./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.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/mix046.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/mix046.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix046.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:31:46,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:31:46,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:31:46,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:31:46,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:31:46,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:31:46,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:31:46,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:31:46,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:31:46,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:31:46,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:31:46,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:31:46,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:31:46,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:31:46,826 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:31:46,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:31:46,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:31:46,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:31:46,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:31:46,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:31:46,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:31:46,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:31:46,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:31:46,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:31:46,829 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:31:46,829 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:31:46,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:31:46,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:31:46,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:31:46,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:31:46,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:31:46,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:31:46,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:31:46,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:31:46,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:31:46,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:31:46,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:31:46,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:31:46,833 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:31:47,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:31:47,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:31:47,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:31:47,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:31:47,066 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:31:47,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2024-06-28 03:31:48,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:31:48,328 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:31:48,329 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2024-06-28 03:31:48,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8246490b/525bb9c8ad224241835ac7d9e1c9374d/FLAG02f86f962 [2024-06-28 03:31:48,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8246490b/525bb9c8ad224241835ac7d9e1c9374d [2024-06-28 03:31:48,361 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:31:48,361 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:31:48,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix046.opt.yml/witness.yml [2024-06-28 03:31:48,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:31:48,527 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:31:48,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:31:48,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:31:48,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:31:48,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:31:48" (1/2) ... [2024-06-28 03:31:48,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd9f729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:31:48, skipping insertion in model container [2024-06-28 03:31:48,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:31:48" (1/2) ... [2024-06-28 03:31:48,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52e06543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:31:48, skipping insertion in model container [2024-06-28 03:31:48,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:31:48" (2/2) ... [2024-06-28 03:31:48,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd9f729 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:48, skipping insertion in model container [2024-06-28 03:31:48,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:31:48" (2/2) ... [2024-06-28 03:31:48,535 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:31:48,636 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:31:48,637 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:31:48,637 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$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_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:31:48,637 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:31:48,638 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$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_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x == 0 || x == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:31:48,638 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:31:48,638 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 03:31:48,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:31:48,952 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:31:48,963 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 03:31:49,125 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:31:49,156 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:31:49,156 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49 WrapperNode [2024-06-28 03:31:49,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:31:49,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:31:49,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:31:49,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:31:49,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,211 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 164 [2024-06-28 03:31:49,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:31:49,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:31:49,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:31:49,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:31:49,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,239 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:31:49,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:31:49,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:31:49,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:31:49,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:31:49,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (1/1) ... [2024-06-28 03:31:49,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:31:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:31:49,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:31:49,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:31:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:31:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:31:49,363 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:31:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:31:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:31:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:31:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:31:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:31:49,364 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:31:49,364 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:31:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:31:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:31:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:31:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:31:49,367 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:31:49,459 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:31:49,461 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:31:49,739 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:31:49,739 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:31:49,873 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:31:49,873 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:31:49,873 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:31:49 BoogieIcfgContainer [2024-06-28 03:31:49,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:31:49,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:31:49,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:31:49,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:31:49,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:31:48" (1/4) ... [2024-06-28 03:31:49,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c47f3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:31:49, skipping insertion in model container [2024-06-28 03:31:49,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:31:48" (2/4) ... [2024-06-28 03:31:49,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c47f3e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:31:49, skipping insertion in model container [2024-06-28 03:31:49,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:31:49" (3/4) ... [2024-06-28 03:31:49,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c47f3e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:31:49, skipping insertion in model container [2024-06-28 03:31:49,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:31:49" (4/4) ... [2024-06-28 03:31:49,885 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2024-06-28 03:31:49,898 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:31:49,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:31:49,898 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:31:49,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:31:49,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:31:50,022 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:31:50,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:31:50,024 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 87 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 03:31:50,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:31:50,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:31:50,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:31:50,037 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;@3e388522, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:31:50,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:31:50,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:31:50,043 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:31:50,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:31:50,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:50,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:31:50,044 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 03:31:50,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 385622724, now seen corresponding path program 1 times [2024-06-28 03:31:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:50,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414577913] [2024-06-28 03:31:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:50,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414577913] [2024-06-28 03:31:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414577913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:50,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:50,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:31:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851325629] [2024-06-28 03:31:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:50,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:31:50,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:31:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:31:51,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 03:31:51,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:51,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:51,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 03:31:51,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:52,158 INFO L124 PetriNetUnfolderBase]: 7499/10683 cut-off events. [2024-06-28 03:31:52,159 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-28 03:31:52,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21211 conditions, 10683 events. 7499/10683 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 61346 event pairs, 5548 based on Foata normal form. 1/10364 useless extension candidates. Maximal degree in co-relation 21198. Up to 10221 conditions per place. [2024-06-28 03:31:52,217 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:31:52,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-28 03:31:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:31:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:31:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-28 03:31:52,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-28 03:31:52,229 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-06-28 03:31:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-28 03:31:52,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:31:52,237 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:31:52,239 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 03:31:52,241 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:31:52,242 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:31:52,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:52,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:52,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:31:52,243 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 03:31:52,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1216270883, now seen corresponding path program 1 times [2024-06-28 03:31:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766736338] [2024-06-28 03:31:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766736338] [2024-06-28 03:31:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766736338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:52,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:52,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:31:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090740678] [2024-06-28 03:31:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:31:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:31:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:31:53,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:31:53,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:31:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:54,013 INFO L124 PetriNetUnfolderBase]: 8587/11937 cut-off events. [2024-06-28 03:31:54,013 INFO L125 PetriNetUnfolderBase]: For 2357/2357 co-relation queries the response was YES. [2024-06-28 03:31:54,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27144 conditions, 11937 events. 8587/11937 cut-off events. For 2357/2357 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 66959 event pairs, 5485 based on Foata normal form. 4/11795 useless extension candidates. Maximal degree in co-relation 27132. Up to 11644 conditions per place. [2024-06-28 03:31:54,076 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:31:54,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-28 03:31:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:31:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:31:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-28 03:31:54,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-06-28 03:31:54,080 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 126 transitions. [2024-06-28 03:31:54,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-28 03:31:54,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:31:54,082 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:31:54,083 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 03:31:54,083 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:31:54,084 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:31:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:54,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:31:54,087 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 03:31:54,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1582466492, now seen corresponding path program 1 times [2024-06-28 03:31:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863732223] [2024-06-28 03:31:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:54,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863732223] [2024-06-28 03:31:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863732223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:31:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627928283] [2024-06-28 03:31:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:31:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:31:54,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:31:55,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:31:55,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:55,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:55,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:31:55,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:56,346 INFO L124 PetriNetUnfolderBase]: 10906/15063 cut-off events. [2024-06-28 03:31:56,346 INFO L125 PetriNetUnfolderBase]: For 7999/7999 co-relation queries the response was YES. [2024-06-28 03:31:56,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37831 conditions, 15063 events. 10906/15063 cut-off events. For 7999/7999 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 82482 event pairs, 5494 based on Foata normal form. 8/14887 useless extension candidates. Maximal degree in co-relation 37817. Up to 14662 conditions per place. [2024-06-28 03:31:56,415 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 71 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 03:31:56,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 488 flow [2024-06-28 03:31:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-28 03:31:56,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550314465408805 [2024-06-28 03:31:56,417 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 175 transitions. [2024-06-28 03:31:56,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 488 flow [2024-06-28 03:31:56,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 460 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:31:56,421 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-28 03:31:56,421 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 03:31:56,422 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-28 03:31:56,422 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-28 03:31:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:56,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:31:56,423 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 03:31:56,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1409866147, now seen corresponding path program 1 times [2024-06-28 03:31:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318277029] [2024-06-28 03:31:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318277029] [2024-06-28 03:31:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318277029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:31:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066000795] [2024-06-28 03:31:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:31:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:31:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:31:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:57,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:57,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:57,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:58,392 INFO L124 PetriNetUnfolderBase]: 9502/13456 cut-off events. [2024-06-28 03:31:58,393 INFO L125 PetriNetUnfolderBase]: For 13319/13319 co-relation queries the response was YES. [2024-06-28 03:31:58,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36921 conditions, 13456 events. 9502/13456 cut-off events. For 13319/13319 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 76174 event pairs, 5228 based on Foata normal form. 3/13255 useless extension candidates. Maximal degree in co-relation 36904. Up to 12874 conditions per place. [2024-06-28 03:31:58,625 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 60 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 03:31:58,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 449 flow [2024-06-28 03:31:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:31:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:31:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:31:58,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-06-28 03:31:58,628 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:31:58,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 449 flow [2024-06-28 03:31:58,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 411 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:58,635 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 266 flow [2024-06-28 03:31:58,636 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 03:31:58,637 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-06-28 03:31:58,637 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 266 flow [2024-06-28 03:31:58,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:58,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:58,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:31:58,638 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 03:31:58,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash 733836227, now seen corresponding path program 1 times [2024-06-28 03:31:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325173428] [2024-06-28 03:31:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325173428] [2024-06-28 03:31:59,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325173428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:59,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252650055] [2024-06-28 03:31:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:59,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:59,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:59,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:59,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:01,005 INFO L124 PetriNetUnfolderBase]: 9514/13574 cut-off events. [2024-06-28 03:32:01,005 INFO L125 PetriNetUnfolderBase]: For 20419/20419 co-relation queries the response was YES. [2024-06-28 03:32:01,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40305 conditions, 13574 events. 9514/13574 cut-off events. For 20419/20419 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 77698 event pairs, 5008 based on Foata normal form. 5/13421 useless extension candidates. Maximal degree in co-relation 40286. Up to 12824 conditions per place. [2024-06-28 03:32:01,076 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 73 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-06-28 03:32:01,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 638 flow [2024-06-28 03:32:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:32:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:32:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 03:32:01,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:32:01,081 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 266 flow. Second operand 6 states and 159 transitions. [2024-06-28 03:32:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 638 flow [2024-06-28 03:32:01,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 609 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:01,087 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 407 flow [2024-06-28 03:32:01,089 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=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2024-06-28 03:32:01,091 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 03:32:01,091 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 407 flow [2024-06-28 03:32:01,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:01,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:01,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:32:01,092 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 03:32:01,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -918618588, now seen corresponding path program 1 times [2024-06-28 03:32:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233254113] [2024-06-28 03:32:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233254113] [2024-06-28 03:32:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233254113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:32:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541389875] [2024-06-28 03:32:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:01,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:32:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:32:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:32:01,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:01,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:01,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:01,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:01,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:03,633 INFO L124 PetriNetUnfolderBase]: 10931/15156 cut-off events. [2024-06-28 03:32:03,634 INFO L125 PetriNetUnfolderBase]: For 38889/38901 co-relation queries the response was YES. [2024-06-28 03:32:03,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51426 conditions, 15156 events. 10931/15156 cut-off events. For 38889/38901 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 83457 event pairs, 5714 based on Foata normal form. 11/15013 useless extension candidates. Maximal degree in co-relation 51404. Up to 14711 conditions per place. [2024-06-28 03:32:03,707 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 85 selfloop transitions, 21 changer transitions 0/113 dead transitions. [2024-06-28 03:32:03,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 793 flow [2024-06-28 03:32:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:32:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:32:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 03:32:03,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48427672955974843 [2024-06-28 03:32:03,712 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 407 flow. Second operand 6 states and 154 transitions. [2024-06-28 03:32:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 793 flow [2024-06-28 03:32:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 771 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 03:32:03,720 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 514 flow [2024-06-28 03:32:03,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-06-28 03:32:03,721 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-28 03:32:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 514 flow [2024-06-28 03:32:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:03,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:03,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:32:03,722 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 03:32:03,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1989958262, now seen corresponding path program 2 times [2024-06-28 03:32:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098091322] [2024-06-28 03:32:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098091322] [2024-06-28 03:32:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098091322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:04,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:04,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:32:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969538735] [2024-06-28 03:32:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:32:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:32:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:32:04,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:04,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:04,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:04,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:04,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:05,923 INFO L124 PetriNetUnfolderBase]: 10922/15145 cut-off events. [2024-06-28 03:32:05,924 INFO L125 PetriNetUnfolderBase]: For 52618/52627 co-relation queries the response was YES. [2024-06-28 03:32:05,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55109 conditions, 15145 events. 10922/15145 cut-off events. For 52618/52627 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 83318 event pairs, 5717 based on Foata normal form. 9/14999 useless extension candidates. Maximal degree in co-relation 55084. Up to 14702 conditions per place. [2024-06-28 03:32:06,040 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 79 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-06-28 03:32:06,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 107 transitions, 776 flow [2024-06-28 03:32:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:32:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:32:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 03:32:06,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-06-28 03:32:06,042 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 514 flow. Second operand 6 states and 148 transitions. [2024-06-28 03:32:06,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 107 transitions, 776 flow [2024-06-28 03:32:06,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 718 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 03:32:06,071 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 509 flow [2024-06-28 03:32:06,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-06-28 03:32:06,072 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-28 03:32:06,072 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 509 flow [2024-06-28 03:32:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:06,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:06,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:32:06,072 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 03:32:06,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1887080680, now seen corresponding path program 1 times [2024-06-28 03:32:06,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:06,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117301308] [2024-06-28 03:32:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117301308] [2024-06-28 03:32:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117301308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375620588] [2024-06-28 03:32:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:06,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:06,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:06,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:07,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:07,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:07,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:07,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:07,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:08,396 INFO L124 PetriNetUnfolderBase]: 11013/15283 cut-off events. [2024-06-28 03:32:08,397 INFO L125 PetriNetUnfolderBase]: For 59232/59236 co-relation queries the response was YES. [2024-06-28 03:32:08,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56116 conditions, 15283 events. 11013/15283 cut-off events. For 59232/59236 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 83985 event pairs, 5707 based on Foata normal form. 7/15138 useless extension candidates. Maximal degree in co-relation 56089. Up to 14804 conditions per place. [2024-06-28 03:32:08,507 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 103 selfloop transitions, 32 changer transitions 0/142 dead transitions. [2024-06-28 03:32:08,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 142 transitions, 1006 flow [2024-06-28 03:32:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 03:32:08,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-28 03:32:08,509 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 509 flow. Second operand 8 states and 199 transitions. [2024-06-28 03:32:08,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 142 transitions, 1006 flow [2024-06-28 03:32:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 142 transitions, 932 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:08,543 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 667 flow [2024-06-28 03:32:08,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2024-06-28 03:32:08,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-28 03:32:08,544 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 667 flow [2024-06-28 03:32:08,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:08,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:08,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:08,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:32:08,545 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 03:32:08,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash 664541032, now seen corresponding path program 2 times [2024-06-28 03:32:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:08,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708605013] [2024-06-28 03:32:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:08,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708605013] [2024-06-28 03:32:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708605013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775504023] [2024-06-28 03:32:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:09,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:09,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 667 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:09,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:09,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:09,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:11,045 INFO L124 PetriNetUnfolderBase]: 11035/15325 cut-off events. [2024-06-28 03:32:11,045 INFO L125 PetriNetUnfolderBase]: For 75256/75264 co-relation queries the response was YES. [2024-06-28 03:32:11,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60252 conditions, 15325 events. 11035/15325 cut-off events. For 75256/75264 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 84171 event pairs, 5534 based on Foata normal form. 11/15186 useless extension candidates. Maximal degree in co-relation 60223. Up to 14811 conditions per place. [2024-06-28 03:32:11,171 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 103 selfloop transitions, 34 changer transitions 0/144 dead transitions. [2024-06-28 03:32:11,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1117 flow [2024-06-28 03:32:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:32:11,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:32:11,173 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 667 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:32:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1117 flow [2024-06-28 03:32:11,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 144 transitions, 1053 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:11,221 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 744 flow [2024-06-28 03:32:11,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2024-06-28 03:32:11,221 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-28 03:32:11,222 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 744 flow [2024-06-28 03:32:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:11,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:11,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:32:11,222 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 03:32:11,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 664661188, now seen corresponding path program 1 times [2024-06-28 03:32:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955796836] [2024-06-28 03:32:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:12,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955796836] [2024-06-28 03:32:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955796836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:12,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:12,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723078259] [2024-06-28 03:32:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:12,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:12,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 744 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:12,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:12,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:12,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:13,752 INFO L124 PetriNetUnfolderBase]: 11124/15466 cut-off events. [2024-06-28 03:32:13,753 INFO L125 PetriNetUnfolderBase]: For 95298/95315 co-relation queries the response was YES. [2024-06-28 03:32:13,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64519 conditions, 15466 events. 11124/15466 cut-off events. For 95298/95315 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 85159 event pairs, 5222 based on Foata normal form. 16/15335 useless extension candidates. Maximal degree in co-relation 64489. Up to 14738 conditions per place. [2024-06-28 03:32:13,874 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 116 selfloop transitions, 43 changer transitions 0/166 dead transitions. [2024-06-28 03:32:13,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 166 transitions, 1484 flow [2024-06-28 03:32:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:32:13,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067385444743935 [2024-06-28 03:32:13,876 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 744 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:32:13,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 166 transitions, 1484 flow [2024-06-28 03:32:13,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 166 transitions, 1353 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:13,928 INFO L231 Difference]: Finished difference. Result has 90 places, 121 transitions, 904 flow [2024-06-28 03:32:13,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=904, PETRI_PLACES=90, PETRI_TRANSITIONS=121} [2024-06-28 03:32:13,928 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-28 03:32:13,929 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 121 transitions, 904 flow [2024-06-28 03:32:13,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:13,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:13,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:13,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:32:13,929 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 03:32:13,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1587596538, now seen corresponding path program 3 times [2024-06-28 03:32:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:13,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763158094] [2024-06-28 03:32:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:13,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:14,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:14,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763158094] [2024-06-28 03:32:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763158094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:14,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:14,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602506147] [2024-06-28 03:32:14,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:14,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:14,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:14,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 121 transitions, 904 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:14,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:14,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:14,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:16,542 INFO L124 PetriNetUnfolderBase]: 11146/15502 cut-off events. [2024-06-28 03:32:16,542 INFO L125 PetriNetUnfolderBase]: For 101628/101642 co-relation queries the response was YES. [2024-06-28 03:32:16,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67029 conditions, 15502 events. 11146/15502 cut-off events. For 101628/101642 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 85441 event pairs, 5328 based on Foata normal form. 11/15364 useless extension candidates. Maximal degree in co-relation 66996. Up to 14873 conditions per place. [2024-06-28 03:32:16,661 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 108 selfloop transitions, 50 changer transitions 0/165 dead transitions. [2024-06-28 03:32:16,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 165 transitions, 1492 flow [2024-06-28 03:32:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 03:32:16,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-28 03:32:16,664 INFO L175 Difference]: Start difference. First operand has 90 places, 121 transitions, 904 flow. Second operand 7 states and 179 transitions. [2024-06-28 03:32:16,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 165 transitions, 1492 flow [2024-06-28 03:32:16,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 165 transitions, 1424 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 03:32:16,728 INFO L231 Difference]: Finished difference. Result has 95 places, 129 transitions, 1063 flow [2024-06-28 03:32:16,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1063, PETRI_PLACES=95, PETRI_TRANSITIONS=129} [2024-06-28 03:32:16,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-28 03:32:16,729 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 129 transitions, 1063 flow [2024-06-28 03:32:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:16,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:16,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:32:16,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:16,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1559165858, now seen corresponding path program 2 times [2024-06-28 03:32:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:16,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357370061] [2024-06-28 03:32:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357370061] [2024-06-28 03:32:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357370061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:17,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840050085] [2024-06-28 03:32:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:17,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:17,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:17,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 129 transitions, 1063 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:17,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:17,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:17,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:19,312 INFO L124 PetriNetUnfolderBase]: 11189/15570 cut-off events. [2024-06-28 03:32:19,313 INFO L125 PetriNetUnfolderBase]: For 125163/125187 co-relation queries the response was YES. [2024-06-28 03:32:19,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71095 conditions, 15570 events. 11189/15570 cut-off events. For 125163/125187 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 85804 event pairs, 5242 based on Foata normal form. 21/15437 useless extension candidates. Maximal degree in co-relation 71060. Up to 14810 conditions per place. [2024-06-28 03:32:19,425 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 123 selfloop transitions, 50 changer transitions 0/180 dead transitions. [2024-06-28 03:32:19,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1796 flow [2024-06-28 03:32:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 03:32:19,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-28 03:32:19,427 INFO L175 Difference]: Start difference. First operand has 95 places, 129 transitions, 1063 flow. Second operand 7 states and 184 transitions. [2024-06-28 03:32:19,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1796 flow [2024-06-28 03:32:19,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1717 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:19,513 INFO L231 Difference]: Finished difference. Result has 100 places, 138 transitions, 1210 flow [2024-06-28 03:32:19,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1210, PETRI_PLACES=100, PETRI_TRANSITIONS=138} [2024-06-28 03:32:19,514 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2024-06-28 03:32:19,514 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 138 transitions, 1210 flow [2024-06-28 03:32:19,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:19,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:19,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:32:19,515 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:19,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash 839056628, now seen corresponding path program 3 times [2024-06-28 03:32:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:19,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350764693] [2024-06-28 03:32:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:20,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350764693] [2024-06-28 03:32:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350764693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520620407] [2024-06-28 03:32:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:20,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:20,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 138 transitions, 1210 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:20,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:20,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:20,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:22,124 INFO L124 PetriNetUnfolderBase]: 11201/15586 cut-off events. [2024-06-28 03:32:22,124 INFO L125 PetriNetUnfolderBase]: For 146543/146567 co-relation queries the response was YES. [2024-06-28 03:32:22,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74030 conditions, 15586 events. 11201/15586 cut-off events. For 146543/146567 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 86004 event pairs, 5240 based on Foata normal form. 21/15453 useless extension candidates. Maximal degree in co-relation 73992. Up to 14827 conditions per place. [2024-06-28 03:32:22,238 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 115 selfloop transitions, 59 changer transitions 0/181 dead transitions. [2024-06-28 03:32:22,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 181 transitions, 1838 flow [2024-06-28 03:32:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:32:22,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-28 03:32:22,240 INFO L175 Difference]: Start difference. First operand has 100 places, 138 transitions, 1210 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:32:22,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 181 transitions, 1838 flow [2024-06-28 03:32:22,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 181 transitions, 1733 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:22,335 INFO L231 Difference]: Finished difference. Result has 104 places, 143 transitions, 1305 flow [2024-06-28 03:32:22,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1305, PETRI_PLACES=104, PETRI_TRANSITIONS=143} [2024-06-28 03:32:22,337 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-28 03:32:22,337 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 143 transitions, 1305 flow [2024-06-28 03:32:22,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:22,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:22,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:32:22,337 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 03:32:22,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash 841792522, now seen corresponding path program 4 times [2024-06-28 03:32:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397368467] [2024-06-28 03:32:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:23,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397368467] [2024-06-28 03:32:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397368467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:23,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509745208] [2024-06-28 03:32:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:23,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:23,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 143 transitions, 1305 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:23,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:23,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:23,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:25,159 INFO L124 PetriNetUnfolderBase]: 11192/15570 cut-off events. [2024-06-28 03:32:25,160 INFO L125 PetriNetUnfolderBase]: For 164334/164339 co-relation queries the response was YES. [2024-06-28 03:32:25,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75701 conditions, 15570 events. 11192/15570 cut-off events. For 164334/164339 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 85672 event pairs, 5333 based on Foata normal form. 3/15412 useless extension candidates. Maximal degree in co-relation 75661. Up to 14938 conditions per place. [2024-06-28 03:32:25,294 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 117 selfloop transitions, 50 changer transitions 0/174 dead transitions. [2024-06-28 03:32:25,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1737 flow [2024-06-28 03:32:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:32:25,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-28 03:32:25,295 INFO L175 Difference]: Start difference. First operand has 104 places, 143 transitions, 1305 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:32:25,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1737 flow [2024-06-28 03:32:25,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 174 transitions, 1596 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:25,430 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1275 flow [2024-06-28 03:32:25,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1275, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-06-28 03:32:25,431 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-28 03:32:25,431 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1275 flow [2024-06-28 03:32:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:25,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:25,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:32:25,432 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 03:32:25,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash 842038786, now seen corresponding path program 1 times [2024-06-28 03:32:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:25,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943558407] [2024-06-28 03:32:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:26,371 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 03:32:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:26,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943558407] [2024-06-28 03:32:26,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943558407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:26,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:26,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494486207] [2024-06-28 03:32:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:26,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:32:26,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1275 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:26,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:26,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:32:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:28,415 INFO L124 PetriNetUnfolderBase]: 9817/14066 cut-off events. [2024-06-28 03:32:28,415 INFO L125 PetriNetUnfolderBase]: For 154529/154534 co-relation queries the response was YES. [2024-06-28 03:32:28,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68403 conditions, 14066 events. 9817/14066 cut-off events. For 154529/154534 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 80820 event pairs, 4372 based on Foata normal form. 12/13933 useless extension candidates. Maximal degree in co-relation 68362. Up to 13184 conditions per place. [2024-06-28 03:32:28,545 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 149 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-28 03:32:28,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 183 transitions, 1895 flow [2024-06-28 03:32:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 03:32:28,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-28 03:32:28,547 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1275 flow. Second operand 7 states and 184 transitions. [2024-06-28 03:32:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 183 transitions, 1895 flow [2024-06-28 03:32:28,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 183 transitions, 1759 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:28,678 INFO L231 Difference]: Finished difference. Result has 108 places, 147 transitions, 1268 flow [2024-06-28 03:32:28,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1268, PETRI_PLACES=108, PETRI_TRANSITIONS=147} [2024-06-28 03:32:28,679 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 03:32:28,679 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 147 transitions, 1268 flow [2024-06-28 03:32:28,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:28,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:28,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:32:28,680 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -454462879, now seen corresponding path program 1 times [2024-06-28 03:32:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887687119] [2024-06-28 03:32:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:29,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:29,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887687119] [2024-06-28 03:32:29,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887687119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:29,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:29,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:32:29,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516924686] [2024-06-28 03:32:29,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:29,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:32:29,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:29,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:32:29,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:32:29,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:32:29,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 147 transitions, 1268 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:29,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:29,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:32:29,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:31,152 INFO L124 PetriNetUnfolderBase]: 9247/13478 cut-off events. [2024-06-28 03:32:31,153 INFO L125 PetriNetUnfolderBase]: For 171205/171222 co-relation queries the response was YES. [2024-06-28 03:32:31,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68810 conditions, 13478 events. 9247/13478 cut-off events. For 171205/171222 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 79836 event pairs, 4523 based on Foata normal form. 17/13345 useless extension candidates. Maximal degree in co-relation 68768. Up to 12528 conditions per place. [2024-06-28 03:32:31,246 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 132 selfloop transitions, 10 changer transitions 0/161 dead transitions. [2024-06-28 03:32:31,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 161 transitions, 1596 flow [2024-06-28 03:32:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:32:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:32:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:32:31,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47924528301886793 [2024-06-28 03:32:31,248 INFO L175 Difference]: Start difference. First operand has 108 places, 147 transitions, 1268 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:32:31,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 161 transitions, 1596 flow [2024-06-28 03:32:31,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 161 transitions, 1487 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:31,341 INFO L231 Difference]: Finished difference. Result has 108 places, 147 transitions, 1188 flow [2024-06-28 03:32:31,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1188, PETRI_PLACES=108, PETRI_TRANSITIONS=147} [2024-06-28 03:32:31,341 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 03:32:31,342 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 147 transitions, 1188 flow [2024-06-28 03:32:31,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:31,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:31,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:32:31,343 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 03:32:31,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash -874062608, now seen corresponding path program 1 times [2024-06-28 03:32:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677228188] [2024-06-28 03:32:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:32,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:32,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677228188] [2024-06-28 03:32:32,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677228188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080539338] [2024-06-28 03:32:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:32,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:32,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 147 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:32,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:32,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:32,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:33,978 INFO L124 PetriNetUnfolderBase]: 11294/15582 cut-off events. [2024-06-28 03:32:33,979 INFO L125 PetriNetUnfolderBase]: For 225813/225824 co-relation queries the response was YES. [2024-06-28 03:32:34,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81275 conditions, 15582 events. 11294/15582 cut-off events. For 225813/225824 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 85213 event pairs, 5048 based on Foata normal form. 15/15514 useless extension candidates. Maximal degree in co-relation 81232. Up to 15032 conditions per place. [2024-06-28 03:32:34,136 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 157 selfloop transitions, 48 changer transitions 0/212 dead transitions. [2024-06-28 03:32:34,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 212 transitions, 2120 flow [2024-06-28 03:32:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:32:34,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-28 03:32:34,138 INFO L175 Difference]: Start difference. First operand has 108 places, 147 transitions, 1188 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:32:34,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 212 transitions, 2120 flow [2024-06-28 03:32:34,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 212 transitions, 2091 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:34,275 INFO L231 Difference]: Finished difference. Result has 114 places, 161 transitions, 1495 flow [2024-06-28 03:32:34,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1495, PETRI_PLACES=114, PETRI_TRANSITIONS=161} [2024-06-28 03:32:34,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-28 03:32:34,275 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 161 transitions, 1495 flow [2024-06-28 03:32:34,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:34,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:34,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:34,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:32:34,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:34,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash -870343538, now seen corresponding path program 2 times [2024-06-28 03:32:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:34,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996927420] [2024-06-28 03:32:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:34,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:35,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996927420] [2024-06-28 03:32:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996927420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:35,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:35,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:35,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857039362] [2024-06-28 03:32:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:35,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:35,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:35,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 161 transitions, 1495 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:35,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:35,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:35,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:37,319 INFO L124 PetriNetUnfolderBase]: 11414/15756 cut-off events. [2024-06-28 03:32:37,319 INFO L125 PetriNetUnfolderBase]: For 270717/270728 co-relation queries the response was YES. [2024-06-28 03:32:37,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88529 conditions, 15756 events. 11414/15756 cut-off events. For 270717/270728 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 86366 event pairs, 5068 based on Foata normal form. 8/15673 useless extension candidates. Maximal degree in co-relation 88484. Up to 14721 conditions per place. [2024-06-28 03:32:37,441 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 133 selfloop transitions, 88 changer transitions 0/228 dead transitions. [2024-06-28 03:32:37,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 228 transitions, 2675 flow [2024-06-28 03:32:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 03:32:37,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2024-06-28 03:32:37,443 INFO L175 Difference]: Start difference. First operand has 114 places, 161 transitions, 1495 flow. Second operand 8 states and 218 transitions. [2024-06-28 03:32:37,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 228 transitions, 2675 flow [2024-06-28 03:32:37,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 228 transitions, 2524 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:37,602 INFO L231 Difference]: Finished difference. Result has 119 places, 175 transitions, 1759 flow [2024-06-28 03:32:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1759, PETRI_PLACES=119, PETRI_TRANSITIONS=175} [2024-06-28 03:32:37,603 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-28 03:32:37,603 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 175 transitions, 1759 flow [2024-06-28 03:32:37,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:37,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:37,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:32:37,604 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 03:32:37,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 34299946, now seen corresponding path program 3 times [2024-06-28 03:32:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976647751] [2024-06-28 03:32:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976647751] [2024-06-28 03:32:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976647751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:38,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:38,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466970710] [2024-06-28 03:32:38,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:38,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:38,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 175 transitions, 1759 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:38,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:38,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:38,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:40,520 INFO L124 PetriNetUnfolderBase]: 11426/15781 cut-off events. [2024-06-28 03:32:40,520 INFO L125 PetriNetUnfolderBase]: For 314183/314194 co-relation queries the response was YES. [2024-06-28 03:32:40,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93945 conditions, 15781 events. 11426/15781 cut-off events. For 314183/314194 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 86631 event pairs, 5068 based on Foata normal form. 8/15697 useless extension candidates. Maximal degree in co-relation 93898. Up to 14738 conditions per place. [2024-06-28 03:32:40,661 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 124 selfloop transitions, 98 changer transitions 0/229 dead transitions. [2024-06-28 03:32:40,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 229 transitions, 2723 flow [2024-06-28 03:32:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 03:32:40,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070754716981132 [2024-06-28 03:32:40,663 INFO L175 Difference]: Start difference. First operand has 119 places, 175 transitions, 1759 flow. Second operand 8 states and 215 transitions. [2024-06-28 03:32:40,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 229 transitions, 2723 flow [2024-06-28 03:32:40,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 229 transitions, 2544 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:40,906 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 1884 flow [2024-06-28 03:32:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1884, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2024-06-28 03:32:40,906 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-06-28 03:32:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 1884 flow [2024-06-28 03:32:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:40,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:40,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:32:40,907 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 03:32:40,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1462641924, now seen corresponding path program 4 times [2024-06-28 03:32:40,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029517222] [2024-06-28 03:32:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:40,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029517222] [2024-06-28 03:32:41,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029517222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:41,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:41,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715921992] [2024-06-28 03:32:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:41,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:41,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:41,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 1884 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:41,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:41,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:41,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:43,942 INFO L124 PetriNetUnfolderBase]: 11492/15892 cut-off events. [2024-06-28 03:32:43,942 INFO L125 PetriNetUnfolderBase]: For 331293/331301 co-relation queries the response was YES. [2024-06-28 03:32:44,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94276 conditions, 15892 events. 11492/15892 cut-off events. For 331293/331301 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 87600 event pairs, 5062 based on Foata normal form. 7/15797 useless extension candidates. Maximal degree in co-relation 94227. Up to 14804 conditions per place. [2024-06-28 03:32:44,082 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 114 selfloop transitions, 115 changer transitions 0/236 dead transitions. [2024-06-28 03:32:44,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 236 transitions, 2934 flow [2024-06-28 03:32:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:32:44,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-28 03:32:44,084 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 1884 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:32:44,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 236 transitions, 2934 flow [2024-06-28 03:32:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 236 transitions, 2761 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:44,291 INFO L231 Difference]: Finished difference. Result has 129 places, 191 transitions, 2228 flow [2024-06-28 03:32:44,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2228, PETRI_PLACES=129, PETRI_TRANSITIONS=191} [2024-06-28 03:32:44,291 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-28 03:32:44,291 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 191 transitions, 2228 flow [2024-06-28 03:32:44,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:44,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:44,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:32:44,292 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 03:32:44,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash 325771866, now seen corresponding path program 5 times [2024-06-28 03:32:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:44,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376326518] [2024-06-28 03:32:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376326518] [2024-06-28 03:32:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376326518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:45,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:45,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:45,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115946656] [2024-06-28 03:32:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:45,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:45,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:45,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:45,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 191 transitions, 2228 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:45,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:45,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:45,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:47,276 INFO L124 PetriNetUnfolderBase]: 11535/15965 cut-off events. [2024-06-28 03:32:47,276 INFO L125 PetriNetUnfolderBase]: For 370088/370096 co-relation queries the response was YES. [2024-06-28 03:32:47,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97616 conditions, 15965 events. 11535/15965 cut-off events. For 370088/370096 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 88058 event pairs, 5062 based on Foata normal form. 7/15870 useless extension candidates. Maximal degree in co-relation 97565. Up to 14846 conditions per place. [2024-06-28 03:32:47,431 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 106 changer transitions 0/243 dead transitions. [2024-06-28 03:32:47,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 243 transitions, 3279 flow [2024-06-28 03:32:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 03:32:47,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047169811320755 [2024-06-28 03:32:47,432 INFO L175 Difference]: Start difference. First operand has 129 places, 191 transitions, 2228 flow. Second operand 8 states and 214 transitions. [2024-06-28 03:32:47,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 243 transitions, 3279 flow [2024-06-28 03:32:47,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 243 transitions, 3147 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:47,778 INFO L231 Difference]: Finished difference. Result has 134 places, 196 transitions, 2421 flow [2024-06-28 03:32:47,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2421, PETRI_PLACES=134, PETRI_TRANSITIONS=196} [2024-06-28 03:32:47,779 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-28 03:32:47,779 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 196 transitions, 2421 flow [2024-06-28 03:32:47,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:47,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:47,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:47,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:32:47,780 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 03:32:47,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash 325766286, now seen corresponding path program 6 times [2024-06-28 03:32:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:47,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427249714] [2024-06-28 03:32:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427249714] [2024-06-28 03:32:48,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427249714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:48,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:48,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331386479] [2024-06-28 03:32:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:48,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:48,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 196 transitions, 2421 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:48,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:48,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:48,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:50,803 INFO L124 PetriNetUnfolderBase]: 11524/15951 cut-off events. [2024-06-28 03:32:50,804 INFO L125 PetriNetUnfolderBase]: For 375125/375133 co-relation queries the response was YES. [2024-06-28 03:32:50,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97032 conditions, 15951 events. 11524/15951 cut-off events. For 375125/375133 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 87976 event pairs, 5062 based on Foata normal form. 7/15856 useless extension candidates. Maximal degree in co-relation 96979. Up to 14839 conditions per place. [2024-06-28 03:32:50,974 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 105 changer transitions 0/242 dead transitions. [2024-06-28 03:32:50,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 242 transitions, 3347 flow [2024-06-28 03:32:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 03:32:50,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:32:50,976 INFO L175 Difference]: Start difference. First operand has 134 places, 196 transitions, 2421 flow. Second operand 8 states and 212 transitions. [2024-06-28 03:32:50,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 242 transitions, 3347 flow [2024-06-28 03:32:51,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 242 transitions, 2828 flow, removed 62 selfloop flow, removed 11 redundant places. [2024-06-28 03:32:51,310 INFO L231 Difference]: Finished difference. Result has 131 places, 196 transitions, 2125 flow [2024-06-28 03:32:51,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2125, PETRI_PLACES=131, PETRI_TRANSITIONS=196} [2024-06-28 03:32:51,311 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 03:32:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 196 transitions, 2125 flow [2024-06-28 03:32:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:51,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:51,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:32:51,312 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 03:32:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1203445895, now seen corresponding path program 1 times [2024-06-28 03:32:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:51,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756526373] [2024-06-28 03:32:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:52,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756526373] [2024-06-28 03:32:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756526373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202392589] [2024-06-28 03:32:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:52,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:52,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:32:52,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 196 transitions, 2125 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:52,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:52,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:32:52,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:53,815 INFO L124 PetriNetUnfolderBase]: 9555/14193 cut-off events. [2024-06-28 03:32:53,815 INFO L125 PetriNetUnfolderBase]: For 335935/335952 co-relation queries the response was YES. [2024-06-28 03:32:53,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84636 conditions, 14193 events. 9555/14193 cut-off events. For 335935/335952 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 87238 event pairs, 4305 based on Foata normal form. 19/14187 useless extension candidates. Maximal degree in co-relation 84586. Up to 12885 conditions per place. [2024-06-28 03:32:53,982 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 186 selfloop transitions, 14 changer transitions 0/219 dead transitions. [2024-06-28 03:32:53,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 219 transitions, 2633 flow [2024-06-28 03:32:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:32:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:32:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 03:32:53,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:32:53,983 INFO L175 Difference]: Start difference. First operand has 131 places, 196 transitions, 2125 flow. Second operand 6 states and 150 transitions. [2024-06-28 03:32:53,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 219 transitions, 2633 flow [2024-06-28 03:32:54,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 219 transitions, 2417 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:54,254 INFO L231 Difference]: Finished difference. Result has 131 places, 200 transitions, 2004 flow [2024-06-28 03:32:54,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2004, PETRI_PLACES=131, PETRI_TRANSITIONS=200} [2024-06-28 03:32:54,255 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 03:32:54,255 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 200 transitions, 2004 flow [2024-06-28 03:32:54,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:54,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:54,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:54,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:32:54,255 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:54,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1328997081, now seen corresponding path program 1 times [2024-06-28 03:32:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:54,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855260580] [2024-06-28 03:32:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:54,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855260580] [2024-06-28 03:32:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855260580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:55,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977034247] [2024-06-28 03:32:55,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:55,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:55,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 200 transitions, 2004 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:55,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:55,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:55,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:57,312 INFO L124 PetriNetUnfolderBase]: 11597/16282 cut-off events. [2024-06-28 03:32:57,312 INFO L125 PetriNetUnfolderBase]: For 423274/423282 co-relation queries the response was YES. [2024-06-28 03:32:57,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101262 conditions, 16282 events. 11597/16282 cut-off events. For 423274/423282 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91594 event pairs, 3948 based on Foata normal form. 14/16274 useless extension candidates. Maximal degree in co-relation 101211. Up to 15428 conditions per place. [2024-06-28 03:32:57,472 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 213 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-06-28 03:32:57,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 263 transitions, 2978 flow [2024-06-28 03:32:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:32:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:32:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 03:32:57,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:32:57,474 INFO L175 Difference]: Start difference. First operand has 131 places, 200 transitions, 2004 flow. Second operand 9 states and 225 transitions. [2024-06-28 03:32:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 263 transitions, 2978 flow [2024-06-28 03:32:57,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 263 transitions, 2913 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:57,838 INFO L231 Difference]: Finished difference. Result has 136 places, 206 transitions, 2193 flow [2024-06-28 03:32:57,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=136, PETRI_TRANSITIONS=206} [2024-06-28 03:32:57,839 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 80 predicate places. [2024-06-28 03:32:57,839 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 206 transitions, 2193 flow [2024-06-28 03:32:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:57,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:57,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:57,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:32:57,840 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:57,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash 851646999, now seen corresponding path program 2 times [2024-06-28 03:32:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52072358] [2024-06-28 03:32:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52072358] [2024-06-28 03:32:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52072358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387714365] [2024-06-28 03:32:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:58,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:58,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:58,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 206 transitions, 2193 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:58,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:58,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:58,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:00,962 INFO L124 PetriNetUnfolderBase]: 11582/16267 cut-off events. [2024-06-28 03:33:00,962 INFO L125 PetriNetUnfolderBase]: For 465775/465783 co-relation queries the response was YES. [2024-06-28 03:33:01,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103894 conditions, 16267 events. 11582/16267 cut-off events. For 465775/465783 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 91477 event pairs, 4701 based on Foata normal form. 14/16256 useless extension candidates. Maximal degree in co-relation 103842. Up to 15514 conditions per place. [2024-06-28 03:33:01,127 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 208 selfloop transitions, 37 changer transitions 0/252 dead transitions. [2024-06-28 03:33:01,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 252 transitions, 2835 flow [2024-06-28 03:33:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 03:33:01,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669811320754717 [2024-06-28 03:33:01,129 INFO L175 Difference]: Start difference. First operand has 136 places, 206 transitions, 2193 flow. Second operand 8 states and 198 transitions. [2024-06-28 03:33:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 252 transitions, 2835 flow [2024-06-28 03:33:01,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 252 transitions, 2658 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-28 03:33:01,625 INFO L231 Difference]: Finished difference. Result has 139 places, 206 transitions, 2101 flow [2024-06-28 03:33:01,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2101, PETRI_PLACES=139, PETRI_TRANSITIONS=206} [2024-06-28 03:33:01,626 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-06-28 03:33:01,626 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 206 transitions, 2101 flow [2024-06-28 03:33:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:01,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:01,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:33:01,627 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 03:33:01,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1210848951, now seen corresponding path program 3 times [2024-06-28 03:33:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734524252] [2024-06-28 03:33:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:02,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734524252] [2024-06-28 03:33:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734524252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904477545] [2024-06-28 03:33:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:02,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:02,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:02,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 206 transitions, 2101 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:02,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:02,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:02,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:04,855 INFO L124 PetriNetUnfolderBase]: 11618/16318 cut-off events. [2024-06-28 03:33:04,855 INFO L125 PetriNetUnfolderBase]: For 495274/495285 co-relation queries the response was YES. [2024-06-28 03:33:04,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105128 conditions, 16318 events. 11618/16318 cut-off events. For 495274/495285 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 91787 event pairs, 4714 based on Foata normal form. 12/16303 useless extension candidates. Maximal degree in co-relation 105074. Up to 15491 conditions per place. [2024-06-28 03:33:05,039 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 190 selfloop transitions, 53 changer transitions 0/250 dead transitions. [2024-06-28 03:33:05,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 250 transitions, 2797 flow [2024-06-28 03:33:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 03:33:05,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693396226415094 [2024-06-28 03:33:05,041 INFO L175 Difference]: Start difference. First operand has 139 places, 206 transitions, 2101 flow. Second operand 8 states and 199 transitions. [2024-06-28 03:33:05,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 250 transitions, 2797 flow [2024-06-28 03:33:05,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 250 transitions, 2713 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:33:05,443 INFO L231 Difference]: Finished difference. Result has 140 places, 209 transitions, 2221 flow [2024-06-28 03:33:05,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2221, PETRI_PLACES=140, PETRI_TRANSITIONS=209} [2024-06-28 03:33:05,444 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-28 03:33:05,444 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 209 transitions, 2221 flow [2024-06-28 03:33:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:05,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:05,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:05,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:33:05,444 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:05,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1063306995, now seen corresponding path program 1 times [2024-06-28 03:33:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005039352] [2024-06-28 03:33:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:06,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005039352] [2024-06-28 03:33:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005039352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:06,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425338381] [2024-06-28 03:33:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:06,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:06,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:06,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 209 transitions, 2221 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:06,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:06,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:06,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:09,760 INFO L124 PetriNetUnfolderBase]: 11689/16388 cut-off events. [2024-06-28 03:33:09,760 INFO L125 PetriNetUnfolderBase]: For 544580/544597 co-relation queries the response was YES. [2024-06-28 03:33:09,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108640 conditions, 16388 events. 11689/16388 cut-off events. For 544580/544597 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 92107 event pairs, 4664 based on Foata normal form. 22/16370 useless extension candidates. Maximal degree in co-relation 108585. Up to 15453 conditions per place. [2024-06-28 03:33:09,888 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 198 selfloop transitions, 58 changer transitions 0/263 dead transitions. [2024-06-28 03:33:09,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 263 transitions, 3275 flow [2024-06-28 03:33:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:33:09,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49764150943396224 [2024-06-28 03:33:09,890 INFO L175 Difference]: Start difference. First operand has 140 places, 209 transitions, 2221 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:33:09,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 263 transitions, 3275 flow [2024-06-28 03:33:10,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 263 transitions, 3097 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:10,241 INFO L231 Difference]: Finished difference. Result has 142 places, 213 transitions, 2262 flow [2024-06-28 03:33:10,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2262, PETRI_PLACES=142, PETRI_TRANSITIONS=213} [2024-06-28 03:33:10,242 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-28 03:33:10,242 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 213 transitions, 2262 flow [2024-06-28 03:33:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:10,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:10,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:33:10,243 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:10,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash 162975198, now seen corresponding path program 1 times [2024-06-28 03:33:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509533650] [2024-06-28 03:33:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509533650] [2024-06-28 03:33:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509533650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:33:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517102625] [2024-06-28 03:33:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:33:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:33:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:33:11,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:33:11,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 213 transitions, 2262 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:11,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:33:11,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:13,490 INFO L124 PetriNetUnfolderBase]: 11087/15790 cut-off events. [2024-06-28 03:33:13,490 INFO L125 PetriNetUnfolderBase]: For 577905/577943 co-relation queries the response was YES. [2024-06-28 03:33:13,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108776 conditions, 15790 events. 11087/15790 cut-off events. For 577905/577943 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 91380 event pairs, 4663 based on Foata normal form. 27/15780 useless extension candidates. Maximal degree in co-relation 108720. Up to 14832 conditions per place. [2024-06-28 03:33:13,641 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 185 selfloop transitions, 41 changer transitions 0/245 dead transitions. [2024-06-28 03:33:13,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 245 transitions, 2995 flow [2024-06-28 03:33:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 03:33:13,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48427672955974843 [2024-06-28 03:33:13,643 INFO L175 Difference]: Start difference. First operand has 142 places, 213 transitions, 2262 flow. Second operand 6 states and 154 transitions. [2024-06-28 03:33:13,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 245 transitions, 2995 flow [2024-06-28 03:33:14,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 245 transitions, 2802 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:14,034 INFO L231 Difference]: Finished difference. Result has 142 places, 220 transitions, 2268 flow [2024-06-28 03:33:14,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2268, PETRI_PLACES=142, PETRI_TRANSITIONS=220} [2024-06-28 03:33:14,035 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-28 03:33:14,035 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 220 transitions, 2268 flow [2024-06-28 03:33:14,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:14,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:14,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:33:14,036 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 03:33:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1508817225, now seen corresponding path program 4 times [2024-06-28 03:33:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716248571] [2024-06-28 03:33:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:14,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:15,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716248571] [2024-06-28 03:33:15,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716248571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088104301] [2024-06-28 03:33:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:15,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:15,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 220 transitions, 2268 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:15,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:15,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:15,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:17,639 INFO L124 PetriNetUnfolderBase]: 11706/16414 cut-off events. [2024-06-28 03:33:17,639 INFO L125 PetriNetUnfolderBase]: For 609937/609942 co-relation queries the response was YES. [2024-06-28 03:33:17,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112383 conditions, 16414 events. 11706/16414 cut-off events. For 609937/609942 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 92030 event pairs, 4678 based on Foata normal form. 6/16375 useless extension candidates. Maximal degree in co-relation 112326. Up to 15613 conditions per place. [2024-06-28 03:33:17,799 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 202 selfloop transitions, 53 changer transitions 0/262 dead transitions. [2024-06-28 03:33:17,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 262 transitions, 2992 flow [2024-06-28 03:33:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 03:33:17,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-28 03:33:17,801 INFO L175 Difference]: Start difference. First operand has 142 places, 220 transitions, 2268 flow. Second operand 8 states and 196 transitions. [2024-06-28 03:33:17,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 262 transitions, 2992 flow [2024-06-28 03:33:18,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 262 transitions, 2905 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:33:18,150 INFO L231 Difference]: Finished difference. Result has 147 places, 223 transitions, 2395 flow [2024-06-28 03:33:18,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2395, PETRI_PLACES=147, PETRI_TRANSITIONS=223} [2024-06-28 03:33:18,153 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-28 03:33:18,153 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 223 transitions, 2395 flow [2024-06-28 03:33:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:18,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:18,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:33:18,153 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 03:33:18,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1745177283, now seen corresponding path program 2 times [2024-06-28 03:33:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:18,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291650489] [2024-06-28 03:33:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:19,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291650489] [2024-06-28 03:33:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291650489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:19,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704238139] [2024-06-28 03:33:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:19,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:19,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 223 transitions, 2395 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:19,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:19,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:19,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:21,893 INFO L124 PetriNetUnfolderBase]: 11777/16509 cut-off events. [2024-06-28 03:33:21,893 INFO L125 PetriNetUnfolderBase]: For 660799/660826 co-relation queries the response was YES. [2024-06-28 03:33:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115977 conditions, 16509 events. 11777/16509 cut-off events. For 660799/660826 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 92770 event pairs, 4659 based on Foata normal form. 28/16499 useless extension candidates. Maximal degree in co-relation 115919. Up to 15566 conditions per place. [2024-06-28 03:33:22,214 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 200 selfloop transitions, 66 changer transitions 0/273 dead transitions. [2024-06-28 03:33:22,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 273 transitions, 3395 flow [2024-06-28 03:33:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:33:22,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2024-06-28 03:33:22,216 INFO L175 Difference]: Start difference. First operand has 147 places, 223 transitions, 2395 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:33:22,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 273 transitions, 3395 flow [2024-06-28 03:33:22,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 273 transitions, 3207 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:22,753 INFO L231 Difference]: Finished difference. Result has 149 places, 227 transitions, 2454 flow [2024-06-28 03:33:22,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2454, PETRI_PLACES=149, PETRI_TRANSITIONS=227} [2024-06-28 03:33:22,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-06-28 03:33:22,754 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 227 transitions, 2454 flow [2024-06-28 03:33:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:22,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:33:22,755 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:22,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1111800077, now seen corresponding path program 3 times [2024-06-28 03:33:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:22,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362186374] [2024-06-28 03:33:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:23,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:23,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362186374] [2024-06-28 03:33:23,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362186374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:23,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:23,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112782054] [2024-06-28 03:33:23,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:23,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:23,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:23,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:23,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 227 transitions, 2454 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:26,388 INFO L124 PetriNetUnfolderBase]: 11887/16673 cut-off events. [2024-06-28 03:33:26,388 INFO L125 PetriNetUnfolderBase]: For 716034/716061 co-relation queries the response was YES. [2024-06-28 03:33:26,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120525 conditions, 16673 events. 11887/16673 cut-off events. For 716034/716061 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 93608 event pairs, 4365 based on Foata normal form. 28/16658 useless extension candidates. Maximal degree in co-relation 120466. Up to 15484 conditions per place. [2024-06-28 03:33:26,571 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 197 selfloop transitions, 81 changer transitions 0/285 dead transitions. [2024-06-28 03:33:26,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 285 transitions, 3774 flow [2024-06-28 03:33:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 03:33:26,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292452830188677 [2024-06-28 03:33:26,573 INFO L175 Difference]: Start difference. First operand has 149 places, 227 transitions, 2454 flow. Second operand 8 states and 209 transitions. [2024-06-28 03:33:26,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 285 transitions, 3774 flow [2024-06-28 03:33:26,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 285 transitions, 3559 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:26,978 INFO L231 Difference]: Finished difference. Result has 151 places, 235 transitions, 2628 flow [2024-06-28 03:33:26,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2628, PETRI_PLACES=151, PETRI_TRANSITIONS=235} [2024-06-28 03:33:26,979 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-28 03:33:26,979 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 235 transitions, 2628 flow [2024-06-28 03:33:26,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:26,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:26,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:26,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:33:26,980 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:26,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1348272107, now seen corresponding path program 4 times [2024-06-28 03:33:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:26,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277846018] [2024-06-28 03:33:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:26,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277846018] [2024-06-28 03:33:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277846018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:27,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:27,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806839061] [2024-06-28 03:33:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:27,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:27,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:28,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:33:28,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 235 transitions, 2628 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:28,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:28,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:33:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:30,542 INFO L124 PetriNetUnfolderBase]: 11868/16648 cut-off events. [2024-06-28 03:33:30,543 INFO L125 PetriNetUnfolderBase]: For 762752/762779 co-relation queries the response was YES. [2024-06-28 03:33:30,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123158 conditions, 16648 events. 11868/16648 cut-off events. For 762752/762779 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 93654 event pairs, 4663 based on Foata normal form. 28/16633 useless extension candidates. Maximal degree in co-relation 123098. Up to 15695 conditions per place. [2024-06-28 03:33:30,878 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 215 selfloop transitions, 61 changer transitions 0/283 dead transitions. [2024-06-28 03:33:30,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 283 transitions, 3692 flow [2024-06-28 03:33:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:33:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:33:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 03:33:30,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2024-06-28 03:33:30,880 INFO L175 Difference]: Start difference. First operand has 151 places, 235 transitions, 2628 flow. Second operand 8 states and 207 transitions. [2024-06-28 03:33:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 283 transitions, 3692 flow [2024-06-28 03:33:31,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 283 transitions, 3444 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:31,365 INFO L231 Difference]: Finished difference. Result has 155 places, 235 transitions, 2513 flow [2024-06-28 03:33:31,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=155, PETRI_TRANSITIONS=235} [2024-06-28 03:33:31,366 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-06-28 03:33:31,366 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 235 transitions, 2513 flow [2024-06-28 03:33:31,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:31,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:31,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:33:31,366 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 03:33:31,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1347870528, now seen corresponding path program 2 times [2024-06-28 03:33:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44914047] [2024-06-28 03:33:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44914047] [2024-06-28 03:33:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44914047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:32,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:33:32,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280427255] [2024-06-28 03:33:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:32,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:33:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:33:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:33:32,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:33:32,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 235 transitions, 2513 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:32,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:32,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:33:32,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand