./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix043.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix043.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix043.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-cde23df-m [2024-06-14 12:30:50,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:30:50,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:30:50,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:30:50,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:30:50,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:30:50,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:30:50,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:30:50,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:30:50,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:30:50,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:30:50,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:30:50,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:30:50,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:30:50,207 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:30:50,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:30:50,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:30:50,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:30:50,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:30:50,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:30:50,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:30:50,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:30:50,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:30:50,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:30:50,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:30:50,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:30:50,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:30:50,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:30:50,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:30:50,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:30:50,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:30:50,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:30:50,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:30:50,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:30:50,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:30:50,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:30:50,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:30:50,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:30:50,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:30:50,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:30:50,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:30:50,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:30:50,445 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:30:50,447 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:30:50,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix043.opt.yml/witness.yml [2024-06-14 12:30:50,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:30:50,628 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:30:50,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-14 12:30:51,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:30:51,861 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:30:51,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-14 12:30:51,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c1a6057f/a6cb46c82255431fad1eb723b75c0671/FLAG3272814a2 [2024-06-14 12:30:51,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c1a6057f/a6cb46c82255431fad1eb723b75c0671 [2024-06-14 12:30:51,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:30:51,895 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:30:51,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:30:51,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:30:51,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:30:51,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:30:50" (1/2) ... [2024-06-14 12:30:51,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1bc073 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:30:51, skipping insertion in model container [2024-06-14 12:30:51,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:30:50" (1/2) ... [2024-06-14 12:30:51,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65d83a5d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:30:51, skipping insertion in model container [2024-06-14 12:30:51,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:30:51" (2/2) ... [2024-06-14 12:30:51,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1bc073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:51, skipping insertion in model container [2024-06-14 12:30:51,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:30:51" (2/2) ... [2024-06-14 12:30:51,904 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:30:51,998 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:30:51,999 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:30:51,999 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:30:51,999 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:30:51,999 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:30:51,999 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:30:51,999 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-14 12:30:52,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:30:52,382 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:30:52,394 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:30:52,504 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:30:52,538 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:30:52,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52 WrapperNode [2024-06-14 12:30:52,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:30:52,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:30:52,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:30:52,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:30:52,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,603 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 165 [2024-06-14 12:30:52,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:30:52,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:30:52,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:30:52,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:30:52,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,654 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]. [2024-06-14 12:30:52,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:30:52,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:30:52,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:30:52,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:30:52,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (1/1) ... [2024-06-14 12:30:52,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:30:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:30:52,710 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) [2024-06-14 12:30:52,714 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 [2024-06-14 12:30:52,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:30:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:30:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:30:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:30:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:30:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:30:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 12:30:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 12:30:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 12:30:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 12:30:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:30:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:30:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:30:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:30:52,742 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:30:52,861 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:30:52,863 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:30:53,197 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:30:53,197 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:30:53,364 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:30:53,364 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:30:53,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:30:53 BoogieIcfgContainer [2024-06-14 12:30:53,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:30:53,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:30:53,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:30:53,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:30:53,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:30:50" (1/4) ... [2024-06-14 12:30:53,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a444cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:30:53, skipping insertion in model container [2024-06-14 12:30:53,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:30:51" (2/4) ... [2024-06-14 12:30:53,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a444cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:30:53, skipping insertion in model container [2024-06-14 12:30:53,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:30:52" (3/4) ... [2024-06-14 12:30:53,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a444cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:30:53, skipping insertion in model container [2024-06-14 12:30:53,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:30:53" (4/4) ... [2024-06-14 12:30:53,371 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.opt.i [2024-06-14 12:30:53,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:30:53,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 12:30:53,386 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:30:53,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:30:53,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:30:53,490 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-14 12:30:53,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:30:53,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 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. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:30:53,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 12:30:53,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-14 12:30:53,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:30:53,506 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;@2af9ec2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:30:53,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 12:30:53,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:30:53,509 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:30:53,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:30:53,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:53,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:30:53,510 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)] === [2024-06-14 12:30:53,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -711423861, now seen corresponding path program 1 times [2024-06-14 12:30:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869207657] [2024-06-14 12:30:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:53,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869207657] [2024-06-14 12:30:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869207657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:54,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:30:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197916583] [2024-06-14 12:30:54,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:30:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:30:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:30:54,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-06-14 12:30:54,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:54,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:54,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-06-14 12:30:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:55,862 INFO L124 PetriNetUnfolderBase]: 5891/8476 cut-off events. [2024-06-14 12:30:55,862 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-14 12:30:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16798 conditions, 8476 events. 5891/8476 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 48897 event pairs, 4304 based on Foata normal form. 1/8211 useless extension candidates. Maximal degree in co-relation 16782. Up to 8069 conditions per place. [2024-06-14 12:30:55,916 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-14 12:30:55,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 233 flow [2024-06-14 12:30:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:30:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:30:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-14 12:30:55,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-06-14 12:30:55,931 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 100 transitions. [2024-06-14 12:30:55,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 233 flow [2024-06-14 12:30:55,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 12:30:55,940 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-14 12:30:55,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 12:30:55,946 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-14 12:30:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-14 12:30:55,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:55,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:55,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:30:55,948 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)] === [2024-06-14 12:30:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -778474198, now seen corresponding path program 1 times [2024-06-14 12:30:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414585584] [2024-06-14 12:30:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:55,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414585584] [2024-06-14 12:30:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414585584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:56,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:30:56,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404165941] [2024-06-14 12:30:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:30:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:30:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:30:57,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-14 12:30:57,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:57,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:57,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-14 12:30:57,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:30:57,990 INFO L124 PetriNetUnfolderBase]: 6745/9474 cut-off events. [2024-06-14 12:30:57,991 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2024-06-14 12:30:58,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21647 conditions, 9474 events. 6745/9474 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 53513 event pairs, 4203 based on Foata normal form. 4/9355 useless extension candidates. Maximal degree in co-relation 21632. Up to 9186 conditions per place. [2024-06-14 12:30:58,055 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 54 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-14 12:30:58,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 327 flow [2024-06-14 12:30:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:30:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:30:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-14 12:30:58,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2024-06-14 12:30:58,057 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 127 transitions. [2024-06-14 12:30:58,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 327 flow [2024-06-14 12:30:58,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:30:58,059 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-14 12:30:58,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-14 12:30:58,060 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-14 12:30:58,060 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-14 12:30:58,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:58,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:30:58,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:30:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:30:58,061 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)] === [2024-06-14 12:30:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:30:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1300370093, now seen corresponding path program 1 times [2024-06-14 12:30:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:30:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028344285] [2024-06-14 12:30:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:30:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:30:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:30:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:30:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:30:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028344285] [2024-06-14 12:30:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028344285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:30:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:30:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:30:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654980417] [2024-06-14 12:30:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:30:59,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:30:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:30:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:30:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:30:59,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 12:30:59,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:30:59,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:30:59,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 12:30:59,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:00,565 INFO L124 PetriNetUnfolderBase]: 8565/11943 cut-off events. [2024-06-14 12:31:00,565 INFO L125 PetriNetUnfolderBase]: For 6727/6727 co-relation queries the response was YES. [2024-06-14 12:31:00,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30304 conditions, 11943 events. 8565/11943 cut-off events. For 6727/6727 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66761 event pairs, 4084 based on Foata normal form. 8/11795 useless extension candidates. Maximal degree in co-relation 30287. Up to 11551 conditions per place. [2024-06-14 12:31:00,636 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 72 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-14 12:31:00,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 492 flow [2024-06-14 12:31:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:31:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:31:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-14 12:31:00,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-06-14 12:31:00,638 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 6 states and 176 transitions. [2024-06-14 12:31:00,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 492 flow [2024-06-14 12:31:00,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 464 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-14 12:31:00,641 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 245 flow [2024-06-14 12:31:00,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-14 12:31:00,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-06-14 12:31:00,643 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 245 flow [2024-06-14 12:31:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:00,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:00,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:00,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:31:00,644 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)] === [2024-06-14 12:31:00,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash 69438768, now seen corresponding path program 1 times [2024-06-14 12:31:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:00,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931400188] [2024-06-14 12:31:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931400188] [2024-06-14 12:31:01,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931400188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:01,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:01,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:31:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703216651] [2024-06-14 12:31:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:01,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:31:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:31:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:31:01,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 12:31:01,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-14 12:31:01,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:01,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 12:31:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:02,957 INFO L124 PetriNetUnfolderBase]: 7458/10673 cut-off events. [2024-06-14 12:31:02,958 INFO L125 PetriNetUnfolderBase]: For 11172/11172 co-relation queries the response was YES. [2024-06-14 12:31:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29692 conditions, 10673 events. 7458/10673 cut-off events. For 11172/11172 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61170 event pairs, 3877 based on Foata normal form. 3/10503 useless extension candidates. Maximal degree in co-relation 29673. Up to 10150 conditions per place. [2024-06-14 12:31:03,038 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 60 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-14 12:31:03,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 451 flow [2024-06-14 12:31:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:31:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:31:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-14 12:31:03,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-14 12:31:03,040 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 245 flow. Second operand 5 states and 132 transitions. [2024-06-14 12:31:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 451 flow [2024-06-14 12:31:03,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 413 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:31:03,046 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 268 flow [2024-06-14 12:31:03,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-14 12:31:03,046 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-06-14 12:31:03,047 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 268 flow [2024-06-14 12:31:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-14 12:31:03,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:03,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:03,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:31:03,048 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)] === [2024-06-14 12:31:03,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1994505329, now seen corresponding path program 1 times [2024-06-14 12:31:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17788810] [2024-06-14 12:31:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17788810] [2024-06-14 12:31:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17788810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:04,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:04,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:31:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691302451] [2024-06-14 12:31:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:31:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:31:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:31:04,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:04,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:04,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:04,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:05,653 INFO L124 PetriNetUnfolderBase]: 8578/11949 cut-off events. [2024-06-14 12:31:05,653 INFO L125 PetriNetUnfolderBase]: For 19663/19685 co-relation queries the response was YES. [2024-06-14 12:31:05,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36573 conditions, 11949 events. 8578/11949 cut-off events. For 19663/19685 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66223 event pairs, 4353 based on Foata normal form. 5/11801 useless extension candidates. Maximal degree in co-relation 36552. Up to 11584 conditions per place. [2024-06-14 12:31:05,716 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 71 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-14 12:31:05,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 608 flow [2024-06-14 12:31:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:31:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:31:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-14 12:31:05,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-14 12:31:05,720 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 268 flow. Second operand 6 states and 160 transitions. [2024-06-14 12:31:05,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 608 flow [2024-06-14 12:31:05,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 579 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 12:31:05,726 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 356 flow [2024-06-14 12:31:05,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-14 12:31:05,731 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2024-06-14 12:31:05,732 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 356 flow [2024-06-14 12:31:05,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:05,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:05,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:31:05,733 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)] === [2024-06-14 12:31:05,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1101317519, now seen corresponding path program 2 times [2024-06-14 12:31:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364966216] [2024-06-14 12:31:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:06,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:06,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364966216] [2024-06-14 12:31:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364966216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:06,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:31:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554752267] [2024-06-14 12:31:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:31:06,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:31:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:31:06,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:06,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:06,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:06,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:08,486 INFO L124 PetriNetUnfolderBase]: 8569/11952 cut-off events. [2024-06-14 12:31:08,486 INFO L125 PetriNetUnfolderBase]: For 28916/28957 co-relation queries the response was YES. [2024-06-14 12:31:08,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39692 conditions, 11952 events. 8569/11952 cut-off events. For 28916/28957 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66506 event pairs, 4356 based on Foata normal form. 25/11826 useless extension candidates. Maximal degree in co-relation 39670. Up to 11575 conditions per place. [2024-06-14 12:31:08,570 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 65 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-14 12:31:08,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 590 flow [2024-06-14 12:31:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:31:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:31:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-14 12:31:08,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-14 12:31:08,572 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 356 flow. Second operand 6 states and 154 transitions. [2024-06-14 12:31:08,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 590 flow [2024-06-14 12:31:08,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 544 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-14 12:31:08,589 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 363 flow [2024-06-14 12:31:08,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-14 12:31:08,590 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 12:31:08,590 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 363 flow [2024-06-14 12:31:08,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:08,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:08,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:08,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:31:08,591 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)] === [2024-06-14 12:31:08,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1042921847, now seen corresponding path program 1 times [2024-06-14 12:31:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257348704] [2024-06-14 12:31:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257348704] [2024-06-14 12:31:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257348704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:09,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672437187] [2024-06-14 12:31:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:09,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:09,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:09,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:09,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:09,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:11,208 INFO L124 PetriNetUnfolderBase]: 8660/12106 cut-off events. [2024-06-14 12:31:11,209 INFO L125 PetriNetUnfolderBase]: For 33335/33373 co-relation queries the response was YES. [2024-06-14 12:31:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40642 conditions, 12106 events. 8660/12106 cut-off events. For 33335/33373 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67575 event pairs, 4346 based on Foata normal form. 7/11963 useless extension candidates. Maximal degree in co-relation 40618. Up to 11677 conditions per place. [2024-06-14 12:31:11,270 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 89 selfloop transitions, 32 changer transitions 0/129 dead transitions. [2024-06-14 12:31:11,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 129 transitions, 826 flow [2024-06-14 12:31:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-14 12:31:11,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-14 12:31:11,272 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 363 flow. Second operand 8 states and 207 transitions. [2024-06-14 12:31:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 129 transitions, 826 flow [2024-06-14 12:31:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 752 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:31:11,287 INFO L231 Difference]: Finished difference. Result has 76 places, 89 transitions, 515 flow [2024-06-14 12:31:11,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=76, PETRI_TRANSITIONS=89} [2024-06-14 12:31:11,288 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-06-14 12:31:11,289 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 89 transitions, 515 flow [2024-06-14 12:31:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:11,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:11,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:31:11,289 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)] === [2024-06-14 12:31:11,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 18523105, now seen corresponding path program 2 times [2024-06-14 12:31:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:11,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534506908] [2024-06-14 12:31:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:12,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534506908] [2024-06-14 12:31:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534506908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337109156] [2024-06-14 12:31:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:12,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:12,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:12,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 89 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:12,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:12,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:12,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:13,880 INFO L124 PetriNetUnfolderBase]: 8682/12144 cut-off events. [2024-06-14 12:31:13,880 INFO L125 PetriNetUnfolderBase]: For 45255/45319 co-relation queries the response was YES. [2024-06-14 12:31:13,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44138 conditions, 12144 events. 8682/12144 cut-off events. For 45255/45319 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67653 event pairs, 4266 based on Foata normal form. 11/12008 useless extension candidates. Maximal degree in co-relation 44112. Up to 11684 conditions per place. [2024-06-14 12:31:13,936 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 89 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2024-06-14 12:31:13,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 931 flow [2024-06-14 12:31:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:31:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:31:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-14 12:31:13,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 12:31:13,951 INFO L175 Difference]: Start difference. First operand has 76 places, 89 transitions, 515 flow. Second operand 7 states and 182 transitions. [2024-06-14 12:31:13,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 931 flow [2024-06-14 12:31:13,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 873 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 12:31:13,971 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 592 flow [2024-06-14 12:31:13,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-14 12:31:13,973 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-06-14 12:31:13,973 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 592 flow [2024-06-14 12:31:13,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:13,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:13,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:13,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:31:13,973 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)] === [2024-06-14 12:31:13,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 136556181, now seen corresponding path program 3 times [2024-06-14 12:31:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573383701] [2024-06-14 12:31:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:15,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:15,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573383701] [2024-06-14 12:31:15,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573383701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:15,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:15,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137921432] [2024-06-14 12:31:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:15,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:15,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:15,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:15,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:16,642 INFO L124 PetriNetUnfolderBase]: 8704/12167 cut-off events. [2024-06-14 12:31:16,642 INFO L125 PetriNetUnfolderBase]: For 59316/59374 co-relation queries the response was YES. [2024-06-14 12:31:16,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47454 conditions, 12167 events. 8704/12167 cut-off events. For 59316/59374 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67460 event pairs, 4192 based on Foata normal form. 21/12038 useless extension candidates. Maximal degree in co-relation 47427. Up to 11628 conditions per place. [2024-06-14 12:31:16,715 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 79 selfloop transitions, 50 changer transitions 0/137 dead transitions. [2024-06-14 12:31:16,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 137 transitions, 1108 flow [2024-06-14 12:31:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:31:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:31:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-14 12:31:16,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-14 12:31:16,717 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 592 flow. Second operand 7 states and 186 transitions. [2024-06-14 12:31:16,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 137 transitions, 1108 flow [2024-06-14 12:31:16,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 137 transitions, 989 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-14 12:31:16,745 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 698 flow [2024-06-14 12:31:16,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=698, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-06-14 12:31:16,746 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-14 12:31:16,746 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 698 flow [2024-06-14 12:31:16,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:16,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:16,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:16,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:31:16,747 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)] === [2024-06-14 12:31:16,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash 218896255, now seen corresponding path program 4 times [2024-06-14 12:31:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:16,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110556055] [2024-06-14 12:31:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:16,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:17,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:17,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110556055] [2024-06-14 12:31:17,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110556055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:17,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:17,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:17,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972133946] [2024-06-14 12:31:17,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:17,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:18,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:18,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 698 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:18,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:18,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:18,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:19,521 INFO L124 PetriNetUnfolderBase]: 8695/12168 cut-off events. [2024-06-14 12:31:19,522 INFO L125 PetriNetUnfolderBase]: For 60426/60484 co-relation queries the response was YES. [2024-06-14 12:31:19,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47399 conditions, 12168 events. 8695/12168 cut-off events. For 60426/60484 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67754 event pairs, 4199 based on Foata normal form. 19/12034 useless extension candidates. Maximal degree in co-relation 47371. Up to 11619 conditions per place. [2024-06-14 12:31:19,595 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 74 selfloop transitions, 50 changer transitions 0/132 dead transitions. [2024-06-14 12:31:19,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 1044 flow [2024-06-14 12:31:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:31:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:31:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-14 12:31:19,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 12:31:19,597 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 698 flow. Second operand 7 states and 180 transitions. [2024-06-14 12:31:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 1044 flow [2024-06-14 12:31:19,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 132 transitions, 961 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-14 12:31:19,628 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 726 flow [2024-06-14 12:31:19,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=726, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-06-14 12:31:19,628 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-06-14 12:31:19,629 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 726 flow [2024-06-14 12:31:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:19,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:19,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:19,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:31:19,629 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)] === [2024-06-14 12:31:19,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash -667437641, now seen corresponding path program 1 times [2024-06-14 12:31:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:19,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475550258] [2024-06-14 12:31:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475550258] [2024-06-14 12:31:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475550258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:20,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205518800] [2024-06-14 12:31:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:20,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:20,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:20,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:20,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:20,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:22,292 INFO L124 PetriNetUnfolderBase]: 9687/13764 cut-off events. [2024-06-14 12:31:22,293 INFO L125 PetriNetUnfolderBase]: For 73320/73322 co-relation queries the response was YES. [2024-06-14 12:31:22,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53052 conditions, 13764 events. 9687/13764 cut-off events. For 73320/73322 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 77727 event pairs, 4608 based on Foata normal form. 6/13569 useless extension candidates. Maximal degree in co-relation 53022. Up to 13084 conditions per place. [2024-06-14 12:31:22,393 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 115 selfloop transitions, 17 changer transitions 0/140 dead transitions. [2024-06-14 12:31:22,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 1155 flow [2024-06-14 12:31:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:31:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:31:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-14 12:31:22,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 12:31:22,395 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 726 flow. Second operand 7 states and 176 transitions. [2024-06-14 12:31:22,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 1155 flow [2024-06-14 12:31:22,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 140 transitions, 1014 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:31:22,435 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 707 flow [2024-06-14 12:31:22,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=707, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-06-14 12:31:22,436 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-14 12:31:22,436 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 707 flow [2024-06-14 12:31:22,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:22,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:22,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:31:22,437 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:31:22,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2131311893, now seen corresponding path program 1 times [2024-06-14 12:31:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887720437] [2024-06-14 12:31:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887720437] [2024-06-14 12:31:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887720437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:23,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:31:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370392429] [2024-06-14 12:31:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:31:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:31:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:31:23,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 12:31:23,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:23,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:23,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 12:31:23,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:24,808 INFO L124 PetriNetUnfolderBase]: 9069/13219 cut-off events. [2024-06-14 12:31:24,809 INFO L125 PetriNetUnfolderBase]: For 83853/83873 co-relation queries the response was YES. [2024-06-14 12:31:24,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53997 conditions, 13219 events. 9069/13219 cut-off events. For 83853/83873 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 77782 event pairs, 4701 based on Foata normal form. 20/13077 useless extension candidates. Maximal degree in co-relation 53965. Up to 12368 conditions per place. [2024-06-14 12:31:24,899 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 103 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2024-06-14 12:31:24,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 126 transitions, 1013 flow [2024-06-14 12:31:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:31:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:31:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-14 12:31:24,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-14 12:31:24,900 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 707 flow. Second operand 5 states and 128 transitions. [2024-06-14 12:31:24,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 126 transitions, 1013 flow [2024-06-14 12:31:24,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 953 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 12:31:24,947 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 720 flow [2024-06-14 12:31:24,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-06-14 12:31:24,948 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-14 12:31:24,948 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 720 flow [2024-06-14 12:31:24,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:24,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:24,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:24,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:31:24,949 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:31:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1646157115, now seen corresponding path program 1 times [2024-06-14 12:31:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113625323] [2024-06-14 12:31:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113625323] [2024-06-14 12:31:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113625323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829631188] [2024-06-14 12:31:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:25,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:26,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-14 12:31:26,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:26,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:26,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-14 12:31:26,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:27,702 INFO L124 PetriNetUnfolderBase]: 9082/13488 cut-off events. [2024-06-14 12:31:27,702 INFO L125 PetriNetUnfolderBase]: For 100403/100423 co-relation queries the response was YES. [2024-06-14 12:31:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57211 conditions, 13488 events. 9082/13488 cut-off events. For 100403/100423 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 82128 event pairs, 4665 based on Foata normal form. 22/13467 useless extension candidates. Maximal degree in co-relation 57178. Up to 12332 conditions per place. [2024-06-14 12:31:27,794 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 108 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2024-06-14 12:31:27,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1064 flow [2024-06-14 12:31:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:31:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:31:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-14 12:31:27,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-14 12:31:27,795 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 720 flow. Second operand 6 states and 151 transitions. [2024-06-14 12:31:27,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1064 flow [2024-06-14 12:31:27,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1021 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 12:31:27,852 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 764 flow [2024-06-14 12:31:27,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-06-14 12:31:27,853 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-06-14 12:31:27,853 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 764 flow [2024-06-14 12:31:27,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:27,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:27,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:27,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:31:27,854 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)] === [2024-06-14 12:31:27,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1758239662, now seen corresponding path program 1 times [2024-06-14 12:31:27,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:27,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780102698] [2024-06-14 12:31:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:27,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:29,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:29,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780102698] [2024-06-14 12:31:29,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780102698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:29,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:29,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:29,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367571733] [2024-06-14 12:31:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:29,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:29,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:29,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:29,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:29,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:31,024 INFO L124 PetriNetUnfolderBase]: 11009/15508 cut-off events. [2024-06-14 12:31:31,025 INFO L125 PetriNetUnfolderBase]: For 147675/147747 co-relation queries the response was YES. [2024-06-14 12:31:31,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72579 conditions, 15508 events. 11009/15508 cut-off events. For 147675/147747 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 88892 event pairs, 4489 based on Foata normal form. 42/15483 useless extension candidates. Maximal degree in co-relation 72545. Up to 14452 conditions per place. [2024-06-14 12:31:31,128 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 132 selfloop transitions, 41 changer transitions 0/182 dead transitions. [2024-06-14 12:31:31,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 182 transitions, 1472 flow [2024-06-14 12:31:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:31:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:31:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-14 12:31:31,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-14 12:31:31,130 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 764 flow. Second operand 9 states and 237 transitions. [2024-06-14 12:31:31,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 182 transitions, 1472 flow [2024-06-14 12:31:31,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 182 transitions, 1415 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 12:31:31,173 INFO L231 Difference]: Finished difference. Result has 97 places, 120 transitions, 882 flow [2024-06-14 12:31:31,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=882, PETRI_PLACES=97, PETRI_TRANSITIONS=120} [2024-06-14 12:31:31,173 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-06-14 12:31:31,173 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 120 transitions, 882 flow [2024-06-14 12:31:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:31,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:31,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:31:31,174 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)] === [2024-06-14 12:31:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1758300112, now seen corresponding path program 2 times [2024-06-14 12:31:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442548530] [2024-06-14 12:31:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:32,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442548530] [2024-06-14 12:31:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442548530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:32,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934647341] [2024-06-14 12:31:32,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:32,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:32,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:32,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 120 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:32,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:32,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:32,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:34,362 INFO L124 PetriNetUnfolderBase]: 10955/15382 cut-off events. [2024-06-14 12:31:34,362 INFO L125 PetriNetUnfolderBase]: For 165382/165454 co-relation queries the response was YES. [2024-06-14 12:31:34,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74127 conditions, 15382 events. 10955/15382 cut-off events. For 165382/165454 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 87734 event pairs, 5089 based on Foata normal form. 48/15403 useless extension candidates. Maximal degree in co-relation 74092. Up to 14602 conditions per place. [2024-06-14 12:31:34,488 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 124 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-14 12:31:34,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 169 transitions, 1374 flow [2024-06-14 12:31:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-14 12:31:34,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 12:31:34,490 INFO L175 Difference]: Start difference. First operand has 97 places, 120 transitions, 882 flow. Second operand 8 states and 208 transitions. [2024-06-14 12:31:34,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 169 transitions, 1374 flow [2024-06-14 12:31:34,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 169 transitions, 1301 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:31:34,560 INFO L231 Difference]: Finished difference. Result has 100 places, 120 transitions, 893 flow [2024-06-14 12:31:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=893, PETRI_PLACES=100, PETRI_TRANSITIONS=120} [2024-06-14 12:31:34,560 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-06-14 12:31:34,561 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 120 transitions, 893 flow [2024-06-14 12:31:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:34,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:34,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:34,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:31:34,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:31:34,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1876387792, now seen corresponding path program 3 times [2024-06-14 12:31:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831865279] [2024-06-14 12:31:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:34,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831865279] [2024-06-14 12:31:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831865279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690318517] [2024-06-14 12:31:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:35,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:35,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:35,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 120 transitions, 893 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:35,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:35,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:35,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:37,986 INFO L124 PetriNetUnfolderBase]: 11083/15605 cut-off events. [2024-06-14 12:31:37,986 INFO L125 PetriNetUnfolderBase]: For 183124/183182 co-relation queries the response was YES. [2024-06-14 12:31:38,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76317 conditions, 15605 events. 11083/15605 cut-off events. For 183124/183182 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 89613 event pairs, 5262 based on Foata normal form. 56/15629 useless extension candidates. Maximal degree in co-relation 76280. Up to 14719 conditions per place. [2024-06-14 12:31:38,109 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 102 selfloop transitions, 55 changer transitions 0/166 dead transitions. [2024-06-14 12:31:38,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 166 transitions, 1399 flow [2024-06-14 12:31:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-14 12:31:38,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-14 12:31:38,110 INFO L175 Difference]: Start difference. First operand has 100 places, 120 transitions, 893 flow. Second operand 8 states and 209 transitions. [2024-06-14 12:31:38,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 166 transitions, 1399 flow [2024-06-14 12:31:38,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 166 transitions, 1317 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:31:38,197 INFO L231 Difference]: Finished difference. Result has 101 places, 122 transitions, 979 flow [2024-06-14 12:31:38,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=979, PETRI_PLACES=101, PETRI_TRANSITIONS=122} [2024-06-14 12:31:38,197 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2024-06-14 12:31:38,198 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 122 transitions, 979 flow [2024-06-14 12:31:38,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:38,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:38,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:38,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:31:38,198 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)] === [2024-06-14 12:31:38,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1876572490, now seen corresponding path program 1 times [2024-06-14 12:31:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364224579] [2024-06-14 12:31:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364224579] [2024-06-14 12:31:39,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364224579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:39,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090796271] [2024-06-14 12:31:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:39,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:39,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:31:39,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 122 transitions, 979 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:39,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:39,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:31:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:41,485 INFO L124 PetriNetUnfolderBase]: 11553/16170 cut-off events. [2024-06-14 12:31:41,485 INFO L125 PetriNetUnfolderBase]: For 207561/207569 co-relation queries the response was YES. [2024-06-14 12:31:41,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79421 conditions, 16170 events. 11553/16170 cut-off events. For 207561/207569 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 90005 event pairs, 5160 based on Foata normal form. 14/16092 useless extension candidates. Maximal degree in co-relation 79383. Up to 15529 conditions per place. [2024-06-14 12:31:41,619 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 132 selfloop transitions, 35 changer transitions 0/174 dead transitions. [2024-06-14 12:31:41,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1544 flow [2024-06-14 12:31:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-14 12:31:41,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 12:31:41,621 INFO L175 Difference]: Start difference. First operand has 101 places, 122 transitions, 979 flow. Second operand 8 states and 200 transitions. [2024-06-14 12:31:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1544 flow [2024-06-14 12:31:41,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 174 transitions, 1412 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:31:41,721 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 1022 flow [2024-06-14 12:31:41,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1022, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-06-14 12:31:41,722 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places. [2024-06-14 12:31:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 1022 flow [2024-06-14 12:31:41,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:41,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:31:41,722 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:31:41,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1450330728, now seen corresponding path program 1 times [2024-06-14 12:31:41,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:41,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210095980] [2024-06-14 12:31:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:42,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210095980] [2024-06-14 12:31:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210095980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523287691] [2024-06-14 12:31:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:42,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:42,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:42,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 1022 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:42,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:44,617 INFO L124 PetriNetUnfolderBase]: 10946/15534 cut-off events. [2024-06-14 12:31:44,618 INFO L125 PetriNetUnfolderBase]: For 230580/230604 co-relation queries the response was YES. [2024-06-14 12:31:44,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79999 conditions, 15534 events. 10946/15534 cut-off events. For 230580/230604 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 88949 event pairs, 5123 based on Foata normal form. 26/15440 useless extension candidates. Maximal degree in co-relation 79959. Up to 14744 conditions per place. [2024-06-14 12:31:44,745 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 113 selfloop transitions, 35 changer transitions 0/162 dead transitions. [2024-06-14 12:31:44,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 1562 flow [2024-06-14 12:31:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:31:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:31:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-14 12:31:44,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-14 12:31:44,747 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 1022 flow. Second operand 6 states and 155 transitions. [2024-06-14 12:31:44,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 1562 flow [2024-06-14 12:31:44,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1450 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 12:31:44,848 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1105 flow [2024-06-14 12:31:44,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2024-06-14 12:31:44,848 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 48 predicate places. [2024-06-14 12:31:44,848 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1105 flow [2024-06-14 12:31:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:44,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:31:44,849 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)] === [2024-06-14 12:31:44,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1694073346, now seen corresponding path program 4 times [2024-06-14 12:31:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:44,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594259897] [2024-06-14 12:31:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594259897] [2024-06-14 12:31:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594259897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594316478] [2024-06-14 12:31:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:46,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1105 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:46,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:46,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:48,059 INFO L124 PetriNetUnfolderBase]: 11107/15735 cut-off events. [2024-06-14 12:31:48,060 INFO L125 PetriNetUnfolderBase]: For 263786/263844 co-relation queries the response was YES. [2024-06-14 12:31:48,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84959 conditions, 15735 events. 11107/15735 cut-off events. For 263786/263844 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 90717 event pairs, 5064 based on Foata normal form. 72/15730 useless extension candidates. Maximal degree in co-relation 84918. Up to 14796 conditions per place. [2024-06-14 12:31:48,201 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 114 selfloop transitions, 57 changer transitions 0/181 dead transitions. [2024-06-14 12:31:48,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 181 transitions, 1645 flow [2024-06-14 12:31:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-14 12:31:48,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-06-14 12:31:48,203 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1105 flow. Second operand 8 states and 206 transitions. [2024-06-14 12:31:48,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 181 transitions, 1645 flow [2024-06-14 12:31:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 181 transitions, 1595 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-14 12:31:48,336 INFO L231 Difference]: Finished difference. Result has 111 places, 139 transitions, 1237 flow [2024-06-14 12:31:48,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1237, PETRI_PLACES=111, PETRI_TRANSITIONS=139} [2024-06-14 12:31:48,336 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-06-14 12:31:48,336 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 139 transitions, 1237 flow [2024-06-14 12:31:48,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:48,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:48,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:48,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:31:48,337 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)] === [2024-06-14 12:31:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 990137690, now seen corresponding path program 2 times [2024-06-14 12:31:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350585401] [2024-06-14 12:31:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:49,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:49,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350585401] [2024-06-14 12:31:49,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350585401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:49,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:49,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:49,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610998582] [2024-06-14 12:31:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:49,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:49,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:31:49,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 139 transitions, 1237 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:49,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:49,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:31:49,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:51,568 INFO L124 PetriNetUnfolderBase]: 11705/16431 cut-off events. [2024-06-14 12:31:51,569 INFO L125 PetriNetUnfolderBase]: For 293029/293046 co-relation queries the response was YES. [2024-06-14 12:31:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89736 conditions, 16431 events. 11705/16431 cut-off events. For 293029/293046 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91817 event pairs, 5154 based on Foata normal form. 20/16358 useless extension candidates. Maximal degree in co-relation 89693. Up to 15744 conditions per place. [2024-06-14 12:31:51,718 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 143 selfloop transitions, 39 changer transitions 0/189 dead transitions. [2024-06-14 12:31:51,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 189 transitions, 1844 flow [2024-06-14 12:31:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-14 12:31:51,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-14 12:31:51,720 INFO L175 Difference]: Start difference. First operand has 111 places, 139 transitions, 1237 flow. Second operand 8 states and 197 transitions. [2024-06-14 12:31:51,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 189 transitions, 1844 flow [2024-06-14 12:31:51,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 189 transitions, 1698 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 12:31:51,874 INFO L231 Difference]: Finished difference. Result has 114 places, 147 transitions, 1297 flow [2024-06-14 12:31:51,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1297, PETRI_PLACES=114, PETRI_TRANSITIONS=147} [2024-06-14 12:31:51,874 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2024-06-14 12:31:51,874 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 147 transitions, 1297 flow [2024-06-14 12:31:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:51,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:31:51,875 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)] === [2024-06-14 12:31:51,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1226313050, now seen corresponding path program 3 times [2024-06-14 12:31:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:51,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088760493] [2024-06-14 12:31:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088760493] [2024-06-14 12:31:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088760493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:52,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152386069] [2024-06-14 12:31:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:53,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:31:53,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 147 transitions, 1297 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:53,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:53,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:31:53,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:55,077 INFO L124 PetriNetUnfolderBase]: 11741/16483 cut-off events. [2024-06-14 12:31:55,078 INFO L125 PetriNetUnfolderBase]: For 323466/323483 co-relation queries the response was YES. [2024-06-14 12:31:55,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93125 conditions, 16483 events. 11741/16483 cut-off events. For 323466/323483 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 92082 event pairs, 5162 based on Foata normal form. 20/16410 useless extension candidates. Maximal degree in co-relation 93080. Up to 15796 conditions per place. [2024-06-14 12:31:55,220 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 145 selfloop transitions, 43 changer transitions 0/195 dead transitions. [2024-06-14 12:31:55,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 195 transitions, 1911 flow [2024-06-14 12:31:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-14 12:31:55,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-14 12:31:55,221 INFO L175 Difference]: Start difference. First operand has 114 places, 147 transitions, 1297 flow. Second operand 8 states and 196 transitions. [2024-06-14 12:31:55,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 195 transitions, 1911 flow [2024-06-14 12:31:55,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 195 transitions, 1771 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-14 12:31:55,374 INFO L231 Difference]: Finished difference. Result has 117 places, 153 transitions, 1357 flow [2024-06-14 12:31:55,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1357, PETRI_PLACES=117, PETRI_TRANSITIONS=153} [2024-06-14 12:31:55,374 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2024-06-14 12:31:55,375 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 153 transitions, 1357 flow [2024-06-14 12:31:55,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:55,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:55,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:55,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:31:55,375 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)] === [2024-06-14 12:31:55,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1457416618, now seen corresponding path program 4 times [2024-06-14 12:31:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:55,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004340567] [2024-06-14 12:31:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004340567] [2024-06-14 12:31:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004340567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:31:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638406986] [2024-06-14 12:31:56,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:56,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:31:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:31:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:31:56,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:31:56,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 153 transitions, 1357 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:56,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:56,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:31:56,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:31:58,602 INFO L124 PetriNetUnfolderBase]: 11726/16430 cut-off events. [2024-06-14 12:31:58,602 INFO L125 PetriNetUnfolderBase]: For 354362/354379 co-relation queries the response was YES. [2024-06-14 12:31:58,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95450 conditions, 16430 events. 11726/16430 cut-off events. For 354362/354379 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 91586 event pairs, 4800 based on Foata normal form. 20/16357 useless extension candidates. Maximal degree in co-relation 95404. Up to 15647 conditions per place. [2024-06-14 12:31:58,744 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 138 selfloop transitions, 54 changer transitions 0/199 dead transitions. [2024-06-14 12:31:58,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 1959 flow [2024-06-14 12:31:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:31:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:31:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-14 12:31:58,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-14 12:31:58,746 INFO L175 Difference]: Start difference. First operand has 117 places, 153 transitions, 1357 flow. Second operand 8 states and 197 transitions. [2024-06-14 12:31:58,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 1959 flow [2024-06-14 12:31:58,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 199 transitions, 1832 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-14 12:31:58,935 INFO L231 Difference]: Finished difference. Result has 121 places, 156 transitions, 1430 flow [2024-06-14 12:31:58,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1430, PETRI_PLACES=121, PETRI_TRANSITIONS=156} [2024-06-14 12:31:58,936 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-14 12:31:58,936 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 156 transitions, 1430 flow [2024-06-14 12:31:58,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:58,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:31:58,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:31:58,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:31:58,936 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)] === [2024-06-14 12:31:58,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:31:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 508725258, now seen corresponding path program 2 times [2024-06-14 12:31:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:31:58,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735479521] [2024-06-14 12:31:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:31:58,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:31:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:31:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:31:59,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:31:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735479521] [2024-06-14 12:31:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735479521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:31:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:31:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:31:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110066869] [2024-06-14 12:31:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:31:59,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:31:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:31:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:31:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:31:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:31:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 156 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:31:59,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:31:59,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:31:59,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:01,895 INFO L124 PetriNetUnfolderBase]: 11090/15780 cut-off events. [2024-06-14 12:32:01,895 INFO L125 PetriNetUnfolderBase]: For 381872/381887 co-relation queries the response was YES. [2024-06-14 12:32:01,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93707 conditions, 15780 events. 11090/15780 cut-off events. For 381872/381887 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 90777 event pairs, 5133 based on Foata normal form. 17/15673 useless extension candidates. Maximal degree in co-relation 93660. Up to 14942 conditions per place. [2024-06-14 12:32:02,063 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 120 selfloop transitions, 35 changer transitions 0/174 dead transitions. [2024-06-14 12:32:02,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 174 transitions, 1796 flow [2024-06-14 12:32:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:32:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:32:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-14 12:32:02,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-14 12:32:02,064 INFO L175 Difference]: Start difference. First operand has 121 places, 156 transitions, 1430 flow. Second operand 6 states and 147 transitions. [2024-06-14 12:32:02,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 174 transitions, 1796 flow [2024-06-14 12:32:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 174 transitions, 1594 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-14 12:32:02,267 INFO L231 Difference]: Finished difference. Result has 121 places, 156 transitions, 1307 flow [2024-06-14 12:32:02,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1307, PETRI_PLACES=121, PETRI_TRANSITIONS=156} [2024-06-14 12:32:02,268 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-14 12:32:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 156 transitions, 1307 flow [2024-06-14 12:32:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:02,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:32:02,269 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:02,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 503017290, now seen corresponding path program 1 times [2024-06-14 12:32:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038055131] [2024-06-14 12:32:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038055131] [2024-06-14 12:32:03,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038055131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:03,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:03,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:32:03,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12021317] [2024-06-14 12:32:03,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:32:03,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:32:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:32:03,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:03,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 156 transitions, 1307 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:03,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:03,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:03,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:05,130 INFO L124 PetriNetUnfolderBase]: 10333/14893 cut-off events. [2024-06-14 12:32:05,130 INFO L125 PetriNetUnfolderBase]: For 355623/355629 co-relation queries the response was YES. [2024-06-14 12:32:05,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88284 conditions, 14893 events. 10333/14893 cut-off events. For 355623/355629 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 86442 event pairs, 4376 based on Foata normal form. 6/14771 useless extension candidates. Maximal degree in co-relation 88236. Up to 14061 conditions per place. [2024-06-14 12:32:05,270 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 158 selfloop transitions, 21 changer transitions 0/187 dead transitions. [2024-06-14 12:32:05,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 187 transitions, 1951 flow [2024-06-14 12:32:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:32:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:32:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-14 12:32:05,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-14 12:32:05,271 INFO L175 Difference]: Start difference. First operand has 121 places, 156 transitions, 1307 flow. Second operand 6 states and 152 transitions. [2024-06-14 12:32:05,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 187 transitions, 1951 flow [2024-06-14 12:32:05,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 187 transitions, 1850 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:32:05,503 INFO L231 Difference]: Finished difference. Result has 122 places, 164 transitions, 1393 flow [2024-06-14 12:32:05,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1393, PETRI_PLACES=122, PETRI_TRANSITIONS=164} [2024-06-14 12:32:05,504 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2024-06-14 12:32:05,504 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 164 transitions, 1393 flow [2024-06-14 12:32:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:05,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:05,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:05,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:32:05,504 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:05,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1482003180, now seen corresponding path program 2 times [2024-06-14 12:32:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:05,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509720202] [2024-06-14 12:32:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:06,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:06,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509720202] [2024-06-14 12:32:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509720202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:06,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:06,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:32:06,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37260569] [2024-06-14 12:32:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:06,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:32:06,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:32:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:32:06,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:06,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 164 transitions, 1393 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:06,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:06,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:06,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:08,459 INFO L124 PetriNetUnfolderBase]: 10326/14885 cut-off events. [2024-06-14 12:32:08,459 INFO L125 PetriNetUnfolderBase]: For 386690/386697 co-relation queries the response was YES. [2024-06-14 12:32:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91269 conditions, 14885 events. 10326/14885 cut-off events. For 386690/386697 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 86486 event pairs, 4395 based on Foata normal form. 6/14762 useless extension candidates. Maximal degree in co-relation 91220. Up to 14054 conditions per place. [2024-06-14 12:32:08,613 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 153 selfloop transitions, 21 changer transitions 0/182 dead transitions. [2024-06-14 12:32:08,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 182 transitions, 1797 flow [2024-06-14 12:32:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:32:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:32:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-14 12:32:08,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-14 12:32:08,614 INFO L175 Difference]: Start difference. First operand has 122 places, 164 transitions, 1393 flow. Second operand 6 states and 147 transitions. [2024-06-14 12:32:08,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 182 transitions, 1797 flow [2024-06-14 12:32:08,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 182 transitions, 1683 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-14 12:32:08,897 INFO L231 Difference]: Finished difference. Result has 126 places, 164 transitions, 1330 flow [2024-06-14 12:32:08,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1330, PETRI_PLACES=126, PETRI_TRANSITIONS=164} [2024-06-14 12:32:08,898 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 69 predicate places. [2024-06-14 12:32:08,898 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 164 transitions, 1330 flow [2024-06-14 12:32:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:08,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:08,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:08,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:32:08,899 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)] === [2024-06-14 12:32:08,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2075774538, now seen corresponding path program 1 times [2024-06-14 12:32:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:08,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785619572] [2024-06-14 12:32:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785619572] [2024-06-14 12:32:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785619572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:10,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:32:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379478206] [2024-06-14 12:32:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:32:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:32:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:32:10,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:32:10,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 164 transitions, 1330 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:10,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:10,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:32:10,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:12,485 INFO L124 PetriNetUnfolderBase]: 11997/16859 cut-off events. [2024-06-14 12:32:12,485 INFO L125 PetriNetUnfolderBase]: For 480843/480845 co-relation queries the response was YES. [2024-06-14 12:32:12,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104818 conditions, 16859 events. 11997/16859 cut-off events. For 480843/480845 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94599 event pairs, 4995 based on Foata normal form. 18/16777 useless extension candidates. Maximal degree in co-relation 104767. Up to 15557 conditions per place. [2024-06-14 12:32:12,645 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 149 selfloop transitions, 79 changer transitions 0/235 dead transitions. [2024-06-14 12:32:12,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 235 transitions, 2185 flow [2024-06-14 12:32:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:32:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:32:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-14 12:32:12,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2024-06-14 12:32:12,648 INFO L175 Difference]: Start difference. First operand has 126 places, 164 transitions, 1330 flow. Second operand 9 states and 230 transitions. [2024-06-14 12:32:12,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 235 transitions, 2185 flow [2024-06-14 12:32:12,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 235 transitions, 2123 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:32:12,954 INFO L231 Difference]: Finished difference. Result has 131 places, 180 transitions, 1686 flow [2024-06-14 12:32:12,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1686, PETRI_PLACES=131, PETRI_TRANSITIONS=180} [2024-06-14 12:32:12,954 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2024-06-14 12:32:12,954 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 180 transitions, 1686 flow [2024-06-14 12:32:12,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:12,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:12,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:12,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:32:12,955 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:12,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1642660480, now seen corresponding path program 1 times [2024-06-14 12:32:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:12,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966156948] [2024-06-14 12:32:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966156948] [2024-06-14 12:32:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966156948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:14,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:32:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582534552] [2024-06-14 12:32:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:32:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:32:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:32:14,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:14,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 180 transitions, 1686 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:14,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:14,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:16,656 INFO L124 PetriNetUnfolderBase]: 11411/16214 cut-off events. [2024-06-14 12:32:16,656 INFO L125 PetriNetUnfolderBase]: For 511049/511070 co-relation queries the response was YES. [2024-06-14 12:32:16,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104683 conditions, 16214 events. 11411/16214 cut-off events. For 511049/511070 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 93524 event pairs, 4927 based on Foata normal form. 24/16166 useless extension candidates. Maximal degree in co-relation 104630. Up to 15304 conditions per place. [2024-06-14 12:32:16,779 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 156 selfloop transitions, 45 changer transitions 0/220 dead transitions. [2024-06-14 12:32:16,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 220 transitions, 2422 flow [2024-06-14 12:32:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:32:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:32:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-14 12:32:16,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-14 12:32:16,780 INFO L175 Difference]: Start difference. First operand has 131 places, 180 transitions, 1686 flow. Second operand 7 states and 181 transitions. [2024-06-14 12:32:16,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 220 transitions, 2422 flow [2024-06-14 12:32:17,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 220 transitions, 2256 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 12:32:17,287 INFO L231 Difference]: Finished difference. Result has 134 places, 188 transitions, 1767 flow [2024-06-14 12:32:17,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1767, PETRI_PLACES=134, PETRI_TRANSITIONS=188} [2024-06-14 12:32:17,288 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-06-14 12:32:17,288 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 188 transitions, 1767 flow [2024-06-14 12:32:17,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:17,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:17,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:17,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:32:17,289 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:17,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -970939560, now seen corresponding path program 2 times [2024-06-14 12:32:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752601075] [2024-06-14 12:32:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:18,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:18,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752601075] [2024-06-14 12:32:18,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752601075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:18,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:32:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806044353] [2024-06-14 12:32:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:18,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:32:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:32:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:32:18,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:32:18,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 188 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:18,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:18,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:32:18,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:21,508 INFO L124 PetriNetUnfolderBase]: 12303/17259 cut-off events. [2024-06-14 12:32:21,509 INFO L125 PetriNetUnfolderBase]: For 556776/556778 co-relation queries the response was YES. [2024-06-14 12:32:21,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113266 conditions, 17259 events. 12303/17259 cut-off events. For 556776/556778 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 96891 event pairs, 5019 based on Foata normal form. 18/17235 useless extension candidates. Maximal degree in co-relation 113212. Up to 16164 conditions per place. [2024-06-14 12:32:21,641 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 161 selfloop transitions, 81 changer transitions 0/249 dead transitions. [2024-06-14 12:32:21,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 249 transitions, 2575 flow [2024-06-14 12:32:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:32:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:32:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-14 12:32:21,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-14 12:32:21,643 INFO L175 Difference]: Start difference. First operand has 134 places, 188 transitions, 1767 flow. Second operand 9 states and 228 transitions. [2024-06-14 12:32:21,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 249 transitions, 2575 flow [2024-06-14 12:32:21,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 249 transitions, 2499 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-14 12:32:21,957 INFO L231 Difference]: Finished difference. Result has 142 places, 197 transitions, 2033 flow [2024-06-14 12:32:21,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2033, PETRI_PLACES=142, PETRI_TRANSITIONS=197} [2024-06-14 12:32:21,957 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 85 predicate places. [2024-06-14 12:32:21,957 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 197 transitions, 2033 flow [2024-06-14 12:32:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:21,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:21,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:21,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:32:21,958 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)] === [2024-06-14 12:32:21,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -639000138, now seen corresponding path program 3 times [2024-06-14 12:32:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307331300] [2024-06-14 12:32:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:23,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307331300] [2024-06-14 12:32:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307331300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:23,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:32:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247694199] [2024-06-14 12:32:23,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:32:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:32:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:32:23,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:32:23,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 197 transitions, 2033 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:23,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:23,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:32:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:27,075 INFO L124 PetriNetUnfolderBase]: 12487/17649 cut-off events. [2024-06-14 12:32:27,075 INFO L125 PetriNetUnfolderBase]: For 618336/618338 co-relation queries the response was YES. [2024-06-14 12:32:27,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118501 conditions, 17649 events. 12487/17649 cut-off events. For 618336/618338 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 100515 event pairs, 5067 based on Foata normal form. 18/17560 useless extension candidates. Maximal degree in co-relation 118443. Up to 16444 conditions per place. [2024-06-14 12:32:27,217 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 163 selfloop transitions, 86 changer transitions 0/256 dead transitions. [2024-06-14 12:32:27,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 256 transitions, 2857 flow [2024-06-14 12:32:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:32:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:32:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-14 12:32:27,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670781893004115 [2024-06-14 12:32:27,219 INFO L175 Difference]: Start difference. First operand has 142 places, 197 transitions, 2033 flow. Second operand 9 states and 227 transitions. [2024-06-14 12:32:27,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 256 transitions, 2857 flow [2024-06-14 12:32:27,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 256 transitions, 2661 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-14 12:32:27,611 INFO L231 Difference]: Finished difference. Result has 148 places, 204 transitions, 2176 flow [2024-06-14 12:32:27,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2176, PETRI_PLACES=148, PETRI_TRANSITIONS=204} [2024-06-14 12:32:27,612 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 91 predicate places. [2024-06-14 12:32:27,612 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 204 transitions, 2176 flow [2024-06-14 12:32:27,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:27,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:27,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:32:27,613 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)] === [2024-06-14 12:32:27,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash 696341558, now seen corresponding path program 4 times [2024-06-14 12:32:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831981482] [2024-06-14 12:32:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:28,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831981482] [2024-06-14 12:32:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831981482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:32:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056488246] [2024-06-14 12:32:28,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:32:28,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:32:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:32:29,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 12:32:29,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 204 transitions, 2176 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:29,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:29,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 12:32:29,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:32,013 INFO L124 PetriNetUnfolderBase]: 12448/17592 cut-off events. [2024-06-14 12:32:32,013 INFO L125 PetriNetUnfolderBase]: For 651988/651990 co-relation queries the response was YES. [2024-06-14 12:32:32,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118472 conditions, 17592 events. 12448/17592 cut-off events. For 651988/651990 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 100095 event pairs, 4609 based on Foata normal form. 18/17503 useless extension candidates. Maximal degree in co-relation 118412. Up to 15445 conditions per place. [2024-06-14 12:32:32,166 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 145 selfloop transitions, 106 changer transitions 0/258 dead transitions. [2024-06-14 12:32:32,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 258 transitions, 2906 flow [2024-06-14 12:32:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:32:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:32:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-14 12:32:32,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2024-06-14 12:32:32,168 INFO L175 Difference]: Start difference. First operand has 148 places, 204 transitions, 2176 flow. Second operand 9 states and 226 transitions. [2024-06-14 12:32:32,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 258 transitions, 2906 flow [2024-06-14 12:32:32,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 258 transitions, 2716 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-14 12:32:32,476 INFO L231 Difference]: Finished difference. Result has 152 places, 205 transitions, 2251 flow [2024-06-14 12:32:32,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2251, PETRI_PLACES=152, PETRI_TRANSITIONS=205} [2024-06-14 12:32:32,477 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 95 predicate places. [2024-06-14 12:32:32,477 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 205 transitions, 2251 flow [2024-06-14 12:32:32,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:32,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:32,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:32:32,478 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1408968348, now seen corresponding path program 2 times [2024-06-14 12:32:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353648806] [2024-06-14 12:32:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:32,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:33,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:33,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353648806] [2024-06-14 12:32:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353648806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:33,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:33,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:32:33,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225163433] [2024-06-14 12:32:33,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:33,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:32:33,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:32:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:32:33,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:33,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 205 transitions, 2251 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:33,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:33,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:33,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:36,848 INFO L124 PetriNetUnfolderBase]: 11765/16854 cut-off events. [2024-06-14 12:32:36,848 INFO L125 PetriNetUnfolderBase]: For 678776/678857 co-relation queries the response was YES. [2024-06-14 12:32:36,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115754 conditions, 16854 events. 11765/16854 cut-off events. For 678776/678857 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 98738 event pairs, 4959 based on Foata normal form. 31/16716 useless extension candidates. Maximal degree in co-relation 115693. Up to 15847 conditions per place. [2024-06-14 12:32:37,022 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 166 selfloop transitions, 50 changer transitions 0/235 dead transitions. [2024-06-14 12:32:37,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 235 transitions, 2951 flow [2024-06-14 12:32:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:32:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:32:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-14 12:32:37,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 12:32:37,024 INFO L175 Difference]: Start difference. First operand has 152 places, 205 transitions, 2251 flow. Second operand 7 states and 172 transitions. [2024-06-14 12:32:37,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 235 transitions, 2951 flow [2024-06-14 12:32:37,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 235 transitions, 2676 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 12:32:37,429 INFO L231 Difference]: Finished difference. Result has 152 places, 209 transitions, 2161 flow [2024-06-14 12:32:37,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2161, PETRI_PLACES=152, PETRI_TRANSITIONS=209} [2024-06-14 12:32:37,430 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 95 predicate places. [2024-06-14 12:32:37,430 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 209 transitions, 2161 flow [2024-06-14 12:32:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:37,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:37,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:32:37,431 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:37,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2022546186, now seen corresponding path program 3 times [2024-06-14 12:32:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279646534] [2024-06-14 12:32:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279646534] [2024-06-14 12:32:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279646534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:38,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:38,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:32:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711602664] [2024-06-14 12:32:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:32:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:32:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:32:38,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:38,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 209 transitions, 2161 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:38,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:38,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:38,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:41,777 INFO L124 PetriNetUnfolderBase]: 11738/16815 cut-off events. [2024-06-14 12:32:41,777 INFO L125 PetriNetUnfolderBase]: For 698340/698421 co-relation queries the response was YES. [2024-06-14 12:32:41,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115205 conditions, 16815 events. 11738/16815 cut-off events. For 698340/698421 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 98518 event pairs, 4953 based on Foata normal form. 27/16677 useless extension candidates. Maximal degree in co-relation 115143. Up to 15826 conditions per place. [2024-06-14 12:32:41,925 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 166 selfloop transitions, 49 changer transitions 0/234 dead transitions. [2024-06-14 12:32:41,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 234 transitions, 2665 flow [2024-06-14 12:32:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:32:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:32:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-14 12:32:41,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 12:32:41,927 INFO L175 Difference]: Start difference. First operand has 152 places, 209 transitions, 2161 flow. Second operand 7 states and 172 transitions. [2024-06-14 12:32:41,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 234 transitions, 2665 flow [2024-06-14 12:32:42,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 234 transitions, 2485 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-14 12:32:42,326 INFO L231 Difference]: Finished difference. Result has 155 places, 209 transitions, 2088 flow [2024-06-14 12:32:42,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2088, PETRI_PLACES=155, PETRI_TRANSITIONS=209} [2024-06-14 12:32:42,327 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places. [2024-06-14 12:32:42,327 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 209 transitions, 2088 flow [2024-06-14 12:32:42,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:42,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:42,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:32:42,328 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)] === [2024-06-14 12:32:42,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1586451222, now seen corresponding path program 1 times [2024-06-14 12:32:42,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:42,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760622976] [2024-06-14 12:32:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:42,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:43,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760622976] [2024-06-14 12:32:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760622976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:32:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509195494] [2024-06-14 12:32:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:43,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:32:43,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:32:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:32:43,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:43,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 209 transitions, 2088 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:43,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:43,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:43,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:32:46,389 INFO L124 PetriNetUnfolderBase]: 11105/16116 cut-off events. [2024-06-14 12:32:46,389 INFO L125 PetriNetUnfolderBase]: For 636441/636443 co-relation queries the response was YES. [2024-06-14 12:32:46,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108558 conditions, 16116 events. 11105/16116 cut-off events. For 636441/636443 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 95328 event pairs, 4330 based on Foata normal form. 2/15977 useless extension candidates. Maximal degree in co-relation 108495. Up to 15215 conditions per place. [2024-06-14 12:32:46,528 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 215 selfloop transitions, 18 changer transitions 0/241 dead transitions. [2024-06-14 12:32:46,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 241 transitions, 2724 flow [2024-06-14 12:32:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:32:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:32:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-14 12:32:46,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 12:32:46,529 INFO L175 Difference]: Start difference. First operand has 155 places, 209 transitions, 2088 flow. Second operand 7 states and 171 transitions. [2024-06-14 12:32:46,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 241 transitions, 2724 flow [2024-06-14 12:32:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 241 transitions, 2584 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 12:32:46,881 INFO L231 Difference]: Finished difference. Result has 155 places, 213 transitions, 2083 flow [2024-06-14 12:32:46,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2083, PETRI_PLACES=155, PETRI_TRANSITIONS=213} [2024-06-14 12:32:46,881 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places. [2024-06-14 12:32:46,881 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 213 transitions, 2083 flow [2024-06-14 12:32:46,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:46,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:32:46,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:32:46,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:32:46,882 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 12:32:46,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:32:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1586331252, now seen corresponding path program 2 times [2024-06-14 12:32:46,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:32:46,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88366733] [2024-06-14 12:32:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:32:46,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:32:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:32:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:32:48,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:32:48,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88366733] [2024-06-14 12:32:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88366733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:32:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:32:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:32:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939095310] [2024-06-14 12:32:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:32:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:32:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:32:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:32:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:32:48,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-14 12:32:48,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 213 transitions, 2083 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:32:48,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:32:48,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-14 12:32:48,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand