./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.opt.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/mix010.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix010.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:21:51,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:21:51,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:21:51,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:21:51,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:21:51,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:21:51,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:21:51,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:21:51,808 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:21:51,808 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:21:51,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:21:51,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:21:51,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:21:51,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:21:51,810 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:21:51,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:21:51,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:21:51,814 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:21:51,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:21:51,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:21:51,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:21:51,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:21:51,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:21:51,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:21:51,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:21:51,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:21:51,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:21:51,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:21:51,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:21:51,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:51,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:21:51,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:21:51,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:21:51,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:21:52,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:21:52,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:21:52,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:21:52,044 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:21:52,045 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:21:52,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.opt.yml/witness.yml [2024-06-28 01:21:52,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:21:52,228 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:21:52,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.opt.i [2024-06-28 01:21:53,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:21:53,402 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:21:53,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.opt.i [2024-06-28 01:21:53,417 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6baa76f12/b31b3dca2a494be28b6dc1a0b4ca2639/FLAG4770615f1 [2024-06-28 01:21:53,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6baa76f12/b31b3dca2a494be28b6dc1a0b4ca2639 [2024-06-28 01:21:53,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:21:53,427 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:21:53,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:53,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:21:53,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:21:53,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:52" (1/2) ... [2024-06-28 01:21:53,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca2427c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:52" (1/2) ... [2024-06-28 01:21:53,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@785c8bd6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:53" (2/2) ... [2024-06-28 01:21:53,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca2427c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:53, skipping insertion in model container [2024-06-28 01:21:53,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:53" (2/2) ... [2024-06-28 01:21:53,435 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:21:53,509 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:21:53,510 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 01:21:53,510 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 01:21:53,511 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 01:21:53,511 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:21:53,511 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:21:53,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:21:53,699 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/mix010.opt.i[944,957] [2024-06-28 01:21:53,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:53,880 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:21:53,917 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/mix010.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:21:53,990 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:54,019 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:21:54,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54 WrapperNode [2024-06-28 01:21:54,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:54,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:54,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:21:54,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:21:54,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,092 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-06-28 01:21:54,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:54,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:21:54,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:21:54,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:21:54,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,128 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:21:54,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:21:54,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:21:54,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:21:54,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:21:54,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (1/1) ... [2024-06-28 01:21:54,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:21:54,169 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 01:21:54,176 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 01:21:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:21:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:21:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:21:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:21:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:21:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:21:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:21:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:21:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:21:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:21:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:21:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:21:54,217 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 01:21:54,311 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:21:54,313 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:21:54,643 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:21:54,643 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:21:54,783 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:21:54,784 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:21:54,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:54 BoogieIcfgContainer [2024-06-28 01:21:54,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:21:54,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:21:54,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:21:54,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:21:54,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:52" (1/4) ... [2024-06-28 01:21:54,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252f8d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:54, skipping insertion in model container [2024-06-28 01:21:54,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:21:53" (2/4) ... [2024-06-28 01:21:54,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252f8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:21:54, skipping insertion in model container [2024-06-28 01:21:54,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:54" (3/4) ... [2024-06-28 01:21:54,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252f8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:21:54, skipping insertion in model container [2024-06-28 01:21:54,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:54" (4/4) ... [2024-06-28 01:21:54,792 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.opt.i [2024-06-28 01:21:54,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:21:54,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:21:54,806 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:21:54,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:21:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:21:54,900 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-28 01:21:54,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:21:54,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:21:54,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-28 01:21:54,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:21:54,925 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;@1748d9e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:21:54,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:21:54,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:21:54,930 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:21:54,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:54,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:54,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:54,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:54,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash 362658526, now seen corresponding path program 1 times [2024-06-28 01:21:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697529736] [2024-06-28 01:21:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:54,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697529736] [2024-06-28 01:21:55,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697529736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:55,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:55,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798568082] [2024-06-28 01:21:55,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:55,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-06-28 01:21:55,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 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 01:21:55,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:55,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-06-28 01:21:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:56,458 INFO L124 PetriNetUnfolderBase]: 2860/4838 cut-off events. [2024-06-28 01:21:56,459 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 01:21:56,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 4838 events. 2860/4838 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32254 event pairs, 2250 based on Foata normal form. 145/4587 useless extension candidates. Maximal degree in co-relation 9035. Up to 4134 conditions per place. [2024-06-28 01:21:56,483 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 40 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:21:56,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 225 flow [2024-06-28 01:21:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:21:56,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2024-06-28 01:21:56,493 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:21:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 225 flow [2024-06-28 01:21:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:56,497 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-28 01:21:56,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:21:56,500 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:21:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-28 01:21:56,501 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 01:21:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:21:56,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:56,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 623805891, now seen corresponding path program 1 times [2024-06-28 01:21:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142055307] [2024-06-28 01:21:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:57,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142055307] [2024-06-28 01:21:57,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142055307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:57,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:57,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:21:57,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874249681] [2024-06-28 01:21:57,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:57,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:21:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:21:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:21:57,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 01:21:57,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:57,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:57,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 01:21:57,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:57,784 INFO L124 PetriNetUnfolderBase]: 3263/5458 cut-off events. [2024-06-28 01:21:57,784 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2024-06-28 01:21:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11411 conditions, 5458 events. 3263/5458 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36376 event pairs, 2166 based on Foata normal form. 3/5097 useless extension candidates. Maximal degree in co-relation 11399. Up to 4679 conditions per place. [2024-06-28 01:21:57,811 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 52 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:21:57,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 321 flow [2024-06-28 01:21:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:21:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:21:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-28 01:21:57,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2024-06-28 01:21:57,816 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 4 states and 132 transitions. [2024-06-28 01:21:57,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 321 flow [2024-06-28 01:21:57,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:57,818 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 179 flow [2024-06-28 01:21:57,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:21:57,819 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 01:21:57,819 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 179 flow [2024-06-28 01:21:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:57,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:57,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:21:57,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:57,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -521631922, now seen corresponding path program 1 times [2024-06-28 01:21:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76184745] [2024-06-28 01:21:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:58,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76184745] [2024-06-28 01:21:58,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76184745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:58,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:58,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:58,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756943023] [2024-06-28 01:21:58,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:58,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:58,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:58,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:21:58,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:58,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:58,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:21:58,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:59,557 INFO L124 PetriNetUnfolderBase]: 4155/6073 cut-off events. [2024-06-28 01:21:59,558 INFO L125 PetriNetUnfolderBase]: For 2267/2267 co-relation queries the response was YES. [2024-06-28 01:21:59,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14821 conditions, 6073 events. 4155/6073 cut-off events. For 2267/2267 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34389 event pairs, 1220 based on Foata normal form. 6/5860 useless extension candidates. Maximal degree in co-relation 14807. Up to 5857 conditions per place. [2024-06-28 01:21:59,588 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 72 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 01:21:59,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 488 flow [2024-06-28 01:21:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-28 01:21:59,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360544217687075 [2024-06-28 01:21:59,590 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 179 flow. Second operand 6 states and 187 transitions. [2024-06-28 01:21:59,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 488 flow [2024-06-28 01:21:59,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 460 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:59,593 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 239 flow [2024-06-28 01:21:59,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 01:21:59,594 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 01:21:59,594 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 239 flow [2024-06-28 01:21:59,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:59,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:59,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:59,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:21:59,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:21:59,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -582442982, now seen corresponding path program 1 times [2024-06-28 01:21:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684729712] [2024-06-28 01:21:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:00,158 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 01:22:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:00,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684729712] [2024-06-28 01:22:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684729712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:00,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:00,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809628206] [2024-06-28 01:22:00,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:00,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:00,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:22:00,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 01:22:00,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:00,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:22:00,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:00,990 INFO L124 PetriNetUnfolderBase]: 4149/6250 cut-off events. [2024-06-28 01:22:00,990 INFO L125 PetriNetUnfolderBase]: For 4214/4214 co-relation queries the response was YES. [2024-06-28 01:22:01,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16376 conditions, 6250 events. 4149/6250 cut-off events. For 4214/4214 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 36537 event pairs, 1466 based on Foata normal form. 2/5986 useless extension candidates. Maximal degree in co-relation 16359. Up to 5921 conditions per place. [2024-06-28 01:22:01,024 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 62 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-28 01:22:01,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 453 flow [2024-06-28 01:22:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-28 01:22:01,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2024-06-28 01:22:01,026 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 239 flow. Second operand 5 states and 138 transitions. [2024-06-28 01:22:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 453 flow [2024-06-28 01:22:01,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 415 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:01,033 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 260 flow [2024-06-28 01:22:01,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-06-28 01:22:01,034 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 01:22:01,034 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 260 flow [2024-06-28 01:22:01,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 01:22:01,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:01,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:22:01,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:01,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -854411820, now seen corresponding path program 1 times [2024-06-28 01:22:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762325756] [2024-06-28 01:22:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762325756] [2024-06-28 01:22:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762325756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:01,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:01,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595399339] [2024-06-28 01:22:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:01,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:01,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:01,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:01,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:01,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:01,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:02,769 INFO L124 PetriNetUnfolderBase]: 4888/7299 cut-off events. [2024-06-28 01:22:02,769 INFO L125 PetriNetUnfolderBase]: For 6981/6981 co-relation queries the response was YES. [2024-06-28 01:22:02,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20286 conditions, 7299 events. 4888/7299 cut-off events. For 6981/6981 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 42532 event pairs, 1754 based on Foata normal form. 2/7018 useless extension candidates. Maximal degree in co-relation 20267. Up to 6939 conditions per place. [2024-06-28 01:22:02,802 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 72 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:22:02,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 528 flow [2024-06-28 01:22:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:22:02,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:22:02,805 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 260 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:22:02,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 528 flow [2024-06-28 01:22:02,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 499 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:02,814 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 304 flow [2024-06-28 01:22:02,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-28 01:22:02,816 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 01:22:02,820 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 304 flow [2024-06-28 01:22:02,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:02,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:02,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:02,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:22:02,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:02,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -877271844, now seen corresponding path program 1 times [2024-06-28 01:22:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232935711] [2024-06-28 01:22:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,894 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 01:22:02,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232935711] [2024-06-28 01:22:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232935711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:22:02,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992278366] [2024-06-28 01:22:02,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:22:02,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:22:02,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:22:02,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2024-06-28 01:22:02,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:02,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2024-06-28 01:22:02,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:03,141 INFO L124 PetriNetUnfolderBase]: 1231/2774 cut-off events. [2024-06-28 01:22:03,142 INFO L125 PetriNetUnfolderBase]: For 3426/3827 co-relation queries the response was YES. [2024-06-28 01:22:03,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6229 conditions, 2774 events. 1231/2774 cut-off events. For 3426/3827 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23392 event pairs, 460 based on Foata normal form. 2/2544 useless extension candidates. Maximal degree in co-relation 6210. Up to 1665 conditions per place. [2024-06-28 01:22:03,157 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 26 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-06-28 01:22:03,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 338 flow [2024-06-28 01:22:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:22:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:22:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-28 01:22:03,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7482993197278912 [2024-06-28 01:22:03,158 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 304 flow. Second operand 3 states and 110 transitions. [2024-06-28 01:22:03,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 338 flow [2024-06-28 01:22:03,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 308 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:03,161 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 240 flow [2024-06-28 01:22:03,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 01:22:03,163 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 01:22:03,163 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 240 flow [2024-06-28 01:22:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:03,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:03,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:03,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:22:03,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:03,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1387617671, now seen corresponding path program 1 times [2024-06-28 01:22:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791944580] [2024-06-28 01:22:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791944580] [2024-06-28 01:22:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791944580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467222304] [2024-06-28 01:22:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:03,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:03,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:03,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:03,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:03,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:04,799 INFO L124 PetriNetUnfolderBase]: 4647/6837 cut-off events. [2024-06-28 01:22:04,800 INFO L125 PetriNetUnfolderBase]: For 12071/12077 co-relation queries the response was YES. [2024-06-28 01:22:04,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19667 conditions, 6837 events. 4647/6837 cut-off events. For 12071/12077 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38571 event pairs, 1549 based on Foata normal form. 6/6834 useless extension candidates. Maximal degree in co-relation 19648. Up to 6563 conditions per place. [2024-06-28 01:22:04,836 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 73 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 01:22:04,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 562 flow [2024-06-28 01:22:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-28 01:22:04,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-06-28 01:22:04,837 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 240 flow. Second operand 6 states and 164 transitions. [2024-06-28 01:22:04,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 562 flow [2024-06-28 01:22:04,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:04,843 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 310 flow [2024-06-28 01:22:04,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-28 01:22:04,844 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-28 01:22:04,844 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 310 flow [2024-06-28 01:22:04,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:04,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:04,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:04,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:22:04,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:04,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash -694625381, now seen corresponding path program 2 times [2024-06-28 01:22:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:04,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315422352] [2024-06-28 01:22:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:05,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:05,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315422352] [2024-06-28 01:22:05,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315422352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:05,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:05,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:05,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369210367] [2024-06-28 01:22:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:05,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:05,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:05,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:05,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:05,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:05,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:05,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:06,496 INFO L124 PetriNetUnfolderBase]: 4642/6831 cut-off events. [2024-06-28 01:22:06,496 INFO L125 PetriNetUnfolderBase]: For 14464/14469 co-relation queries the response was YES. [2024-06-28 01:22:06,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20657 conditions, 6831 events. 4642/6831 cut-off events. For 14464/14469 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38581 event pairs, 1552 based on Foata normal form. 6/6828 useless extension candidates. Maximal degree in co-relation 20636. Up to 6558 conditions per place. [2024-06-28 01:22:06,527 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 68 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-28 01:22:06,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 546 flow [2024-06-28 01:22:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 01:22:06,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-28 01:22:06,529 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 310 flow. Second operand 6 states and 159 transitions. [2024-06-28 01:22:06,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 546 flow [2024-06-28 01:22:06,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 512 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:06,538 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 316 flow [2024-06-28 01:22:06,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-06-28 01:22:06,539 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-28 01:22:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 316 flow [2024-06-28 01:22:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 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 01:22:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:06,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:22:06,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:06,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash -716960695, now seen corresponding path program 1 times [2024-06-28 01:22:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:06,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745451818] [2024-06-28 01:22:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:07,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745451818] [2024-06-28 01:22:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745451818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:07,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:07,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000104758] [2024-06-28 01:22:07,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:07,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:07,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:07,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:07,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:07,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:08,129 INFO L124 PetriNetUnfolderBase]: 4197/6369 cut-off events. [2024-06-28 01:22:08,129 INFO L125 PetriNetUnfolderBase]: For 13068/13068 co-relation queries the response was YES. [2024-06-28 01:22:08,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18919 conditions, 6369 events. 4197/6369 cut-off events. For 13068/13068 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36935 event pairs, 1357 based on Foata normal form. 4/6361 useless extension candidates. Maximal degree in co-relation 18896. Up to 5934 conditions per place. [2024-06-28 01:22:08,164 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 79 selfloop transitions, 14 changer transitions 5/109 dead transitions. [2024-06-28 01:22:08,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 626 flow [2024-06-28 01:22:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:22:08,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-28 01:22:08,166 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 316 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:22:08,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 626 flow [2024-06-28 01:22:08,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 582 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:08,176 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 336 flow [2024-06-28 01:22:08,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-28 01:22:08,177 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 01:22:08,177 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 336 flow [2024-06-28 01:22:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:08,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:08,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:08,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:22:08,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:08,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash -66593079, now seen corresponding path program 1 times [2024-06-28 01:22:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:08,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197936950] [2024-06-28 01:22:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:08,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197936950] [2024-06-28 01:22:08,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197936950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:08,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:08,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231368506] [2024-06-28 01:22:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:08,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:09,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:09,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:09,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:09,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:09,855 INFO L124 PetriNetUnfolderBase]: 4069/6013 cut-off events. [2024-06-28 01:22:09,855 INFO L125 PetriNetUnfolderBase]: For 17939/17939 co-relation queries the response was YES. [2024-06-28 01:22:09,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19366 conditions, 6013 events. 4069/6013 cut-off events. For 17939/17939 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33588 event pairs, 1288 based on Foata normal form. 2/6013 useless extension candidates. Maximal degree in co-relation 19343. Up to 5774 conditions per place. [2024-06-28 01:22:09,879 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 86 selfloop transitions, 14 changer transitions 0/112 dead transitions. [2024-06-28 01:22:09,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 658 flow [2024-06-28 01:22:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:22:09,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-28 01:22:09,881 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 336 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:22:09,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 658 flow [2024-06-28 01:22:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 616 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:09,888 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 362 flow [2024-06-28 01:22:09,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-28 01:22:09,889 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 01:22:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 362 flow [2024-06-28 01:22:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:09,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:09,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:09,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:22:09,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:09,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash -66473109, now seen corresponding path program 2 times [2024-06-28 01:22:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:09,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587590696] [2024-06-28 01:22:09,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587590696] [2024-06-28 01:22:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587590696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503067744] [2024-06-28 01:22:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:10,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:10,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:10,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:11,539 INFO L124 PetriNetUnfolderBase]: 4090/6062 cut-off events. [2024-06-28 01:22:11,539 INFO L125 PetriNetUnfolderBase]: For 22448/22454 co-relation queries the response was YES. [2024-06-28 01:22:11,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20468 conditions, 6062 events. 4090/6062 cut-off events. For 22448/22454 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34037 event pairs, 1294 based on Foata normal form. 6/6064 useless extension candidates. Maximal degree in co-relation 20444. Up to 5717 conditions per place. [2024-06-28 01:22:11,571 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 79 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-06-28 01:22:11,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 764 flow [2024-06-28 01:22:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:22:11,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2024-06-28 01:22:11,574 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 362 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:22:11,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 764 flow [2024-06-28 01:22:11,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 117 transitions, 720 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:11,584 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 448 flow [2024-06-28 01:22:11,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-06-28 01:22:11,584 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-28 01:22:11,584 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 448 flow [2024-06-28 01:22:11,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:11,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:11,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:11,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:22:11,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:11,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash -757618253, now seen corresponding path program 1 times [2024-06-28 01:22:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:11,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961507421] [2024-06-28 01:22:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:12,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961507421] [2024-06-28 01:22:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961507421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:12,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:12,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:12,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433262484] [2024-06-28 01:22:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:12,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:12,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:12,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:12,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:12,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:13,245 INFO L124 PetriNetUnfolderBase]: 4356/6343 cut-off events. [2024-06-28 01:22:13,246 INFO L125 PetriNetUnfolderBase]: For 27952/27958 co-relation queries the response was YES. [2024-06-28 01:22:13,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 6343 events. 4356/6343 cut-off events. For 27952/27958 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34651 event pairs, 1408 based on Foata normal form. 6/6343 useless extension candidates. Maximal degree in co-relation 22442. Up to 6095 conditions per place. [2024-06-28 01:22:13,277 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 90 selfloop transitions, 23 changer transitions 0/123 dead transitions. [2024-06-28 01:22:13,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 123 transitions, 862 flow [2024-06-28 01:22:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 01:22:13,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276967930029155 [2024-06-28 01:22:13,279 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 448 flow. Second operand 7 states and 181 transitions. [2024-06-28 01:22:13,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 123 transitions, 862 flow [2024-06-28 01:22:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 123 transitions, 820 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:13,305 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 522 flow [2024-06-28 01:22:13,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-06-28 01:22:13,305 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 01:22:13,306 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 522 flow [2024-06-28 01:22:13,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:13,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:13,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:13,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:22:13,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:13,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -58548413, now seen corresponding path program 2 times [2024-06-28 01:22:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657009310] [2024-06-28 01:22:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:13,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:14,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657009310] [2024-06-28 01:22:14,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657009310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:14,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:14,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110971585] [2024-06-28 01:22:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:14,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:14,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 522 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:14,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:14,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:14,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,988 INFO L124 PetriNetUnfolderBase]: 4379/6370 cut-off events. [2024-06-28 01:22:14,989 INFO L125 PetriNetUnfolderBase]: For 32798/32803 co-relation queries the response was YES. [2024-06-28 01:22:15,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23717 conditions, 6370 events. 4379/6370 cut-off events. For 32798/32803 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34715 event pairs, 1403 based on Foata normal form. 6/6372 useless extension candidates. Maximal degree in co-relation 23690. Up to 6119 conditions per place. [2024-06-28 01:22:15,020 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 87 selfloop transitions, 26 changer transitions 0/123 dead transitions. [2024-06-28 01:22:15,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 910 flow [2024-06-28 01:22:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:22:15,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-06-28 01:22:15,022 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 522 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:22:15,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 910 flow [2024-06-28 01:22:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 123 transitions, 874 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:15,041 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 580 flow [2024-06-28 01:22:15,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=580, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-06-28 01:22:15,042 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-28 01:22:15,042 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 580 flow [2024-06-28 01:22:15,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:15,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:15,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:15,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:22:15,042 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:15,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -751189349, now seen corresponding path program 3 times [2024-06-28 01:22:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:15,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175716426] [2024-06-28 01:22:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:15,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175716426] [2024-06-28 01:22:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175716426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:15,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:15,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000723275] [2024-06-28 01:22:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:15,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:15,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:15,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:15,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:15,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:16,794 INFO L124 PetriNetUnfolderBase]: 4141/6128 cut-off events. [2024-06-28 01:22:16,794 INFO L125 PetriNetUnfolderBase]: For 35492/35492 co-relation queries the response was YES. [2024-06-28 01:22:16,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23099 conditions, 6128 events. 4141/6128 cut-off events. For 35492/35492 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34289 event pairs, 1298 based on Foata normal form. 2/6123 useless extension candidates. Maximal degree in co-relation 23070. Up to 5767 conditions per place. [2024-06-28 01:22:16,831 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 80 selfloop transitions, 26 changer transitions 0/121 dead transitions. [2024-06-28 01:22:16,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 872 flow [2024-06-28 01:22:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:22:16,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:22:16,832 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 580 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:22:16,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 872 flow [2024-06-28 01:22:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 121 transitions, 778 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:16,855 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 546 flow [2024-06-28 01:22:16,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-06-28 01:22:16,855 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-28 01:22:16,855 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 546 flow [2024-06-28 01:22:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:16,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:22:16,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:16,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 110895747, now seen corresponding path program 3 times [2024-06-28 01:22:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469945908] [2024-06-28 01:22:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:17,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:17,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469945908] [2024-06-28 01:22:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469945908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:17,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658869273] [2024-06-28 01:22:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:17,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:17,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:17,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:17,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:17,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:17,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:17,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:18,469 INFO L124 PetriNetUnfolderBase]: 4369/6354 cut-off events. [2024-06-28 01:22:18,470 INFO L125 PetriNetUnfolderBase]: For 38134/38139 co-relation queries the response was YES. [2024-06-28 01:22:18,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 6354 events. 4369/6354 cut-off events. For 38134/38139 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34536 event pairs, 1403 based on Foata normal form. 6/6356 useless extension candidates. Maximal degree in co-relation 24108. Up to 6107 conditions per place. [2024-06-28 01:22:18,501 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 84 selfloop transitions, 27 changer transitions 0/121 dead transitions. [2024-06-28 01:22:18,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 848 flow [2024-06-28 01:22:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:22:18,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:22:18,503 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 546 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:22:18,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 848 flow [2024-06-28 01:22:18,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 764 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:18,523 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 524 flow [2024-06-28 01:22:18,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-06-28 01:22:18,524 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-28 01:22:18,524 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 524 flow [2024-06-28 01:22:18,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:18,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:18,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:22:18,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:18,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1245742655, now seen corresponding path program 1 times [2024-06-28 01:22:18,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:18,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549416670] [2024-06-28 01:22:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:19,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:19,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549416670] [2024-06-28 01:22:19,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549416670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:22:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243049306] [2024-06-28 01:22:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:22:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:22:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:22:19,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:19,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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 01:22:19,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:19,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:19,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:19,800 INFO L124 PetriNetUnfolderBase]: 3279/5836 cut-off events. [2024-06-28 01:22:19,800 INFO L125 PetriNetUnfolderBase]: For 35342/35358 co-relation queries the response was YES. [2024-06-28 01:22:19,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20184 conditions, 5836 events. 3279/5836 cut-off events. For 35342/35358 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40670 event pairs, 1483 based on Foata normal form. 5/5659 useless extension candidates. Maximal degree in co-relation 20153. Up to 4730 conditions per place. [2024-06-28 01:22:19,850 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2024-06-28 01:22:19,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 769 flow [2024-06-28 01:22:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:22:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:22:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 01:22:19,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-06-28 01:22:19,865 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 524 flow. Second operand 5 states and 131 transitions. [2024-06-28 01:22:19,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 769 flow [2024-06-28 01:22:19,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 701 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:19,885 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 544 flow [2024-06-28 01:22:19,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-28 01:22:19,885 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-28 01:22:19,885 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 544 flow [2024-06-28 01:22:19,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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 01:22:19,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:19,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:19,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:22:19,886 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:19,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2060808611, now seen corresponding path program 1 times [2024-06-28 01:22:19,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:19,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337818767] [2024-06-28 01:22:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337818767] [2024-06-28 01:22:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337818767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:20,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063569994] [2024-06-28 01:22:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:20,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:20,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:20,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:20,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:20,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 544 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:20,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:20,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:20,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:21,770 INFO L124 PetriNetUnfolderBase]: 4394/7147 cut-off events. [2024-06-28 01:22:21,770 INFO L125 PetriNetUnfolderBase]: For 46136/46136 co-relation queries the response was YES. [2024-06-28 01:22:21,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26358 conditions, 7147 events. 4394/7147 cut-off events. For 46136/46136 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 45260 event pairs, 1633 based on Foata normal form. 2/6906 useless extension candidates. Maximal degree in co-relation 26325. Up to 6204 conditions per place. [2024-06-28 01:22:21,806 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 114 selfloop transitions, 20 changer transitions 0/144 dead transitions. [2024-06-28 01:22:21,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 144 transitions, 968 flow [2024-06-28 01:22:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:22:21,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-28 01:22:21,808 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 544 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:22:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 144 transitions, 968 flow [2024-06-28 01:22:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 945 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:21,826 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 611 flow [2024-06-28 01:22:21,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-06-28 01:22:21,826 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-28 01:22:21,826 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 611 flow [2024-06-28 01:22:21,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:21,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:21,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:21,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:22:21,827 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:21,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:21,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2034267130, now seen corresponding path program 1 times [2024-06-28 01:22:21,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:21,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78396960] [2024-06-28 01:22:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:21,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78396960] [2024-06-28 01:22:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78396960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:22,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:22,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608714018] [2024-06-28 01:22:22,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:22,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:22,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:22,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:22,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:22,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:23,794 INFO L124 PetriNetUnfolderBase]: 4440/7097 cut-off events. [2024-06-28 01:22:23,794 INFO L125 PetriNetUnfolderBase]: For 53735/53741 co-relation queries the response was YES. [2024-06-28 01:22:23,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27640 conditions, 7097 events. 4440/7097 cut-off events. For 53735/53741 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 43906 event pairs, 1446 based on Foata normal form. 5/6888 useless extension candidates. Maximal degree in co-relation 27605. Up to 6071 conditions per place. [2024-06-28 01:22:23,839 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 109 selfloop transitions, 34 changer transitions 0/153 dead transitions. [2024-06-28 01:22:23,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 153 transitions, 1153 flow [2024-06-28 01:22:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:22:23,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 01:22:23,840 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 611 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:22:23,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 153 transitions, 1153 flow [2024-06-28 01:22:23,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 153 transitions, 1087 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:23,866 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 695 flow [2024-06-28 01:22:23,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=695, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-06-28 01:22:23,868 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-28 01:22:23,868 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 695 flow [2024-06-28 01:22:23,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:23,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:23,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:22:23,868 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:23,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2060658881, now seen corresponding path program 2 times [2024-06-28 01:22:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:23,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676162407] [2024-06-28 01:22:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:23,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676162407] [2024-06-28 01:22:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676162407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:24,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471768817] [2024-06-28 01:22:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:24,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:24,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 695 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:24,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:25,774 INFO L124 PetriNetUnfolderBase]: 4491/7166 cut-off events. [2024-06-28 01:22:25,774 INFO L125 PetriNetUnfolderBase]: For 61836/61839 co-relation queries the response was YES. [2024-06-28 01:22:25,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29184 conditions, 7166 events. 4491/7166 cut-off events. For 61836/61839 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 44195 event pairs, 1522 based on Foata normal form. 4/6962 useless extension candidates. Maximal degree in co-relation 29148. Up to 6113 conditions per place. [2024-06-28 01:22:25,819 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 105 selfloop transitions, 46 changer transitions 0/161 dead transitions. [2024-06-28 01:22:25,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 1385 flow [2024-06-28 01:22:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:22:25,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 01:22:25,822 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 695 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:22:25,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 1385 flow [2024-06-28 01:22:25,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 161 transitions, 1335 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:25,856 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 883 flow [2024-06-28 01:22:25,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=883, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-06-28 01:22:25,857 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 01:22:25,857 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 883 flow [2024-06-28 01:22:25,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:25,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:25,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:25,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:22:25,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:25,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash 563506441, now seen corresponding path program 3 times [2024-06-28 01:22:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:25,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205123288] [2024-06-28 01:22:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205123288] [2024-06-28 01:22:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205123288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:26,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:26,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012578429] [2024-06-28 01:22:26,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:26,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:26,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 883 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:26,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:26,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:26,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:27,778 INFO L124 PetriNetUnfolderBase]: 4486/7157 cut-off events. [2024-06-28 01:22:27,778 INFO L125 PetriNetUnfolderBase]: For 69383/69386 co-relation queries the response was YES. [2024-06-28 01:22:27,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 7157 events. 4486/7157 cut-off events. For 69383/69386 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 44143 event pairs, 1514 based on Foata normal form. 4/6951 useless extension candidates. Maximal degree in co-relation 30205. Up to 6108 conditions per place. [2024-06-28 01:22:27,815 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 104 selfloop transitions, 45 changer transitions 0/159 dead transitions. [2024-06-28 01:22:27,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 159 transitions, 1371 flow [2024-06-28 01:22:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:22:27,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-28 01:22:27,816 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 883 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:22:27,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 159 transitions, 1371 flow [2024-06-28 01:22:27,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1285 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:27,855 INFO L231 Difference]: Finished difference. Result has 104 places, 111 transitions, 895 flow [2024-06-28 01:22:27,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=895, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2024-06-28 01:22:27,856 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 49 predicate places. [2024-06-28 01:22:27,856 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 111 transitions, 895 flow [2024-06-28 01:22:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:27,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:27,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:22:27,857 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:27,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1815004651, now seen corresponding path program 4 times [2024-06-28 01:22:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921390535] [2024-06-28 01:22:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:27,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:28,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921390535] [2024-06-28 01:22:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921390535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:28,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:28,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4137459] [2024-06-28 01:22:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:28,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:28,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:28,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 895 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:28,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:28,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:28,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,738 INFO L124 PetriNetUnfolderBase]: 4509/6728 cut-off events. [2024-06-28 01:22:29,739 INFO L125 PetriNetUnfolderBase]: For 73766/73766 co-relation queries the response was YES. [2024-06-28 01:22:29,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30399 conditions, 6728 events. 4509/6728 cut-off events. For 73766/73766 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38314 event pairs, 1370 based on Foata normal form. 2/6674 useless extension candidates. Maximal degree in co-relation 30359. Up to 6132 conditions per place. [2024-06-28 01:22:29,782 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 100 selfloop transitions, 49 changer transitions 0/159 dead transitions. [2024-06-28 01:22:29,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 159 transitions, 1435 flow [2024-06-28 01:22:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:22:29,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-28 01:22:29,784 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 895 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:22:29,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 159 transitions, 1435 flow [2024-06-28 01:22:29,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 159 transitions, 1319 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:29,822 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 941 flow [2024-06-28 01:22:29,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-06-28 01:22:29,823 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-28 01:22:29,823 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 941 flow [2024-06-28 01:22:29,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:29,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:29,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:29,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:22:29,823 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:29,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1804673974, now seen corresponding path program 2 times [2024-06-28 01:22:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576790327] [2024-06-28 01:22:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:30,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576790327] [2024-06-28 01:22:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576790327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:30,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:30,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354636486] [2024-06-28 01:22:30,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:30,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:30,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:30,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 941 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:30,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:30,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,875 INFO L124 PetriNetUnfolderBase]: 4611/6878 cut-off events. [2024-06-28 01:22:31,875 INFO L125 PetriNetUnfolderBase]: For 81205/81210 co-relation queries the response was YES. [2024-06-28 01:22:31,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31476 conditions, 6878 events. 4611/6878 cut-off events. For 81205/81210 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39244 event pairs, 1271 based on Foata normal form. 8/6834 useless extension candidates. Maximal degree in co-relation 31435. Up to 6253 conditions per place. [2024-06-28 01:22:31,923 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 119 selfloop transitions, 41 changer transitions 0/170 dead transitions. [2024-06-28 01:22:31,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 1619 flow [2024-06-28 01:22:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:22:31,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:22:31,924 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 941 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:22:31,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 1619 flow [2024-06-28 01:22:31,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 1466 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:31,968 INFO L231 Difference]: Finished difference. Result has 107 places, 120 transitions, 958 flow [2024-06-28 01:22:31,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=107, PETRI_TRANSITIONS=120} [2024-06-28 01:22:31,968 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-28 01:22:31,968 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 120 transitions, 958 flow [2024-06-28 01:22:31,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:31,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:31,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:22:31,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:31,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1916768351, now seen corresponding path program 5 times [2024-06-28 01:22:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774356850] [2024-06-28 01:22:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774356850] [2024-06-28 01:22:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774356850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024474871] [2024-06-28 01:22:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:32,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:32,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 120 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:32,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:32,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:32,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:33,924 INFO L124 PetriNetUnfolderBase]: 4634/6931 cut-off events. [2024-06-28 01:22:33,924 INFO L125 PetriNetUnfolderBase]: For 85828/85828 co-relation queries the response was YES. [2024-06-28 01:22:33,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31860 conditions, 6931 events. 4634/6931 cut-off events. For 85828/85828 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39649 event pairs, 1384 based on Foata normal form. 2/6873 useless extension candidates. Maximal degree in co-relation 31818. Up to 6298 conditions per place. [2024-06-28 01:22:33,972 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 51 changer transitions 0/168 dead transitions. [2024-06-28 01:22:33,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1510 flow [2024-06-28 01:22:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:22:33,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-28 01:22:33,973 INFO L175 Difference]: Start difference. First operand has 107 places, 120 transitions, 958 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:22:33,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1510 flow [2024-06-28 01:22:34,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 168 transitions, 1418 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:34,020 INFO L231 Difference]: Finished difference. Result has 111 places, 123 transitions, 1018 flow [2024-06-28 01:22:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1018, PETRI_PLACES=111, PETRI_TRANSITIONS=123} [2024-06-28 01:22:34,021 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 01:22:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 123 transitions, 1018 flow [2024-06-28 01:22:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:22:34,021 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash -864548840, now seen corresponding path program 3 times [2024-06-28 01:22:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024487162] [2024-06-28 01:22:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,818 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 01:22:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024487162] [2024-06-28 01:22:34,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024487162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:34,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876373154] [2024-06-28 01:22:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:34,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:34,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:34,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 123 transitions, 1018 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:34,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:34,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:36,026 INFO L124 PetriNetUnfolderBase]: 4624/6913 cut-off events. [2024-06-28 01:22:36,027 INFO L125 PetriNetUnfolderBase]: For 89442/89447 co-relation queries the response was YES. [2024-06-28 01:22:36,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31769 conditions, 6913 events. 4624/6913 cut-off events. For 89442/89447 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 39638 event pairs, 1273 based on Foata normal form. 8/6866 useless extension candidates. Maximal degree in co-relation 31726. Up to 6277 conditions per place. [2024-06-28 01:22:36,075 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 121 selfloop transitions, 40 changer transitions 0/171 dead transitions. [2024-06-28 01:22:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1544 flow [2024-06-28 01:22:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:22:36,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-28 01:22:36,077 INFO L175 Difference]: Start difference. First operand has 111 places, 123 transitions, 1018 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:22:36,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1544 flow [2024-06-28 01:22:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1416 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:36,197 INFO L231 Difference]: Finished difference. Result has 114 places, 123 transitions, 978 flow [2024-06-28 01:22:36,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=978, PETRI_PLACES=114, PETRI_TRANSITIONS=123} [2024-06-28 01:22:36,197 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-28 01:22:36,197 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 123 transitions, 978 flow [2024-06-28 01:22:36,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:36,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:36,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:22:36,198 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:36,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -856930280, now seen corresponding path program 4 times [2024-06-28 01:22:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466227442] [2024-06-28 01:22:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466227442] [2024-06-28 01:22:37,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466227442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:37,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:37,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:37,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21735145] [2024-06-28 01:22:37,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:37,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:37,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:37,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:37,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 123 transitions, 978 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:37,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:37,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:37,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:38,249 INFO L124 PetriNetUnfolderBase]: 4614/6902 cut-off events. [2024-06-28 01:22:38,250 INFO L125 PetriNetUnfolderBase]: For 93397/93402 co-relation queries the response was YES. [2024-06-28 01:22:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31750 conditions, 6902 events. 4614/6902 cut-off events. For 93397/93402 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39632 event pairs, 1270 based on Foata normal form. 8/6854 useless extension candidates. Maximal degree in co-relation 31706. Up to 6269 conditions per place. [2024-06-28 01:22:38,292 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 115 selfloop transitions, 43 changer transitions 0/168 dead transitions. [2024-06-28 01:22:38,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 168 transitions, 1406 flow [2024-06-28 01:22:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:22:38,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-28 01:22:38,293 INFO L175 Difference]: Start difference. First operand has 114 places, 123 transitions, 978 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:22:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 168 transitions, 1406 flow [2024-06-28 01:22:38,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 168 transitions, 1261 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:38,334 INFO L231 Difference]: Finished difference. Result has 114 places, 123 transitions, 927 flow [2024-06-28 01:22:38,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=114, PETRI_TRANSITIONS=123} [2024-06-28 01:22:38,335 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-28 01:22:38,335 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 123 transitions, 927 flow [2024-06-28 01:22:38,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:38,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:38,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:38,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:22:38,335 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:38,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1804674191, now seen corresponding path program 6 times [2024-06-28 01:22:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196881403] [2024-06-28 01:22:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:38,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196881403] [2024-06-28 01:22:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196881403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607789406] [2024-06-28 01:22:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:39,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:39,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 123 transitions, 927 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:39,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:39,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:40,268 INFO L124 PetriNetUnfolderBase]: 4609/6909 cut-off events. [2024-06-28 01:22:40,269 INFO L125 PetriNetUnfolderBase]: For 96968/96968 co-relation queries the response was YES. [2024-06-28 01:22:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31761 conditions, 6909 events. 4609/6909 cut-off events. For 96968/96968 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39695 event pairs, 1383 based on Foata normal form. 2/6846 useless extension candidates. Maximal degree in co-relation 31716. Up to 6265 conditions per place. [2024-06-28 01:22:40,317 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 102 selfloop transitions, 54 changer transitions 0/166 dead transitions. [2024-06-28 01:22:40,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 166 transitions, 1347 flow [2024-06-28 01:22:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:22:40,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-28 01:22:40,318 INFO L175 Difference]: Start difference. First operand has 114 places, 123 transitions, 927 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:22:40,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 166 transitions, 1347 flow [2024-06-28 01:22:40,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 166 transitions, 1227 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:40,373 INFO L231 Difference]: Finished difference. Result has 115 places, 123 transitions, 923 flow [2024-06-28 01:22:40,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=923, PETRI_PLACES=115, PETRI_TRANSITIONS=123} [2024-06-28 01:22:40,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-28 01:22:40,373 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 123 transitions, 923 flow [2024-06-28 01:22:40,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:40,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:40,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:40,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:22:40,374 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:40,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 36684716, now seen corresponding path program 1 times [2024-06-28 01:22:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696824480] [2024-06-28 01:22:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:40,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696824480] [2024-06-28 01:22:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696824480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134509607] [2024-06-28 01:22:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:41,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:41,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:41,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:22:41,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 123 transitions, 923 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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 01:22:41,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:41,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:22:41,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,124 INFO L124 PetriNetUnfolderBase]: 3473/5928 cut-off events. [2024-06-28 01:22:42,124 INFO L125 PetriNetUnfolderBase]: For 86272/86307 co-relation queries the response was YES. [2024-06-28 01:22:42,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25781 conditions, 5928 events. 3473/5928 cut-off events. For 86272/86307 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39790 event pairs, 1455 based on Foata normal form. 12/5820 useless extension candidates. Maximal degree in co-relation 25735. Up to 4919 conditions per place. [2024-06-28 01:22:42,172 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 100 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2024-06-28 01:22:42,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 145 transitions, 1217 flow [2024-06-28 01:22:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:22:42,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-28 01:22:42,174 INFO L175 Difference]: Start difference. First operand has 115 places, 123 transitions, 923 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:22:42,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 145 transitions, 1217 flow [2024-06-28 01:22:42,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 145 transitions, 1085 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:42,232 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 851 flow [2024-06-28 01:22:42,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=851, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-06-28 01:22:42,233 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-28 01:22:42,233 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 851 flow [2024-06-28 01:22:42,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 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 01:22:42,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:42,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:42,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:22:42,233 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:42,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash 425760008, now seen corresponding path program 1 times [2024-06-28 01:22:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954110219] [2024-06-28 01:22:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:42,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954110219] [2024-06-28 01:22:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954110219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:43,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339044948] [2024-06-28 01:22:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:43,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:43,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:43,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 851 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:43,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:43,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:44,291 INFO L124 PetriNetUnfolderBase]: 4452/7323 cut-off events. [2024-06-28 01:22:44,291 INFO L125 PetriNetUnfolderBase]: For 111444/111458 co-relation queries the response was YES. [2024-06-28 01:22:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32539 conditions, 7323 events. 4452/7323 cut-off events. For 111444/111458 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 47111 event pairs, 1078 based on Foata normal form. 6/7093 useless extension candidates. Maximal degree in co-relation 32492. Up to 6140 conditions per place. [2024-06-28 01:22:44,344 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 146 selfloop transitions, 23 changer transitions 0/190 dead transitions. [2024-06-28 01:22:44,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 190 transitions, 1513 flow [2024-06-28 01:22:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:22:44,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:22:44,345 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 851 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:22:44,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 190 transitions, 1513 flow [2024-06-28 01:22:44,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 190 transitions, 1475 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:44,397 INFO L231 Difference]: Finished difference. Result has 118 places, 130 transitions, 946 flow [2024-06-28 01:22:44,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=946, PETRI_PLACES=118, PETRI_TRANSITIONS=130} [2024-06-28 01:22:44,397 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-28 01:22:44,398 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 130 transitions, 946 flow [2024-06-28 01:22:44,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:44,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:44,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:44,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:22:44,398 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:44,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash 425820458, now seen corresponding path program 2 times [2024-06-28 01:22:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142181463] [2024-06-28 01:22:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:44,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142181463] [2024-06-28 01:22:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142181463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:45,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:45,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181356197] [2024-06-28 01:22:45,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:45,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:45,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:45,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 130 transitions, 946 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:45,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:45,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:45,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:46,366 INFO L124 PetriNetUnfolderBase]: 4444/7325 cut-off events. [2024-06-28 01:22:46,366 INFO L125 PetriNetUnfolderBase]: For 119156/119170 co-relation queries the response was YES. [2024-06-28 01:22:46,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33063 conditions, 7325 events. 4444/7325 cut-off events. For 119156/119170 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 47284 event pairs, 1434 based on Foata normal form. 6/7090 useless extension candidates. Maximal degree in co-relation 33015. Up to 6223 conditions per place. [2024-06-28 01:22:46,420 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 139 selfloop transitions, 19 changer transitions 0/179 dead transitions. [2024-06-28 01:22:46,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 179 transitions, 1384 flow [2024-06-28 01:22:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:22:46,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-28 01:22:46,422 INFO L175 Difference]: Start difference. First operand has 118 places, 130 transitions, 946 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:22:46,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 179 transitions, 1384 flow [2024-06-28 01:22:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 179 transitions, 1296 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:46,478 INFO L231 Difference]: Finished difference. Result has 121 places, 130 transitions, 903 flow [2024-06-28 01:22:46,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=903, PETRI_PLACES=121, PETRI_TRANSITIONS=130} [2024-06-28 01:22:46,478 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-28 01:22:46,479 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 130 transitions, 903 flow [2024-06-28 01:22:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:46,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:46,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:46,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:22:46,479 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:46,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash 284363786, now seen corresponding path program 1 times [2024-06-28 01:22:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514231677] [2024-06-28 01:22:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514231677] [2024-06-28 01:22:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514231677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743824577] [2024-06-28 01:22:47,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:47,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:47,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:47,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:47,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 130 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:47,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:47,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:47,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:48,572 INFO L124 PetriNetUnfolderBase]: 4733/7677 cut-off events. [2024-06-28 01:22:48,573 INFO L125 PetriNetUnfolderBase]: For 128121/128121 co-relation queries the response was YES. [2024-06-28 01:22:48,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34805 conditions, 7677 events. 4733/7677 cut-off events. For 128121/128121 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 48660 event pairs, 1499 based on Foata normal form. 4/7435 useless extension candidates. Maximal degree in co-relation 34755. Up to 6649 conditions per place. [2024-06-28 01:22:48,621 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 157 selfloop transitions, 23 changer transitions 0/190 dead transitions. [2024-06-28 01:22:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 1453 flow [2024-06-28 01:22:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:22:48,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-06-28 01:22:48,622 INFO L175 Difference]: Start difference. First operand has 121 places, 130 transitions, 903 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:22:48,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 190 transitions, 1453 flow [2024-06-28 01:22:48,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1410 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:48,688 INFO L231 Difference]: Finished difference. Result has 123 places, 133 transitions, 968 flow [2024-06-28 01:22:48,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=123, PETRI_TRANSITIONS=133} [2024-06-28 01:22:48,689 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 01:22:48,689 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 133 transitions, 968 flow [2024-06-28 01:22:48,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:48,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:48,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:22:48,690 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:48,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1362411128, now seen corresponding path program 3 times [2024-06-28 01:22:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058640428] [2024-06-28 01:22:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:49,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:49,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058640428] [2024-06-28 01:22:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058640428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:49,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:49,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886204236] [2024-06-28 01:22:49,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:49,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:49,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:49,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:22:49,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 133 transitions, 968 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:49,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:49,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:22:49,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:50,874 INFO L124 PetriNetUnfolderBase]: 4526/7349 cut-off events. [2024-06-28 01:22:50,875 INFO L125 PetriNetUnfolderBase]: For 138070/138087 co-relation queries the response was YES. [2024-06-28 01:22:50,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34746 conditions, 7349 events. 4526/7349 cut-off events. For 138070/138087 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 46526 event pairs, 1295 based on Foata normal form. 8/7143 useless extension candidates. Maximal degree in co-relation 34695. Up to 6249 conditions per place. [2024-06-28 01:22:50,929 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 131 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2024-06-28 01:22:50,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1452 flow [2024-06-28 01:22:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:22:50,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 01:22:50,930 INFO L175 Difference]: Start difference. First operand has 123 places, 133 transitions, 968 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:22:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1452 flow [2024-06-28 01:22:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 182 transitions, 1368 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:51,004 INFO L231 Difference]: Finished difference. Result has 124 places, 135 transitions, 999 flow [2024-06-28 01:22:51,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=124, PETRI_TRANSITIONS=135} [2024-06-28 01:22:51,004 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-28 01:22:51,005 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 135 transitions, 999 flow [2024-06-28 01:22:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:51,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:22:51,005 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:51,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash 289005416, now seen corresponding path program 2 times [2024-06-28 01:22:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956052252] [2024-06-28 01:22:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:51,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956052252] [2024-06-28 01:22:51,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956052252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:51,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589472929] [2024-06-28 01:22:51,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:51,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:51,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:51,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 135 transitions, 999 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:51,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:51,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:53,272 INFO L124 PetriNetUnfolderBase]: 4928/7894 cut-off events. [2024-06-28 01:22:53,272 INFO L125 PetriNetUnfolderBase]: For 158153/158156 co-relation queries the response was YES. [2024-06-28 01:22:53,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38385 conditions, 7894 events. 4928/7894 cut-off events. For 158153/158156 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49475 event pairs, 1276 based on Foata normal form. 4/7675 useless extension candidates. Maximal degree in co-relation 38333. Up to 6272 conditions per place. [2024-06-28 01:22:53,330 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 132 selfloop transitions, 70 changer transitions 0/212 dead transitions. [2024-06-28 01:22:53,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 212 transitions, 2133 flow [2024-06-28 01:22:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:22:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:22:53,331 INFO L175 Difference]: Start difference. First operand has 124 places, 135 transitions, 999 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:22:53,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 212 transitions, 2133 flow [2024-06-28 01:22:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 2036 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:53,414 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1280 flow [2024-06-28 01:22:53,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1280, PETRI_PLACES=127, PETRI_TRANSITIONS=147} [2024-06-28 01:22:53,415 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2024-06-28 01:22:53,415 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1280 flow [2024-06-28 01:22:53,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:53,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:53,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:22:53,416 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:53,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 544092588, now seen corresponding path program 3 times [2024-06-28 01:22:53,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:53,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125124878] [2024-06-28 01:22:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125124878] [2024-06-28 01:22:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125124878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:54,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432728428] [2024-06-28 01:22:54,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:54,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:54,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:54,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:54,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:54,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 147 transitions, 1280 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:54,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:54,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:54,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:55,661 INFO L124 PetriNetUnfolderBase]: 4918/7880 cut-off events. [2024-06-28 01:22:55,662 INFO L125 PetriNetUnfolderBase]: For 167856/167859 co-relation queries the response was YES. [2024-06-28 01:22:55,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39310 conditions, 7880 events. 4918/7880 cut-off events. For 167856/167859 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49378 event pairs, 1276 based on Foata normal form. 4/7661 useless extension candidates. Maximal degree in co-relation 39257. Up to 6264 conditions per place. [2024-06-28 01:22:55,726 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 72 changer transitions 0/209 dead transitions. [2024-06-28 01:22:55,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 209 transitions, 2070 flow [2024-06-28 01:22:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:22:55,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546485260770975 [2024-06-28 01:22:55,728 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1280 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:22:55,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 209 transitions, 2070 flow [2024-06-28 01:22:55,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 209 transitions, 1942 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:55,842 INFO L231 Difference]: Finished difference. Result has 133 places, 147 transitions, 1304 flow [2024-06-28 01:22:55,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1304, PETRI_PLACES=133, PETRI_TRANSITIONS=147} [2024-06-28 01:22:55,843 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-28 01:22:55,843 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 147 transitions, 1304 flow [2024-06-28 01:22:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:55,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:22:55,843 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1362406168, now seen corresponding path program 4 times [2024-06-28 01:22:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392792077] [2024-06-28 01:22:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392792077] [2024-06-28 01:22:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392792077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:56,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004585455] [2024-06-28 01:22:56,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:56,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:22:56,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 147 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:56,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:22:56,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,077 INFO L124 PetriNetUnfolderBase]: 4908/7866 cut-off events. [2024-06-28 01:22:58,077 INFO L125 PetriNetUnfolderBase]: For 170471/170474 co-relation queries the response was YES. [2024-06-28 01:22:58,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39346 conditions, 7866 events. 4908/7866 cut-off events. For 170471/170474 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49270 event pairs, 1274 based on Foata normal form. 4/7647 useless extension candidates. Maximal degree in co-relation 39291. Up to 6256 conditions per place. [2024-06-28 01:22:58,144 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 129 selfloop transitions, 69 changer transitions 0/208 dead transitions. [2024-06-28 01:22:58,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 208 transitions, 1974 flow [2024-06-28 01:22:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:22:58,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-06-28 01:22:58,145 INFO L175 Difference]: Start difference. First operand has 133 places, 147 transitions, 1304 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:22:58,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 208 transitions, 1974 flow [2024-06-28 01:22:58,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 208 transitions, 1806 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:58,266 INFO L231 Difference]: Finished difference. Result has 135 places, 147 transitions, 1282 flow [2024-06-28 01:22:58,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1282, PETRI_PLACES=135, PETRI_TRANSITIONS=147} [2024-06-28 01:22:58,266 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 01:22:58,266 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 147 transitions, 1282 flow [2024-06-28 01:22:58,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:58,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:22:58,267 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:22:58,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1123848480, now seen corresponding path program 1 times [2024-06-28 01:22:58,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:58,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993784124] [2024-06-28 01:22:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993784124] [2024-06-28 01:22:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993784124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:58,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:22:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204700947] [2024-06-28 01:22:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:58,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:22:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:22:58,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:22:58,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:22:58,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 147 transitions, 1282 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:58,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:58,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:22:58,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:59,856 INFO L124 PetriNetUnfolderBase]: 4291/7056 cut-off events. [2024-06-28 01:22:59,856 INFO L125 PetriNetUnfolderBase]: For 174157/174209 co-relation queries the response was YES. [2024-06-28 01:22:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36004 conditions, 7056 events. 4291/7056 cut-off events. For 174157/174209 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 46667 event pairs, 1587 based on Foata normal form. 10/6901 useless extension candidates. Maximal degree in co-relation 35948. Up to 6080 conditions per place. [2024-06-28 01:22:59,916 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 132 selfloop transitions, 15 changer transitions 0/179 dead transitions. [2024-06-28 01:22:59,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 179 transitions, 1724 flow [2024-06-28 01:22:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:22:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:22:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:22:59,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-28 01:22:59,918 INFO L175 Difference]: Start difference. First operand has 135 places, 147 transitions, 1282 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:22:59,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 179 transitions, 1724 flow [2024-06-28 01:23:00,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 179 transitions, 1536 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:00,035 INFO L231 Difference]: Finished difference. Result has 133 places, 156 transitions, 1248 flow [2024-06-28 01:23:00,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1248, PETRI_PLACES=133, PETRI_TRANSITIONS=156} [2024-06-28 01:23:00,035 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-28 01:23:00,035 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 156 transitions, 1248 flow [2024-06-28 01:23:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:00,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:00,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:00,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:23:00,036 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:00,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -338402214, now seen corresponding path program 4 times [2024-06-28 01:23:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786984331] [2024-06-28 01:23:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:00,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786984331] [2024-06-28 01:23:00,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786984331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:00,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:00,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:23:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437197687] [2024-06-28 01:23:00,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:00,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:23:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:00,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:23:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:23:00,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:00,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 156 transitions, 1248 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:00,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:02,090 INFO L124 PetriNetUnfolderBase]: 4681/7591 cut-off events. [2024-06-28 01:23:02,090 INFO L125 PetriNetUnfolderBase]: For 182930/182955 co-relation queries the response was YES. [2024-06-28 01:23:02,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38681 conditions, 7591 events. 4681/7591 cut-off events. For 182930/182955 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48949 event pairs, 1469 based on Foata normal form. 5/7392 useless extension candidates. Maximal degree in co-relation 38623. Up to 6466 conditions per place. [2024-06-28 01:23:02,151 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 145 selfloop transitions, 35 changer transitions 0/201 dead transitions. [2024-06-28 01:23:02,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1772 flow [2024-06-28 01:23:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:23:02,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-28 01:23:02,152 INFO L175 Difference]: Start difference. First operand has 133 places, 156 transitions, 1248 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:23:02,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1772 flow [2024-06-28 01:23:02,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 201 transitions, 1726 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:02,247 INFO L231 Difference]: Finished difference. Result has 138 places, 158 transitions, 1333 flow [2024-06-28 01:23:02,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1333, PETRI_PLACES=138, PETRI_TRANSITIONS=158} [2024-06-28 01:23:02,247 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2024-06-28 01:23:02,247 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 158 transitions, 1333 flow [2024-06-28 01:23:02,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:02,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:02,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:23:02,248 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:02,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash -338397254, now seen corresponding path program 5 times [2024-06-28 01:23:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:02,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993839557] [2024-06-28 01:23:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993839557] [2024-06-28 01:23:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993839557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492932019] [2024-06-28 01:23:03,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:03,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:03,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 158 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:03,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:03,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:03,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:04,476 INFO L124 PetriNetUnfolderBase]: 4980/7903 cut-off events. [2024-06-28 01:23:04,476 INFO L125 PetriNetUnfolderBase]: For 197444/197444 co-relation queries the response was YES. [2024-06-28 01:23:04,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41144 conditions, 7903 events. 4980/7903 cut-off events. For 197444/197444 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 49699 event pairs, 1420 based on Foata normal form. 4/7720 useless extension candidates. Maximal degree in co-relation 41085. Up to 6329 conditions per place. [2024-06-28 01:23:04,544 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 80 changer transitions 0/217 dead transitions. [2024-06-28 01:23:04,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 217 transitions, 2089 flow [2024-06-28 01:23:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:23:04,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-28 01:23:04,546 INFO L175 Difference]: Start difference. First operand has 138 places, 158 transitions, 1333 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:23:04,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 217 transitions, 2089 flow [2024-06-28 01:23:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 217 transitions, 1976 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:04,666 INFO L231 Difference]: Finished difference. Result has 141 places, 161 transitions, 1450 flow [2024-06-28 01:23:04,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=141, PETRI_TRANSITIONS=161} [2024-06-28 01:23:04,666 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-28 01:23:04,666 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 161 transitions, 1450 flow [2024-06-28 01:23:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:04,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:04,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:23:04,667 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:04,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -338217764, now seen corresponding path program 6 times [2024-06-28 01:23:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236051181] [2024-06-28 01:23:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:05,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:05,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236051181] [2024-06-28 01:23:05,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236051181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:05,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:05,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:05,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54571609] [2024-06-28 01:23:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:05,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:05,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:05,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 161 transitions, 1450 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:06,974 INFO L124 PetriNetUnfolderBase]: 5082/8063 cut-off events. [2024-06-28 01:23:06,974 INFO L125 PetriNetUnfolderBase]: For 212784/212784 co-relation queries the response was YES. [2024-06-28 01:23:07,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42962 conditions, 8063 events. 5082/8063 cut-off events. For 212784/212784 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 50781 event pairs, 1424 based on Foata normal form. 4/7880 useless extension candidates. Maximal degree in co-relation 42902. Up to 6415 conditions per place. [2024-06-28 01:23:07,044 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 131 selfloop transitions, 84 changer transitions 0/225 dead transitions. [2024-06-28 01:23:07,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 225 transitions, 2442 flow [2024-06-28 01:23:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:23:07,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-28 01:23:07,046 INFO L175 Difference]: Start difference. First operand has 141 places, 161 transitions, 1450 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:23:07,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 225 transitions, 2442 flow [2024-06-28 01:23:07,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 225 transitions, 2172 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:07,187 INFO L231 Difference]: Finished difference. Result has 143 places, 167 transitions, 1492 flow [2024-06-28 01:23:07,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1492, PETRI_PLACES=143, PETRI_TRANSITIONS=167} [2024-06-28 01:23:07,187 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-28 01:23:07,188 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 167 transitions, 1492 flow [2024-06-28 01:23:07,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:07,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:07,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:07,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:23:07,188 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:07,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:07,188 INFO L85 PathProgramCache]: Analyzing trace with hash -110323124, now seen corresponding path program 7 times [2024-06-28 01:23:07,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:07,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222080433] [2024-06-28 01:23:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222080433] [2024-06-28 01:23:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222080433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069146849] [2024-06-28 01:23:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:08,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:08,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 167 transitions, 1492 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:08,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:08,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,453 INFO L124 PetriNetUnfolderBase]: 5128/8169 cut-off events. [2024-06-28 01:23:09,453 INFO L125 PetriNetUnfolderBase]: For 218241/218241 co-relation queries the response was YES. [2024-06-28 01:23:09,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43263 conditions, 8169 events. 5128/8169 cut-off events. For 218241/218241 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 51918 event pairs, 1423 based on Foata normal form. 4/7973 useless extension candidates. Maximal degree in co-relation 43202. Up to 6454 conditions per place. [2024-06-28 01:23:09,523 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 128 selfloop transitions, 90 changer transitions 0/228 dead transitions. [2024-06-28 01:23:09,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 228 transitions, 2420 flow [2024-06-28 01:23:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:23:09,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:23:09,524 INFO L175 Difference]: Start difference. First operand has 143 places, 167 transitions, 1492 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:23:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 228 transitions, 2420 flow [2024-06-28 01:23:09,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 228 transitions, 2235 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:09,658 INFO L231 Difference]: Finished difference. Result has 147 places, 170 transitions, 1553 flow [2024-06-28 01:23:09,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=147, PETRI_TRANSITIONS=170} [2024-06-28 01:23:09,659 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-06-28 01:23:09,659 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 170 transitions, 1553 flow [2024-06-28 01:23:09,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:09,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:23:09,659 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:09,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -338224274, now seen corresponding path program 8 times [2024-06-28 01:23:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653898688] [2024-06-28 01:23:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,533 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 01:23:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653898688] [2024-06-28 01:23:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653898688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470645022] [2024-06-28 01:23:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:10,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:10,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:10,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:10,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 170 transitions, 1553 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:10,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:12,022 INFO L124 PetriNetUnfolderBase]: 5118/8131 cut-off events. [2024-06-28 01:23:12,023 INFO L125 PetriNetUnfolderBase]: For 224020/224020 co-relation queries the response was YES. [2024-06-28 01:23:12,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43071 conditions, 8131 events. 5118/8131 cut-off events. For 224020/224020 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 51353 event pairs, 1431 based on Foata normal form. 4/7948 useless extension candidates. Maximal degree in co-relation 43009. Up to 6446 conditions per place. [2024-06-28 01:23:12,094 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 131 selfloop transitions, 86 changer transitions 0/227 dead transitions. [2024-06-28 01:23:12,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 227 transitions, 2281 flow [2024-06-28 01:23:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:23:12,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-28 01:23:12,096 INFO L175 Difference]: Start difference. First operand has 147 places, 170 transitions, 1553 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:23:12,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 227 transitions, 2281 flow [2024-06-28 01:23:12,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 227 transitions, 2017 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:12,265 INFO L231 Difference]: Finished difference. Result has 149 places, 170 transitions, 1469 flow [2024-06-28 01:23:12,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=149, PETRI_TRANSITIONS=170} [2024-06-28 01:23:12,265 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-28 01:23:12,265 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 170 transitions, 1469 flow [2024-06-28 01:23:12,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:12,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:12,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:23:12,266 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:12,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash -110316614, now seen corresponding path program 9 times [2024-06-28 01:23:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85379480] [2024-06-28 01:23:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85379480] [2024-06-28 01:23:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85379480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:13,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20140671] [2024-06-28 01:23:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:13,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:13,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 170 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:13,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:13,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:13,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:14,772 INFO L124 PetriNetUnfolderBase]: 5164/8167 cut-off events. [2024-06-28 01:23:14,772 INFO L125 PetriNetUnfolderBase]: For 230642/230642 co-relation queries the response was YES. [2024-06-28 01:23:14,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43237 conditions, 8167 events. 5164/8167 cut-off events. For 230642/230642 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51371 event pairs, 1399 based on Foata normal form. 4/7999 useless extension candidates. Maximal degree in co-relation 43174. Up to 6485 conditions per place. [2024-06-28 01:23:14,832 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 92 changer transitions 0/229 dead transitions. [2024-06-28 01:23:14,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 229 transitions, 2260 flow [2024-06-28 01:23:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:23:14,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-28 01:23:14,833 INFO L175 Difference]: Start difference. First operand has 149 places, 170 transitions, 1469 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:23:14,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 229 transitions, 2260 flow [2024-06-28 01:23:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 229 transitions, 2046 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:14,963 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1504 flow [2024-06-28 01:23:14,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1504, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-06-28 01:23:14,963 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-28 01:23:14,963 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1504 flow [2024-06-28 01:23:14,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:14,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:14,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:23:14,964 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:14,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:14,964 INFO L85 PathProgramCache]: Analyzing trace with hash -102042404, now seen corresponding path program 10 times [2024-06-28 01:23:14,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:14,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031019796] [2024-06-28 01:23:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:15,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:15,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031019796] [2024-06-28 01:23:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031019796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:15,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160994248] [2024-06-28 01:23:15,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:15,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:15,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:15,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:15,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:15,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:15,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:15,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:15,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:17,353 INFO L124 PetriNetUnfolderBase]: 5154/8180 cut-off events. [2024-06-28 01:23:17,353 INFO L125 PetriNetUnfolderBase]: For 236325/236325 co-relation queries the response was YES. [2024-06-28 01:23:17,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43231 conditions, 8180 events. 5154/8180 cut-off events. For 236325/236325 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 51657 event pairs, 1412 based on Foata normal form. 4/8002 useless extension candidates. Maximal degree in co-relation 43167. Up to 6477 conditions per place. [2024-06-28 01:23:17,420 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 117 selfloop transitions, 99 changer transitions 0/226 dead transitions. [2024-06-28 01:23:17,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 226 transitions, 2076 flow [2024-06-28 01:23:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:23:17,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:23:17,422 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1504 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:23:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 226 transitions, 2076 flow [2024-06-28 01:23:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 226 transitions, 1840 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:17,552 INFO L231 Difference]: Finished difference. Result has 152 places, 173 transitions, 1474 flow [2024-06-28 01:23:17,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1474, PETRI_PLACES=152, PETRI_TRANSITIONS=173} [2024-06-28 01:23:17,553 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 97 predicate places. [2024-06-28 01:23:17,553 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 173 transitions, 1474 flow [2024-06-28 01:23:17,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:17,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:17,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:23:17,554 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:17,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -296487286, now seen corresponding path program 2 times [2024-06-28 01:23:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16437740] [2024-06-28 01:23:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:18,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16437740] [2024-06-28 01:23:18,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16437740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:18,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:18,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676356040] [2024-06-28 01:23:18,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:18,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:18,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:18,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:23:18,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 173 transitions, 1474 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:18,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:18,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:23:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:19,268 INFO L124 PetriNetUnfolderBase]: 4444/7301 cut-off events. [2024-06-28 01:23:19,268 INFO L125 PetriNetUnfolderBase]: For 236909/236964 co-relation queries the response was YES. [2024-06-28 01:23:19,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39280 conditions, 7301 events. 4444/7301 cut-off events. For 236909/236964 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48565 event pairs, 1594 based on Foata normal form. 3/7098 useless extension candidates. Maximal degree in co-relation 39215. Up to 6266 conditions per place. [2024-06-28 01:23:19,330 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 143 selfloop transitions, 20 changer transitions 0/195 dead transitions. [2024-06-28 01:23:19,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 195 transitions, 1888 flow [2024-06-28 01:23:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:23:19,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:23:19,333 INFO L175 Difference]: Start difference. First operand has 152 places, 173 transitions, 1474 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:23:19,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 195 transitions, 1888 flow [2024-06-28 01:23:19,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 195 transitions, 1666 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:19,487 INFO L231 Difference]: Finished difference. Result has 149 places, 176 transitions, 1342 flow [2024-06-28 01:23:19,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1342, PETRI_PLACES=149, PETRI_TRANSITIONS=176} [2024-06-28 01:23:19,488 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-28 01:23:19,488 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 176 transitions, 1342 flow [2024-06-28 01:23:19,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:19,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:19,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:19,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:23:19,489 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:19,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1129568352, now seen corresponding path program 1 times [2024-06-28 01:23:19,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116884830] [2024-06-28 01:23:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116884830] [2024-06-28 01:23:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116884830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:20,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:23:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368974280] [2024-06-28 01:23:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:23:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:23:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:23:20,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:23:20,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 176 transitions, 1342 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:20,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:20,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:23:20,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:21,242 INFO L124 PetriNetUnfolderBase]: 4317/7260 cut-off events. [2024-06-28 01:23:21,242 INFO L125 PetriNetUnfolderBase]: For 215499/215526 co-relation queries the response was YES. [2024-06-28 01:23:21,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37413 conditions, 7260 events. 4317/7260 cut-off events. For 215499/215526 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 48950 event pairs, 2043 based on Foata normal form. 4/7090 useless extension candidates. Maximal degree in co-relation 37347. Up to 6115 conditions per place. [2024-06-28 01:23:21,300 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 167 selfloop transitions, 15 changer transitions 0/204 dead transitions. [2024-06-28 01:23:21,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 204 transitions, 1834 flow [2024-06-28 01:23:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:23:21,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:23:21,302 INFO L175 Difference]: Start difference. First operand has 149 places, 176 transitions, 1342 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:23:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 204 transitions, 1834 flow [2024-06-28 01:23:21,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 1766 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:21,472 INFO L231 Difference]: Finished difference. Result has 154 places, 185 transitions, 1414 flow [2024-06-28 01:23:21,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1414, PETRI_PLACES=154, PETRI_TRANSITIONS=185} [2024-06-28 01:23:21,472 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-28 01:23:21,472 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 185 transitions, 1414 flow [2024-06-28 01:23:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:21,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:21,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:23:21,473 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:21,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -101734574, now seen corresponding path program 1 times [2024-06-28 01:23:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:21,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956645048] [2024-06-28 01:23:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:22,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956645048] [2024-06-28 01:23:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956645048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:22,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:22,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:22,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461424346] [2024-06-28 01:23:22,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:22,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:22,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:22,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:22,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:23:22,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 185 transitions, 1414 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:22,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:22,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:23:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:23,823 INFO L124 PetriNetUnfolderBase]: 4549/7524 cut-off events. [2024-06-28 01:23:23,823 INFO L125 PetriNetUnfolderBase]: For 223392/223392 co-relation queries the response was YES. [2024-06-28 01:23:23,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39443 conditions, 7524 events. 4549/7524 cut-off events. For 223392/223392 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 49765 event pairs, 2049 based on Foata normal form. 4/7376 useless extension candidates. Maximal degree in co-relation 39374. Up to 6401 conditions per place. [2024-06-28 01:23:23,889 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 202 selfloop transitions, 26 changer transitions 0/239 dead transitions. [2024-06-28 01:23:23,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 239 transitions, 2074 flow [2024-06-28 01:23:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:23:23,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:23:23,891 INFO L175 Difference]: Start difference. First operand has 154 places, 185 transitions, 1414 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:23:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 239 transitions, 2074 flow [2024-06-28 01:23:24,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 239 transitions, 2019 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:24,025 INFO L231 Difference]: Finished difference. Result has 161 places, 190 transitions, 1496 flow [2024-06-28 01:23:24,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1496, PETRI_PLACES=161, PETRI_TRANSITIONS=190} [2024-06-28 01:23:24,025 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-28 01:23:24,025 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 190 transitions, 1496 flow [2024-06-28 01:23:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:24,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:24,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:24,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:23:24,026 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:24,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2132642314, now seen corresponding path program 2 times [2024-06-28 01:23:24,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769398113] [2024-06-28 01:23:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:24,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:24,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769398113] [2024-06-28 01:23:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769398113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:24,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:24,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:23:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592633502] [2024-06-28 01:23:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:24,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:23:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:23:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:23:24,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:23:24,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 190 transitions, 1496 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:24,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:23:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:25,886 INFO L124 PetriNetUnfolderBase]: 4314/7394 cut-off events. [2024-06-28 01:23:25,887 INFO L125 PetriNetUnfolderBase]: For 232108/232143 co-relation queries the response was YES. [2024-06-28 01:23:25,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39161 conditions, 7394 events. 4314/7394 cut-off events. For 232108/232143 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 50933 event pairs, 1990 based on Foata normal form. 10/7194 useless extension candidates. Maximal degree in co-relation 39090. Up to 6086 conditions per place. [2024-06-28 01:23:25,959 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 169 selfloop transitions, 20 changer transitions 0/211 dead transitions. [2024-06-28 01:23:25,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 211 transitions, 1972 flow [2024-06-28 01:23:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:23:25,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:23:25,960 INFO L175 Difference]: Start difference. First operand has 161 places, 190 transitions, 1496 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:23:25,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 211 transitions, 1972 flow [2024-06-28 01:23:26,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 211 transitions, 1875 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:26,130 INFO L231 Difference]: Finished difference. Result has 162 places, 193 transitions, 1497 flow [2024-06-28 01:23:26,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1497, PETRI_PLACES=162, PETRI_TRANSITIONS=193} [2024-06-28 01:23:26,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-06-28 01:23:26,131 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 193 transitions, 1497 flow [2024-06-28 01:23:26,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:26,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:26,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:26,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:23:26,131 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:26,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash 349793714, now seen corresponding path program 1 times [2024-06-28 01:23:26,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:26,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669518819] [2024-06-28 01:23:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:26,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:26,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669518819] [2024-06-28 01:23:26,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669518819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:26,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:26,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:26,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450960176] [2024-06-28 01:23:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:26,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:26,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:26,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:26,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 193 transitions, 1497 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:26,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:26,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:26,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:28,325 INFO L124 PetriNetUnfolderBase]: 5424/8710 cut-off events. [2024-06-28 01:23:28,325 INFO L125 PetriNetUnfolderBase]: For 297534/297538 co-relation queries the response was YES. [2024-06-28 01:23:28,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48218 conditions, 8710 events. 5424/8710 cut-off events. For 297534/297538 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 56676 event pairs, 1427 based on Foata normal form. 8/8532 useless extension candidates. Maximal degree in co-relation 48146. Up to 7266 conditions per place. [2024-06-28 01:23:28,405 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 232 selfloop transitions, 43 changer transitions 0/285 dead transitions. [2024-06-28 01:23:28,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 285 transitions, 2712 flow [2024-06-28 01:23:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-28 01:23:28,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250463821892394 [2024-06-28 01:23:28,406 INFO L175 Difference]: Start difference. First operand has 162 places, 193 transitions, 1497 flow. Second operand 11 states and 283 transitions. [2024-06-28 01:23:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 285 transitions, 2712 flow [2024-06-28 01:23:28,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 285 transitions, 2636 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:28,592 INFO L231 Difference]: Finished difference. Result has 171 places, 208 transitions, 1741 flow [2024-06-28 01:23:28,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1741, PETRI_PLACES=171, PETRI_TRANSITIONS=208} [2024-06-28 01:23:28,592 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-28 01:23:28,592 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 208 transitions, 1741 flow [2024-06-28 01:23:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:28,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:28,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:28,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:23:28,593 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:28,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1255992408, now seen corresponding path program 2 times [2024-06-28 01:23:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887427959] [2024-06-28 01:23:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887427959] [2024-06-28 01:23:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887427959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651881716] [2024-06-28 01:23:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:29,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:29,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 208 transitions, 1741 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:29,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:29,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:29,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:30,973 INFO L124 PetriNetUnfolderBase]: 5958/9524 cut-off events. [2024-06-28 01:23:30,973 INFO L125 PetriNetUnfolderBase]: For 332925/332929 co-relation queries the response was YES. [2024-06-28 01:23:31,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54860 conditions, 9524 events. 5958/9524 cut-off events. For 332925/332929 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 62371 event pairs, 1967 based on Foata normal form. 8/9344 useless extension candidates. Maximal degree in co-relation 54784. Up to 8000 conditions per place. [2024-06-28 01:23:31,072 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 255 selfloop transitions, 65 changer transitions 0/330 dead transitions. [2024-06-28 01:23:31,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 330 transitions, 3453 flow [2024-06-28 01:23:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-28 01:23:31,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213358070500927 [2024-06-28 01:23:31,074 INFO L175 Difference]: Start difference. First operand has 171 places, 208 transitions, 1741 flow. Second operand 11 states and 281 transitions. [2024-06-28 01:23:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 330 transitions, 3453 flow [2024-06-28 01:23:31,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 330 transitions, 3204 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:31,561 INFO L231 Difference]: Finished difference. Result has 182 places, 253 transitions, 2379 flow [2024-06-28 01:23:31,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2379, PETRI_PLACES=182, PETRI_TRANSITIONS=253} [2024-06-28 01:23:31,561 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 127 predicate places. [2024-06-28 01:23:31,562 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 253 transitions, 2379 flow [2024-06-28 01:23:31,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:31,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:31,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:23:31,562 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:31,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 356154742, now seen corresponding path program 3 times [2024-06-28 01:23:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697758636] [2024-06-28 01:23:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:32,355 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 01:23:32,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697758636] [2024-06-28 01:23:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697758636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:32,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:32,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54681828] [2024-06-28 01:23:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:32,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:32,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 253 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:32,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:32,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:34,209 INFO L124 PetriNetUnfolderBase]: 6763/11216 cut-off events. [2024-06-28 01:23:34,209 INFO L125 PetriNetUnfolderBase]: For 362939/362943 co-relation queries the response was YES. [2024-06-28 01:23:34,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63500 conditions, 11216 events. 6763/11216 cut-off events. For 362939/362943 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 78222 event pairs, 2290 based on Foata normal form. 10/10925 useless extension candidates. Maximal degree in co-relation 63417. Up to 8805 conditions per place. [2024-06-28 01:23:34,317 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 280 selfloop transitions, 112 changer transitions 0/402 dead transitions. [2024-06-28 01:23:34,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 402 transitions, 4520 flow [2024-06-28 01:23:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2024-06-28 01:23:34,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-28 01:23:34,319 INFO L175 Difference]: Start difference. First operand has 182 places, 253 transitions, 2379 flow. Second operand 12 states and 306 transitions. [2024-06-28 01:23:34,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 402 transitions, 4520 flow [2024-06-28 01:23:34,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 402 transitions, 4371 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:34,896 INFO L231 Difference]: Finished difference. Result has 195 places, 318 transitions, 3515 flow [2024-06-28 01:23:34,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3515, PETRI_PLACES=195, PETRI_TRANSITIONS=318} [2024-06-28 01:23:34,896 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-28 01:23:34,896 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 318 transitions, 3515 flow [2024-06-28 01:23:34,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:34,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:34,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:34,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:23:34,897 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash -416979388, now seen corresponding path program 4 times [2024-06-28 01:23:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091347096] [2024-06-28 01:23:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:35,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091347096] [2024-06-28 01:23:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091347096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:35,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:35,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702235154] [2024-06-28 01:23:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:35,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:35,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:35,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:35,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:35,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 318 transitions, 3515 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:35,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:35,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:35,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:37,917 INFO L124 PetriNetUnfolderBase]: 6956/11560 cut-off events. [2024-06-28 01:23:37,917 INFO L125 PetriNetUnfolderBase]: For 387828/387830 co-relation queries the response was YES. [2024-06-28 01:23:37,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68455 conditions, 11560 events. 6956/11560 cut-off events. For 387828/387830 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 81208 event pairs, 2552 based on Foata normal form. 10/11254 useless extension candidates. Maximal degree in co-relation 68367. Up to 9624 conditions per place. [2024-06-28 01:23:38,047 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 312 selfloop transitions, 89 changer transitions 0/411 dead transitions. [2024-06-28 01:23:38,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 411 transitions, 4984 flow [2024-06-28 01:23:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-06-28 01:23:38,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085034013605442 [2024-06-28 01:23:38,048 INFO L175 Difference]: Start difference. First operand has 195 places, 318 transitions, 3515 flow. Second operand 12 states and 299 transitions. [2024-06-28 01:23:38,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 411 transitions, 4984 flow [2024-06-28 01:23:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 411 transitions, 4863 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:38,627 INFO L231 Difference]: Finished difference. Result has 204 places, 337 transitions, 3962 flow [2024-06-28 01:23:38,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3962, PETRI_PLACES=204, PETRI_TRANSITIONS=337} [2024-06-28 01:23:38,628 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-06-28 01:23:38,628 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 337 transitions, 3962 flow [2024-06-28 01:23:38,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:38,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:38,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:23:38,628 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 294916082, now seen corresponding path program 5 times [2024-06-28 01:23:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986672411] [2024-06-28 01:23:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986672411] [2024-06-28 01:23:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986672411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:39,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430920553] [2024-06-28 01:23:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:39,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:39,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 337 transitions, 3962 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:39,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:41,660 INFO L124 PetriNetUnfolderBase]: 7144/11854 cut-off events. [2024-06-28 01:23:41,660 INFO L125 PetriNetUnfolderBase]: For 403348/403350 co-relation queries the response was YES. [2024-06-28 01:23:41,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71021 conditions, 11854 events. 7144/11854 cut-off events. For 403348/403350 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 83478 event pairs, 2528 based on Foata normal form. 10/11546 useless extension candidates. Maximal degree in co-relation 70930. Up to 9680 conditions per place. [2024-06-28 01:23:41,777 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 315 selfloop transitions, 101 changer transitions 0/426 dead transitions. [2024-06-28 01:23:41,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 426 transitions, 5397 flow [2024-06-28 01:23:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-28 01:23:41,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:23:41,779 INFO L175 Difference]: Start difference. First operand has 204 places, 337 transitions, 3962 flow. Second operand 12 states and 301 transitions. [2024-06-28 01:23:41,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 426 transitions, 5397 flow [2024-06-28 01:23:42,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 426 transitions, 5111 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:42,280 INFO L231 Difference]: Finished difference. Result has 209 places, 350 transitions, 4213 flow [2024-06-28 01:23:42,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4213, PETRI_PLACES=209, PETRI_TRANSITIONS=350} [2024-06-28 01:23:42,280 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 154 predicate places. [2024-06-28 01:23:42,280 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 350 transitions, 4213 flow [2024-06-28 01:23:42,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:42,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:42,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:42,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:23:42,281 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:42,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash -487430318, now seen corresponding path program 6 times [2024-06-28 01:23:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988011691] [2024-06-28 01:23:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988011691] [2024-06-28 01:23:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988011691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100026409] [2024-06-28 01:23:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:43,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:43,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 350 transitions, 4213 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:43,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:43,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:43,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:45,285 INFO L124 PetriNetUnfolderBase]: 7261/11749 cut-off events. [2024-06-28 01:23:45,285 INFO L125 PetriNetUnfolderBase]: For 413469/413471 co-relation queries the response was YES. [2024-06-28 01:23:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72755 conditions, 11749 events. 7261/11749 cut-off events. For 413469/413471 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 80803 event pairs, 2333 based on Foata normal form. 10/11499 useless extension candidates. Maximal degree in co-relation 72662. Up to 9803 conditions per place. [2024-06-28 01:23:45,414 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 321 selfloop transitions, 95 changer transitions 0/426 dead transitions. [2024-06-28 01:23:45,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 426 transitions, 5752 flow [2024-06-28 01:23:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:23:45,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-28 01:23:45,415 INFO L175 Difference]: Start difference. First operand has 209 places, 350 transitions, 4213 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:23:45,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 426 transitions, 5752 flow [2024-06-28 01:23:46,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 426 transitions, 5436 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:46,173 INFO L231 Difference]: Finished difference. Result has 211 places, 360 transitions, 4375 flow [2024-06-28 01:23:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4375, PETRI_PLACES=211, PETRI_TRANSITIONS=360} [2024-06-28 01:23:46,174 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 156 predicate places. [2024-06-28 01:23:46,174 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 360 transitions, 4375 flow [2024-06-28 01:23:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:46,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:46,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:23:46,175 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:46,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash -487282448, now seen corresponding path program 7 times [2024-06-28 01:23:46,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:46,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673287917] [2024-06-28 01:23:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:46,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:47,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:47,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673287917] [2024-06-28 01:23:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673287917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:47,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983873440] [2024-06-28 01:23:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:47,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:47,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:47,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 360 transitions, 4375 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:47,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:47,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:49,067 INFO L124 PetriNetUnfolderBase]: 7243/11798 cut-off events. [2024-06-28 01:23:49,067 INFO L125 PetriNetUnfolderBase]: For 413016/413018 co-relation queries the response was YES. [2024-06-28 01:23:49,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72266 conditions, 11798 events. 7243/11798 cut-off events. For 413016/413018 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 81936 event pairs, 2425 based on Foata normal form. 10/11530 useless extension candidates. Maximal degree in co-relation 72171. Up to 10092 conditions per place. [2024-06-28 01:23:49,208 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 336 selfloop transitions, 77 changer transitions 0/423 dead transitions. [2024-06-28 01:23:49,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 423 transitions, 5472 flow [2024-06-28 01:23:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-28 01:23:49,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122448979591837 [2024-06-28 01:23:49,209 INFO L175 Difference]: Start difference. First operand has 211 places, 360 transitions, 4375 flow. Second operand 10 states and 251 transitions. [2024-06-28 01:23:49,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 423 transitions, 5472 flow [2024-06-28 01:23:50,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 423 transitions, 5074 flow, removed 124 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:50,221 INFO L231 Difference]: Finished difference. Result has 215 places, 362 transitions, 4187 flow [2024-06-28 01:23:50,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4187, PETRI_PLACES=215, PETRI_TRANSITIONS=362} [2024-06-28 01:23:50,222 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2024-06-28 01:23:50,223 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 362 transitions, 4187 flow [2024-06-28 01:23:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:50,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:50,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:23:50,228 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -318349392, now seen corresponding path program 8 times [2024-06-28 01:23:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059891927] [2024-06-28 01:23:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:51,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:51,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059891927] [2024-06-28 01:23:51,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059891927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:51,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:51,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286528454] [2024-06-28 01:23:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:51,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:51,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:51,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:51,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:51,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 362 transitions, 4187 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:51,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:51,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:53,431 INFO L124 PetriNetUnfolderBase]: 7623/12443 cut-off events. [2024-06-28 01:23:53,431 INFO L125 PetriNetUnfolderBase]: For 411082/411085 co-relation queries the response was YES. [2024-06-28 01:23:53,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74296 conditions, 12443 events. 7623/12443 cut-off events. For 411082/411085 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 87014 event pairs, 2350 based on Foata normal form. 6/12148 useless extension candidates. Maximal degree in co-relation 74199. Up to 10165 conditions per place. [2024-06-28 01:23:53,576 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 318 selfloop transitions, 155 changer transitions 0/483 dead transitions. [2024-06-28 01:23:53,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 483 transitions, 5900 flow [2024-06-28 01:23:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 01:23:53,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-28 01:23:53,580 INFO L175 Difference]: Start difference. First operand has 215 places, 362 transitions, 4187 flow. Second operand 10 states and 258 transitions. [2024-06-28 01:23:53,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 483 transitions, 5900 flow [2024-06-28 01:23:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 483 transitions, 5757 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:54,291 INFO L231 Difference]: Finished difference. Result has 221 places, 409 transitions, 4862 flow [2024-06-28 01:23:54,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4862, PETRI_PLACES=221, PETRI_TRANSITIONS=409} [2024-06-28 01:23:54,291 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-06-28 01:23:54,291 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 409 transitions, 4862 flow [2024-06-28 01:23:54,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:54,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:54,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:23:54,292 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:54,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2139122888, now seen corresponding path program 9 times [2024-06-28 01:23:54,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709971408] [2024-06-28 01:23:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709971408] [2024-06-28 01:23:55,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709971408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:55,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:55,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898606759] [2024-06-28 01:23:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:55,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:55,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 409 transitions, 4862 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:55,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:55,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:55,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:57,790 INFO L124 PetriNetUnfolderBase]: 7660/12508 cut-off events. [2024-06-28 01:23:57,791 INFO L125 PetriNetUnfolderBase]: For 432908/432911 co-relation queries the response was YES. [2024-06-28 01:23:57,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76976 conditions, 12508 events. 7660/12508 cut-off events. For 432908/432911 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 87619 event pairs, 2378 based on Foata normal form. 6/12213 useless extension candidates. Maximal degree in co-relation 76875. Up to 10220 conditions per place. [2024-06-28 01:23:57,954 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 321 selfloop transitions, 152 changer transitions 0/483 dead transitions. [2024-06-28 01:23:57,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 483 transitions, 6271 flow [2024-06-28 01:23:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:23:57,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-28 01:23:57,956 INFO L175 Difference]: Start difference. First operand has 221 places, 409 transitions, 4862 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:23:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 483 transitions, 6271 flow [2024-06-28 01:23:58,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 483 transitions, 6059 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:58,778 INFO L231 Difference]: Finished difference. Result has 229 places, 412 transitions, 5067 flow [2024-06-28 01:23:58,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5067, PETRI_PLACES=229, PETRI_TRANSITIONS=412} [2024-06-28 01:23:58,779 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2024-06-28 01:23:58,779 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 412 transitions, 5067 flow [2024-06-28 01:23:58,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:58,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:58,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:58,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:23:58,779 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:23:58,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:58,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1208371344, now seen corresponding path program 10 times [2024-06-28 01:23:58,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:58,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987807486] [2024-06-28 01:23:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:58,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987807486] [2024-06-28 01:23:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987807486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092929701] [2024-06-28 01:23:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:59,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:23:59,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 412 transitions, 5067 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:59,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:23:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:01,935 INFO L124 PetriNetUnfolderBase]: 7734/12617 cut-off events. [2024-06-28 01:24:01,935 INFO L125 PetriNetUnfolderBase]: For 451775/451778 co-relation queries the response was YES. [2024-06-28 01:24:02,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78184 conditions, 12617 events. 7734/12617 cut-off events. For 451775/451778 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 88378 event pairs, 2362 based on Foata normal form. 6/12321 useless extension candidates. Maximal degree in co-relation 78081. Up to 10219 conditions per place. [2024-06-28 01:24:02,109 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 321 selfloop transitions, 157 changer transitions 0/488 dead transitions. [2024-06-28 01:24:02,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 488 transitions, 6493 flow [2024-06-28 01:24:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:24:02,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:24:02,111 INFO L175 Difference]: Start difference. First operand has 229 places, 412 transitions, 5067 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:24:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 488 transitions, 6493 flow [2024-06-28 01:24:03,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 488 transitions, 6183 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:03,028 INFO L231 Difference]: Finished difference. Result has 235 places, 416 transitions, 5165 flow [2024-06-28 01:24:03,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5165, PETRI_PLACES=235, PETRI_TRANSITIONS=416} [2024-06-28 01:24:03,028 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 180 predicate places. [2024-06-28 01:24:03,028 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 416 transitions, 5165 flow [2024-06-28 01:24:03,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:03,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:03,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:03,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:24:03,029 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:03,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash -275972527, now seen corresponding path program 1 times [2024-06-28 01:24:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085829854] [2024-06-28 01:24:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:03,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085829854] [2024-06-28 01:24:03,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085829854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:03,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:03,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:24:03,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318748996] [2024-06-28 01:24:03,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:03,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:24:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:24:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:24:04,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:24:04,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 416 transitions, 5165 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:04,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:04,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:24:04,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:05,829 INFO L124 PetriNetUnfolderBase]: 6816/11497 cut-off events. [2024-06-28 01:24:05,830 INFO L125 PetriNetUnfolderBase]: For 457201/457278 co-relation queries the response was YES. [2024-06-28 01:24:05,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71445 conditions, 11497 events. 6816/11497 cut-off events. For 457201/457278 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 83809 event pairs, 2400 based on Foata normal form. 22/11156 useless extension candidates. Maximal degree in co-relation 71340. Up to 9392 conditions per place. [2024-06-28 01:24:05,984 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 333 selfloop transitions, 37 changer transitions 0/454 dead transitions. [2024-06-28 01:24:05,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 454 transitions, 6105 flow [2024-06-28 01:24:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:24:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:24:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:24:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-28 01:24:05,985 INFO L175 Difference]: Start difference. First operand has 235 places, 416 transitions, 5165 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:24:05,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 454 transitions, 6105 flow [2024-06-28 01:24:06,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 454 transitions, 5745 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:06,768 INFO L231 Difference]: Finished difference. Result has 237 places, 423 transitions, 4958 flow [2024-06-28 01:24:06,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4805, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4958, PETRI_PLACES=237, PETRI_TRANSITIONS=423} [2024-06-28 01:24:06,769 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2024-06-28 01:24:06,769 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 423 transitions, 4958 flow [2024-06-28 01:24:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:06,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:06,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:06,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:24:06,770 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:06,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 313660278, now seen corresponding path program 11 times [2024-06-28 01:24:06,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:06,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751660869] [2024-06-28 01:24:06,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:07,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751660869] [2024-06-28 01:24:07,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751660869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:07,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:07,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867360283] [2024-06-28 01:24:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:07,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:07,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:07,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:07,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 423 transitions, 4958 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:07,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:07,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:07,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:10,076 INFO L124 PetriNetUnfolderBase]: 7870/13048 cut-off events. [2024-06-28 01:24:10,077 INFO L125 PetriNetUnfolderBase]: For 485408/485410 co-relation queries the response was YES. [2024-06-28 01:24:10,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80074 conditions, 13048 events. 7870/13048 cut-off events. For 485408/485410 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 92688 event pairs, 1999 based on Foata normal form. 8/12707 useless extension candidates. Maximal degree in co-relation 79967. Up to 9174 conditions per place. [2024-06-28 01:24:10,253 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 302 selfloop transitions, 185 changer transitions 0/497 dead transitions. [2024-06-28 01:24:10,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 497 transitions, 6586 flow [2024-06-28 01:24:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:24:10,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-28 01:24:10,255 INFO L175 Difference]: Start difference. First operand has 237 places, 423 transitions, 4958 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:24:10,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 497 transitions, 6586 flow [2024-06-28 01:24:11,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 497 transitions, 6499 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:24:11,253 INFO L231 Difference]: Finished difference. Result has 243 places, 427 transitions, 5377 flow [2024-06-28 01:24:11,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4875, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5377, PETRI_PLACES=243, PETRI_TRANSITIONS=427} [2024-06-28 01:24:11,254 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 188 predicate places. [2024-06-28 01:24:11,254 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 427 transitions, 5377 flow [2024-06-28 01:24:11,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:11,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:11,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:24:11,254 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:11,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -457095268, now seen corresponding path program 12 times [2024-06-28 01:24:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:11,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144034982] [2024-06-28 01:24:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144034982] [2024-06-28 01:24:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144034982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135421299] [2024-06-28 01:24:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:12,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:12,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 427 transitions, 5377 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:12,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:12,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:12,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:14,636 INFO L124 PetriNetUnfolderBase]: 7987/13311 cut-off events. [2024-06-28 01:24:14,637 INFO L125 PetriNetUnfolderBase]: For 518139/518141 co-relation queries the response was YES. [2024-06-28 01:24:14,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83976 conditions, 13311 events. 7987/13311 cut-off events. For 518139/518141 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 95526 event pairs, 2790 based on Foata normal form. 10/12948 useless extension candidates. Maximal degree in co-relation 83868. Up to 10918 conditions per place. [2024-06-28 01:24:14,829 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 383 selfloop transitions, 101 changer transitions 0/494 dead transitions. [2024-06-28 01:24:14,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 494 transitions, 6871 flow [2024-06-28 01:24:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:24:14,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:24:14,831 INFO L175 Difference]: Start difference. First operand has 243 places, 427 transitions, 5377 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:24:14,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 494 transitions, 6871 flow [2024-06-28 01:24:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 494 transitions, 6529 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:15,759 INFO L231 Difference]: Finished difference. Result has 244 places, 435 transitions, 5515 flow [2024-06-28 01:24:15,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5043, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5515, PETRI_PLACES=244, PETRI_TRANSITIONS=435} [2024-06-28 01:24:15,759 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 189 predicate places. [2024-06-28 01:24:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 435 transitions, 5515 flow [2024-06-28 01:24:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:15,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:15,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:24:15,763 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:15,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash 402226038, now seen corresponding path program 13 times [2024-06-28 01:24:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879422946] [2024-06-28 01:24:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879422946] [2024-06-28 01:24:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879422946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:16,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624729686] [2024-06-28 01:24:16,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:16,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:16,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:16,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 435 transitions, 5515 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:16,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:16,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:16,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:19,162 INFO L124 PetriNetUnfolderBase]: 7969/13135 cut-off events. [2024-06-28 01:24:19,162 INFO L125 PetriNetUnfolderBase]: For 477148/477150 co-relation queries the response was YES. [2024-06-28 01:24:19,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81709 conditions, 13135 events. 7969/13135 cut-off events. For 477148/477150 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 92991 event pairs, 2586 based on Foata normal form. 10/12808 useless extension candidates. Maximal degree in co-relation 81601. Up to 10244 conditions per place. [2024-06-28 01:24:19,342 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 345 selfloop transitions, 137 changer transitions 0/492 dead transitions. [2024-06-28 01:24:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 492 transitions, 6749 flow [2024-06-28 01:24:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:24:19,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:24:19,343 INFO L175 Difference]: Start difference. First operand has 244 places, 435 transitions, 5515 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:24:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 492 transitions, 6749 flow [2024-06-28 01:24:20,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 492 transitions, 6314 flow, removed 124 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:20,482 INFO L231 Difference]: Finished difference. Result has 245 places, 435 transitions, 5386 flow [2024-06-28 01:24:20,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5386, PETRI_PLACES=245, PETRI_TRANSITIONS=435} [2024-06-28 01:24:20,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-28 01:24:20,484 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 435 transitions, 5386 flow [2024-06-28 01:24:20,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:20,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:20,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:20,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:24:20,485 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:20,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash -313204738, now seen corresponding path program 14 times [2024-06-28 01:24:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908432199] [2024-06-28 01:24:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:21,380 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 01:24:21,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:21,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908432199] [2024-06-28 01:24:21,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908432199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:21,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600201143] [2024-06-28 01:24:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:21,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:21,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 435 transitions, 5386 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:21,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:21,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:23,893 INFO L124 PetriNetUnfolderBase]: 8006/13054 cut-off events. [2024-06-28 01:24:23,893 INFO L125 PetriNetUnfolderBase]: For 446438/446441 co-relation queries the response was YES. [2024-06-28 01:24:24,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81287 conditions, 13054 events. 8006/13054 cut-off events. For 446438/446441 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 91986 event pairs, 2257 based on Foata normal form. 6/12750 useless extension candidates. Maximal degree in co-relation 81179. Up to 10681 conditions per place. [2024-06-28 01:24:24,092 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 335 selfloop transitions, 155 changer transitions 0/500 dead transitions. [2024-06-28 01:24:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 500 transitions, 6806 flow [2024-06-28 01:24:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:24:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-28 01:24:24,093 INFO L175 Difference]: Start difference. First operand has 245 places, 435 transitions, 5386 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:24:24,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 500 transitions, 6806 flow [2024-06-28 01:24:24,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 500 transitions, 6410 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:24,908 INFO L231 Difference]: Finished difference. Result has 245 places, 437 transitions, 5381 flow [2024-06-28 01:24:24,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5381, PETRI_PLACES=245, PETRI_TRANSITIONS=437} [2024-06-28 01:24:24,908 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-28 01:24:24,908 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 437 transitions, 5381 flow [2024-06-28 01:24:24,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:24,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:24,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:24:24,909 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash -318711268, now seen corresponding path program 15 times [2024-06-28 01:24:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320483226] [2024-06-28 01:24:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:25,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320483226] [2024-06-28 01:24:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320483226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:25,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299175523] [2024-06-28 01:24:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:25,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:25,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 437 transitions, 5381 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:25,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:25,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:25,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:28,354 INFO L124 PetriNetUnfolderBase]: 8043/13168 cut-off events. [2024-06-28 01:24:28,354 INFO L125 PetriNetUnfolderBase]: For 434595/434598 co-relation queries the response was YES. [2024-06-28 01:24:28,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81572 conditions, 13168 events. 8043/13168 cut-off events. For 434595/434598 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93318 event pairs, 2292 based on Foata normal form. 6/12850 useless extension candidates. Maximal degree in co-relation 81464. Up to 10736 conditions per place. [2024-06-28 01:24:28,529 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 337 selfloop transitions, 151 changer transitions 0/498 dead transitions. [2024-06-28 01:24:28,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 498 transitions, 6771 flow [2024-06-28 01:24:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:24:28,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:24:28,530 INFO L175 Difference]: Start difference. First operand has 245 places, 437 transitions, 5381 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:24:28,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 498 transitions, 6771 flow [2024-06-28 01:24:29,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 498 transitions, 6398 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:29,266 INFO L231 Difference]: Finished difference. Result has 247 places, 439 transitions, 5395 flow [2024-06-28 01:24:29,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5012, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5395, PETRI_PLACES=247, PETRI_TRANSITIONS=439} [2024-06-28 01:24:29,266 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2024-06-28 01:24:29,266 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 439 transitions, 5395 flow [2024-06-28 01:24:29,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:29,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:29,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:29,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:24:29,267 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:29,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:29,267 INFO L85 PathProgramCache]: Analyzing trace with hash -318714988, now seen corresponding path program 16 times [2024-06-28 01:24:29,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:29,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569063054] [2024-06-28 01:24:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:30,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569063054] [2024-06-28 01:24:30,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569063054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:30,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:30,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206923930] [2024-06-28 01:24:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:30,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:30,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 439 transitions, 5395 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:30,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:30,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:30,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:32,539 INFO L124 PetriNetUnfolderBase]: 8080/13192 cut-off events. [2024-06-28 01:24:32,539 INFO L125 PetriNetUnfolderBase]: For 434808/434811 co-relation queries the response was YES. [2024-06-28 01:24:32,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81749 conditions, 13192 events. 8080/13192 cut-off events. For 434808/434811 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93188 event pairs, 2263 based on Foata normal form. 6/12881 useless extension candidates. Maximal degree in co-relation 81640. Up to 10555 conditions per place. [2024-06-28 01:24:32,699 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 328 selfloop transitions, 161 changer transitions 0/499 dead transitions. [2024-06-28 01:24:32,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 499 transitions, 6767 flow [2024-06-28 01:24:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:24:32,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-28 01:24:32,701 INFO L175 Difference]: Start difference. First operand has 247 places, 439 transitions, 5395 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:24:32,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 499 transitions, 6767 flow [2024-06-28 01:24:33,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 499 transitions, 6402 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:33,466 INFO L231 Difference]: Finished difference. Result has 249 places, 441 transitions, 5436 flow [2024-06-28 01:24:33,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5436, PETRI_PLACES=249, PETRI_TRANSITIONS=441} [2024-06-28 01:24:33,467 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 194 predicate places. [2024-06-28 01:24:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 441 transitions, 5436 flow [2024-06-28 01:24:33,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:33,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:33,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:24:33,467 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:33,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash 479565869, now seen corresponding path program 2 times [2024-06-28 01:24:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302527452] [2024-06-28 01:24:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:34,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302527452] [2024-06-28 01:24:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302527452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:24:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050532275] [2024-06-28 01:24:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:34,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:24:34,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:24:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:24:34,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:24:34,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 441 transitions, 5436 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:34,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:34,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:24:34,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:36,434 INFO L124 PetriNetUnfolderBase]: 7017/11929 cut-off events. [2024-06-28 01:24:36,434 INFO L125 PetriNetUnfolderBase]: For 418077/418147 co-relation queries the response was YES. [2024-06-28 01:24:36,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73196 conditions, 11929 events. 7017/11929 cut-off events. For 418077/418147 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88539 event pairs, 2269 based on Foata normal form. 17/11570 useless extension candidates. Maximal degree in co-relation 73086. Up to 9604 conditions per place. [2024-06-28 01:24:36,592 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 340 selfloop transitions, 37 changer transitions 0/470 dead transitions. [2024-06-28 01:24:36,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 470 transitions, 6366 flow [2024-06-28 01:24:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:24:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:24:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:24:36,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-06-28 01:24:36,593 INFO L175 Difference]: Start difference. First operand has 249 places, 441 transitions, 5436 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:24:36,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 470 transitions, 6366 flow [2024-06-28 01:24:37,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 470 transitions, 5984 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:37,294 INFO L231 Difference]: Finished difference. Result has 249 places, 444 transitions, 5188 flow [2024-06-28 01:24:37,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5188, PETRI_PLACES=249, PETRI_TRANSITIONS=444} [2024-06-28 01:24:37,295 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 194 predicate places. [2024-06-28 01:24:37,295 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 444 transitions, 5188 flow [2024-06-28 01:24:37,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:37,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:37,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:37,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:24:37,295 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:37,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash 867069152, now seen corresponding path program 17 times [2024-06-28 01:24:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:37,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723831823] [2024-06-28 01:24:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:37,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:38,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:38,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723831823] [2024-06-28 01:24:38,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723831823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:38,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:38,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330077210] [2024-06-28 01:24:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:38,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:38,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:38,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 444 transitions, 5188 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:38,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:38,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:38,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:40,734 INFO L124 PetriNetUnfolderBase]: 8151/13335 cut-off events. [2024-06-28 01:24:40,735 INFO L125 PetriNetUnfolderBase]: For 427164/427164 co-relation queries the response was YES. [2024-06-28 01:24:40,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81656 conditions, 13335 events. 8151/13335 cut-off events. For 427164/427164 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 94662 event pairs, 2235 based on Foata normal form. 4/13008 useless extension candidates. Maximal degree in co-relation 81545. Up to 10926 conditions per place. [2024-06-28 01:24:40,925 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 341 selfloop transitions, 153 changer transitions 0/504 dead transitions. [2024-06-28 01:24:40,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 504 transitions, 6578 flow [2024-06-28 01:24:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:24:40,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:24:40,927 INFO L175 Difference]: Start difference. First operand has 249 places, 444 transitions, 5188 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:24:40,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 504 transitions, 6578 flow [2024-06-28 01:24:41,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 504 transitions, 6472 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:41,617 INFO L231 Difference]: Finished difference. Result has 253 places, 446 transitions, 5466 flow [2024-06-28 01:24:41,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5466, PETRI_PLACES=253, PETRI_TRANSITIONS=446} [2024-06-28 01:24:41,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 198 predicate places. [2024-06-28 01:24:41,619 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 446 transitions, 5466 flow [2024-06-28 01:24:41,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:41,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:41,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:24:41,620 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:41,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1900384254, now seen corresponding path program 18 times [2024-06-28 01:24:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103324385] [2024-06-28 01:24:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103324385] [2024-06-28 01:24:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103324385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:42,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097834971] [2024-06-28 01:24:42,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:42,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:42,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:42,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 446 transitions, 5466 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:42,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:42,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:42,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:45,124 INFO L124 PetriNetUnfolderBase]: 8188/13392 cut-off events. [2024-06-28 01:24:45,124 INFO L125 PetriNetUnfolderBase]: For 435368/435368 co-relation queries the response was YES. [2024-06-28 01:24:45,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82565 conditions, 13392 events. 8188/13392 cut-off events. For 435368/435368 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 94992 event pairs, 2282 based on Foata normal form. 4/13069 useless extension candidates. Maximal degree in co-relation 82453. Up to 10981 conditions per place. [2024-06-28 01:24:45,319 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 345 selfloop transitions, 146 changer transitions 0/501 dead transitions. [2024-06-28 01:24:45,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 501 transitions, 6812 flow [2024-06-28 01:24:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:24:45,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-06-28 01:24:45,320 INFO L175 Difference]: Start difference. First operand has 253 places, 446 transitions, 5466 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:24:45,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 501 transitions, 6812 flow [2024-06-28 01:24:46,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 501 transitions, 6448 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:46,185 INFO L231 Difference]: Finished difference. Result has 255 places, 448 transitions, 5476 flow [2024-06-28 01:24:46,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5476, PETRI_PLACES=255, PETRI_TRANSITIONS=448} [2024-06-28 01:24:46,186 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 200 predicate places. [2024-06-28 01:24:46,186 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 448 transitions, 5476 flow [2024-06-28 01:24:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:46,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:24:46,186 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1895021874, now seen corresponding path program 19 times [2024-06-28 01:24:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899935554] [2024-06-28 01:24:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:47,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899935554] [2024-06-28 01:24:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899935554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:47,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:47,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403462230] [2024-06-28 01:24:47,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:47,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:47,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:47,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 448 transitions, 5476 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:47,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:47,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:49,855 INFO L124 PetriNetUnfolderBase]: 8225/13446 cut-off events. [2024-06-28 01:24:49,855 INFO L125 PetriNetUnfolderBase]: For 452106/452106 co-relation queries the response was YES. [2024-06-28 01:24:49,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83291 conditions, 13446 events. 8225/13446 cut-off events. For 452106/452106 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 95514 event pairs, 2302 based on Foata normal form. 4/13120 useless extension candidates. Maximal degree in co-relation 83178. Up to 11036 conditions per place. [2024-06-28 01:24:50,012 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 348 selfloop transitions, 145 changer transitions 0/503 dead transitions. [2024-06-28 01:24:50,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 503 transitions, 6830 flow [2024-06-28 01:24:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:24:50,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:24:50,013 INFO L175 Difference]: Start difference. First operand has 255 places, 448 transitions, 5476 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:24:50,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 503 transitions, 6830 flow [2024-06-28 01:24:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 503 transitions, 6476 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:50,583 INFO L231 Difference]: Finished difference. Result has 257 places, 450 transitions, 5498 flow [2024-06-28 01:24:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5122, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5498, PETRI_PLACES=257, PETRI_TRANSITIONS=450} [2024-06-28 01:24:50,584 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 202 predicate places. [2024-06-28 01:24:50,584 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 450 transitions, 5498 flow [2024-06-28 01:24:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:50,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:50,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:50,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:24:50,584 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:50,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1900532124, now seen corresponding path program 20 times [2024-06-28 01:24:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:50,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379628159] [2024-06-28 01:24:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:50,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379628159] [2024-06-28 01:24:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379628159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:24:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597404528] [2024-06-28 01:24:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:24:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:24:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:24:51,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:24:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 450 transitions, 5498 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:24:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:54,166 INFO L124 PetriNetUnfolderBase]: 8217/13411 cut-off events. [2024-06-28 01:24:54,166 INFO L125 PetriNetUnfolderBase]: For 458673/458673 co-relation queries the response was YES. [2024-06-28 01:24:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83085 conditions, 13411 events. 8217/13411 cut-off events. For 458673/458673 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 94962 event pairs, 2274 based on Foata normal form. 4/13094 useless extension candidates. Maximal degree in co-relation 82971. Up to 10858 conditions per place. [2024-06-28 01:24:54,331 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 342 selfloop transitions, 153 changer transitions 0/505 dead transitions. [2024-06-28 01:24:54,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 505 transitions, 6852 flow [2024-06-28 01:24:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:24:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:24:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:24:54,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:24:54,333 INFO L175 Difference]: Start difference. First operand has 257 places, 450 transitions, 5498 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:24:54,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 505 transitions, 6852 flow [2024-06-28 01:24:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 505 transitions, 6496 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:55,150 INFO L231 Difference]: Finished difference. Result has 259 places, 452 transitions, 5537 flow [2024-06-28 01:24:55,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5537, PETRI_PLACES=259, PETRI_TRANSITIONS=452} [2024-06-28 01:24:55,150 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 204 predicate places. [2024-06-28 01:24:55,151 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 452 transitions, 5537 flow [2024-06-28 01:24:55,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:55,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:55,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:24:55,151 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:55,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 894300299, now seen corresponding path program 3 times [2024-06-28 01:24:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406534628] [2024-06-28 01:24:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:56,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:56,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406534628] [2024-06-28 01:24:56,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406534628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:56,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:56,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:24:56,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830110145] [2024-06-28 01:24:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:24:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:24:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:24:56,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:24:56,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 452 transitions, 5537 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:56,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:56,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:24:56,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:58,306 INFO L124 PetriNetUnfolderBase]: 7116/12311 cut-off events. [2024-06-28 01:24:58,306 INFO L125 PetriNetUnfolderBase]: For 451820/451890 co-relation queries the response was YES. [2024-06-28 01:24:58,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74543 conditions, 12311 events. 7116/12311 cut-off events. For 451820/451890 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 93253 event pairs, 2281 based on Foata normal form. 24/11889 useless extension candidates. Maximal degree in co-relation 74428. Up to 9683 conditions per place. [2024-06-28 01:24:58,470 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 339 selfloop transitions, 48 changer transitions 0/484 dead transitions. [2024-06-28 01:24:58,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 484 transitions, 6639 flow [2024-06-28 01:24:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:24:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:24:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:24:58,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-28 01:24:58,471 INFO L175 Difference]: Start difference. First operand has 259 places, 452 transitions, 5537 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:24:58,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 484 transitions, 6639 flow [2024-06-28 01:24:59,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 484 transitions, 6262 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:59,187 INFO L231 Difference]: Finished difference. Result has 260 places, 460 transitions, 5383 flow [2024-06-28 01:24:59,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5160, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5383, PETRI_PLACES=260, PETRI_TRANSITIONS=460} [2024-06-28 01:24:59,187 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2024-06-28 01:24:59,187 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 460 transitions, 5383 flow [2024-06-28 01:24:59,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:59,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:59,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:24:59,188 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:24:59,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 893795309, now seen corresponding path program 4 times [2024-06-28 01:24:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753916624] [2024-06-28 01:24:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:00,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753916624] [2024-06-28 01:25:00,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753916624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:00,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:00,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542821250] [2024-06-28 01:25:00,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:00,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:00,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:00,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:25:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 460 transitions, 5383 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:00,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:00,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:25:00,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:02,296 INFO L124 PetriNetUnfolderBase]: 7113/12305 cut-off events. [2024-06-28 01:25:02,297 INFO L125 PetriNetUnfolderBase]: For 459319/459392 co-relation queries the response was YES. [2024-06-28 01:25:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74464 conditions, 12305 events. 7113/12305 cut-off events. For 459319/459392 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 93195 event pairs, 2283 based on Foata normal form. 28/11889 useless extension candidates. Maximal degree in co-relation 74347. Up to 9746 conditions per place. [2024-06-28 01:25:02,467 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 349 selfloop transitions, 38 changer transitions 0/484 dead transitions. [2024-06-28 01:25:02,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 484 transitions, 6282 flow [2024-06-28 01:25:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:25:02,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:25:02,468 INFO L175 Difference]: Start difference. First operand has 260 places, 460 transitions, 5383 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:25:02,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 484 transitions, 6282 flow [2024-06-28 01:25:03,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 484 transitions, 6172 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 01:25:03,259 INFO L231 Difference]: Finished difference. Result has 264 places, 461 transitions, 5364 flow [2024-06-28 01:25:03,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5364, PETRI_PLACES=264, PETRI_TRANSITIONS=461} [2024-06-28 01:25:03,260 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2024-06-28 01:25:03,260 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 461 transitions, 5364 flow [2024-06-28 01:25:03,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:03,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:03,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:03,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:25:03,260 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash 656701202, now seen corresponding path program 1 times [2024-06-28 01:25:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783105014] [2024-06-28 01:25:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783105014] [2024-06-28 01:25:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783105014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:04,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749783601] [2024-06-28 01:25:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:04,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:25:04,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 461 transitions, 5364 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:04,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:04,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:25:04,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:06,382 INFO L124 PetriNetUnfolderBase]: 7912/13392 cut-off events. [2024-06-28 01:25:06,383 INFO L125 PetriNetUnfolderBase]: For 492223/492245 co-relation queries the response was YES. [2024-06-28 01:25:06,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81945 conditions, 13392 events. 7912/13392 cut-off events. For 492223/492245 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 98560 event pairs, 3098 based on Foata normal form. 7/13018 useless extension candidates. Maximal degree in co-relation 81826. Up to 11244 conditions per place. [2024-06-28 01:25:06,567 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 459 selfloop transitions, 18 changer transitions 0/493 dead transitions. [2024-06-28 01:25:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 493 transitions, 6543 flow [2024-06-28 01:25:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:25:06,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:25:06,568 INFO L175 Difference]: Start difference. First operand has 264 places, 461 transitions, 5364 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:25:06,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 493 transitions, 6543 flow [2024-06-28 01:25:07,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 493 transitions, 6463 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:07,343 INFO L231 Difference]: Finished difference. Result has 267 places, 468 transitions, 5436 flow [2024-06-28 01:25:07,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5284, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5436, PETRI_PLACES=267, PETRI_TRANSITIONS=468} [2024-06-28 01:25:07,345 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-28 01:25:07,345 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 468 transitions, 5436 flow [2024-06-28 01:25:07,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:07,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:07,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:07,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:25:07,346 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash 406727530, now seen corresponding path program 2 times [2024-06-28 01:25:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058062282] [2024-06-28 01:25:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058062282] [2024-06-28 01:25:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058062282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:08,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330471812] [2024-06-28 01:25:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:08,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:25:08,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 468 transitions, 5436 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:08,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:08,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:25:08,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:10,536 INFO L124 PetriNetUnfolderBase]: 7929/13418 cut-off events. [2024-06-28 01:25:10,536 INFO L125 PetriNetUnfolderBase]: For 509305/509327 co-relation queries the response was YES. [2024-06-28 01:25:10,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83334 conditions, 13418 events. 7929/13418 cut-off events. For 509305/509327 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 98663 event pairs, 3096 based on Foata normal form. 7/13043 useless extension candidates. Maximal degree in co-relation 83213. Up to 11247 conditions per place. [2024-06-28 01:25:10,721 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 456 selfloop transitions, 23 changer transitions 0/495 dead transitions. [2024-06-28 01:25:10,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 495 transitions, 6588 flow [2024-06-28 01:25:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:25:10,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:25:10,723 INFO L175 Difference]: Start difference. First operand has 267 places, 468 transitions, 5436 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:25:10,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 495 transitions, 6588 flow [2024-06-28 01:25:11,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 495 transitions, 6503 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 01:25:11,532 INFO L231 Difference]: Finished difference. Result has 270 places, 471 transitions, 5473 flow [2024-06-28 01:25:11,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5351, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5473, PETRI_PLACES=270, PETRI_TRANSITIONS=471} [2024-06-28 01:25:11,533 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 215 predicate places. [2024-06-28 01:25:11,533 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 471 transitions, 5473 flow [2024-06-28 01:25:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:11,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:25:11,533 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:11,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 406727809, now seen corresponding path program 1 times [2024-06-28 01:25:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112710338] [2024-06-28 01:25:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112710338] [2024-06-28 01:25:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112710338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841958469] [2024-06-28 01:25:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:12,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:12,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:25:12,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 471 transitions, 5473 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:12,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:12,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:25:12,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:14,796 INFO L124 PetriNetUnfolderBase]: 7421/12903 cut-off events. [2024-06-28 01:25:14,797 INFO L125 PetriNetUnfolderBase]: For 513029/513069 co-relation queries the response was YES. [2024-06-28 01:25:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78751 conditions, 12903 events. 7421/12903 cut-off events. For 513029/513069 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 98073 event pairs, 3040 based on Foata normal form. 14/12515 useless extension candidates. Maximal degree in co-relation 78629. Up to 10178 conditions per place. [2024-06-28 01:25:14,987 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 388 selfloop transitions, 18 changer transitions 0/498 dead transitions. [2024-06-28 01:25:14,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 498 transitions, 6463 flow [2024-06-28 01:25:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:25:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:25:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:25:14,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2024-06-28 01:25:14,988 INFO L175 Difference]: Start difference. First operand has 270 places, 471 transitions, 5473 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:25:14,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 498 transitions, 6463 flow [2024-06-28 01:25:15,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 498 transitions, 6363 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:15,735 INFO L231 Difference]: Finished difference. Result has 273 places, 474 transitions, 5469 flow [2024-06-28 01:25:15,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5373, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5469, PETRI_PLACES=273, PETRI_TRANSITIONS=474} [2024-06-28 01:25:15,737 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 218 predicate places. [2024-06-28 01:25:15,737 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 474 transitions, 5469 flow [2024-06-28 01:25:15,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:15,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:15,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:15,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:25:15,738 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:15,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:15,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1438360999, now seen corresponding path program 2 times [2024-06-28 01:25:15,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:15,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786037527] [2024-06-28 01:25:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:15,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786037527] [2024-06-28 01:25:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786037527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:16,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:16,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:16,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763397944] [2024-06-28 01:25:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:16,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:16,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:16,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:25:16,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 474 transitions, 5469 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:16,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:16,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:25:16,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:18,864 INFO L124 PetriNetUnfolderBase]: 7476/13146 cut-off events. [2024-06-28 01:25:18,864 INFO L125 PetriNetUnfolderBase]: For 532755/532808 co-relation queries the response was YES. [2024-06-28 01:25:18,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80275 conditions, 13146 events. 7476/13146 cut-off events. For 532755/532808 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 101035 event pairs, 3027 based on Foata normal form. 21/12721 useless extension candidates. Maximal degree in co-relation 80152. Up to 10145 conditions per place. [2024-06-28 01:25:19,053 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 384 selfloop transitions, 31 changer transitions 0/507 dead transitions. [2024-06-28 01:25:19,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 507 transitions, 6679 flow [2024-06-28 01:25:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:25:19,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-28 01:25:19,054 INFO L175 Difference]: Start difference. First operand has 273 places, 474 transitions, 5469 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:25:19,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 507 transitions, 6679 flow [2024-06-28 01:25:20,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 507 transitions, 6605 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:25:20,065 INFO L231 Difference]: Finished difference. Result has 275 places, 481 transitions, 5606 flow [2024-06-28 01:25:20,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5606, PETRI_PLACES=275, PETRI_TRANSITIONS=481} [2024-06-28 01:25:20,066 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 220 predicate places. [2024-06-28 01:25:20,066 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 481 transitions, 5606 flow [2024-06-28 01:25:20,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:20,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:20,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:20,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:25:20,066 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:20,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash 893979821, now seen corresponding path program 3 times [2024-06-28 01:25:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:20,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514099610] [2024-06-28 01:25:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:20,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:20,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514099610] [2024-06-28 01:25:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514099610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:20,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:20,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912183164] [2024-06-28 01:25:20,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:20,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:21,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:25:21,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 481 transitions, 5606 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:21,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:21,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:25:21,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:23,690 INFO L124 PetriNetUnfolderBase]: 7480/13166 cut-off events. [2024-06-28 01:25:23,690 INFO L125 PetriNetUnfolderBase]: For 545778/545831 co-relation queries the response was YES. [2024-06-28 01:25:23,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81394 conditions, 13166 events. 7480/13166 cut-off events. For 545778/545831 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 101402 event pairs, 3035 based on Foata normal form. 20/12734 useless extension candidates. Maximal degree in co-relation 81269. Up to 10243 conditions per place. [2024-06-28 01:25:23,873 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 393 selfloop transitions, 22 changer transitions 0/507 dead transitions. [2024-06-28 01:25:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 507 transitions, 6620 flow [2024-06-28 01:25:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:25:23,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:25:23,875 INFO L175 Difference]: Start difference. First operand has 275 places, 481 transitions, 5606 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:25:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 507 transitions, 6620 flow [2024-06-28 01:25:24,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 507 transitions, 6549 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:25:24,676 INFO L231 Difference]: Finished difference. Result has 279 places, 484 transitions, 5651 flow [2024-06-28 01:25:24,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5651, PETRI_PLACES=279, PETRI_TRANSITIONS=484} [2024-06-28 01:25:24,676 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 224 predicate places. [2024-06-28 01:25:24,676 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 484 transitions, 5651 flow [2024-06-28 01:25:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:24,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:24,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:25:24,677 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:24,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 893979542, now seen corresponding path program 3 times [2024-06-28 01:25:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:24,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661158929] [2024-06-28 01:25:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661158929] [2024-06-28 01:25:25,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661158929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:25,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:25,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980242614] [2024-06-28 01:25:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:25,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:25:25,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 484 transitions, 5651 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:25,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:25,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:25:25,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:28,024 INFO L124 PetriNetUnfolderBase]: 7997/13698 cut-off events. [2024-06-28 01:25:28,024 INFO L125 PetriNetUnfolderBase]: For 566832/566868 co-relation queries the response was YES. [2024-06-28 01:25:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87150 conditions, 13698 events. 7997/13698 cut-off events. For 566832/566868 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 102092 event pairs, 3091 based on Foata normal form. 11/13274 useless extension candidates. Maximal degree in co-relation 87023. Up to 11308 conditions per place. [2024-06-28 01:25:28,232 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 464 selfloop transitions, 30 changer transitions 0/510 dead transitions. [2024-06-28 01:25:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 510 transitions, 6837 flow [2024-06-28 01:25:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:25:28,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:25:28,233 INFO L175 Difference]: Start difference. First operand has 279 places, 484 transitions, 5651 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:25:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 510 transitions, 6837 flow [2024-06-28 01:25:29,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 510 transitions, 6755 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:29,197 INFO L231 Difference]: Finished difference. Result has 281 places, 487 transitions, 5715 flow [2024-06-28 01:25:29,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5715, PETRI_PLACES=281, PETRI_TRANSITIONS=487} [2024-06-28 01:25:29,197 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 226 predicate places. [2024-06-28 01:25:29,197 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 487 transitions, 5715 flow [2024-06-28 01:25:29,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:29,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:29,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:25:29,198 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:29,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 894318155, now seen corresponding path program 1 times [2024-06-28 01:25:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:29,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957253934] [2024-06-28 01:25:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:29,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957253934] [2024-06-28 01:25:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957253934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:30,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500207294] [2024-06-28 01:25:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:30,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:30,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:25:30,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 487 transitions, 5715 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:30,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:30,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:25:30,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:33,140 INFO L124 PetriNetUnfolderBase]: 7282/12849 cut-off events. [2024-06-28 01:25:33,140 INFO L125 PetriNetUnfolderBase]: For 571000/571078 co-relation queries the response was YES. [2024-06-28 01:25:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80709 conditions, 12849 events. 7282/12849 cut-off events. For 571000/571078 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 99300 event pairs, 3127 based on Foata normal form. 14/12341 useless extension candidates. Maximal degree in co-relation 80581. Up to 10087 conditions per place. [2024-06-28 01:25:33,340 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 397 selfloop transitions, 19 changer transitions 0/517 dead transitions. [2024-06-28 01:25:33,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 517 transitions, 6735 flow [2024-06-28 01:25:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:25:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:25:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:25:33,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:25:33,341 INFO L175 Difference]: Start difference. First operand has 281 places, 487 transitions, 5715 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:25:33,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 517 transitions, 6735 flow [2024-06-28 01:25:34,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 517 transitions, 6611 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:34,127 INFO L231 Difference]: Finished difference. Result has 284 places, 489 transitions, 5675 flow [2024-06-28 01:25:34,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5591, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5675, PETRI_PLACES=284, PETRI_TRANSITIONS=489} [2024-06-28 01:25:34,127 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 229 predicate places. [2024-06-28 01:25:34,127 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 489 transitions, 5675 flow [2024-06-28 01:25:34,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:34,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:34,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:25:34,128 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:34,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash 652838089, now seen corresponding path program 1 times [2024-06-28 01:25:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197777133] [2024-06-28 01:25:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:34,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:35,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:35,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197777133] [2024-06-28 01:25:35,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197777133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:35,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:35,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:35,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707463186] [2024-06-28 01:25:35,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:35,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:35,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:35,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:35,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:35,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 489 transitions, 5675 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:35,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:35,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:37,918 INFO L124 PetriNetUnfolderBase]: 8766/14598 cut-off events. [2024-06-28 01:25:37,918 INFO L125 PetriNetUnfolderBase]: For 696026/696028 co-relation queries the response was YES. [2024-06-28 01:25:38,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96476 conditions, 14598 events. 8766/14598 cut-off events. For 696026/696028 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 106736 event pairs, 2677 based on Foata normal form. 18/14220 useless extension candidates. Maximal degree in co-relation 96347. Up to 10562 conditions per place. [2024-06-28 01:25:38,115 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 452 selfloop transitions, 140 changer transitions 0/602 dead transitions. [2024-06-28 01:25:38,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 602 transitions, 7791 flow [2024-06-28 01:25:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 340 transitions. [2024-06-28 01:25:38,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533751962323391 [2024-06-28 01:25:38,116 INFO L175 Difference]: Start difference. First operand has 284 places, 489 transitions, 5675 flow. Second operand 13 states and 340 transitions. [2024-06-28 01:25:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 602 transitions, 7791 flow [2024-06-28 01:25:39,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 602 transitions, 7675 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:39,145 INFO L231 Difference]: Finished difference. Result has 291 places, 496 transitions, 6028 flow [2024-06-28 01:25:39,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5559, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6028, PETRI_PLACES=291, PETRI_TRANSITIONS=496} [2024-06-28 01:25:39,145 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 236 predicate places. [2024-06-28 01:25:39,146 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 496 transitions, 6028 flow [2024-06-28 01:25:39,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:39,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:25:39,146 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:39,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash -46041161, now seen corresponding path program 2 times [2024-06-28 01:25:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957725186] [2024-06-28 01:25:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:40,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:40,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957725186] [2024-06-28 01:25:40,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957725186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:40,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:40,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454249678] [2024-06-28 01:25:40,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:40,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:40,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:40,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:40,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:40,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 496 transitions, 6028 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:40,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:40,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:40,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:43,226 INFO L124 PetriNetUnfolderBase]: 9098/15144 cut-off events. [2024-06-28 01:25:43,227 INFO L125 PetriNetUnfolderBase]: For 788919/788921 co-relation queries the response was YES. [2024-06-28 01:25:43,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104010 conditions, 15144 events. 9098/15144 cut-off events. For 788919/788921 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 111399 event pairs, 3021 based on Foata normal form. 18/14764 useless extension candidates. Maximal degree in co-relation 103880. Up to 11878 conditions per place. [2024-06-28 01:25:43,468 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 484 selfloop transitions, 107 changer transitions 0/601 dead transitions. [2024-06-28 01:25:43,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 601 transitions, 8121 flow [2024-06-28 01:25:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 339 transitions. [2024-06-28 01:25:43,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321821036106751 [2024-06-28 01:25:43,470 INFO L175 Difference]: Start difference. First operand has 291 places, 496 transitions, 6028 flow. Second operand 13 states and 339 transitions. [2024-06-28 01:25:43,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 601 transitions, 8121 flow [2024-06-28 01:25:44,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 601 transitions, 7962 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:44,569 INFO L231 Difference]: Finished difference. Result has 297 places, 501 transitions, 6231 flow [2024-06-28 01:25:44,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5877, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6231, PETRI_PLACES=297, PETRI_TRANSITIONS=501} [2024-06-28 01:25:44,570 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 242 predicate places. [2024-06-28 01:25:44,570 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 501 transitions, 6231 flow [2024-06-28 01:25:44,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:44,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:44,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:44,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:25:44,570 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:44,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -41457191, now seen corresponding path program 3 times [2024-06-28 01:25:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:44,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974387417] [2024-06-28 01:25:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:45,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974387417] [2024-06-28 01:25:45,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974387417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:45,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:45,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:45,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431143423] [2024-06-28 01:25:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:45,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:45,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:45,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:45,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 501 transitions, 6231 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:45,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:45,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:49,018 INFO L124 PetriNetUnfolderBase]: 9228/15412 cut-off events. [2024-06-28 01:25:49,018 INFO L125 PetriNetUnfolderBase]: For 802216/802218 co-relation queries the response was YES. [2024-06-28 01:25:49,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105551 conditions, 15412 events. 9228/15412 cut-off events. For 802216/802218 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 114113 event pairs, 3159 based on Foata normal form. 18/15018 useless extension candidates. Maximal degree in co-relation 105419. Up to 12350 conditions per place. [2024-06-28 01:25:49,323 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 491 selfloop transitions, 99 changer transitions 0/600 dead transitions. [2024-06-28 01:25:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 600 transitions, 8245 flow [2024-06-28 01:25:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-06-28 01:25:49,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290423861852434 [2024-06-28 01:25:49,324 INFO L175 Difference]: Start difference. First operand has 297 places, 501 transitions, 6231 flow. Second operand 13 states and 337 transitions. [2024-06-28 01:25:49,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 600 transitions, 8245 flow [2024-06-28 01:25:50,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 600 transitions, 8081 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:50,738 INFO L231 Difference]: Finished difference. Result has 302 places, 502 transitions, 6330 flow [2024-06-28 01:25:50,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6330, PETRI_PLACES=302, PETRI_TRANSITIONS=502} [2024-06-28 01:25:50,739 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 247 predicate places. [2024-06-28 01:25:50,739 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 502 transitions, 6330 flow [2024-06-28 01:25:50,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:50,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:25:50,739 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:50,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 906197223, now seen corresponding path program 4 times [2024-06-28 01:25:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655083228] [2024-06-28 01:25:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655083228] [2024-06-28 01:25:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655083228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:51,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972911945] [2024-06-28 01:25:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:52,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:52,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 502 transitions, 6330 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:52,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:52,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:55,543 INFO L124 PetriNetUnfolderBase]: 9192/15418 cut-off events. [2024-06-28 01:25:55,543 INFO L125 PetriNetUnfolderBase]: For 778498/778500 co-relation queries the response was YES. [2024-06-28 01:25:55,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103816 conditions, 15418 events. 9192/15418 cut-off events. For 778498/778500 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 114678 event pairs, 3238 based on Foata normal form. 22/15012 useless extension candidates. Maximal degree in co-relation 103682. Up to 12637 conditions per place. [2024-06-28 01:25:56,048 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 490 selfloop transitions, 92 changer transitions 0/592 dead transitions. [2024-06-28 01:25:56,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 592 transitions, 8002 flow [2024-06-28 01:25:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 331 transitions. [2024-06-28 01:25:56,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196232339089482 [2024-06-28 01:25:56,065 INFO L175 Difference]: Start difference. First operand has 302 places, 502 transitions, 6330 flow. Second operand 13 states and 331 transitions. [2024-06-28 01:25:56,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 592 transitions, 8002 flow [2024-06-28 01:25:57,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 592 transitions, 7736 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:57,526 INFO L231 Difference]: Finished difference. Result has 305 places, 502 transitions, 6255 flow [2024-06-28 01:25:57,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6064, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6255, PETRI_PLACES=305, PETRI_TRANSITIONS=502} [2024-06-28 01:25:57,526 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 250 predicate places. [2024-06-28 01:25:57,527 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 502 transitions, 6255 flow [2024-06-28 01:25:57,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:57,527 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 01:25:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:25:57,527 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:57,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1084226587, now seen corresponding path program 5 times [2024-06-28 01:25:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996267206] [2024-06-28 01:25:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996267206] [2024-06-28 01:25:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996267206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857672149] [2024-06-28 01:25:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:58,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:25:58,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 502 transitions, 6255 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:25:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:02,685 INFO L124 PetriNetUnfolderBase]: 10352/17586 cut-off events. [2024-06-28 01:26:02,686 INFO L125 PetriNetUnfolderBase]: For 908843/908845 co-relation queries the response was YES. [2024-06-28 01:26:02,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118709 conditions, 17586 events. 10352/17586 cut-off events. For 908843/908845 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 136015 event pairs, 2394 based on Foata normal form. 18/17104 useless extension candidates. Maximal degree in co-relation 118574. Up to 10036 conditions per place. [2024-06-28 01:26:03,067 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 432 selfloop transitions, 175 changer transitions 0/617 dead transitions. [2024-06-28 01:26:03,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 617 transitions, 8844 flow [2024-06-28 01:26:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-06-28 01:26:03,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425170068027211 [2024-06-28 01:26:03,069 INFO L175 Difference]: Start difference. First operand has 305 places, 502 transitions, 6255 flow. Second operand 12 states and 319 transitions. [2024-06-28 01:26:03,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 617 transitions, 8844 flow [2024-06-28 01:26:04,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 617 transitions, 8640 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 01:26:04,436 INFO L231 Difference]: Finished difference. Result has 306 places, 513 transitions, 6827 flow [2024-06-28 01:26:04,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6055, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6827, PETRI_PLACES=306, PETRI_TRANSITIONS=513} [2024-06-28 01:26:04,436 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 251 predicate places. [2024-06-28 01:26:04,436 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 513 transitions, 6827 flow [2024-06-28 01:26:04,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:04,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:04,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:04,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:26:04,437 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:04,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:04,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1775277653, now seen corresponding path program 6 times [2024-06-28 01:26:04,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:04,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860564012] [2024-06-28 01:26:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:04,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:05,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860564012] [2024-06-28 01:26:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860564012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666920288] [2024-06-28 01:26:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:05,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:05,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 513 transitions, 6827 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:05,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:10,589 INFO L124 PetriNetUnfolderBase]: 12246/20639 cut-off events. [2024-06-28 01:26:10,590 INFO L125 PetriNetUnfolderBase]: For 1217891/1217893 co-relation queries the response was YES. [2024-06-28 01:26:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150009 conditions, 20639 events. 12246/20639 cut-off events. For 1217891/1217893 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 163040 event pairs, 4049 based on Foata normal form. 26/20145 useless extension candidates. Maximal degree in co-relation 149872. Up to 14517 conditions per place. [2024-06-28 01:26:10,921 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 489 selfloop transitions, 133 changer transitions 0/632 dead transitions. [2024-06-28 01:26:10,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 632 transitions, 9571 flow [2024-06-28 01:26:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-06-28 01:26:10,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532312925170068 [2024-06-28 01:26:10,923 INFO L175 Difference]: Start difference. First operand has 306 places, 513 transitions, 6827 flow. Second operand 12 states and 313 transitions. [2024-06-28 01:26:10,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 632 transitions, 9571 flow [2024-06-28 01:26:13,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 632 transitions, 9246 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:13,084 INFO L231 Difference]: Finished difference. Result has 313 places, 538 transitions, 7660 flow [2024-06-28 01:26:13,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6633, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7660, PETRI_PLACES=313, PETRI_TRANSITIONS=538} [2024-06-28 01:26:13,085 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 258 predicate places. [2024-06-28 01:26:13,085 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 538 transitions, 7660 flow [2024-06-28 01:26:13,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:13,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:13,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:26:13,085 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:13,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1893365333, now seen corresponding path program 7 times [2024-06-28 01:26:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844794551] [2024-06-28 01:26:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:14,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:14,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844794551] [2024-06-28 01:26:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844794551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:14,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:14,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609872047] [2024-06-28 01:26:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:14,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:14,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:14,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:14,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:14,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 538 transitions, 7660 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:14,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:14,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:14,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:19,521 INFO L124 PetriNetUnfolderBase]: 13138/22114 cut-off events. [2024-06-28 01:26:19,522 INFO L125 PetriNetUnfolderBase]: For 1427689/1427691 co-relation queries the response was YES. [2024-06-28 01:26:19,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166868 conditions, 22114 events. 13138/22114 cut-off events. For 1427689/1427691 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 176210 event pairs, 4698 based on Foata normal form. 34/21617 useless extension candidates. Maximal degree in co-relation 166727. Up to 17119 conditions per place. [2024-06-28 01:26:19,881 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 523 selfloop transitions, 95 changer transitions 0/628 dead transitions. [2024-06-28 01:26:19,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 628 transitions, 10071 flow [2024-06-28 01:26:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-28 01:26:19,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287569573283859 [2024-06-28 01:26:19,882 INFO L175 Difference]: Start difference. First operand has 313 places, 538 transitions, 7660 flow. Second operand 11 states and 285 transitions. [2024-06-28 01:26:19,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 628 transitions, 10071 flow [2024-06-28 01:26:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 628 transitions, 9898 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:22,501 INFO L231 Difference]: Finished difference. Result has 317 places, 546 transitions, 8185 flow [2024-06-28 01:26:22,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7487, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8185, PETRI_PLACES=317, PETRI_TRANSITIONS=546} [2024-06-28 01:26:22,502 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 262 predicate places. [2024-06-28 01:26:22,502 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 546 transitions, 8185 flow [2024-06-28 01:26:22,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:22,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:22,503 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 01:26:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:26:22,504 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:22,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2074119895, now seen corresponding path program 8 times [2024-06-28 01:26:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:22,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379645298] [2024-06-28 01:26:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379645298] [2024-06-28 01:26:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379645298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:23,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509599030] [2024-06-28 01:26:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:23,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:23,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 546 transitions, 8185 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:23,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:23,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:23,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:29,048 INFO L124 PetriNetUnfolderBase]: 13056/21980 cut-off events. [2024-06-28 01:26:29,048 INFO L125 PetriNetUnfolderBase]: For 1360782/1360784 co-relation queries the response was YES. [2024-06-28 01:26:29,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162578 conditions, 21980 events. 13056/21980 cut-off events. For 1360782/1360784 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 175145 event pairs, 4925 based on Foata normal form. 42/21496 useless extension candidates. Maximal degree in co-relation 162435. Up to 17926 conditions per place. [2024-06-28 01:26:29,581 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 528 selfloop transitions, 80 changer transitions 0/618 dead transitions. [2024-06-28 01:26:29,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 618 transitions, 9786 flow [2024-06-28 01:26:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-06-28 01:26:29,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176252319109462 [2024-06-28 01:26:29,582 INFO L175 Difference]: Start difference. First operand has 317 places, 546 transitions, 8185 flow. Second operand 11 states and 279 transitions. [2024-06-28 01:26:29,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 618 transitions, 9786 flow [2024-06-28 01:26:32,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 618 transitions, 9402 flow, removed 144 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:32,088 INFO L231 Difference]: Finished difference. Result has 321 places, 546 transitions, 7977 flow [2024-06-28 01:26:32,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7801, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7977, PETRI_PLACES=321, PETRI_TRANSITIONS=546} [2024-06-28 01:26:32,088 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 266 predicate places. [2024-06-28 01:26:32,088 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 546 transitions, 7977 flow [2024-06-28 01:26:32,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:32,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:32,089 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 01:26:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:26:32,089 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:32,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash 339153383, now seen corresponding path program 9 times [2024-06-28 01:26:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395745602] [2024-06-28 01:26:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:33,028 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 01:26:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395745602] [2024-06-28 01:26:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395745602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346562543] [2024-06-28 01:26:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:33,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:26:33,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 546 transitions, 7977 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:33,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:33,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:26:33,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand