./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.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/mix004.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:53:10,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:53:10,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:53:10,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:53:10,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:53:10,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:53:10,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:53:10,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:53:10,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:53:10,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:53:10,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:53:10,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:53:10,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:53:10,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:53:10,862 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:53:10,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:53:10,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:53:10,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:53:10,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:53:10,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:53:10,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:53:10,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:53:10,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:53:10,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:53:10,865 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:53:10,865 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:53:10,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:53:10,866 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:53:10,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:53:10,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:53:10,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:53:10,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:53:10,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:53:10,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:53:10,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:53:10,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:53:10,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:53:10,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:53:10,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:53:10,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:53:10,869 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:53:10,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:53:10,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:53:10,870 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:53:11,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:53:11,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:53:11,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:53:11,093 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:53:11,094 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:53:11,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix004.opt.yml/witness.yml [2024-06-28 02:53:11,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:53:11,286 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:53:11,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-28 02:53:12,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:53:12,608 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:53:12,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-28 02:53:12,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50666769e/1e20fcf50eb74de7af4e8001682dab2f/FLAG799983bbf [2024-06-28 02:53:12,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50666769e/1e20fcf50eb74de7af4e8001682dab2f [2024-06-28 02:53:12,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:53:12,643 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:53:12,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:53:12,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:53:12,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:53:12,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:53:11" (1/2) ... [2024-06-28 02:53:12,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d6bb6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:53:12, skipping insertion in model container [2024-06-28 02:53:12,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:53:11" (1/2) ... [2024-06-28 02:53:12,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21520330 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:53:12, skipping insertion in model container [2024-06-28 02:53:12,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:53:12" (2/2) ... [2024-06-28 02:53:12,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d6bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:12, skipping insertion in model container [2024-06-28 02:53:12,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:53:12" (2/2) ... [2024-06-28 02:53:12,653 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:53:12,792 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:53:12,793 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_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$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 02:53:12,793 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ((((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 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$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 02:53:12,794 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_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$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 02:53:12,794 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 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$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 02:53:12,794 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:53:12,795 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-28 02:53:12,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:53:13,121 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:53:13,131 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:53:13,271 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:53:13,303 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:53:13,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13 WrapperNode [2024-06-28 02:53:13,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:53:13,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:53:13,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:53:13,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:53:13,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,361 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 163 [2024-06-28 02:53:13,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:53:13,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:53:13,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:53:13,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:53:13,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,403 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 02:53:13,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:53:13,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:53:13,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:53:13,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:53:13,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (1/1) ... [2024-06-28 02:53:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:53:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:53:13,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:53:13,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:53:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:53:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:53:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:53:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:53:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:53:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:53:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:53:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:53:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 02:53:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 02:53:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:53:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:53:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:53:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:53:13,517 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:53:13,633 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:53:13,635 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:53:13,941 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:53:13,941 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:53:14,105 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:53:14,106 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:53:14,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:53:14 BoogieIcfgContainer [2024-06-28 02:53:14,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:53:14,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:53:14,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:53:14,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:53:14,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:53:11" (1/4) ... [2024-06-28 02:53:14,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12071d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:53:14, skipping insertion in model container [2024-06-28 02:53:14,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:53:12" (2/4) ... [2024-06-28 02:53:14,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:53:14, skipping insertion in model container [2024-06-28 02:53:14,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:53:13" (3/4) ... [2024-06-28 02:53:14,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:53:14, skipping insertion in model container [2024-06-28 02:53:14,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:53:14" (4/4) ... [2024-06-28 02:53:14,114 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-06-28 02:53:14,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:53:14,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:53:14,130 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:53:14,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:53:14,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 02:53:14,235 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 02:53:14,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:53:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:53:14,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 02:53:14,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 02:53:14,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:53:14,261 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;@3928152b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:53:14,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 02:53:14,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:53:14,265 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:53:14,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:53:14,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:14,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:53:14,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash 417595377, now seen corresponding path program 1 times [2024-06-28 02:53:14,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:14,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812399585] [2024-06-28 02:53:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:14,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812399585] [2024-06-28 02:53:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812399585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:15,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:15,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:53:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990426209] [2024-06-28 02:53:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:53:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:53:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:53:15,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-28 02:53:15,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:15,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:15,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-28 02:53:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:16,437 INFO L124 PetriNetUnfolderBase]: 4867/7027 cut-off events. [2024-06-28 02:53:16,437 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-28 02:53:16,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13939 conditions, 7027 events. 4867/7027 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40787 event pairs, 3534 based on Foata normal form. 1/6810 useless extension candidates. Maximal degree in co-relation 13926. Up to 6693 conditions per place. [2024-06-28 02:53:16,471 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 40 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 02:53:16,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 225 flow [2024-06-28 02:53:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:53:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:53:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-28 02:53:16,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:53:16,481 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 106 transitions. [2024-06-28 02:53:16,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 225 flow [2024-06-28 02:53:16,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:16,485 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 02:53:16,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 02:53:16,488 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 02:53:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 02:53:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:16,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:16,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:53:16,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1877255952, now seen corresponding path program 1 times [2024-06-28 02:53:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99808996] [2024-06-28 02:53:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:17,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99808996] [2024-06-28 02:53:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99808996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:17,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:17,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:53:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706909892] [2024-06-28 02:53:17,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:53:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:53:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:53:17,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-28 02:53:17,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:17,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:17,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-28 02:53:17,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:17,960 INFO L124 PetriNetUnfolderBase]: 5569/7857 cut-off events. [2024-06-28 02:53:17,961 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-06-28 02:53:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18044 conditions, 7857 events. 5569/7857 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 44449 event pairs, 3437 based on Foata normal form. 4/7815 useless extension candidates. Maximal degree in co-relation 18032. Up to 7610 conditions per place. [2024-06-28 02:53:17,997 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 51 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 02:53:17,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 319 flow [2024-06-28 02:53:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:53:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:53:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-28 02:53:17,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-28 02:53:17,999 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 136 transitions. [2024-06-28 02:53:17,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 319 flow [2024-06-28 02:53:18,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:53:18,008 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 02:53:18,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 02:53:18,009 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 02:53:18,009 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 02:53:18,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:18,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:18,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:18,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:53:18,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:18,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 564740903, now seen corresponding path program 1 times [2024-06-28 02:53:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778761206] [2024-06-28 02:53:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:18,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778761206] [2024-06-28 02:53:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778761206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:18,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:53:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105809084] [2024-06-28 02:53:18,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:18,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:53:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:53:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:53:18,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 02:53:18,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:18,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:18,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 02:53:18,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:19,957 INFO L124 PetriNetUnfolderBase]: 7070/9909 cut-off events. [2024-06-28 02:53:19,957 INFO L125 PetriNetUnfolderBase]: For 6002/6002 co-relation queries the response was YES. [2024-06-28 02:53:19,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 9909 events. 7070/9909 cut-off events. For 6002/6002 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 56128 event pairs, 3323 based on Foata normal form. 8/9858 useless extension candidates. Maximal degree in co-relation 25329. Up to 9556 conditions per place. [2024-06-28 02:53:20,004 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 69 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 02:53:20,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 484 flow [2024-06-28 02:53:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 02:53:20,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60062893081761 [2024-06-28 02:53:20,007 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 191 transitions. [2024-06-28 02:53:20,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 484 flow [2024-06-28 02:53:20,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 456 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:53:20,011 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-28 02:53:20,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-28 02:53:20,011 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 02:53:20,012 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-28 02:53:20,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:20,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:20,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:53:20,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:20,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -671642190, now seen corresponding path program 1 times [2024-06-28 02:53:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699833716] [2024-06-28 02:53:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:20,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699833716] [2024-06-28 02:53:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699833716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:20,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:53:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829770261] [2024-06-28 02:53:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:53:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:53:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:53:20,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 02:53:20,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:20,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:20,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 02:53:20,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:21,715 INFO L124 PetriNetUnfolderBase]: 6156/8926 cut-off events. [2024-06-28 02:53:21,716 INFO L125 PetriNetUnfolderBase]: For 9719/9719 co-relation queries the response was YES. [2024-06-28 02:53:21,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24968 conditions, 8926 events. 6156/8926 cut-off events. For 9719/9719 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 52173 event pairs, 3157 based on Foata normal form. 3/8827 useless extension candidates. Maximal degree in co-relation 24951. Up to 8408 conditions per place. [2024-06-28 02:53:21,757 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 58 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 02:53:21,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 445 flow [2024-06-28 02:53:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:53:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:53:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-28 02:53:21,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-28 02:53:21,758 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 140 transitions. [2024-06-28 02:53:21,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 445 flow [2024-06-28 02:53:21,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 407 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:21,764 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 266 flow [2024-06-28 02:53:21,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-28 02:53:21,765 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 02:53:21,765 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 266 flow [2024-06-28 02:53:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:21,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:21,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:21,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:53:21,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:21,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1081318993, now seen corresponding path program 1 times [2024-06-28 02:53:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:21,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151149945] [2024-06-28 02:53:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:21,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151149945] [2024-06-28 02:53:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151149945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:22,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:22,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:53:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275119064] [2024-06-28 02:53:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:53:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:53:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:53:22,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 02:53:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:22,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:24,075 INFO L124 PetriNetUnfolderBase]: 7083/9987 cut-off events. [2024-06-28 02:53:24,075 INFO L125 PetriNetUnfolderBase]: For 17651/17673 co-relation queries the response was YES. [2024-06-28 02:53:24,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30795 conditions, 9987 events. 7083/9987 cut-off events. For 17651/17673 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 56697 event pairs, 3545 based on Foata normal form. 5/9968 useless extension candidates. Maximal degree in co-relation 30776. Up to 9589 conditions per place. [2024-06-28 02:53:24,126 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 69 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 02:53:24,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 602 flow [2024-06-28 02:53:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-28 02:53:24,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2024-06-28 02:53:24,128 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 266 flow. Second operand 6 states and 170 transitions. [2024-06-28 02:53:24,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 602 flow [2024-06-28 02:53:24,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 573 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:24,132 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 354 flow [2024-06-28 02:53:24,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-28 02:53:24,133 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-06-28 02:53:24,133 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 354 flow [2024-06-28 02:53:24,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 02:53:24,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:24,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:24,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:53:24,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:24,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1107329233, now seen corresponding path program 2 times [2024-06-28 02:53:24,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:24,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842875789] [2024-06-28 02:53:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842875789] [2024-06-28 02:53:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842875789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:53:25,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191200030] [2024-06-28 02:53:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:25,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:53:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:53:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:53:25,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:25,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 02:53:25,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:25,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:25,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:26,278 INFO L124 PetriNetUnfolderBase]: 7074/9990 cut-off events. [2024-06-28 02:53:26,278 INFO L125 PetriNetUnfolderBase]: For 25783/25826 co-relation queries the response was YES. [2024-06-28 02:53:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33469 conditions, 9990 events. 7074/9990 cut-off events. For 25783/25826 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 56906 event pairs, 3548 based on Foata normal form. 25/9992 useless extension candidates. Maximal degree in co-relation 33449. Up to 9580 conditions per place. [2024-06-28 02:53:26,339 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 63 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2024-06-28 02:53:26,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 584 flow [2024-06-28 02:53:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-28 02:53:26,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-28 02:53:26,340 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 354 flow. Second operand 6 states and 164 transitions. [2024-06-28 02:53:26,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 584 flow [2024-06-28 02:53:26,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 538 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 02:53:26,353 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 361 flow [2024-06-28 02:53:26,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-28 02:53:26,354 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 02:53:26,354 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 361 flow [2024-06-28 02:53:26,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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 02:53:26,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:26,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:53:26,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:26,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -357307681, now seen corresponding path program 1 times [2024-06-28 02:53:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656289065] [2024-06-28 02:53:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656289065] [2024-06-28 02:53:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656289065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210397520] [2024-06-28 02:53:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:27,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:27,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:27,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:27,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:27,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:28,604 INFO L124 PetriNetUnfolderBase]: 7165/10144 cut-off events. [2024-06-28 02:53:28,604 INFO L125 PetriNetUnfolderBase]: For 29531/29569 co-relation queries the response was YES. [2024-06-28 02:53:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34359 conditions, 10144 events. 7165/10144 cut-off events. For 29531/29569 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 57834 event pairs, 3538 based on Foata normal form. 7/10131 useless extension candidates. Maximal degree in co-relation 34337. Up to 9682 conditions per place. [2024-06-28 02:53:28,657 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 87 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-28 02:53:28,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 820 flow [2024-06-28 02:53:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 02:53:28,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-28 02:53:28,658 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 361 flow. Second operand 8 states and 221 transitions. [2024-06-28 02:53:28,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 820 flow [2024-06-28 02:53:28,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 128 transitions, 746 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:28,671 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 513 flow [2024-06-28 02:53:28,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-06-28 02:53:28,671 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-06-28 02:53:28,672 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 513 flow [2024-06-28 02:53:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:28,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:28,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:53:28,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:28,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -838852777, now seen corresponding path program 2 times [2024-06-28 02:53:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633893543] [2024-06-28 02:53:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:29,599 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 02:53:29,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633893543] [2024-06-28 02:53:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633893543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:29,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036447687] [2024-06-28 02:53:29,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:29,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:29,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:29,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:29,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:29,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:30,950 INFO L124 PetriNetUnfolderBase]: 7187/10160 cut-off events. [2024-06-28 02:53:30,951 INFO L125 PetriNetUnfolderBase]: For 40060/40124 co-relation queries the response was YES. [2024-06-28 02:53:30,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37368 conditions, 10160 events. 7187/10160 cut-off events. For 40060/40124 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 57848 event pairs, 3446 based on Foata normal form. 11/10153 useless extension candidates. Maximal degree in co-relation 37344. Up to 9689 conditions per place. [2024-06-28 02:53:31,043 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 87 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-06-28 02:53:31,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 925 flow [2024-06-28 02:53:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 02:53:31,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522911051212938 [2024-06-28 02:53:31,047 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 513 flow. Second operand 7 states and 194 transitions. [2024-06-28 02:53:31,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 925 flow [2024-06-28 02:53:31,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 130 transitions, 867 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:31,070 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 590 flow [2024-06-28 02:53:31,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-06-28 02:53:31,073 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-06-28 02:53:31,073 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 590 flow [2024-06-28 02:53:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:31,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:31,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:31,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:53:31,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:31,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:31,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1184405505, now seen corresponding path program 3 times [2024-06-28 02:53:31,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830289728] [2024-06-28 02:53:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:32,014 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 02:53:32,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:32,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830289728] [2024-06-28 02:53:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830289728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:32,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:32,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602322269] [2024-06-28 02:53:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:32,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:32,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:32,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:32,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:32,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:32,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:33,473 INFO L124 PetriNetUnfolderBase]: 7209/10195 cut-off events. [2024-06-28 02:53:33,474 INFO L125 PetriNetUnfolderBase]: For 52609/52667 co-relation queries the response was YES. [2024-06-28 02:53:33,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40251 conditions, 10195 events. 7209/10195 cut-off events. For 52609/52667 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 57975 event pairs, 3397 based on Foata normal form. 21/10194 useless extension candidates. Maximal degree in co-relation 40226. Up to 9633 conditions per place. [2024-06-28 02:53:33,524 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 77 selfloop transitions, 50 changer transitions 0/136 dead transitions. [2024-06-28 02:53:33,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 1102 flow [2024-06-28 02:53:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 02:53:33,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336927223719676 [2024-06-28 02:53:33,525 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 590 flow. Second operand 7 states and 198 transitions. [2024-06-28 02:53:33,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 1102 flow [2024-06-28 02:53:33,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 983 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:33,545 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 696 flow [2024-06-28 02:53:33,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=696, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-06-28 02:53:33,546 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-28 02:53:33,546 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 696 flow [2024-06-28 02:53:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:33,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:33,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:53:33,547 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:33,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 443683359, now seen corresponding path program 4 times [2024-06-28 02:53:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413772236] [2024-06-28 02:53:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:34,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413772236] [2024-06-28 02:53:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413772236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:34,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056914332] [2024-06-28 02:53:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:34,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 696 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:36,097 INFO L124 PetriNetUnfolderBase]: 7200/10196 cut-off events. [2024-06-28 02:53:36,097 INFO L125 PetriNetUnfolderBase]: For 53390/53451 co-relation queries the response was YES. [2024-06-28 02:53:36,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40196 conditions, 10196 events. 7200/10196 cut-off events. For 53390/53451 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 57950 event pairs, 3404 based on Foata normal form. 19/10183 useless extension candidates. Maximal degree in co-relation 40170. Up to 9624 conditions per place. [2024-06-28 02:53:36,170 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 72 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-06-28 02:53:36,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 1038 flow [2024-06-28 02:53:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 02:53:36,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175202156334232 [2024-06-28 02:53:36,173 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 696 flow. Second operand 7 states and 192 transitions. [2024-06-28 02:53:36,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 1038 flow [2024-06-28 02:53:36,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 955 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:36,229 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 724 flow [2024-06-28 02:53:36,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-28 02:53:36,230 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-28 02:53:36,230 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 724 flow [2024-06-28 02:53:36,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:36,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:36,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:36,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:53:36,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:36,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1361783289, now seen corresponding path program 1 times [2024-06-28 02:53:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623820510] [2024-06-28 02:53:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:37,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623820510] [2024-06-28 02:53:37,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623820510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:37,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:37,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090376635] [2024-06-28 02:53:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:37,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:37,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:37,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:37,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:37,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:37,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:37,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:37,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:38,935 INFO L124 PetriNetUnfolderBase]: 8032/11580 cut-off events. [2024-06-28 02:53:38,935 INFO L125 PetriNetUnfolderBase]: For 63107/63109 co-relation queries the response was YES. [2024-06-28 02:53:38,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45057 conditions, 11580 events. 8032/11580 cut-off events. For 63107/63109 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 66880 event pairs, 3728 based on Foata normal form. 6/11469 useless extension candidates. Maximal degree in co-relation 45029. Up to 10879 conditions per place. [2024-06-28 02:53:39,026 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 113 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-28 02:53:39,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1149 flow [2024-06-28 02:53:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 02:53:39,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-28 02:53:39,028 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 724 flow. Second operand 7 states and 188 transitions. [2024-06-28 02:53:39,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1149 flow [2024-06-28 02:53:39,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1008 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:39,069 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 705 flow [2024-06-28 02:53:39,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-28 02:53:39,069 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 02:53:39,070 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 705 flow [2024-06-28 02:53:39,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:39,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:39,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:39,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:53:39,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:39,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:39,071 INFO L85 PathProgramCache]: Analyzing trace with hash 325714881, now seen corresponding path program 1 times [2024-06-28 02:53:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893353645] [2024-06-28 02:53:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:39,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:39,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893353645] [2024-06-28 02:53:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893353645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:39,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:39,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:53:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497263616] [2024-06-28 02:53:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:39,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:53:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:53:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:53:39,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:39,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 705 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:39,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:39,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:39,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:41,139 INFO L124 PetriNetUnfolderBase]: 9059/12987 cut-off events. [2024-06-28 02:53:41,139 INFO L125 PetriNetUnfolderBase]: For 86452/86472 co-relation queries the response was YES. [2024-06-28 02:53:41,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53730 conditions, 12987 events. 9059/12987 cut-off events. For 86452/86472 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 75599 event pairs, 4701 based on Foata normal form. 20/12839 useless extension candidates. Maximal degree in co-relation 53700. Up to 12368 conditions per place. [2024-06-28 02:53:41,232 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 102 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2024-06-28 02:53:41,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 125 transitions, 1009 flow [2024-06-28 02:53:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:53:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:53:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 02:53:41,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981132075471698 [2024-06-28 02:53:41,233 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 705 flow. Second operand 5 states and 132 transitions. [2024-06-28 02:53:41,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 125 transitions, 1009 flow [2024-06-28 02:53:41,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 949 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:41,268 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 718 flow [2024-06-28 02:53:41,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=718, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2024-06-28 02:53:41,269 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-06-28 02:53:41,269 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 718 flow [2024-06-28 02:53:41,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:41,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:41,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:41,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:53:41,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:41,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1507228129, now seen corresponding path program 1 times [2024-06-28 02:53:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:41,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472554915] [2024-06-28 02:53:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472554915] [2024-06-28 02:53:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472554915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:41,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:41,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:53:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486231203] [2024-06-28 02:53:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:53:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:53:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:53:42,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:42,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 718 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 02:53:42,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:42,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:42,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:43,416 INFO L124 PetriNetUnfolderBase]: 9082/13210 cut-off events. [2024-06-28 02:53:43,417 INFO L125 PetriNetUnfolderBase]: For 101568/101588 co-relation queries the response was YES. [2024-06-28 02:53:43,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56956 conditions, 13210 events. 9082/13210 cut-off events. For 101568/101588 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 78443 event pairs, 4665 based on Foata normal form. 22/13201 useless extension candidates. Maximal degree in co-relation 56925. Up to 12332 conditions per place. [2024-06-28 02:53:43,507 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 107 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2024-06-28 02:53:43,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 1060 flow [2024-06-28 02:53:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 02:53:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-28 02:53:43,510 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 718 flow. Second operand 6 states and 156 transitions. [2024-06-28 02:53:43,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 1060 flow [2024-06-28 02:53:43,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 1017 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:53:43,574 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 762 flow [2024-06-28 02:53:43,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-28 02:53:43,576 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-06-28 02:53:43,576 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 762 flow [2024-06-28 02:53:43,576 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 02:53:43,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:43,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:53:43,576 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:43,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1202701150, now seen corresponding path program 1 times [2024-06-28 02:53:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529356275] [2024-06-28 02:53:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:44,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:44,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529356275] [2024-06-28 02:53:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529356275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:44,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:44,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104512379] [2024-06-28 02:53:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:44,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:44,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:44,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:44,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:44,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:44,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:46,766 INFO L124 PetriNetUnfolderBase]: 10479/14763 cut-off events. [2024-06-28 02:53:46,767 INFO L125 PetriNetUnfolderBase]: For 153506/153717 co-relation queries the response was YES. [2024-06-28 02:53:46,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71029 conditions, 14763 events. 10479/14763 cut-off events. For 153506/153717 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 86207 event pairs, 3699 based on Foata normal form. 47/14740 useless extension candidates. Maximal degree in co-relation 70997. Up to 13675 conditions per place. [2024-06-28 02:53:46,891 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 129 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-28 02:53:46,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 181 transitions, 1464 flow [2024-06-28 02:53:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:53:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:53:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-28 02:53:46,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303983228511531 [2024-06-28 02:53:46,893 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 762 flow. Second operand 9 states and 253 transitions. [2024-06-28 02:53:46,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 181 transitions, 1464 flow [2024-06-28 02:53:46,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 181 transitions, 1407 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:46,945 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 880 flow [2024-06-28 02:53:46,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-28 02:53:46,946 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-28 02:53:46,946 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 880 flow [2024-06-28 02:53:46,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:46,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:46,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:46,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:53:46,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:46,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1205558110, now seen corresponding path program 2 times [2024-06-28 02:53:46,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:46,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854845449] [2024-06-28 02:53:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:47,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854845449] [2024-06-28 02:53:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854845449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:47,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085934723] [2024-06-28 02:53:47,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:47,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:48,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:48,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:48,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:48,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:48,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:49,915 INFO L124 PetriNetUnfolderBase]: 10433/14725 cut-off events. [2024-06-28 02:53:49,916 INFO L125 PetriNetUnfolderBase]: For 173884/174095 co-relation queries the response was YES. [2024-06-28 02:53:49,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72749 conditions, 14725 events. 10433/14725 cut-off events. For 173884/174095 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 86221 event pairs, 4271 based on Foata normal form. 53/14714 useless extension candidates. Maximal degree in co-relation 72716. Up to 13833 conditions per place. [2024-06-28 02:53:50,044 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 121 selfloop transitions, 36 changer transitions 0/168 dead transitions. [2024-06-28 02:53:50,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 1366 flow [2024-06-28 02:53:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 02:53:50,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2024-06-28 02:53:50,046 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 880 flow. Second operand 8 states and 222 transitions. [2024-06-28 02:53:50,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 1366 flow [2024-06-28 02:53:50,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 168 transitions, 1293 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:50,132 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 891 flow [2024-06-28 02:53:50,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2024-06-28 02:53:50,132 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-28 02:53:50,133 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 891 flow [2024-06-28 02:53:50,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:50,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:50,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:53:50,133 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:50,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash 47404544, now seen corresponding path program 3 times [2024-06-28 02:53:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008401661] [2024-06-28 02:53:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008401661] [2024-06-28 02:53:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008401661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:51,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600638994] [2024-06-28 02:53:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:51,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:51,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:51,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:53:51,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 891 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:53:51,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:53,251 INFO L124 PetriNetUnfolderBase]: 10541/14906 cut-off events. [2024-06-28 02:53:53,252 INFO L125 PetriNetUnfolderBase]: For 191148/191353 co-relation queries the response was YES. [2024-06-28 02:53:53,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74836 conditions, 14906 events. 10541/14906 cut-off events. For 191148/191353 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 87746 event pairs, 4321 based on Foata normal form. 76/14920 useless extension candidates. Maximal degree in co-relation 74801. Up to 13908 conditions per place. [2024-06-28 02:53:53,364 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 99 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-28 02:53:53,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1391 flow [2024-06-28 02:53:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 02:53:53,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259433962264151 [2024-06-28 02:53:53,375 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 891 flow. Second operand 8 states and 223 transitions. [2024-06-28 02:53:53,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1391 flow [2024-06-28 02:53:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 165 transitions, 1309 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:53,479 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 977 flow [2024-06-28 02:53:53,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=977, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-28 02:53:53,480 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 02:53:53,480 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 977 flow [2024-06-28 02:53:53,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:53,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:53,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:53,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:53:53,494 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:53,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1321033978, now seen corresponding path program 1 times [2024-06-28 02:53:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372500846] [2024-06-28 02:53:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372500846] [2024-06-28 02:53:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372500846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:54,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:54,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222050216] [2024-06-28 02:53:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:54,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:54,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:54,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 977 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 02:53:54,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:54,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:56,485 INFO L124 PetriNetUnfolderBase]: 10984/15428 cut-off events. [2024-06-28 02:53:56,485 INFO L125 PetriNetUnfolderBase]: For 216343/216354 co-relation queries the response was YES. [2024-06-28 02:53:56,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77894 conditions, 15428 events. 10984/15428 cut-off events. For 216343/216354 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 87814 event pairs, 4681 based on Foata normal form. 14/15372 useless extension candidates. Maximal degree in co-relation 77858. Up to 14680 conditions per place. [2024-06-28 02:53:56,595 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 129 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 02:53:56,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 173 transitions, 1536 flow [2024-06-28 02:53:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 02:53:56,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-28 02:53:56,598 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 977 flow. Second operand 8 states and 214 transitions. [2024-06-28 02:53:56,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 173 transitions, 1536 flow [2024-06-28 02:53:56,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 173 transitions, 1404 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:56,728 INFO L231 Difference]: Finished difference. Result has 103 places, 128 transitions, 1020 flow [2024-06-28 02:53:56,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1020, PETRI_PLACES=103, PETRI_TRANSITIONS=128} [2024-06-28 02:53:56,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-06-28 02:53:56,729 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 128 transitions, 1020 flow [2024-06-28 02:53:56,729 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 02:53:56,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:56,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:53:56,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:56,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash -532008544, now seen corresponding path program 1 times [2024-06-28 02:53:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699339957] [2024-06-28 02:53:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:57,511 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 02:53:57,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699339957] [2024-06-28 02:53:57,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699339957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:57,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:57,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:53:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556183860] [2024-06-28 02:53:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:57,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:53:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:53:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:53:57,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:53:57,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 128 transitions, 1020 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:57,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:57,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:53:57,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:59,461 INFO L124 PetriNetUnfolderBase]: 10937/15393 cut-off events. [2024-06-28 02:53:59,462 INFO L125 PetriNetUnfolderBase]: For 233562/233585 co-relation queries the response was YES. [2024-06-28 02:53:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79870 conditions, 15393 events. 10937/15393 cut-off events. For 233562/233585 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 88053 event pairs, 5117 based on Foata normal form. 23/15390 useless extension candidates. Maximal degree in co-relation 79832. Up to 14751 conditions per place. [2024-06-28 02:53:59,584 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 112 selfloop transitions, 35 changer transitions 0/161 dead transitions. [2024-06-28 02:53:59,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 161 transitions, 1558 flow [2024-06-28 02:53:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:53:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:53:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 02:53:59,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031446540880503 [2024-06-28 02:53:59,586 INFO L175 Difference]: Start difference. First operand has 103 places, 128 transitions, 1020 flow. Second operand 6 states and 160 transitions. [2024-06-28 02:53:59,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 161 transitions, 1558 flow [2024-06-28 02:53:59,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 161 transitions, 1446 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:59,688 INFO L231 Difference]: Finished difference. Result has 104 places, 136 transitions, 1103 flow [2024-06-28 02:53:59,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1103, PETRI_PLACES=104, PETRI_TRANSITIONS=136} [2024-06-28 02:53:59,689 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-28 02:53:59,689 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 136 transitions, 1103 flow [2024-06-28 02:53:59,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:59,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:59,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:59,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:53:59,690 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:53:59,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1527896576, now seen corresponding path program 4 times [2024-06-28 02:53:59,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:59,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741231252] [2024-06-28 02:53:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741231252] [2024-06-28 02:54:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741231252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:00,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:00,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976246528] [2024-06-28 02:54:00,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:00,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:00,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 02:54:00,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 136 transitions, 1103 flow. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:00,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:00,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 02:54:00,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:02,789 INFO L124 PetriNetUnfolderBase]: 10667/15156 cut-off events. [2024-06-28 02:54:02,790 INFO L125 PetriNetUnfolderBase]: For 276180/276347 co-relation queries the response was YES. [2024-06-28 02:54:02,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83879 conditions, 15156 events. 10667/15156 cut-off events. For 276180/276347 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 89535 event pairs, 4276 based on Foata normal form. 46/15101 useless extension candidates. Maximal degree in co-relation 83840. Up to 14041 conditions per place. [2024-06-28 02:54:02,912 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 109 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2024-06-28 02:54:02,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1633 flow [2024-06-28 02:54:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-28 02:54:02,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2024-06-28 02:54:02,915 INFO L175 Difference]: Start difference. First operand has 104 places, 136 transitions, 1103 flow. Second operand 8 states and 220 transitions. [2024-06-28 02:54:02,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1633 flow [2024-06-28 02:54:03,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 180 transitions, 1583 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 02:54:03,034 INFO L231 Difference]: Finished difference. Result has 110 places, 138 transitions, 1235 flow [2024-06-28 02:54:03,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=110, PETRI_TRANSITIONS=138} [2024-06-28 02:54:03,034 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-28 02:54:03,034 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 138 transitions, 1235 flow [2024-06-28 02:54:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:03,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:03,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:03,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:54:03,036 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:03,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1521455768, now seen corresponding path program 2 times [2024-06-28 02:54:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227126363] [2024-06-28 02:54:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227126363] [2024-06-28 02:54:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227126363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:04,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493426935] [2024-06-28 02:54:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:04,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:04,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 138 transitions, 1235 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 02:54:04,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:04,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:04,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:06,263 INFO L124 PetriNetUnfolderBase]: 11171/15729 cut-off events. [2024-06-28 02:54:06,263 INFO L125 PetriNetUnfolderBase]: For 304655/304676 co-relation queries the response was YES. [2024-06-28 02:54:06,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88114 conditions, 15729 events. 11171/15729 cut-off events. For 304655/304676 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 89946 event pairs, 4689 based on Foata normal form. 20/15675 useless extension candidates. Maximal degree in co-relation 88073. Up to 14918 conditions per place. [2024-06-28 02:54:06,401 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 137 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2024-06-28 02:54:06,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 1863 flow [2024-06-28 02:54:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:54:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-28 02:54:06,403 INFO L175 Difference]: Start difference. First operand has 110 places, 138 transitions, 1235 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:54:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 1863 flow [2024-06-28 02:54:06,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 1711 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:06,567 INFO L231 Difference]: Finished difference. Result has 113 places, 149 transitions, 1329 flow [2024-06-28 02:54:06,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1329, PETRI_PLACES=113, PETRI_TRANSITIONS=149} [2024-06-28 02:54:06,567 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-06-28 02:54:06,567 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 149 transitions, 1329 flow [2024-06-28 02:54:06,567 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 02:54:06,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:06,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:06,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:54:06,568 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:06,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1527711878, now seen corresponding path program 3 times [2024-06-28 02:54:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155903667] [2024-06-28 02:54:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:07,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:07,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155903667] [2024-06-28 02:54:07,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155903667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:07,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:07,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:07,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247686481] [2024-06-28 02:54:07,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:07,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:07,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:07,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 149 transitions, 1329 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 02:54:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:09,682 INFO L124 PetriNetUnfolderBase]: 11207/15781 cut-off events. [2024-06-28 02:54:09,682 INFO L125 PetriNetUnfolderBase]: For 336184/336205 co-relation queries the response was YES. [2024-06-28 02:54:09,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91508 conditions, 15781 events. 11207/15781 cut-off events. For 336184/336205 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 90167 event pairs, 4713 based on Foata normal form. 20/15727 useless extension candidates. Maximal degree in co-relation 91465. Up to 14970 conditions per place. [2024-06-28 02:54:09,841 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 141 selfloop transitions, 42 changer transitions 0/194 dead transitions. [2024-06-28 02:54:09,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 194 transitions, 1905 flow [2024-06-28 02:54:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 02:54:09,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-28 02:54:09,851 INFO L175 Difference]: Start difference. First operand has 113 places, 149 transitions, 1329 flow. Second operand 8 states and 211 transitions. [2024-06-28 02:54:09,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 194 transitions, 1905 flow [2024-06-28 02:54:10,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 194 transitions, 1795 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:54:10,048 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1389 flow [2024-06-28 02:54:10,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1389, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-06-28 02:54:10,049 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 02:54:10,049 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1389 flow [2024-06-28 02:54:10,049 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 02:54:10,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:10,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:54:10,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:10,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1291239848, now seen corresponding path program 4 times [2024-06-28 02:54:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668231278] [2024-06-28 02:54:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668231278] [2024-06-28 02:54:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668231278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:10,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:10,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:10,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629183406] [2024-06-28 02:54:10,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:10,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:10,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:10,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:10,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:11,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:11,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1389 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 02:54:11,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:11,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:11,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:12,929 INFO L124 PetriNetUnfolderBase]: 11192/15760 cut-off events. [2024-06-28 02:54:12,929 INFO L125 PetriNetUnfolderBase]: For 365556/365577 co-relation queries the response was YES. [2024-06-28 02:54:12,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92372 conditions, 15760 events. 11192/15760 cut-off events. For 365556/365577 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 90004 event pairs, 4405 based on Foata normal form. 20/15706 useless extension candidates. Maximal degree in co-relation 92328. Up to 14821 conditions per place. [2024-06-28 02:54:13,080 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 133 selfloop transitions, 54 changer transitions 0/198 dead transitions. [2024-06-28 02:54:13,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 198 transitions, 1981 flow [2024-06-28 02:54:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 02:54:13,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-28 02:54:13,081 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1389 flow. Second operand 8 states and 211 transitions. [2024-06-28 02:54:13,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 198 transitions, 1981 flow [2024-06-28 02:54:13,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 198 transitions, 1809 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:54:13,292 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 1417 flow [2024-06-28 02:54:13,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-06-28 02:54:13,293 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 02:54:13,293 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 1417 flow [2024-06-28 02:54:13,293 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 02:54:13,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:13,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:13,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:54:13,293 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:13,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash 338293826, now seen corresponding path program 2 times [2024-06-28 02:54:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:13,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760911667] [2024-06-28 02:54:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760911667] [2024-06-28 02:54:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760911667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:54:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630400785] [2024-06-28 02:54:14,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:54:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:54:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:54:14,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:14,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 1417 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:14,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:14,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:14,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:16,027 INFO L124 PetriNetUnfolderBase]: 11074/15608 cut-off events. [2024-06-28 02:54:16,028 INFO L125 PetriNetUnfolderBase]: For 383020/383035 co-relation queries the response was YES. [2024-06-28 02:54:16,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91799 conditions, 15608 events. 11074/15608 cut-off events. For 383020/383035 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 89570 event pairs, 5133 based on Foata normal form. 15/15575 useless extension candidates. Maximal degree in co-relation 91756. Up to 14942 conditions per place. [2024-06-28 02:54:16,179 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 119 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-06-28 02:54:16,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 173 transitions, 1781 flow [2024-06-28 02:54:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:54:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:54:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:54:16,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-28 02:54:16,181 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 1417 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:54:16,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 173 transitions, 1781 flow [2024-06-28 02:54:16,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 1579 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:16,380 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 1294 flow [2024-06-28 02:54:16,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-06-28 02:54:16,381 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-28 02:54:16,381 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 1294 flow [2024-06-28 02:54:16,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:16,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:16,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:54:16,382 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:16,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -526288672, now seen corresponding path program 1 times [2024-06-28 02:54:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705623029] [2024-06-28 02:54:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705623029] [2024-06-28 02:54:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705623029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:17,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:17,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:54:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921295310] [2024-06-28 02:54:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:54:17,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:54:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:54:17,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:17,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:17,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:17,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:17,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:18,854 INFO L124 PetriNetUnfolderBase]: 10333/14706 cut-off events. [2024-06-28 02:54:18,854 INFO L125 PetriNetUnfolderBase]: For 350893/350901 co-relation queries the response was YES. [2024-06-28 02:54:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86611 conditions, 14706 events. 10333/14706 cut-off events. For 350893/350901 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 84414 event pairs, 4392 based on Foata normal form. 6/14676 useless extension candidates. Maximal degree in co-relation 86567. Up to 14061 conditions per place. [2024-06-28 02:54:18,986 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 157 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2024-06-28 02:54:18,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 186 transitions, 1928 flow [2024-06-28 02:54:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:54:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:54:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:54:18,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-28 02:54:18,987 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 1294 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:54:18,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 186 transitions, 1928 flow [2024-06-28 02:54:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 1827 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:19,221 INFO L231 Difference]: Finished difference. Result has 119 places, 163 transitions, 1372 flow [2024-06-28 02:54:19,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1372, PETRI_PLACES=119, PETRI_TRANSITIONS=163} [2024-06-28 02:54:19,221 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 02:54:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 163 transitions, 1372 flow [2024-06-28 02:54:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:19,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:19,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:54:19,222 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:19,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 366899138, now seen corresponding path program 2 times [2024-06-28 02:54:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176755877] [2024-06-28 02:54:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:19,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176755877] [2024-06-28 02:54:19,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176755877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:19,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:19,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:54:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784229004] [2024-06-28 02:54:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:19,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:54:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:54:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:54:20,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:20,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 163 transitions, 1372 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:20,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:20,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:20,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:21,822 INFO L124 PetriNetUnfolderBase]: 10326/14730 cut-off events. [2024-06-28 02:54:21,822 INFO L125 PetriNetUnfolderBase]: For 380927/380935 co-relation queries the response was YES. [2024-06-28 02:54:21,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89632 conditions, 14730 events. 10326/14730 cut-off events. For 380927/380935 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 84769 event pairs, 4411 based on Foata normal form. 6/14699 useless extension candidates. Maximal degree in co-relation 89587. Up to 14054 conditions per place. [2024-06-28 02:54:21,980 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 152 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2024-06-28 02:54:21,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 181 transitions, 1774 flow [2024-06-28 02:54:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:54:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:54:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:54:21,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-28 02:54:21,981 INFO L175 Difference]: Start difference. First operand has 119 places, 163 transitions, 1372 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:54:21,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 181 transitions, 1774 flow [2024-06-28 02:54:22,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 181 transitions, 1670 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 02:54:22,266 INFO L231 Difference]: Finished difference. Result has 123 places, 163 transitions, 1319 flow [2024-06-28 02:54:22,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1319, PETRI_PLACES=123, PETRI_TRANSITIONS=163} [2024-06-28 02:54:22,267 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-28 02:54:22,267 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 163 transitions, 1319 flow [2024-06-28 02:54:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:22,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:22,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:22,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:54:22,267 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:22,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1475267960, now seen corresponding path program 1 times [2024-06-28 02:54:22,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:22,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152869892] [2024-06-28 02:54:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:22,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152869892] [2024-06-28 02:54:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152869892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:23,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:23,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:23,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556447094] [2024-06-28 02:54:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:23,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:23,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:23,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 163 transitions, 1319 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 02:54:23,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:23,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:25,620 INFO L124 PetriNetUnfolderBase]: 11550/16291 cut-off events. [2024-06-28 02:54:25,620 INFO L125 PetriNetUnfolderBase]: For 495519/495524 co-relation queries the response was YES. [2024-06-28 02:54:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102845 conditions, 16291 events. 11550/16291 cut-off events. For 495519/495524 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 93601 event pairs, 4679 based on Foata normal form. 18/16176 useless extension candidates. Maximal degree in co-relation 102798. Up to 14825 conditions per place. [2024-06-28 02:54:25,788 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 142 selfloop transitions, 79 changer transitions 0/234 dead transitions. [2024-06-28 02:54:25,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 234 transitions, 2156 flow [2024-06-28 02:54:25,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:25,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 02:54:25,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-28 02:54:25,790 INFO L175 Difference]: Start difference. First operand has 123 places, 163 transitions, 1319 flow. Second operand 9 states and 246 transitions. [2024-06-28 02:54:25,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 234 transitions, 2156 flow [2024-06-28 02:54:26,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 234 transitions, 2099 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:26,095 INFO L231 Difference]: Finished difference. Result has 129 places, 179 transitions, 1678 flow [2024-06-28 02:54:26,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1678, PETRI_PLACES=129, PETRI_TRANSITIONS=179} [2024-06-28 02:54:26,096 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 02:54:26,096 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 179 transitions, 1678 flow [2024-06-28 02:54:26,097 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 02:54:26,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:26,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:26,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:54:26,097 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:26,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1883349352, now seen corresponding path program 1 times [2024-06-28 02:54:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:26,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456568502] [2024-06-28 02:54:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456568502] [2024-06-28 02:54:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456568502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:27,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924009454] [2024-06-28 02:54:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:27,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 179 transitions, 1678 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:29,555 INFO L124 PetriNetUnfolderBase]: 11383/16126 cut-off events. [2024-06-28 02:54:29,555 INFO L125 PetriNetUnfolderBase]: For 521380/521403 co-relation queries the response was YES. [2024-06-28 02:54:29,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103641 conditions, 16126 events. 11383/16126 cut-off events. For 521380/521403 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 93339 event pairs, 4911 based on Foata normal form. 24/16109 useless extension candidates. Maximal degree in co-relation 103591. Up to 15304 conditions per place. [2024-06-28 02:54:29,694 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 155 selfloop transitions, 45 changer transitions 0/219 dead transitions. [2024-06-28 02:54:29,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 219 transitions, 2412 flow [2024-06-28 02:54:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 02:54:29,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040431266846361 [2024-06-28 02:54:29,695 INFO L175 Difference]: Start difference. First operand has 129 places, 179 transitions, 1678 flow. Second operand 7 states and 187 transitions. [2024-06-28 02:54:29,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 219 transitions, 2412 flow [2024-06-28 02:54:29,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 219 transitions, 2250 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:54:29,983 INFO L231 Difference]: Finished difference. Result has 132 places, 187 transitions, 1763 flow [2024-06-28 02:54:29,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1763, PETRI_PLACES=132, PETRI_TRANSITIONS=187} [2024-06-28 02:54:29,984 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-28 02:54:29,984 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 187 transitions, 1763 flow [2024-06-28 02:54:29,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:29,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:29,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:29,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:54:29,984 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:29,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:29,985 INFO L85 PathProgramCache]: Analyzing trace with hash -963832916, now seen corresponding path program 2 times [2024-06-28 02:54:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:29,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992995126] [2024-06-28 02:54:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992995126] [2024-06-28 02:54:31,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992995126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:31,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:31,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:31,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764651774] [2024-06-28 02:54:31,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:31,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:31,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:31,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 187 transitions, 1763 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 02:54:31,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:31,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:31,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:33,584 INFO L124 PetriNetUnfolderBase]: 11832/16755 cut-off events. [2024-06-28 02:54:33,584 INFO L125 PetriNetUnfolderBase]: For 583181/583186 co-relation queries the response was YES. [2024-06-28 02:54:33,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112112 conditions, 16755 events. 11832/16755 cut-off events. For 583181/583186 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 97249 event pairs, 4703 based on Foata normal form. 18/16658 useless extension candidates. Maximal degree in co-relation 112061. Up to 15398 conditions per place. [2024-06-28 02:54:33,763 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 152 selfloop transitions, 86 changer transitions 0/251 dead transitions. [2024-06-28 02:54:33,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 251 transitions, 2580 flow [2024-06-28 02:54:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 02:54:33,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 02:54:33,765 INFO L175 Difference]: Start difference. First operand has 132 places, 187 transitions, 1763 flow. Second operand 9 states and 243 transitions. [2024-06-28 02:54:33,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 251 transitions, 2580 flow [2024-06-28 02:54:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 251 transitions, 2504 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:54:34,192 INFO L231 Difference]: Finished difference. Result has 140 places, 199 transitions, 2072 flow [2024-06-28 02:54:34,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=140, PETRI_TRANSITIONS=199} [2024-06-28 02:54:34,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-28 02:54:34,193 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 199 transitions, 2072 flow [2024-06-28 02:54:34,193 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 02:54:34,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:34,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:54:34,193 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:34,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1373728166, now seen corresponding path program 3 times [2024-06-28 02:54:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:34,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735430383] [2024-06-28 02:54:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:34,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735430383] [2024-06-28 02:54:35,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735430383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:35,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:35,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:35,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004521223] [2024-06-28 02:54:35,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:35,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:35,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:35,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:35,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 199 transitions, 2072 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 02:54:35,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:35,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:35,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:38,261 INFO L124 PetriNetUnfolderBase]: 12033/17069 cut-off events. [2024-06-28 02:54:38,261 INFO L125 PetriNetUnfolderBase]: For 642116/642137 co-relation queries the response was YES. [2024-06-28 02:54:38,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 17069 events. 12033/17069 cut-off events. For 642116/642137 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 99572 event pairs, 4349 based on Foata normal form. 18/16969 useless extension candidates. Maximal degree in co-relation 117568. Up to 14728 conditions per place. [2024-06-28 02:54:38,419 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 141 selfloop transitions, 106 changer transitions 0/260 dead transitions. [2024-06-28 02:54:38,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 3062 flow [2024-06-28 02:54:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 02:54:38,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136268343815513 [2024-06-28 02:54:38,420 INFO L175 Difference]: Start difference. First operand has 140 places, 199 transitions, 2072 flow. Second operand 9 states and 245 transitions. [2024-06-28 02:54:38,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 3062 flow [2024-06-28 02:54:39,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 260 transitions, 2907 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:54:39,041 INFO L231 Difference]: Finished difference. Result has 147 places, 205 transitions, 2381 flow [2024-06-28 02:54:39,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=147, PETRI_TRANSITIONS=205} [2024-06-28 02:54:39,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-28 02:54:39,042 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 205 transitions, 2381 flow [2024-06-28 02:54:39,043 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 02:54:39,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:39,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:39,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:54:39,043 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:39,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -114426504, now seen corresponding path program 4 times [2024-06-28 02:54:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:39,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672970506] [2024-06-28 02:54:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:40,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:40,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672970506] [2024-06-28 02:54:40,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672970506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:40,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171449888] [2024-06-28 02:54:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:40,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:40,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 205 transitions, 2381 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 02:54:40,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:40,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:40,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:43,499 INFO L124 PetriNetUnfolderBase]: 11977/17005 cut-off events. [2024-06-28 02:54:43,499 INFO L125 PetriNetUnfolderBase]: For 669238/669243 co-relation queries the response was YES. [2024-06-28 02:54:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117360 conditions, 17005 events. 11977/17005 cut-off events. For 669238/669243 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 99155 event pairs, 4730 based on Foata normal form. 18/16913 useless extension candidates. Maximal degree in co-relation 117303. Up to 15621 conditions per place. [2024-06-28 02:54:43,655 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 159 selfloop transitions, 84 changer transitions 0/256 dead transitions. [2024-06-28 02:54:43,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 256 transitions, 3007 flow [2024-06-28 02:54:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 02:54:43,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 02:54:43,656 INFO L175 Difference]: Start difference. First operand has 147 places, 205 transitions, 2381 flow. Second operand 9 states and 243 transitions. [2024-06-28 02:54:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 256 transitions, 3007 flow [2024-06-28 02:54:44,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 256 transitions, 2829 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:44,183 INFO L231 Difference]: Finished difference. Result has 150 places, 204 transitions, 2334 flow [2024-06-28 02:54:44,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2334, PETRI_PLACES=150, PETRI_TRANSITIONS=204} [2024-06-28 02:54:44,184 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-06-28 02:54:44,184 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 204 transitions, 2334 flow [2024-06-28 02:54:44,184 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 02:54:44,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:44,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:44,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:54:44,186 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:44,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:44,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1042284480, now seen corresponding path program 2 times [2024-06-28 02:54:44,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:44,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955856984] [2024-06-28 02:54:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:44,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955856984] [2024-06-28 02:54:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955856984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:45,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:45,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897455098] [2024-06-28 02:54:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:45,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:45,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:45,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 204 transitions, 2334 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:45,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:45,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:45,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:47,880 INFO L124 PetriNetUnfolderBase]: 11745/16717 cut-off events. [2024-06-28 02:54:47,881 INFO L125 PetriNetUnfolderBase]: For 671982/672063 co-relation queries the response was YES. [2024-06-28 02:54:47,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114557 conditions, 16717 events. 11745/16717 cut-off events. For 671982/672063 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 97952 event pairs, 4959 based on Foata normal form. 29/16663 useless extension candidates. Maximal degree in co-relation 114498. Up to 15847 conditions per place. [2024-06-28 02:54:48,033 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 50 changer transitions 0/234 dead transitions. [2024-06-28 02:54:48,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 234 transitions, 3032 flow [2024-06-28 02:54:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:54:48,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-28 02:54:48,035 INFO L175 Difference]: Start difference. First operand has 150 places, 204 transitions, 2334 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:54:48,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 234 transitions, 3032 flow [2024-06-28 02:54:48,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 234 transitions, 2754 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:54:48,465 INFO L231 Difference]: Finished difference. Result has 149 places, 208 transitions, 2241 flow [2024-06-28 02:54:48,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=149, PETRI_TRANSITIONS=208} [2024-06-28 02:54:48,465 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-28 02:54:48,465 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 208 transitions, 2241 flow [2024-06-28 02:54:48,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:48,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:48,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:48,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:54:48,466 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:48,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1041868770, now seen corresponding path program 3 times [2024-06-28 02:54:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:48,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008339484] [2024-06-28 02:54:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:49,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008339484] [2024-06-28 02:54:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008339484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:49,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:49,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40151756] [2024-06-28 02:54:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:49,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:49,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 208 transitions, 2241 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:49,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:49,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:49,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:52,089 INFO L124 PetriNetUnfolderBase]: 11725/16685 cut-off events. [2024-06-28 02:54:52,089 INFO L125 PetriNetUnfolderBase]: For 693107/693188 co-relation queries the response was YES. [2024-06-28 02:54:52,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114274 conditions, 16685 events. 11725/16685 cut-off events. For 693107/693188 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 97711 event pairs, 4953 based on Foata normal form. 25/16631 useless extension candidates. Maximal degree in co-relation 114216. Up to 15833 conditions per place. [2024-06-28 02:54:52,233 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 165 selfloop transitions, 49 changer transitions 0/233 dead transitions. [2024-06-28 02:54:52,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 233 transitions, 2743 flow [2024-06-28 02:54:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:54:52,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-28 02:54:52,234 INFO L175 Difference]: Start difference. First operand has 149 places, 208 transitions, 2241 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:54:52,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 233 transitions, 2743 flow [2024-06-28 02:54:52,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 233 transitions, 2563 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 02:54:52,664 INFO L231 Difference]: Finished difference. Result has 152 places, 208 transitions, 2168 flow [2024-06-28 02:54:52,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2168, PETRI_PLACES=152, PETRI_TRANSITIONS=208} [2024-06-28 02:54:52,664 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 02:54:52,665 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 208 transitions, 2168 flow [2024-06-28 02:54:52,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:52,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:52,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:52,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:54:52,665 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:52,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1035619356, now seen corresponding path program 1 times [2024-06-28 02:54:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:52,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263647979] [2024-06-28 02:54:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:53,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263647979] [2024-06-28 02:54:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263647979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:53,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:53,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:53,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342081904] [2024-06-28 02:54:53,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:53,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:53,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:53,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 208 transitions, 2168 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:53,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:53,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:56,355 INFO L124 PetriNetUnfolderBase]: 11105/15953 cut-off events. [2024-06-28 02:54:56,355 INFO L125 PetriNetUnfolderBase]: For 622491/622493 co-relation queries the response was YES. [2024-06-28 02:54:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107828 conditions, 15953 events. 11105/15953 cut-off events. For 622491/622493 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 93651 event pairs, 4330 based on Foata normal form. 2/15915 useless extension candidates. Maximal degree in co-relation 107769. Up to 15215 conditions per place. [2024-06-28 02:54:56,627 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 214 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2024-06-28 02:54:56,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 240 transitions, 2800 flow [2024-06-28 02:54:56,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:54:56,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-28 02:54:56,629 INFO L175 Difference]: Start difference. First operand has 152 places, 208 transitions, 2168 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:54:56,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 240 transitions, 2800 flow [2024-06-28 02:54:57,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 240 transitions, 2660 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:57,093 INFO L231 Difference]: Finished difference. Result has 152 places, 212 transitions, 2161 flow [2024-06-28 02:54:57,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2161, PETRI_PLACES=152, PETRI_TRANSITIONS=212} [2024-06-28 02:54:57,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-28 02:54:57,094 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 212 transitions, 2161 flow [2024-06-28 02:54:57,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:57,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:57,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:57,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:54:57,095 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:54:57,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash 864921762, now seen corresponding path program 1 times [2024-06-28 02:54:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169404961] [2024-06-28 02:54:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:57,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:58,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:58,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169404961] [2024-06-28 02:54:58,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169404961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:58,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829915629] [2024-06-28 02:54:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:58,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:58,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:54:58,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 212 transitions, 2161 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:58,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:58,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:54:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:00,635 INFO L124 PetriNetUnfolderBase]: 11137/15997 cut-off events. [2024-06-28 02:55:00,635 INFO L125 PetriNetUnfolderBase]: For 663255/663260 co-relation queries the response was YES. [2024-06-28 02:55:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111027 conditions, 15997 events. 11137/15997 cut-off events. For 663255/663260 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 93871 event pairs, 4305 based on Foata normal form. 4/15957 useless extension candidates. Maximal degree in co-relation 110967. Up to 15184 conditions per place. [2024-06-28 02:55:00,798 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 211 selfloop transitions, 31 changer transitions 0/250 dead transitions. [2024-06-28 02:55:00,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 250 transitions, 3017 flow [2024-06-28 02:55:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:55:00,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-28 02:55:00,799 INFO L175 Difference]: Start difference. First operand has 152 places, 212 transitions, 2161 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:55:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 250 transitions, 3017 flow [2024-06-28 02:55:01,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 250 transitions, 2914 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 02:55:01,419 INFO L231 Difference]: Finished difference. Result has 154 places, 220 transitions, 2293 flow [2024-06-28 02:55:01,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2293, PETRI_PLACES=154, PETRI_TRANSITIONS=220} [2024-06-28 02:55:01,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-06-28 02:55:01,420 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 220 transitions, 2293 flow [2024-06-28 02:55:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:01,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:01,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:55:01,420 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:55:01,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash 864921576, now seen corresponding path program 2 times [2024-06-28 02:55:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776284743] [2024-06-28 02:55:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776284743] [2024-06-28 02:55:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776284743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:02,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:55:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018177044] [2024-06-28 02:55:02,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:02,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:55:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:55:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:55:02,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:55:02,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 220 transitions, 2293 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:02,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:02,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:55:02,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:05,211 INFO L124 PetriNetUnfolderBase]: 11153/16030 cut-off events. [2024-06-28 02:55:05,211 INFO L125 PetriNetUnfolderBase]: For 704621/704626 co-relation queries the response was YES. [2024-06-28 02:55:05,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114330 conditions, 16030 events. 11153/16030 cut-off events. For 704621/704626 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 94163 event pairs, 4320 based on Foata normal form. 4/15986 useless extension candidates. Maximal degree in co-relation 114269. Up to 15231 conditions per place. [2024-06-28 02:55:05,352 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 212 selfloop transitions, 35 changer transitions 0/255 dead transitions. [2024-06-28 02:55:05,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 255 transitions, 3185 flow [2024-06-28 02:55:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:55:05,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48517520215633425 [2024-06-28 02:55:05,354 INFO L175 Difference]: Start difference. First operand has 154 places, 220 transitions, 2293 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:55:05,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 255 transitions, 3185 flow [2024-06-28 02:55:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 255 transitions, 3089 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 02:55:05,924 INFO L231 Difference]: Finished difference. Result has 158 places, 228 transitions, 2468 flow [2024-06-28 02:55:05,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2468, PETRI_PLACES=158, PETRI_TRANSITIONS=228} [2024-06-28 02:55:05,925 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-06-28 02:55:05,927 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 228 transitions, 2468 flow [2024-06-28 02:55:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:05,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:05,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:55:05,928 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:55:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1510790050, now seen corresponding path program 2 times [2024-06-28 02:55:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003302619] [2024-06-28 02:55:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:06,936 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 02:55:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003302619] [2024-06-28 02:55:06,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003302619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:06,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:06,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:55:06,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137654631] [2024-06-28 02:55:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:55:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:55:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:55:07,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 02:55:07,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 228 transitions, 2468 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:07,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:07,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 02:55:07,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:09,635 INFO L124 PetriNetUnfolderBase]: 11185/16068 cut-off events. [2024-06-28 02:55:09,636 INFO L125 PetriNetUnfolderBase]: For 753715/753723 co-relation queries the response was YES. [2024-06-28 02:55:09,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117733 conditions, 16068 events. 11185/16068 cut-off events. For 753715/753723 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 94141 event pairs, 4278 based on Foata normal form. 8/16032 useless extension candidates. Maximal degree in co-relation 117670. Up to 15234 conditions per place. [2024-06-28 02:55:09,819 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 214 selfloop transitions, 36 changer transitions 0/258 dead transitions. [2024-06-28 02:55:09,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 258 transitions, 3258 flow [2024-06-28 02:55:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:55:09,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-28 02:55:09,820 INFO L175 Difference]: Start difference. First operand has 158 places, 228 transitions, 2468 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:55:09,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 258 transitions, 3258 flow [2024-06-28 02:55:10,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 258 transitions, 3146 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 02:55:10,603 INFO L231 Difference]: Finished difference. Result has 162 places, 232 transitions, 2515 flow [2024-06-28 02:55:10,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2515, PETRI_PLACES=162, PETRI_TRANSITIONS=232} [2024-06-28 02:55:10,604 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 02:55:10,604 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 232 transitions, 2515 flow [2024-06-28 02:55:10,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:10,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:10,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:55:10,605 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 02:55:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1042053096, now seen corresponding path program 3 times [2024-06-28 02:55:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844425773] [2024-06-28 02:55:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat