs, 1943 based on Foata normal form. 2/12402 useless extension candidates. Maximal degree in co-relation 94304. Up to 11624 conditions per place. [2024-06-28 02:15:16,186 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 508 selfloop transitions, 61 changer transitions 0/577 dead transitions. [2024-06-28 02:15:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 577 transitions, 10348 flow [2024-06-28 02:15:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 02:15:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-28 02:15:16,188 INFO L175 Difference]: Start difference. First operand has 263 places, 520 transitions, 8723 flow. Second operand 8 states and 179 transitions. [2024-06-28 02:15:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 577 transitions, 10348 flow [2024-06-28 02:15:17,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 577 transitions, 10243 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:17,212 INFO L231 Difference]: Finished difference. Result has 270 places, 542 transitions, 9098 flow [2024-06-28 02:15:17,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8619, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9098, PETRI_PLACES=270, PETRI_TRANSITIONS=542} [2024-06-28 02:15:17,213 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-28 02:15:17,213 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 542 transitions, 9098 flow [2024-06-28 02:15:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:17,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:17,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:17,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:15:17,214 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:17,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash -222135779, now seen corresponding path program 3 times [2024-06-28 02:15:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:17,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844140843] [2024-06-28 02:15:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844140843] [2024-06-28 02:15:19,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844140843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:19,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893797776] [2024-06-28 02:15:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:19,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:19,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 542 transitions, 9098 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:19,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:19,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:19,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:23,670 INFO L124 PetriNetUnfolderBase]: 8172/12659 cut-off events. [2024-06-28 02:15:23,671 INFO L125 PetriNetUnfolderBase]: For 419202/419202 co-relation queries the response was YES. [2024-06-28 02:15:23,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97157 conditions, 12659 events. 8172/12659 cut-off events. For 419202/419202 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 82308 event pairs, 2146 based on Foata normal form. 2/12506 useless extension candidates. Maximal degree in co-relation 97030. Up to 11761 conditions per place. [2024-06-28 02:15:23,825 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 537 selfloop transitions, 44 changer transitions 0/589 dead transitions. [2024-06-28 02:15:23,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 589 transitions, 10682 flow [2024-06-28 02:15:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:15:23,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:15:23,827 INFO L175 Difference]: Start difference. First operand has 270 places, 542 transitions, 9098 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:15:23,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 589 transitions, 10682 flow [2024-06-28 02:15:24,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 589 transitions, 10591 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-28 02:15:24,799 INFO L231 Difference]: Finished difference. Result has 276 places, 549 transitions, 9312 flow [2024-06-28 02:15:24,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9007, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9312, PETRI_PLACES=276, PETRI_TRANSITIONS=549} [2024-06-28 02:15:24,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-28 02:15:24,800 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 549 transitions, 9312 flow [2024-06-28 02:15:24,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:24,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:24,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:15:24,801 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:24,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash -6314571, now seen corresponding path program 4 times [2024-06-28 02:15:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381037975] [2024-06-28 02:15:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381037975] [2024-06-28 02:15:27,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381037975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:27,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:27,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515565460] [2024-06-28 02:15:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:27,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:27,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:27,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 549 transitions, 9312 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:27,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:27,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:27,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:31,407 INFO L124 PetriNetUnfolderBase]: 8195/12696 cut-off events. [2024-06-28 02:15:31,407 INFO L125 PetriNetUnfolderBase]: For 436096/436096 co-relation queries the response was YES. [2024-06-28 02:15:31,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98966 conditions, 12696 events. 8195/12696 cut-off events. For 436096/436096 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 82647 event pairs, 2126 based on Foata normal form. 1/12542 useless extension candidates. Maximal degree in co-relation 98836. Up to 11732 conditions per place. [2024-06-28 02:15:31,578 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 531 selfloop transitions, 52 changer transitions 0/591 dead transitions. [2024-06-28 02:15:31,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 591 transitions, 10840 flow [2024-06-28 02:15:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:15:31,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 02:15:31,579 INFO L175 Difference]: Start difference. First operand has 276 places, 549 transitions, 9312 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:15:31,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 591 transitions, 10840 flow [2024-06-28 02:15:32,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 591 transitions, 10695 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:32,870 INFO L231 Difference]: Finished difference. Result has 281 places, 555 transitions, 9406 flow [2024-06-28 02:15:32,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9406, PETRI_PLACES=281, PETRI_TRANSITIONS=555} [2024-06-28 02:15:32,871 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-28 02:15:32,871 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 555 transitions, 9406 flow [2024-06-28 02:15:32,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:32,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:32,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:32,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:15:32,872 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:32,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2065852941, now seen corresponding path program 5 times [2024-06-28 02:15:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:32,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346318028] [2024-06-28 02:15:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346318028] [2024-06-28 02:15:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346318028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:35,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601486698] [2024-06-28 02:15:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:35,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:35,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:35,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 555 transitions, 9406 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:35,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:35,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:35,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:39,391 INFO L124 PetriNetUnfolderBase]: 8275/12789 cut-off events. [2024-06-28 02:15:39,392 INFO L125 PetriNetUnfolderBase]: For 454916/454916 co-relation queries the response was YES. [2024-06-28 02:15:39,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101213 conditions, 12789 events. 8275/12789 cut-off events. For 454916/454916 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 82852 event pairs, 1929 based on Foata normal form. 2/12628 useless extension candidates. Maximal degree in co-relation 101080. Up to 11752 conditions per place. [2024-06-28 02:15:39,563 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 519 selfloop transitions, 69 changer transitions 0/596 dead transitions. [2024-06-28 02:15:39,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 596 transitions, 11140 flow [2024-06-28 02:15:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:15:39,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:15:39,564 INFO L175 Difference]: Start difference. First operand has 281 places, 555 transitions, 9406 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:15:39,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 596 transitions, 11140 flow [2024-06-28 02:15:40,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 596 transitions, 11063 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:15:40,709 INFO L231 Difference]: Finished difference. Result has 286 places, 563 transitions, 9671 flow [2024-06-28 02:15:40,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9329, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9671, PETRI_PLACES=286, PETRI_TRANSITIONS=563} [2024-06-28 02:15:40,710 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-28 02:15:40,710 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 563 transitions, 9671 flow [2024-06-28 02:15:40,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:40,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:40,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:40,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:15:40,711 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:40,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1161940209, now seen corresponding path program 6 times [2024-06-28 02:15:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:40,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539237932] [2024-06-28 02:15:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:40,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539237932] [2024-06-28 02:15:42,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539237932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:42,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:42,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:42,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261690492] [2024-06-28 02:15:42,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:42,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:42,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:42,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:42,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:42,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:42,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 563 transitions, 9671 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:42,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:42,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:42,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:47,025 INFO L124 PetriNetUnfolderBase]: 8321/12868 cut-off events. [2024-06-28 02:15:47,030 INFO L125 PetriNetUnfolderBase]: For 475619/475619 co-relation queries the response was YES. [2024-06-28 02:15:47,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103497 conditions, 12868 events. 8321/12868 cut-off events. For 475619/475619 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 83560 event pairs, 1947 based on Foata normal form. 2/12703 useless extension candidates. Maximal degree in co-relation 103361. Up to 11901 conditions per place. [2024-06-28 02:15:47,222 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 525 selfloop transitions, 62 changer transitions 0/595 dead transitions. [2024-06-28 02:15:47,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 595 transitions, 11126 flow [2024-06-28 02:15:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 02:15:47,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-28 02:15:47,224 INFO L175 Difference]: Start difference. First operand has 286 places, 563 transitions, 9671 flow. Second operand 7 states and 158 transitions. [2024-06-28 02:15:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 595 transitions, 11126 flow [2024-06-28 02:15:48,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 595 transitions, 10982 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-28 02:15:48,438 INFO L231 Difference]: Finished difference. Result has 291 places, 566 transitions, 9742 flow [2024-06-28 02:15:48,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9547, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9742, PETRI_PLACES=291, PETRI_TRANSITIONS=566} [2024-06-28 02:15:48,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-28 02:15:48,439 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 566 transitions, 9742 flow [2024-06-28 02:15:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:48,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:48,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:48,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:15:48,440 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:48,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1766672689, now seen corresponding path program 7 times [2024-06-28 02:15:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:48,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038375619] [2024-06-28 02:15:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:48,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038375619] [2024-06-28 02:15:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038375619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:50,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:15:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668254277] [2024-06-28 02:15:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:15:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:15:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:15:50,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:15:50,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 566 transitions, 9742 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:50,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:50,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:15:50,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:55,137 INFO L124 PetriNetUnfolderBase]: 8955/13766 cut-off events. [2024-06-28 02:15:55,138 INFO L125 PetriNetUnfolderBase]: For 545033/545033 co-relation queries the response was YES. [2024-06-28 02:15:55,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113422 conditions, 13766 events. 8955/13766 cut-off events. For 545033/545033 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 89419 event pairs, 1839 based on Foata normal form. 2/13609 useless extension candidates. Maximal degree in co-relation 113284. Up to 11805 conditions per place. [2024-06-28 02:15:55,713 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 507 selfloop transitions, 189 changer transitions 0/704 dead transitions. [2024-06-28 02:15:55,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 704 transitions, 13155 flow [2024-06-28 02:15:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:15:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:15:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 02:15:55,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:15:55,715 INFO L175 Difference]: Start difference. First operand has 291 places, 566 transitions, 9742 flow. Second operand 9 states and 225 transitions. [2024-06-28 02:15:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 704 transitions, 13155 flow [2024-06-28 02:15:57,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 704 transitions, 12985 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:15:57,256 INFO L231 Difference]: Finished difference. Result has 298 places, 639 transitions, 11660 flow [2024-06-28 02:15:57,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9610, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11660, PETRI_PLACES=298, PETRI_TRANSITIONS=639} [2024-06-28 02:15:57,257 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-28 02:15:57,257 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 639 transitions, 11660 flow [2024-06-28 02:15:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 02:15:57,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:57,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:57,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:15:57,257 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:57,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -212602659, now seen corresponding path program 1 times [2024-06-28 02:15:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600360175] [2024-06-28 02:15:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600360175] [2024-06-28 02:16:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600360175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962925903] [2024-06-28 02:16:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:00,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 639 transitions, 11660 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:16:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:05,484 INFO L124 PetriNetUnfolderBase]: 9081/14307 cut-off events. [2024-06-28 02:16:05,484 INFO L125 PetriNetUnfolderBase]: For 631493/631571 co-relation queries the response was YES. [2024-06-28 02:16:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122287 conditions, 14307 events. 9081/14307 cut-off events. For 631493/631571 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 96927 event pairs, 2536 based on Foata normal form. 29/14096 useless extension candidates. Maximal degree in co-relation 122146. Up to 12380 conditions per place. [2024-06-28 02:16:05,700 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 634 selfloop transitions, 43 changer transitions 0/711 dead transitions. [2024-06-28 02:16:05,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 711 transitions, 13867 flow [2024-06-28 02:16:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:16:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 02:16:05,702 INFO L175 Difference]: Start difference. First operand has 298 places, 639 transitions, 11660 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:16:05,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 711 transitions, 13867 flow [2024-06-28 02:16:07,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 711 transitions, 13819 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 02:16:07,327 INFO L231 Difference]: Finished difference. Result has 307 places, 646 transitions, 11973 flow [2024-06-28 02:16:07,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11624, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11973, PETRI_PLACES=307, PETRI_TRANSITIONS=646} [2024-06-28 02:16:07,336 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-28 02:16:07,337 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 646 transitions, 11973 flow [2024-06-28 02:16:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:16:07,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:07,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:16:07,337 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:07,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1969426033, now seen corresponding path program 2 times [2024-06-28 02:16:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7232850] [2024-06-28 02:16:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:16:09,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7232850] [2024-06-28 02:16:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7232850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:09,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:09,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:16:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73546814] [2024-06-28 02:16:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:09,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:16:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:16:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:16:10,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:10,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 646 transitions, 11973 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:10,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:10,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:10,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:15,414 INFO L124 PetriNetUnfolderBase]: 9273/14586 cut-off events. [2024-06-28 02:16:15,414 INFO L125 PetriNetUnfolderBase]: For 657610/657688 co-relation queries the response was YES. [2024-06-28 02:16:15,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125476 conditions, 14586 events. 9273/14586 cut-off events. For 657610/657688 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 99137 event pairs, 2678 based on Foata normal form. 31/14388 useless extension candidates. Maximal degree in co-relation 125330. Up to 13046 conditions per place. [2024-06-28 02:16:15,634 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 644 selfloop transitions, 25 changer transitions 0/703 dead transitions. [2024-06-28 02:16:15,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 703 transitions, 13764 flow [2024-06-28 02:16:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:16:15,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:16:15,635 INFO L175 Difference]: Start difference. First operand has 307 places, 646 transitions, 11973 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:16:15,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 703 transitions, 13764 flow [2024-06-28 02:16:17,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 703 transitions, 13638 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 02:16:17,497 INFO L231 Difference]: Finished difference. Result has 314 places, 652 transitions, 12032 flow [2024-06-28 02:16:17,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11863, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12032, PETRI_PLACES=314, PETRI_TRANSITIONS=652} [2024-06-28 02:16:17,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 260 predicate places. [2024-06-28 02:16:17,498 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 652 transitions, 12032 flow [2024-06-28 02:16:17,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:16:17,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:16:17,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:16:17,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:16:17,498 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:16:17,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:16:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2030716215, now seen corresponding path program 3 times [2024-06-28 02:16:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:16:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505903595] [2024-06-28 02:16:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:16:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:16:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:16:20,706 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 02:16:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:16:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505903595] [2024-06-28 02:16:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505903595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:16:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:16:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:16:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320738016] [2024-06-28 02:16:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:16:20,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:16:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:16:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:16:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:16:20,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:16:20,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 652 transitions, 12032 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:16:20,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:16:20,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:16:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:16:25,910 INFO L124 PetriNetUnfolderBase]: 9442/14779 cut-off events. [2024-06-28 02:16:25,911 INFO L125 PetriNetUnfolderBase]: For 676311/676425 co-relation queries the response was YES. [2024-06-28 02:16:26,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127967 conditions, 14779 events. 9442/14779 cut-off events. For 676311/676425 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 100240 event pairs, 2764 based on Foata normal form. 34/14588 useless extension candidates. Maximal degree in co-relation 127817. Up to 13209 conditions per place. [2024-06-28 02:16:26,134 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 645 selfloop transitions, 24 changer transitions 0/703 dead transitions. [2024-06-28 02:16:26,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 703 transitions, 13831 flow [2024-06-28 02:16:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:16:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:16:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:16:26,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:16:26,136 INFO L175 Difference]: Start difference. First operand has 314 places, 652 transitions, 12032 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:16:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 703 transitions, 13831 flow