./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:33:22,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:33:22,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:33:22,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:33:22,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:33:22,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:33:22,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:33:22,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:33:22,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:33:22,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:33:22,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:33:22,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:33:22,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:33:22,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:33:22,163 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:33:22,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:33:22,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:33:22,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:33:22,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:33:22,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:33:22,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:33:22,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:33:22,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:33:22,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:33:22,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:33:22,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:33:22,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:33:22,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:33:22,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:33:22,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:33:22,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:33:22,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:33:22,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:33:22,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:33:22,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:33:22,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:33:22,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:33:22,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:33:22,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:33:22,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:33:22,171 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:33:22,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:33:22,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:33:22,171 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:33:22,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:33:22,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:33:22,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:33:22,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:33:22,399 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:33:22,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i [2024-06-28 04:33:23,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:33:23,606 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:33:23,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_power.opt.i [2024-06-28 04:33:23,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa472aa2f/e86069f8d704474abc73dfbb88f5cd06/FLAGab1a837f1 [2024-06-28 04:33:23,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa472aa2f/e86069f8d704474abc73dfbb88f5cd06 [2024-06-28 04:33:23,643 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:33:23,644 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:33:23,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.opt.yml/witness.yml [2024-06-28 04:33:23,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:33:23,813 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:33:23,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:33:23,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:33:23,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:33:23,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:33:23" (1/2) ... [2024-06-28 04:33:23,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19675478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:33:23, skipping insertion in model container [2024-06-28 04:33:23,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:33:23" (1/2) ... [2024-06-28 04:33:23,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2aa7bd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:33:23, skipping insertion in model container [2024-06-28 04:33:23,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:23" (2/2) ... [2024-06-28 04:33:23,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19675478 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:23, skipping insertion in model container [2024-06-28 04:33:23,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:23" (2/2) ... [2024-06-28 04:33:23,821 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:33:23,978 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:33:23,980 INFO L97 edCorrectnessWitness]: Location invariant before [L883-L883] (((((((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff0_thd1 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || __unbuffered_p3_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p3_EAX$flush_delayed == (_Bool)0) && __unbuffered_p3_EAX$mem_tmp == 0) && __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p3_EAX$w_buff0 == 0) && __unbuffered_p3_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p3_EAX$w_buff1 == 0) && __unbuffered_p3_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd4 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd4 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1)))) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$mem_tmp == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p3_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 04:33:23,980 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] (((((((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff0_thd1 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || __unbuffered_p3_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p3_EAX$flush_delayed == (_Bool)0) && __unbuffered_p3_EAX$mem_tmp == 0) && __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p3_EAX$w_buff0 == 0) && __unbuffered_p3_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p3_EAX$w_buff1 == 0) && __unbuffered_p3_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd4 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd4 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1)))) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$mem_tmp == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p3_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 04:33:23,980 INFO L97 edCorrectnessWitness]: Location invariant before [L882-L882] (((((((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff0_thd1 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || __unbuffered_p3_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p3_EAX$flush_delayed == (_Bool)0) && __unbuffered_p3_EAX$mem_tmp == 0) && __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p3_EAX$w_buff0 == 0) && __unbuffered_p3_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p3_EAX$w_buff1 == 0) && __unbuffered_p3_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd4 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd4 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1)))) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$mem_tmp == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p3_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 04:33:23,980 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] (((((((((((((((((((((((((((((((((((((((! multithreaded || z$r_buff0_thd1 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || __unbuffered_p3_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p3_EAX$flush_delayed == (_Bool)0) && __unbuffered_p3_EAX$mem_tmp == 0) && __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p3_EAX$w_buff0 == 0) && __unbuffered_p3_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p3_EAX$w_buff1 == 0) && __unbuffered_p3_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd4 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd4 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1)))) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$mem_tmp == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p3_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p3_EAX$read_delayed_var == 0 || (__unbuffered_p3_EAX$read_delayed_var == & z && (*__unbuffered_p3_EAX$read_delayed_var == 0 || *__unbuffered_p3_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p3_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p3_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p3_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 04:33:23,981 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:33:23,981 INFO L106 edCorrectnessWitness]: ghost_update [L876-L876] multithreaded = 1; [2024-06-28 04:33:24,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:33:24,374 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:33:24,382 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:33:24,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:33:24,618 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:33:24,618 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24 WrapperNode [2024-06-28 04:33:24,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:33:24,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:33:24,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:33:24,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:33:24,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,671 INFO L138 Inliner]: procedures = 176, calls = 101, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 295 [2024-06-28 04:33:24,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:33:24,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:33:24,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:33:24,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:33:24,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,734 INFO L175 MemorySlicer]: Split 50 memory accesses to 2 slices as follows [2, 48]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 04:33:24,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:33:24,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:33:24,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:33:24,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:33:24,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (1/1) ... [2024-06-28 04:33:24,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:33:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:33:24,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:33:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:33:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:33:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:33:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:33:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:33:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:33:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:33:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:33:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:33:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:33:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:33:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:33:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:33:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:33:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:33:24,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:33:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:33:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:33:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:33:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:33:24,870 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:33:25,029 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:33:25,031 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:33:25,567 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:33:25,567 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:33:26,028 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:33:26,028 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:33:26,029 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:33:26 BoogieIcfgContainer [2024-06-28 04:33:26,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:33:26,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:33:26,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:33:26,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:33:26,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:33:23" (1/4) ... [2024-06-28 04:33:26,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b6efc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:33:26, skipping insertion in model container [2024-06-28 04:33:26,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:23" (2/4) ... [2024-06-28 04:33:26,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b6efc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:33:26, skipping insertion in model container [2024-06-28 04:33:26,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:24" (3/4) ... [2024-06-28 04:33:26,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b6efc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:33:26, skipping insertion in model container [2024-06-28 04:33:26,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:33:26" (4/4) ... [2024-06-28 04:33:26,040 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.opt.i [2024-06-28 04:33:26,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:33:26,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:33:26,055 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:33:26,129 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:33:26,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-28 04:33:26,203 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-28 04:33:26,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:33:26,207 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 74 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. [2024-06-28 04:33:26,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-28 04:33:26,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-28 04:33:26,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:33:26,229 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;@262ec411, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:33:26,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:33:26,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:33:26,235 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:33:26,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:33:26,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:26,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:33:26,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:26,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash 881892629, now seen corresponding path program 1 times [2024-06-28 04:33:26,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:26,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684017548] [2024-06-28 04:33:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:26,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:28,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684017548] [2024-06-28 04:33:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684017548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:28,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:33:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360663788] [2024-06-28 04:33:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:33:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:33:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:33:28,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-28 04:33:28,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:28,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:28,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-28 04:33:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:29,552 INFO L124 PetriNetUnfolderBase]: 5078/7078 cut-off events. [2024-06-28 04:33:29,552 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-28 04:33:29,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14301 conditions, 7078 events. 5078/7078 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37823 event pairs, 3622 based on Foata normal form. 1/6978 useless extension candidates. Maximal degree in co-relation 14288. Up to 7001 conditions per place. [2024-06-28 04:33:29,593 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 04:33:29,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 245 flow [2024-06-28 04:33:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:33:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:33:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-28 04:33:29,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-06-28 04:33:29,604 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 97 transitions. [2024-06-28 04:33:29,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 245 flow [2024-06-28 04:33:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:33:29,611 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-28 04:33:29,613 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} [2024-06-28 04:33:29,615 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-28 04:33:29,615 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-28 04:33:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:29,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:33:29,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:29,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash 162609416, now seen corresponding path program 1 times [2024-06-28 04:33:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:29,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431744965] [2024-06-28 04:33:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431744965] [2024-06-28 04:33:31,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431744965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:31,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:31,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:33:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731206082] [2024-06-28 04:33:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:33:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:33:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:33:31,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:33:31,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:31,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:31,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:33:31,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:33,542 INFO L124 PetriNetUnfolderBase]: 8198/11283 cut-off events. [2024-06-28 04:33:33,542 INFO L125 PetriNetUnfolderBase]: For 2074/2086 co-relation queries the response was YES. [2024-06-28 04:33:33,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25896 conditions, 11283 events. 8198/11283 cut-off events. For 2074/2086 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59668 event pairs, 4492 based on Foata normal form. 9/11287 useless extension candidates. Maximal degree in co-relation 25884. Up to 11138 conditions per place. [2024-06-28 04:33:33,607 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 66 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2024-06-28 04:33:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 380 flow [2024-06-28 04:33:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:33:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:33:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 04:33:33,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-28 04:33:33,612 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 123 transitions. [2024-06-28 04:33:33,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 380 flow [2024-06-28 04:33:33,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:33:33,621 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 206 flow [2024-06-28 04:33:33,622 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-28 04:33:33,622 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-06-28 04:33:33,622 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 206 flow [2024-06-28 04:33:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:33,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:33,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:33:33,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:33,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1648871111, now seen corresponding path program 1 times [2024-06-28 04:33:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188558313] [2024-06-28 04:33:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:35,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188558313] [2024-06-28 04:33:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188558313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:35,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:33:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556724828] [2024-06-28 04:33:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:35,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:33:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:33:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:33:35,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:33:35,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:35,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:35,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:33:35,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:37,766 INFO L124 PetriNetUnfolderBase]: 8182/11259 cut-off events. [2024-06-28 04:33:37,766 INFO L125 PetriNetUnfolderBase]: For 5705/5754 co-relation queries the response was YES. [2024-06-28 04:33:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28861 conditions, 11259 events. 8182/11259 cut-off events. For 5705/5754 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59551 event pairs, 3651 based on Foata normal form. 27/11281 useless extension candidates. Maximal degree in co-relation 28846. Up to 11060 conditions per place. [2024-06-28 04:33:37,820 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 75 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2024-06-28 04:33:37,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 480 flow [2024-06-28 04:33:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:33:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:33:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 04:33:37,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 04:33:37,824 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 206 flow. Second operand 5 states and 147 transitions. [2024-06-28 04:33:37,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 480 flow [2024-06-28 04:33:37,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 476 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 04:33:37,830 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 252 flow [2024-06-28 04:33:37,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-28 04:33:37,831 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-28 04:33:37,831 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 252 flow [2024-06-28 04:33:37,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:37,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:37,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:37,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:33:37,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:37,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1841027677, now seen corresponding path program 1 times [2024-06-28 04:33:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:37,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353256416] [2024-06-28 04:33:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:37,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353256416] [2024-06-28 04:33:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353256416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:39,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:33:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136101417] [2024-06-28 04:33:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:33:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:39,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:33:39,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:33:40,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:33:40,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:40,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:40,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:33:40,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:42,184 INFO L124 PetriNetUnfolderBase]: 7742/10653 cut-off events. [2024-06-28 04:33:42,184 INFO L125 PetriNetUnfolderBase]: For 9948/9950 co-relation queries the response was YES. [2024-06-28 04:33:42,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29730 conditions, 10653 events. 7742/10653 cut-off events. For 9948/9950 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 57213 event pairs, 4216 based on Foata normal form. 5/10656 useless extension candidates. Maximal degree in co-relation 29711. Up to 10539 conditions per place. [2024-06-28 04:33:42,255 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 72 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-28 04:33:42,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 534 flow [2024-06-28 04:33:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:33:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:33:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 04:33:42,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:33:42,257 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 252 flow. Second operand 5 states and 125 transitions. [2024-06-28 04:33:42,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 534 flow [2024-06-28 04:33:42,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 498 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 04:33:42,261 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 331 flow [2024-06-28 04:33:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 04:33:42,262 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-06-28 04:33:42,262 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 331 flow [2024-06-28 04:33:42,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:42,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:42,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:42,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:33:42,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:42,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash -476366526, now seen corresponding path program 1 times [2024-06-28 04:33:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994978086] [2024-06-28 04:33:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994978086] [2024-06-28 04:33:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994978086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:44,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:44,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:33:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200655644] [2024-06-28 04:33:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:44,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:33:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:33:44,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:33:44,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:33:44,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 331 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:44,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:44,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:33:44,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:47,484 INFO L124 PetriNetUnfolderBase]: 9515/13112 cut-off events. [2024-06-28 04:33:47,484 INFO L125 PetriNetUnfolderBase]: For 19795/19954 co-relation queries the response was YES. [2024-06-28 04:33:47,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39963 conditions, 13112 events. 9515/13112 cut-off events. For 19795/19954 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 70753 event pairs, 4351 based on Foata normal form. 63/13141 useless extension candidates. Maximal degree in co-relation 39941. Up to 12789 conditions per place. [2024-06-28 04:33:47,545 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 80 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-28 04:33:47,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 713 flow [2024-06-28 04:33:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:33:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:33:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 04:33:47,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 04:33:47,547 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 331 flow. Second operand 6 states and 158 transitions. [2024-06-28 04:33:47,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 713 flow [2024-06-28 04:33:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 703 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 04:33:47,557 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 444 flow [2024-06-28 04:33:47,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-06-28 04:33:47,559 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-28 04:33:47,559 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 444 flow [2024-06-28 04:33:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:47,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:47,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:47,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:33:47,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:47,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2033032928, now seen corresponding path program 2 times [2024-06-28 04:33:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:47,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9257658] [2024-06-28 04:33:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9257658] [2024-06-28 04:33:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9257658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:49,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:33:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567878681] [2024-06-28 04:33:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:33:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:33:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:33:49,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:33:49,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 444 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:49,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:49,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:33:49,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:51,973 INFO L124 PetriNetUnfolderBase]: 9506/13100 cut-off events. [2024-06-28 04:33:51,974 INFO L125 PetriNetUnfolderBase]: For 30755/30937 co-relation queries the response was YES. [2024-06-28 04:33:52,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43712 conditions, 13100 events. 9506/13100 cut-off events. For 30755/30937 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 70801 event pairs, 4351 based on Foata normal form. 72/13140 useless extension candidates. Maximal degree in co-relation 43687. Up to 12799 conditions per place. [2024-06-28 04:33:52,066 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 72 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-06-28 04:33:52,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 698 flow [2024-06-28 04:33:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:33:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:33:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 04:33:52,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2024-06-28 04:33:52,069 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 444 flow. Second operand 5 states and 131 transitions. [2024-06-28 04:33:52,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 698 flow [2024-06-28 04:33:52,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 103 transitions, 653 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 04:33:52,094 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 461 flow [2024-06-28 04:33:52,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-06-28 04:33:52,094 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-06-28 04:33:52,095 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 461 flow [2024-06-28 04:33:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:52,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:33:52,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1029217530, now seen corresponding path program 1 times [2024-06-28 04:33:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850018954] [2024-06-28 04:33:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850018954] [2024-06-28 04:33:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850018954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:54,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:33:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745301211] [2024-06-28 04:33:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:33:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:33:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:33:54,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:33:54,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 461 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:54,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:33:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:56,672 INFO L124 PetriNetUnfolderBase]: 7757/10683 cut-off events. [2024-06-28 04:33:56,672 INFO L125 PetriNetUnfolderBase]: For 28366/28374 co-relation queries the response was YES. [2024-06-28 04:33:56,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36508 conditions, 10683 events. 7757/10683 cut-off events. For 28366/28374 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 57797 event pairs, 3902 based on Foata normal form. 14/10695 useless extension candidates. Maximal degree in co-relation 36481. Up to 10521 conditions per place. [2024-06-28 04:33:56,723 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 90 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2024-06-28 04:33:56,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 112 transitions, 776 flow [2024-06-28 04:33:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:33:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:33:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 04:33:56,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-28 04:33:56,725 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 461 flow. Second operand 6 states and 149 transitions. [2024-06-28 04:33:56,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 112 transitions, 776 flow [2024-06-28 04:33:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 732 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:33:56,739 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 485 flow [2024-06-28 04:33:56,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2024-06-28 04:33:56,740 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-28 04:33:56,740 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 485 flow [2024-06-28 04:33:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:56,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:56,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:33:56,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:33:56,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1882458588, now seen corresponding path program 1 times [2024-06-28 04:33:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007113463] [2024-06-28 04:33:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:59,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007113463] [2024-06-28 04:33:59,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007113463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:59,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:59,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916406975] [2024-06-28 04:33:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:59,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:59,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:59,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:33:59,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 485 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:59,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:59,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:33:59,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:02,245 INFO L124 PetriNetUnfolderBase]: 9864/13516 cut-off events. [2024-06-28 04:34:02,246 INFO L125 PetriNetUnfolderBase]: For 43721/43748 co-relation queries the response was YES. [2024-06-28 04:34:02,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47757 conditions, 13516 events. 9864/13516 cut-off events. For 43721/43748 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 71308 event pairs, 4485 based on Foata normal form. 25/13537 useless extension candidates. Maximal degree in co-relation 47729. Up to 13175 conditions per place. [2024-06-28 04:34:02,328 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 112 selfloop transitions, 28 changer transitions 0/146 dead transitions. [2024-06-28 04:34:02,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 146 transitions, 1055 flow [2024-06-28 04:34:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 04:34:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-28 04:34:02,330 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 485 flow. Second operand 7 states and 178 transitions. [2024-06-28 04:34:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 146 transitions, 1055 flow [2024-06-28 04:34:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 146 transitions, 1013 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:02,352 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 673 flow [2024-06-28 04:34:02,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-06-28 04:34:02,353 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-28 04:34:02,353 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 673 flow [2024-06-28 04:34:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:02,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:02,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:02,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:34:02,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:02,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1400496082, now seen corresponding path program 2 times [2024-06-28 04:34:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66890736] [2024-06-28 04:34:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66890736] [2024-06-28 04:34:04,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66890736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:04,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:04,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251019022] [2024-06-28 04:34:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:04,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:04,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:04,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:04,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 673 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:04,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:04,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:04,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:07,503 INFO L124 PetriNetUnfolderBase]: 9891/13571 cut-off events. [2024-06-28 04:34:07,503 INFO L125 PetriNetUnfolderBase]: For 56906/56965 co-relation queries the response was YES. [2024-06-28 04:34:07,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51333 conditions, 13571 events. 9891/13571 cut-off events. For 56906/56965 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 71692 event pairs, 4457 based on Foata normal form. 50/13619 useless extension candidates. Maximal degree in co-relation 51302. Up to 13241 conditions per place. [2024-06-28 04:34:07,585 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 128 selfloop transitions, 27 changer transitions 0/161 dead transitions. [2024-06-28 04:34:07,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 161 transitions, 1232 flow [2024-06-28 04:34:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 04:34:07,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:34:07,587 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 673 flow. Second operand 8 states and 200 transitions. [2024-06-28 04:34:07,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 161 transitions, 1232 flow [2024-06-28 04:34:07,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 161 transitions, 1176 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:07,626 INFO L231 Difference]: Finished difference. Result has 88 places, 102 transitions, 749 flow [2024-06-28 04:34:07,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=749, PETRI_PLACES=88, PETRI_TRANSITIONS=102} [2024-06-28 04:34:07,627 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-06-28 04:34:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 102 transitions, 749 flow [2024-06-28 04:34:07,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:07,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:07,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:07,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:34:07,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1400490502, now seen corresponding path program 3 times [2024-06-28 04:34:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701222073] [2024-06-28 04:34:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701222073] [2024-06-28 04:34:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701222073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204997591] [2024-06-28 04:34:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:09,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:09,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 749 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:12,513 INFO L124 PetriNetUnfolderBase]: 9882/13551 cut-off events. [2024-06-28 04:34:12,513 INFO L125 PetriNetUnfolderBase]: For 64553/64589 co-relation queries the response was YES. [2024-06-28 04:34:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51929 conditions, 13551 events. 9882/13551 cut-off events. For 64553/64589 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 71395 event pairs, 4485 based on Foata normal form. 33/13580 useless extension candidates. Maximal degree in co-relation 51896. Up to 13232 conditions per place. [2024-06-28 04:34:12,578 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 107 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-28 04:34:12,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 1108 flow [2024-06-28 04:34:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 04:34:12,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-28 04:34:12,581 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 749 flow. Second operand 6 states and 152 transitions. [2024-06-28 04:34:12,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 1108 flow [2024-06-28 04:34:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1014 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:12,632 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 718 flow [2024-06-28 04:34:12,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=718, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2024-06-28 04:34:12,633 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-28 04:34:12,634 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 718 flow [2024-06-28 04:34:12,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:12,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:12,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:12,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:34:12,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:12,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash -977966079, now seen corresponding path program 1 times [2024-06-28 04:34:12,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:12,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465939341] [2024-06-28 04:34:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465939341] [2024-06-28 04:34:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465939341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778926241] [2024-06-28 04:34:14,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:14,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:14,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:34:14,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:14,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:14,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:34:14,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:17,709 INFO L124 PetriNetUnfolderBase]: 9643/13304 cut-off events. [2024-06-28 04:34:17,709 INFO L125 PetriNetUnfolderBase]: For 83341/83428 co-relation queries the response was YES. [2024-06-28 04:34:17,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53082 conditions, 13304 events. 9643/13304 cut-off events. For 83341/83428 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72106 event pairs, 3313 based on Foata normal form. 60/13100 useless extension candidates. Maximal degree in co-relation 53048. Up to 12625 conditions per place. [2024-06-28 04:34:17,800 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 101 selfloop transitions, 42 changer transitions 0/158 dead transitions. [2024-06-28 04:34:17,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 158 transitions, 1248 flow [2024-06-28 04:34:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 04:34:17,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-28 04:34:17,802 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 718 flow. Second operand 7 states and 183 transitions. [2024-06-28 04:34:17,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 158 transitions, 1248 flow [2024-06-28 04:34:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1196 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:17,873 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 830 flow [2024-06-28 04:34:17,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=830, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2024-06-28 04:34:17,874 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-06-28 04:34:17,874 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 830 flow [2024-06-28 04:34:17,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:17,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:17,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:17,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:34:17,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:17,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash -980644479, now seen corresponding path program 2 times [2024-06-28 04:34:17,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687257859] [2024-06-28 04:34:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:20,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687257859] [2024-06-28 04:34:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687257859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:20,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:20,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174235556] [2024-06-28 04:34:20,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:20,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:20,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:20,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:34:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:34:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:23,232 INFO L124 PetriNetUnfolderBase]: 9689/13376 cut-off events. [2024-06-28 04:34:23,236 INFO L125 PetriNetUnfolderBase]: For 102537/102650 co-relation queries the response was YES. [2024-06-28 04:34:23,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56342 conditions, 13376 events. 9689/13376 cut-off events. For 102537/102650 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72531 event pairs, 3938 based on Foata normal form. 54/13158 useless extension candidates. Maximal degree in co-relation 56307. Up to 12830 conditions per place. [2024-06-28 04:34:23,308 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 104 selfloop transitions, 38 changer transitions 0/157 dead transitions. [2024-06-28 04:34:23,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 157 transitions, 1264 flow [2024-06-28 04:34:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 04:34:23,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2024-06-28 04:34:23,310 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 830 flow. Second operand 7 states and 179 transitions. [2024-06-28 04:34:23,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 157 transitions, 1264 flow [2024-06-28 04:34:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 157 transitions, 1192 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:23,384 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 889 flow [2024-06-28 04:34:23,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=889, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2024-06-28 04:34:23,384 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-28 04:34:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 889 flow [2024-06-28 04:34:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:23,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:23,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:34:23,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 465529503, now seen corresponding path program 3 times [2024-06-28 04:34:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:23,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488645951] [2024-06-28 04:34:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:25,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:25,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488645951] [2024-06-28 04:34:25,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488645951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645298446] [2024-06-28 04:34:25,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:25,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:25,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:25,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:25,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:34:25,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 889 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:25,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:25,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:34:25,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:28,370 INFO L124 PetriNetUnfolderBase]: 9666/13343 cut-off events. [2024-06-28 04:34:28,370 INFO L125 PetriNetUnfolderBase]: For 113672/113785 co-relation queries the response was YES. [2024-06-28 04:34:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57281 conditions, 13343 events. 9666/13343 cut-off events. For 113672/113785 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72309 event pairs, 3304 based on Foata normal form. 78/13151 useless extension candidates. Maximal degree in co-relation 57244. Up to 12766 conditions per place. [2024-06-28 04:34:28,470 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 99 selfloop transitions, 34 changer transitions 0/148 dead transitions. [2024-06-28 04:34:28,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 1245 flow [2024-06-28 04:34:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 04:34:28,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 04:34:28,472 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 889 flow. Second operand 6 states and 156 transitions. [2024-06-28 04:34:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 1245 flow [2024-06-28 04:34:28,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 148 transitions, 1146 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:28,575 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 874 flow [2024-06-28 04:34:28,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=874, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-28 04:34:28,576 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-06-28 04:34:28,576 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 874 flow [2024-06-28 04:34:28,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:28,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:28,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:28,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:34:28,577 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:28,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash 800624740, now seen corresponding path program 1 times [2024-06-28 04:34:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193039468] [2024-06-28 04:34:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193039468] [2024-06-28 04:34:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193039468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:30,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:30,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114556141] [2024-06-28 04:34:30,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:30,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:30,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:30,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:30,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 874 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:30,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:30,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:30,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:32,790 INFO L124 PetriNetUnfolderBase]: 7463/10428 cut-off events. [2024-06-28 04:34:32,791 INFO L125 PetriNetUnfolderBase]: For 92535/92572 co-relation queries the response was YES. [2024-06-28 04:34:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45506 conditions, 10428 events. 7463/10428 cut-off events. For 92535/92572 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 56838 event pairs, 3495 based on Foata normal form. 39/10440 useless extension candidates. Maximal degree in co-relation 45468. Up to 10152 conditions per place. [2024-06-28 04:34:32,871 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 103 selfloop transitions, 18 changer transitions 0/133 dead transitions. [2024-06-28 04:34:32,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 1196 flow [2024-06-28 04:34:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:34:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:34:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 04:34:32,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 04:34:32,872 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 874 flow. Second operand 5 states and 124 transitions. [2024-06-28 04:34:32,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 1196 flow [2024-06-28 04:34:32,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 1117 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:32,947 INFO L231 Difference]: Finished difference. Result has 96 places, 115 transitions, 885 flow [2024-06-28 04:34:32,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=885, PETRI_PLACES=96, PETRI_TRANSITIONS=115} [2024-06-28 04:34:32,947 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-06-28 04:34:32,947 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 115 transitions, 885 flow [2024-06-28 04:34:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:34:32,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:32,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash -950131451, now seen corresponding path program 1 times [2024-06-28 04:34:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174985466] [2024-06-28 04:34:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:35,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174985466] [2024-06-28 04:34:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174985466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:35,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612439168] [2024-06-28 04:34:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:36,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 115 transitions, 885 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:36,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:38,861 INFO L124 PetriNetUnfolderBase]: 10242/14115 cut-off events. [2024-06-28 04:34:38,861 INFO L125 PetriNetUnfolderBase]: For 135309/135345 co-relation queries the response was YES. [2024-06-28 04:34:38,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62639 conditions, 14115 events. 10242/14115 cut-off events. For 135309/135345 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 75320 event pairs, 3004 based on Foata normal form. 48/14159 useless extension candidates. Maximal degree in co-relation 62600. Up to 13090 conditions per place. [2024-06-28 04:34:38,952 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 146 selfloop transitions, 42 changer transitions 0/194 dead transitions. [2024-06-28 04:34:38,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 194 transitions, 1633 flow [2024-06-28 04:34:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 04:34:38,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-06-28 04:34:38,954 INFO L175 Difference]: Start difference. First operand has 96 places, 115 transitions, 885 flow. Second operand 8 states and 206 transitions. [2024-06-28 04:34:38,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 194 transitions, 1633 flow [2024-06-28 04:34:39,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 194 transitions, 1577 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:39,063 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 1064 flow [2024-06-28 04:34:39,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1064, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2024-06-28 04:34:39,065 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-28 04:34:39,065 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 1064 flow [2024-06-28 04:34:39,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:39,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:39,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:39,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:34:39,065 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:39,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -248366267, now seen corresponding path program 2 times [2024-06-28 04:34:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288853963] [2024-06-28 04:34:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:41,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288853963] [2024-06-28 04:34:41,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288853963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:41,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572013246] [2024-06-28 04:34:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:41,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:41,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:41,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:41,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 1064 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:41,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:41,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:41,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:45,424 INFO L124 PetriNetUnfolderBase]: 10398/14371 cut-off events. [2024-06-28 04:34:45,424 INFO L125 PetriNetUnfolderBase]: For 156542/156578 co-relation queries the response was YES. [2024-06-28 04:34:45,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65918 conditions, 14371 events. 10398/14371 cut-off events. For 156542/156578 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 77212 event pairs, 4008 based on Foata normal form. 54/14421 useless extension candidates. Maximal degree in co-relation 65876. Up to 13782 conditions per place. [2024-06-28 04:34:45,517 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 146 selfloop transitions, 35 changer transitions 0/187 dead transitions. [2024-06-28 04:34:45,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 187 transitions, 1613 flow [2024-06-28 04:34:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 04:34:45,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:34:45,519 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 1064 flow. Second operand 8 states and 200 transitions. [2024-06-28 04:34:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 187 transitions, 1613 flow [2024-06-28 04:34:45,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 187 transitions, 1554 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:45,643 INFO L231 Difference]: Finished difference. Result has 108 places, 128 transitions, 1121 flow [2024-06-28 04:34:45,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1121, PETRI_PLACES=108, PETRI_TRANSITIONS=128} [2024-06-28 04:34:45,643 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2024-06-28 04:34:45,648 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 128 transitions, 1121 flow [2024-06-28 04:34:45,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:45,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:45,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:45,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:34:45,649 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:45,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash -248514137, now seen corresponding path program 3 times [2024-06-28 04:34:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271452079] [2024-06-28 04:34:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:45,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:48,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271452079] [2024-06-28 04:34:48,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271452079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:48,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:48,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84696770] [2024-06-28 04:34:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:48,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:48,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:48,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 128 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:48,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:51,343 INFO L124 PetriNetUnfolderBase]: 10510/14543 cut-off events. [2024-06-28 04:34:51,343 INFO L125 PetriNetUnfolderBase]: For 173420/173456 co-relation queries the response was YES. [2024-06-28 04:34:51,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67996 conditions, 14543 events. 10510/14543 cut-off events. For 173420/173456 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 78559 event pairs, 3992 based on Foata normal form. 48/14587 useless extension candidates. Maximal degree in co-relation 67952. Up to 13772 conditions per place. [2024-06-28 04:34:51,462 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 149 selfloop transitions, 39 changer transitions 0/194 dead transitions. [2024-06-28 04:34:51,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 194 transitions, 1714 flow [2024-06-28 04:34:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 04:34:51,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-28 04:34:51,474 INFO L175 Difference]: Start difference. First operand has 108 places, 128 transitions, 1121 flow. Second operand 8 states and 203 transitions. [2024-06-28 04:34:51,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 194 transitions, 1714 flow [2024-06-28 04:34:51,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 194 transitions, 1632 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:34:51,628 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 1192 flow [2024-06-28 04:34:51,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1192, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2024-06-28 04:34:51,629 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-06-28 04:34:51,629 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 1192 flow [2024-06-28 04:34:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:51,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:51,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:34:51,629 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:51,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1552024785, now seen corresponding path program 4 times [2024-06-28 04:34:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905025470] [2024-06-28 04:34:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:54,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905025470] [2024-06-28 04:34:54,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905025470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:54,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:54,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295391681] [2024-06-28 04:34:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:54,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:54,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:34:54,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 1192 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:54,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:54,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:34:54,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:57,688 INFO L124 PetriNetUnfolderBase]: 10666/14787 cut-off events. [2024-06-28 04:34:57,688 INFO L125 PetriNetUnfolderBase]: For 193212/193265 co-relation queries the response was YES. [2024-06-28 04:34:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70350 conditions, 14787 events. 10666/14787 cut-off events. For 193212/193265 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 80263 event pairs, 4028 based on Foata normal form. 68/14853 useless extension candidates. Maximal degree in co-relation 70304. Up to 14228 conditions per place. [2024-06-28 04:34:57,799 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 168 selfloop transitions, 29 changer transitions 0/203 dead transitions. [2024-06-28 04:34:57,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 203 transitions, 1805 flow [2024-06-28 04:34:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:34:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:34:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 04:34:57,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-28 04:34:57,801 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 1192 flow. Second operand 9 states and 222 transitions. [2024-06-28 04:34:57,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 203 transitions, 1805 flow [2024-06-28 04:34:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 203 transitions, 1744 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:58,008 INFO L231 Difference]: Finished difference. Result has 116 places, 134 transitions, 1243 flow [2024-06-28 04:34:58,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1243, PETRI_PLACES=116, PETRI_TRANSITIONS=134} [2024-06-28 04:34:58,008 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2024-06-28 04:34:58,008 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 134 transitions, 1243 flow [2024-06-28 04:34:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:58,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:58,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:58,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:34:58,009 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:58,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1546662405, now seen corresponding path program 5 times [2024-06-28 04:34:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117119236] [2024-06-28 04:34:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:00,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117119236] [2024-06-28 04:35:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117119236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847551672] [2024-06-28 04:35:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 134 transitions, 1243 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:03,699 INFO L124 PetriNetUnfolderBase]: 10763/14950 cut-off events. [2024-06-28 04:35:03,699 INFO L125 PetriNetUnfolderBase]: For 211638/211674 co-relation queries the response was YES. [2024-06-28 04:35:03,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72234 conditions, 14950 events. 10763/14950 cut-off events. For 211638/211674 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 81456 event pairs, 4083 based on Foata normal form. 54/15000 useless extension candidates. Maximal degree in co-relation 72186. Up to 14379 conditions per place. [2024-06-28 04:35:03,832 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 152 selfloop transitions, 28 changer transitions 0/186 dead transitions. [2024-06-28 04:35:03,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 186 transitions, 1780 flow [2024-06-28 04:35:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 04:35:03,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-28 04:35:03,834 INFO L175 Difference]: Start difference. First operand has 116 places, 134 transitions, 1243 flow. Second operand 7 states and 177 transitions. [2024-06-28 04:35:03,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 186 transitions, 1780 flow [2024-06-28 04:35:04,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 186 transitions, 1704 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:35:04,074 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 1281 flow [2024-06-28 04:35:04,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1281, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2024-06-28 04:35:04,074 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2024-06-28 04:35:04,075 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 1281 flow [2024-06-28 04:35:04,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:04,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:04,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:35:04,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:04,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1546514535, now seen corresponding path program 6 times [2024-06-28 04:35:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801284425] [2024-06-28 04:35:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801284425] [2024-06-28 04:35:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801284425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420830922] [2024-06-28 04:35:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:06,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:06,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:06,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:06,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 1281 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:06,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:06,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:06,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:09,846 INFO L124 PetriNetUnfolderBase]: 10724/14893 cut-off events. [2024-06-28 04:35:09,846 INFO L125 PetriNetUnfolderBase]: For 225722/225758 co-relation queries the response was YES. [2024-06-28 04:35:09,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72489 conditions, 14893 events. 10724/14893 cut-off events. For 225722/225758 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 80944 event pairs, 3340 based on Foata normal form. 48/14937 useless extension candidates. Maximal degree in co-relation 72440. Up to 13894 conditions per place. [2024-06-28 04:35:09,988 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 149 selfloop transitions, 36 changer transitions 0/191 dead transitions. [2024-06-28 04:35:09,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 191 transitions, 1816 flow [2024-06-28 04:35:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 04:35:09,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 04:35:09,990 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 1281 flow. Second operand 7 states and 180 transitions. [2024-06-28 04:35:09,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 191 transitions, 1816 flow [2024-06-28 04:35:10,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 191 transitions, 1728 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:10,275 INFO L231 Difference]: Finished difference. Result has 119 places, 138 transitions, 1313 flow [2024-06-28 04:35:10,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1313, PETRI_PLACES=119, PETRI_TRANSITIONS=138} [2024-06-28 04:35:10,276 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-28 04:35:10,276 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 138 transitions, 1313 flow [2024-06-28 04:35:10,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:10,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:10,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:35:10,276 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:10,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1552239987, now seen corresponding path program 1 times [2024-06-28 04:35:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832457725] [2024-06-28 04:35:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832457725] [2024-06-28 04:35:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832457725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031781731] [2024-06-28 04:35:13,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:13,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:13,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:13,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 138 transitions, 1313 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:13,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:13,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:13,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:16,667 INFO L124 PetriNetUnfolderBase]: 10685/14844 cut-off events. [2024-06-28 04:35:16,667 INFO L125 PetriNetUnfolderBase]: For 240069/240122 co-relation queries the response was YES. [2024-06-28 04:35:16,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72941 conditions, 14844 events. 10685/14844 cut-off events. For 240069/240122 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 80632 event pairs, 3723 based on Foata normal form. 62/14904 useless extension candidates. Maximal degree in co-relation 72890. Up to 13833 conditions per place. [2024-06-28 04:35:16,762 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 170 selfloop transitions, 36 changer transitions 0/212 dead transitions. [2024-06-28 04:35:16,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 212 transitions, 1908 flow [2024-06-28 04:35:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:35:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:35:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 04:35:16,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609053497942387 [2024-06-28 04:35:16,764 INFO L175 Difference]: Start difference. First operand has 119 places, 138 transitions, 1313 flow. Second operand 9 states and 224 transitions. [2024-06-28 04:35:16,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 212 transitions, 1908 flow [2024-06-28 04:35:16,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 212 transitions, 1769 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:16,989 INFO L231 Difference]: Finished difference. Result has 121 places, 139 transitions, 1247 flow [2024-06-28 04:35:16,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=121, PETRI_TRANSITIONS=139} [2024-06-28 04:35:16,989 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-28 04:35:16,989 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 139 transitions, 1247 flow [2024-06-28 04:35:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:16,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:16,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:16,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:35:16,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:16,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash -970096969, now seen corresponding path program 1 times [2024-06-28 04:35:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748020792] [2024-06-28 04:35:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:16,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:19,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748020792] [2024-06-28 04:35:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748020792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:19,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:19,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686258968] [2024-06-28 04:35:19,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:19,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:19,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:19,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:19,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 1247 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:19,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:19,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:19,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:21,909 INFO L124 PetriNetUnfolderBase]: 8188/11587 cut-off events. [2024-06-28 04:35:21,909 INFO L125 PetriNetUnfolderBase]: For 207597/207604 co-relation queries the response was YES. [2024-06-28 04:35:21,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59368 conditions, 11587 events. 8188/11587 cut-off events. For 207597/207604 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65258 event pairs, 3388 based on Foata normal form. 9/11563 useless extension candidates. Maximal degree in co-relation 59317. Up to 11224 conditions per place. [2024-06-28 04:35:22,011 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 131 selfloop transitions, 22 changer transitions 0/166 dead transitions. [2024-06-28 04:35:22,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 166 transitions, 1655 flow [2024-06-28 04:35:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:35:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:35:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 04:35:22,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:35:22,012 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 1247 flow. Second operand 6 states and 144 transitions. [2024-06-28 04:35:22,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 166 transitions, 1655 flow [2024-06-28 04:35:22,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 166 transitions, 1568 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 04:35:22,171 INFO L231 Difference]: Finished difference. Result has 120 places, 143 transitions, 1267 flow [2024-06-28 04:35:22,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1267, PETRI_PLACES=120, PETRI_TRANSITIONS=143} [2024-06-28 04:35:22,172 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-06-28 04:35:22,172 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 143 transitions, 1267 flow [2024-06-28 04:35:22,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:22,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:22,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:22,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:35:22,172 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:22,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:22,173 INFO L85 PathProgramCache]: Analyzing trace with hash 414971117, now seen corresponding path program 1 times [2024-06-28 04:35:22,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:22,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307094665] [2024-06-28 04:35:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:22,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:24,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307094665] [2024-06-28 04:35:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307094665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:24,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:24,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:35:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556315356] [2024-06-28 04:35:24,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:24,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:35:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:35:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:35:24,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:35:24,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 1267 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:24,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:24,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:35:24,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:26,991 INFO L124 PetriNetUnfolderBase]: 8624/12073 cut-off events. [2024-06-28 04:35:26,992 INFO L125 PetriNetUnfolderBase]: For 225772/225798 co-relation queries the response was YES. [2024-06-28 04:35:27,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63625 conditions, 12073 events. 8624/12073 cut-off events. For 225772/225798 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67133 event pairs, 3391 based on Foata normal form. 20/12091 useless extension candidates. Maximal degree in co-relation 63573. Up to 11819 conditions per place. [2024-06-28 04:35:27,094 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 147 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2024-06-28 04:35:27,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 180 transitions, 1883 flow [2024-06-28 04:35:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:35:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:35:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 04:35:27,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 04:35:27,096 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 1267 flow. Second operand 6 states and 147 transitions. [2024-06-28 04:35:27,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 180 transitions, 1883 flow [2024-06-28 04:35:27,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 1808 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:27,322 INFO L231 Difference]: Finished difference. Result has 122 places, 151 transitions, 1373 flow [2024-06-28 04:35:27,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1373, PETRI_PLACES=122, PETRI_TRANSITIONS=151} [2024-06-28 04:35:27,322 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 65 predicate places. [2024-06-28 04:35:27,322 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 151 transitions, 1373 flow [2024-06-28 04:35:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:27,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:27,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:27,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:35:27,323 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1255160393, now seen corresponding path program 2 times [2024-06-28 04:35:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900954521] [2024-06-28 04:35:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:29,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:29,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900954521] [2024-06-28 04:35:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900954521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:29,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:29,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:35:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448189365] [2024-06-28 04:35:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:29,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:35:29,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:35:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:35:29,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:35:29,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 151 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:29,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:29,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:35:29,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:32,112 INFO L124 PetriNetUnfolderBase]: 8617/12064 cut-off events. [2024-06-28 04:35:32,112 INFO L125 PetriNetUnfolderBase]: For 250892/250920 co-relation queries the response was YES. [2024-06-28 04:35:32,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66097 conditions, 12064 events. 8617/12064 cut-off events. For 250892/250920 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67021 event pairs, 3391 based on Foata normal form. 23/12085 useless extension candidates. Maximal degree in co-relation 66044. Up to 11823 conditions per place. [2024-06-28 04:35:32,209 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 144 selfloop transitions, 22 changer transitions 0/173 dead transitions. [2024-06-28 04:35:32,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 173 transitions, 1759 flow [2024-06-28 04:35:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:35:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:35:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 04:35:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:35:32,210 INFO L175 Difference]: Start difference. First operand has 122 places, 151 transitions, 1373 flow. Second operand 5 states and 125 transitions. [2024-06-28 04:35:32,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 173 transitions, 1759 flow [2024-06-28 04:35:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 173 transitions, 1660 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-28 04:35:32,459 INFO L231 Difference]: Finished difference. Result has 125 places, 151 transitions, 1332 flow [2024-06-28 04:35:32,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1332, PETRI_PLACES=125, PETRI_TRANSITIONS=151} [2024-06-28 04:35:32,459 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 68 predicate places. [2024-06-28 04:35:32,459 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 151 transitions, 1332 flow [2024-06-28 04:35:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:32,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:32,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:35:32,460 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:32,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash 601290851, now seen corresponding path program 1 times [2024-06-28 04:35:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535322745] [2024-06-28 04:35:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535322745] [2024-06-28 04:35:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535322745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:35,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887380945] [2024-06-28 04:35:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:36,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:36,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 151 transitions, 1332 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:36,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:36,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:38,438 INFO L124 PetriNetUnfolderBase]: 8179/11580 cut-off events. [2024-06-28 04:35:38,438 INFO L125 PetriNetUnfolderBase]: For 268765/268772 co-relation queries the response was YES. [2024-06-28 04:35:38,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64596 conditions, 11580 events. 8179/11580 cut-off events. For 268765/268772 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65110 event pairs, 3323 based on Foata normal form. 13/11560 useless extension candidates. Maximal degree in co-relation 64541. Up to 11168 conditions per place. [2024-06-28 04:35:38,555 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 145 selfloop transitions, 25 changer transitions 0/183 dead transitions. [2024-06-28 04:35:38,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 183 transitions, 1796 flow [2024-06-28 04:35:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 04:35:38,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:35:38,558 INFO L175 Difference]: Start difference. First operand has 125 places, 151 transitions, 1332 flow. Second operand 7 states and 165 transitions. [2024-06-28 04:35:38,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 183 transitions, 1796 flow [2024-06-28 04:35:38,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 183 transitions, 1752 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:38,815 INFO L231 Difference]: Finished difference. Result has 128 places, 154 transitions, 1406 flow [2024-06-28 04:35:38,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=128, PETRI_TRANSITIONS=154} [2024-06-28 04:35:38,816 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2024-06-28 04:35:38,816 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 154 transitions, 1406 flow [2024-06-28 04:35:38,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:38,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:38,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:38,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:35:38,817 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:38,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash 843341463, now seen corresponding path program 1 times [2024-06-28 04:35:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736640201] [2024-06-28 04:35:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:38,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736640201] [2024-06-28 04:35:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736640201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:41,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:41,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729348150] [2024-06-28 04:35:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:41,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:41,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 154 transitions, 1406 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:41,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:41,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:41,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:44,747 INFO L124 PetriNetUnfolderBase]: 10671/14848 cut-off events. [2024-06-28 04:35:44,747 INFO L125 PetriNetUnfolderBase]: For 353647/353697 co-relation queries the response was YES. [2024-06-28 04:35:44,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82531 conditions, 14848 events. 10671/14848 cut-off events. For 353647/353697 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81098 event pairs, 3850 based on Foata normal form. 43/14889 useless extension candidates. Maximal degree in co-relation 82475. Up to 14531 conditions per place. [2024-06-28 04:35:44,879 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 171 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2024-06-28 04:35:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 1992 flow [2024-06-28 04:35:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 04:35:44,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:35:44,880 INFO L175 Difference]: Start difference. First operand has 128 places, 154 transitions, 1406 flow. Second operand 7 states and 163 transitions. [2024-06-28 04:35:44,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 1992 flow [2024-06-28 04:35:45,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1900 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:45,229 INFO L231 Difference]: Finished difference. Result has 131 places, 163 transitions, 1491 flow [2024-06-28 04:35:45,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1491, PETRI_PLACES=131, PETRI_TRANSITIONS=163} [2024-06-28 04:35:45,229 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2024-06-28 04:35:45,229 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 163 transitions, 1491 flow [2024-06-28 04:35:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:45,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:45,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:45,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:35:45,230 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:45,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash 749050513, now seen corresponding path program 2 times [2024-06-28 04:35:45,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514728453] [2024-06-28 04:35:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514728453] [2024-06-28 04:35:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514728453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:47,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:47,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:35:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971351051] [2024-06-28 04:35:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:47,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:35:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:35:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:35:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 163 transitions, 1491 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:50,626 INFO L124 PetriNetUnfolderBase]: 10690/14865 cut-off events. [2024-06-28 04:35:50,626 INFO L125 PetriNetUnfolderBase]: For 380762/380790 co-relation queries the response was YES. [2024-06-28 04:35:50,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85273 conditions, 14865 events. 10690/14865 cut-off events. For 380762/380790 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 80874 event pairs, 3873 based on Foata normal form. 17/14878 useless extension candidates. Maximal degree in co-relation 85215. Up to 14504 conditions per place. [2024-06-28 04:35:50,750 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 164 selfloop transitions, 32 changer transitions 0/202 dead transitions. [2024-06-28 04:35:50,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 202 transitions, 2185 flow [2024-06-28 04:35:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:35:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:35:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 04:35:50,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-28 04:35:50,751 INFO L175 Difference]: Start difference. First operand has 131 places, 163 transitions, 1491 flow. Second operand 6 states and 140 transitions. [2024-06-28 04:35:50,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 202 transitions, 2185 flow [2024-06-28 04:35:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 202 transitions, 2098 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:51,195 INFO L231 Difference]: Finished difference. Result has 134 places, 174 transitions, 1633 flow [2024-06-28 04:35:51,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1633, PETRI_PLACES=134, PETRI_TRANSITIONS=174} [2024-06-28 04:35:51,196 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-06-28 04:35:51,196 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 174 transitions, 1633 flow [2024-06-28 04:35:51,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:51,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:51,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:35:51,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:51,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 749039353, now seen corresponding path program 3 times [2024-06-28 04:35:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:51,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103338051] [2024-06-28 04:35:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:53,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103338051] [2024-06-28 04:35:53,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103338051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:53,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:53,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:53,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14224675] [2024-06-28 04:35:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:53,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:35:53,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 174 transitions, 1633 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:53,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:53,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:35:53,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:56,453 INFO L124 PetriNetUnfolderBase]: 10683/14864 cut-off events. [2024-06-28 04:35:56,454 INFO L125 PetriNetUnfolderBase]: For 412993/413048 co-relation queries the response was YES. [2024-06-28 04:35:56,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88323 conditions, 14864 events. 10683/14864 cut-off events. For 412993/413048 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 80930 event pairs, 3850 based on Foata normal form. 50/14912 useless extension candidates. Maximal degree in co-relation 88263. Up to 14536 conditions per place. [2024-06-28 04:35:56,626 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 175 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-28 04:35:56,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 208 transitions, 2132 flow [2024-06-28 04:35:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:35:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:35:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 04:35:56,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:35:56,628 INFO L175 Difference]: Start difference. First operand has 134 places, 174 transitions, 1633 flow. Second operand 6 states and 144 transitions. [2024-06-28 04:35:56,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 208 transitions, 2132 flow [2024-06-28 04:35:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 208 transitions, 2006 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 04:35:57,264 INFO L231 Difference]: Finished difference. Result has 137 places, 175 transitions, 1588 flow [2024-06-28 04:35:57,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1588, PETRI_PLACES=137, PETRI_TRANSITIONS=175} [2024-06-28 04:35:57,265 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 80 predicate places. [2024-06-28 04:35:57,265 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 175 transitions, 1588 flow [2024-06-28 04:35:57,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:57,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:57,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:57,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:35:57,265 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:57,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2050712285, now seen corresponding path program 1 times [2024-06-28 04:35:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:57,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277218014] [2024-06-28 04:35:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277218014] [2024-06-28 04:35:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277218014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:59,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502488004] [2024-06-28 04:35:59,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:59,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:59,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:35:59,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 175 transitions, 1588 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:59,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:59,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:35:59,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:02,453 INFO L124 PetriNetUnfolderBase]: 8662/12141 cut-off events. [2024-06-28 04:36:02,453 INFO L125 PetriNetUnfolderBase]: For 360335/360360 co-relation queries the response was YES. [2024-06-28 04:36:02,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74458 conditions, 12141 events. 8662/12141 cut-off events. For 360335/360360 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67537 event pairs, 3347 based on Foata normal form. 23/12162 useless extension candidates. Maximal degree in co-relation 74397. Up to 11860 conditions per place. [2024-06-28 04:36:02,550 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 174 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-28 04:36:02,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 211 transitions, 2140 flow [2024-06-28 04:36:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:02,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 04:36:02,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:36:02,551 INFO L175 Difference]: Start difference. First operand has 137 places, 175 transitions, 1588 flow. Second operand 7 states and 165 transitions. [2024-06-28 04:36:02,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 211 transitions, 2140 flow [2024-06-28 04:36:02,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 211 transitions, 2090 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 04:36:02,869 INFO L231 Difference]: Finished difference. Result has 140 places, 179 transitions, 1681 flow [2024-06-28 04:36:02,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1681, PETRI_PLACES=140, PETRI_TRANSITIONS=179} [2024-06-28 04:36:02,870 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 83 predicate places. [2024-06-28 04:36:02,870 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 179 transitions, 1681 flow [2024-06-28 04:36:02,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:02,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:02,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:36:02,871 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:02,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 255273995, now seen corresponding path program 2 times [2024-06-28 04:36:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683224013] [2024-06-28 04:36:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683224013] [2024-06-28 04:36:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683224013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:05,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23146706] [2024-06-28 04:36:05,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:05,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:36:05,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 179 transitions, 1681 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:05,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:36:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:08,000 INFO L124 PetriNetUnfolderBase]: 8681/12166 cut-off events. [2024-06-28 04:36:08,000 INFO L125 PetriNetUnfolderBase]: For 393320/393345 co-relation queries the response was YES. [2024-06-28 04:36:08,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77311 conditions, 12166 events. 8681/12166 cut-off events. For 393320/393345 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67936 event pairs, 3347 based on Foata normal form. 23/12187 useless extension candidates. Maximal degree in co-relation 77249. Up to 11855 conditions per place. [2024-06-28 04:36:08,119 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 177 selfloop transitions, 37 changer transitions 0/221 dead transitions. [2024-06-28 04:36:08,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 221 transitions, 2455 flow [2024-06-28 04:36:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 04:36:08,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-28 04:36:08,120 INFO L175 Difference]: Start difference. First operand has 140 places, 179 transitions, 1681 flow. Second operand 7 states and 169 transitions. [2024-06-28 04:36:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 221 transitions, 2455 flow [2024-06-28 04:36:08,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 221 transitions, 2342 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:08,435 INFO L231 Difference]: Finished difference. Result has 142 places, 187 transitions, 1807 flow [2024-06-28 04:36:08,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1807, PETRI_PLACES=142, PETRI_TRANSITIONS=187} [2024-06-28 04:36:08,436 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 85 predicate places. [2024-06-28 04:36:08,436 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 187 transitions, 1807 flow [2024-06-28 04:36:08,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:08,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:08,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:36:08,437 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:08,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash 255268415, now seen corresponding path program 3 times [2024-06-28 04:36:08,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:08,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022073953] [2024-06-28 04:36:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:08,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022073953] [2024-06-28 04:36:10,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022073953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:10,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:10,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:10,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179235084] [2024-06-28 04:36:10,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:10,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:10,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:36:10,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 187 transitions, 1807 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:10,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:10,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:36:10,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:13,462 INFO L124 PetriNetUnfolderBase]: 8674/12157 cut-off events. [2024-06-28 04:36:13,462 INFO L125 PetriNetUnfolderBase]: For 425841/425866 co-relation queries the response was YES. [2024-06-28 04:36:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79748 conditions, 12157 events. 8674/12157 cut-off events. For 425841/425866 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67940 event pairs, 3347 based on Foata normal form. 23/12178 useless extension candidates. Maximal degree in co-relation 79685. Up to 11887 conditions per place. [2024-06-28 04:36:13,585 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 181 selfloop transitions, 26 changer transitions 0/214 dead transitions. [2024-06-28 04:36:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 214 transitions, 2287 flow [2024-06-28 04:36:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:36:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:36:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 04:36:13,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-28 04:36:13,587 INFO L175 Difference]: Start difference. First operand has 142 places, 187 transitions, 1807 flow. Second operand 6 states and 145 transitions. [2024-06-28 04:36:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 214 transitions, 2287 flow [2024-06-28 04:36:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 214 transitions, 2144 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 04:36:13,906 INFO L231 Difference]: Finished difference. Result has 145 places, 187 transitions, 1725 flow [2024-06-28 04:36:13,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1725, PETRI_PLACES=145, PETRI_TRANSITIONS=187} [2024-06-28 04:36:13,906 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 88 predicate places. [2024-06-28 04:36:13,906 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 187 transitions, 1725 flow [2024-06-28 04:36:13,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:13,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:13,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:13,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:36:13,907 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:13,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1566302136, now seen corresponding path program 1 times [2024-06-28 04:36:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:13,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134570233] [2024-06-28 04:36:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134570233] [2024-06-28 04:36:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134570233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:16,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:36:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320878156] [2024-06-28 04:36:16,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:16,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:36:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:36:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:36:16,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:36:16,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 187 transitions, 1725 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:16,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:16,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:36:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:18,834 INFO L124 PetriNetUnfolderBase]: 7900/11321 cut-off events. [2024-06-28 04:36:18,834 INFO L125 PetriNetUnfolderBase]: For 475747/475807 co-relation queries the response was YES. [2024-06-28 04:36:18,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77878 conditions, 11321 events. 7900/11321 cut-off events. For 475747/475807 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 65348 event pairs, 3171 based on Foata normal form. 4/11065 useless extension candidates. Maximal degree in co-relation 77813. Up to 10661 conditions per place. [2024-06-28 04:36:18,977 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 149 selfloop transitions, 18 changer transitions 0/205 dead transitions. [2024-06-28 04:36:18,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 205 transitions, 2143 flow [2024-06-28 04:36:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:36:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:36:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 04:36:18,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-28 04:36:18,978 INFO L175 Difference]: Start difference. First operand has 145 places, 187 transitions, 1725 flow. Second operand 5 states and 121 transitions. [2024-06-28 04:36:18,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 205 transitions, 2143 flow [2024-06-28 04:36:19,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 205 transitions, 2068 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:19,430 INFO L231 Difference]: Finished difference. Result has 145 places, 191 transitions, 1754 flow [2024-06-28 04:36:19,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1754, PETRI_PLACES=145, PETRI_TRANSITIONS=191} [2024-06-28 04:36:19,430 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 88 predicate places. [2024-06-28 04:36:19,430 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 191 transitions, 1754 flow [2024-06-28 04:36:19,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:19,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:19,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:19,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:36:19,431 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:19,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash 373783504, now seen corresponding path program 1 times [2024-06-28 04:36:19,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:19,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481335646] [2024-06-28 04:36:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:19,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:22,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481335646] [2024-06-28 04:36:22,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481335646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:22,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:22,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:22,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716177365] [2024-06-28 04:36:22,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:22,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:22,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:36:22,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 191 transitions, 1754 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:22,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:22,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:36:22,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:25,697 INFO L124 PetriNetUnfolderBase]: 10732/14949 cut-off events. [2024-06-28 04:36:25,697 INFO L125 PetriNetUnfolderBase]: For 566072/566121 co-relation queries the response was YES. [2024-06-28 04:36:25,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98358 conditions, 14949 events. 10732/14949 cut-off events. For 566072/566121 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81876 event pairs, 3788 based on Foata normal form. 45/14992 useless extension candidates. Maximal degree in co-relation 98292. Up to 14603 conditions per place. [2024-06-28 04:36:25,861 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 204 selfloop transitions, 28 changer transitions 0/238 dead transitions. [2024-06-28 04:36:25,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 238 transitions, 2388 flow [2024-06-28 04:36:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 04:36:25,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2024-06-28 04:36:25,864 INFO L175 Difference]: Start difference. First operand has 145 places, 191 transitions, 1754 flow. Second operand 8 states and 182 transitions. [2024-06-28 04:36:25,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 238 transitions, 2388 flow [2024-06-28 04:36:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 238 transitions, 2322 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:36:26,419 INFO L231 Difference]: Finished difference. Result has 150 places, 195 transitions, 1823 flow [2024-06-28 04:36:26,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1823, PETRI_PLACES=150, PETRI_TRANSITIONS=195} [2024-06-28 04:36:26,420 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 93 predicate places. [2024-06-28 04:36:26,420 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 195 transitions, 1823 flow [2024-06-28 04:36:26,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:26,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:26,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:26,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:36:26,420 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:26,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1745743440, now seen corresponding path program 2 times [2024-06-28 04:36:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545873713] [2024-06-28 04:36:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:29,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:29,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545873713] [2024-06-28 04:36:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545873713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417161168] [2024-06-28 04:36:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:29,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:36:29,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 195 transitions, 1823 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:29,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:29,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:36:29,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:32,925 INFO L124 PetriNetUnfolderBase]: 10751/14966 cut-off events. [2024-06-28 04:36:32,925 INFO L125 PetriNetUnfolderBase]: For 601643/601668 co-relation queries the response was YES. [2024-06-28 04:36:33,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101464 conditions, 14966 events. 10751/14966 cut-off events. For 601643/601668 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81843 event pairs, 3811 based on Foata normal form. 17/14979 useless extension candidates. Maximal degree in co-relation 101397. Up to 14520 conditions per place. [2024-06-28 04:36:33,098 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 191 selfloop transitions, 48 changer transitions 0/245 dead transitions. [2024-06-28 04:36:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 245 transitions, 2683 flow [2024-06-28 04:36:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 04:36:33,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:36:33,100 INFO L175 Difference]: Start difference. First operand has 150 places, 195 transitions, 1823 flow. Second operand 8 states and 180 transitions. [2024-06-28 04:36:33,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 245 transitions, 2683 flow [2024-06-28 04:36:33,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 245 transitions, 2578 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 04:36:33,605 INFO L231 Difference]: Finished difference. Result has 153 places, 206 transitions, 2008 flow [2024-06-28 04:36:33,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2008, PETRI_PLACES=153, PETRI_TRANSITIONS=206} [2024-06-28 04:36:33,605 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 96 predicate places. [2024-06-28 04:36:33,605 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 206 transitions, 2008 flow [2024-06-28 04:36:33,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:33,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:33,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:33,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:36:33,606 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:33,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1745385390, now seen corresponding path program 3 times [2024-06-28 04:36:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:33,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501228396] [2024-06-28 04:36:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501228396] [2024-06-28 04:36:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501228396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:37,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:37,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:36:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655330223] [2024-06-28 04:36:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:37,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:36:37,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:36:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:36:37,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:36:37,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 206 transitions, 2008 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:37,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:37,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:36:37,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:40,569 INFO L124 PetriNetUnfolderBase]: 10744/14965 cut-off events. [2024-06-28 04:36:40,569 INFO L125 PetriNetUnfolderBase]: For 641345/641394 co-relation queries the response was YES. [2024-06-28 04:36:40,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104492 conditions, 14965 events. 10744/14965 cut-off events. For 641345/641394 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 81839 event pairs, 3788 based on Foata normal form. 45/15008 useless extension candidates. Maximal degree in co-relation 104423. Up to 14597 conditions per place. [2024-06-28 04:36:40,730 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 204 selfloop transitions, 35 changer transitions 0/245 dead transitions. [2024-06-28 04:36:40,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 245 transitions, 2595 flow [2024-06-28 04:36:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 04:36:40,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:36:40,732 INFO L175 Difference]: Start difference. First operand has 153 places, 206 transitions, 2008 flow. Second operand 7 states and 163 transitions. [2024-06-28 04:36:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 245 transitions, 2595 flow [2024-06-28 04:36:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 245 transitions, 2437 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-28 04:36:41,345 INFO L231 Difference]: Finished difference. Result has 156 places, 207 transitions, 1949 flow [2024-06-28 04:36:41,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1949, PETRI_PLACES=156, PETRI_TRANSITIONS=207} [2024-06-28 04:36:41,346 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 99 predicate places. [2024-06-28 04:36:41,346 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 207 transitions, 1949 flow [2024-06-28 04:36:41,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:41,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:41,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:36:41,346 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:41,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1750578092, now seen corresponding path program 1 times [2024-06-28 04:36:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:41,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892781303] [2024-06-28 04:36:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:44,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:44,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892781303] [2024-06-28 04:36:44,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892781303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:44,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:44,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080128325] [2024-06-28 04:36:44,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:44,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:36:44,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 207 transitions, 1949 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:44,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:44,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:36:44,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:47,421 INFO L124 PetriNetUnfolderBase]: 8721/12238 cut-off events. [2024-06-28 04:36:47,421 INFO L125 PetriNetUnfolderBase]: For 560861/560883 co-relation queries the response was YES. [2024-06-28 04:36:47,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89140 conditions, 12238 events. 8721/12238 cut-off events. For 560861/560883 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68063 event pairs, 3131 based on Foata normal form. 22/12258 useless extension candidates. Maximal degree in co-relation 89069. Up to 11852 conditions per place. [2024-06-28 04:36:47,530 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 212 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-06-28 04:36:47,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 253 transitions, 2835 flow [2024-06-28 04:36:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 04:36:47,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-28 04:36:47,531 INFO L175 Difference]: Start difference. First operand has 156 places, 207 transitions, 1949 flow. Second operand 7 states and 172 transitions. [2024-06-28 04:36:47,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 253 transitions, 2835 flow [2024-06-28 04:36:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 253 transitions, 2769 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:47,853 INFO L231 Difference]: Finished difference. Result has 158 places, 213 transitions, 2125 flow [2024-06-28 04:36:47,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2125, PETRI_PLACES=158, PETRI_TRANSITIONS=213} [2024-06-28 04:36:47,854 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 101 predicate places. [2024-06-28 04:36:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 213 transitions, 2125 flow [2024-06-28 04:36:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:47,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:47,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:47,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:36:47,854 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:47,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1290609270, now seen corresponding path program 2 times [2024-06-28 04:36:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416030402] [2024-06-28 04:36:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:50,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:50,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416030402] [2024-06-28 04:36:50,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416030402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:50,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:50,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734960099] [2024-06-28 04:36:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:50,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:50,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:50,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:36:50,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 213 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:50,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:50,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:36:50,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:53,797 INFO L124 PetriNetUnfolderBase]: 8753/12272 cut-off events. [2024-06-28 04:36:53,797 INFO L125 PetriNetUnfolderBase]: For 599403/599425 co-relation queries the response was YES. [2024-06-28 04:36:53,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91491 conditions, 12272 events. 8753/12272 cut-off events. For 599403/599425 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68421 event pairs, 3289 based on Foata normal form. 22/12292 useless extension candidates. Maximal degree in co-relation 91419. Up to 11974 conditions per place. [2024-06-28 04:36:53,939 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 213 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-28 04:36:53,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 249 transitions, 2775 flow [2024-06-28 04:36:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 04:36:53,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:36:53,941 INFO L175 Difference]: Start difference. First operand has 158 places, 213 transitions, 2125 flow. Second operand 7 states and 165 transitions. [2024-06-28 04:36:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 249 transitions, 2775 flow [2024-06-28 04:36:54,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 249 transitions, 2621 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-28 04:36:54,415 INFO L231 Difference]: Finished difference. Result has 162 places, 216 transitions, 2129 flow [2024-06-28 04:36:54,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2129, PETRI_PLACES=162, PETRI_TRANSITIONS=216} [2024-06-28 04:36:54,416 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 105 predicate places. [2024-06-28 04:36:54,416 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 216 transitions, 2129 flow [2024-06-28 04:36:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:54,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:54,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:36:54,416 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:54,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2037044520, now seen corresponding path program 1 times [2024-06-28 04:36:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598659693] [2024-06-28 04:36:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598659693] [2024-06-28 04:36:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598659693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:57,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172329889] [2024-06-28 04:36:57,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:57,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:57,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:36:57,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 216 transitions, 2129 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:57,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:57,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:36:57,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:00,653 INFO L124 PetriNetUnfolderBase]: 8772/12303 cut-off events. [2024-06-28 04:37:00,653 INFO L125 PetriNetUnfolderBase]: For 625280/625302 co-relation queries the response was YES. [2024-06-28 04:37:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92177 conditions, 12303 events. 8772/12303 cut-off events. For 625280/625302 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68600 event pairs, 3271 based on Foata normal form. 20/12321 useless extension candidates. Maximal degree in co-relation 92103. Up to 11999 conditions per place. [2024-06-28 04:37:00,775 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 216 selfloop transitions, 34 changer transitions 0/257 dead transitions. [2024-06-28 04:37:00,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 257 transitions, 2807 flow [2024-06-28 04:37:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 04:37:00,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2024-06-28 04:37:00,777 INFO L175 Difference]: Start difference. First operand has 162 places, 216 transitions, 2129 flow. Second operand 8 states and 185 transitions. [2024-06-28 04:37:00,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 257 transitions, 2807 flow [2024-06-28 04:37:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 257 transitions, 2705 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:37:01,252 INFO L231 Difference]: Finished difference. Result has 165 places, 220 transitions, 2200 flow [2024-06-28 04:37:01,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2200, PETRI_PLACES=165, PETRI_TRANSITIONS=220} [2024-06-28 04:37:01,252 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 108 predicate places. [2024-06-28 04:37:01,252 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 220 transitions, 2200 flow [2024-06-28 04:37:01,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:01,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:01,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:37:01,252 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:01,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -676616760, now seen corresponding path program 3 times [2024-06-28 04:37:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922660299] [2024-06-28 04:37:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922660299] [2024-06-28 04:37:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922660299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:03,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:37:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847801539] [2024-06-28 04:37:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:37:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:37:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:37:03,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:37:03,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 220 transitions, 2200 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:03,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:03,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:37:03,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:06,673 INFO L124 PetriNetUnfolderBase]: 8760/12291 cut-off events. [2024-06-28 04:37:06,673 INFO L125 PetriNetUnfolderBase]: For 659881/659903 co-relation queries the response was YES. [2024-06-28 04:37:06,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94330 conditions, 12291 events. 8760/12291 cut-off events. For 659881/659903 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68495 event pairs, 3111 based on Foata normal form. 22/12311 useless extension candidates. Maximal degree in co-relation 94255. Up to 11956 conditions per place. [2024-06-28 04:37:06,984 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 217 selfloop transitions, 28 changer transitions 0/252 dead transitions. [2024-06-28 04:37:06,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 252 transitions, 2768 flow [2024-06-28 04:37:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:37:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:37:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 04:37:06,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:37:06,985 INFO L175 Difference]: Start difference. First operand has 165 places, 220 transitions, 2200 flow. Second operand 6 states and 150 transitions. [2024-06-28 04:37:06,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 252 transitions, 2768 flow [2024-06-28 04:37:07,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 252 transitions, 2581 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:07,449 INFO L231 Difference]: Finished difference. Result has 165 places, 220 transitions, 2081 flow [2024-06-28 04:37:07,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2081, PETRI_PLACES=165, PETRI_TRANSITIONS=220} [2024-06-28 04:37:07,449 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 108 predicate places. [2024-06-28 04:37:07,449 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 220 transitions, 2081 flow [2024-06-28 04:37:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:07,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:07,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:07,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:37:07,450 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:07,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash -676611800, now seen corresponding path program 2 times [2024-06-28 04:37:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182228927] [2024-06-28 04:37:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:07,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:10,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182228927] [2024-06-28 04:37:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182228927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:10,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:37:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662692612] [2024-06-28 04:37:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:37:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:37:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:37:10,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:37:10,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 220 transitions, 2081 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:10,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:10,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:37:10,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:13,493 INFO L124 PetriNetUnfolderBase]: 8779/12322 cut-off events. [2024-06-28 04:37:13,493 INFO L125 PetriNetUnfolderBase]: For 686975/686997 co-relation queries the response was YES. [2024-06-28 04:37:13,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95059 conditions, 12322 events. 8779/12322 cut-off events. For 686975/686997 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68820 event pairs, 3269 based on Foata normal form. 20/12340 useless extension candidates. Maximal degree in co-relation 94983. Up to 12019 conditions per place. [2024-06-28 04:37:13,622 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 219 selfloop transitions, 30 changer transitions 0/256 dead transitions. [2024-06-28 04:37:13,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 256 transitions, 2753 flow [2024-06-28 04:37:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:37:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:37:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 04:37:13,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:37:13,630 INFO L175 Difference]: Start difference. First operand has 165 places, 220 transitions, 2081 flow. Second operand 7 states and 165 transitions. [2024-06-28 04:37:13,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 256 transitions, 2753 flow [2024-06-28 04:37:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 256 transitions, 2687 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:37:14,205 INFO L231 Difference]: Finished difference. Result has 167 places, 224 transitions, 2188 flow [2024-06-28 04:37:14,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2188, PETRI_PLACES=167, PETRI_TRANSITIONS=224} [2024-06-28 04:37:14,205 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 110 predicate places. [2024-06-28 04:37:14,205 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 224 transitions, 2188 flow [2024-06-28 04:37:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:37:14,206 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:14,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash -676432310, now seen corresponding path program 3 times [2024-06-28 04:37:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:14,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647630718] [2024-06-28 04:37:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:17,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:17,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647630718] [2024-06-28 04:37:17,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647630718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:17,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:17,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:17,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758386158] [2024-06-28 04:37:17,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:17,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:17,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-28 04:37:17,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 224 transitions, 2188 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:17,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:17,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-28 04:37:17,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:20,652 INFO L124 PetriNetUnfolderBase]: 8772/12313 cut-off events. [2024-06-28 04:37:20,653 INFO L125 PetriNetUnfolderBase]: For 732335/732357 co-relation queries the response was YES. [2024-06-28 04:37:20,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97424 conditions, 12313 events. 8772/12313 cut-off events. For 732335/732357 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 69015 event pairs, 3269 based on Foata normal form. 20/12331 useless extension candidates. Maximal degree in co-relation 97347. Up to 11926 conditions per place. [2024-06-28 04:37:20,767 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 211 selfloop transitions, 52 changer transitions 0/270 dead transitions. [2024-06-28 04:37:20,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 270 transitions, 2920 flow [2024-06-28 04:37:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:37:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:37:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 04:37:20,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43004115226337447 [2024-06-28 04:37:20,769 INFO L175 Difference]: Start difference. First operand has 167 places, 224 transitions, 2188 flow. Second operand 9 states and 209 transitions. [2024-06-28 04:37:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 270 transitions, 2920 flow [2024-06-28 04:37:21,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 270 transitions, 2777 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 04:37:21,244 INFO L231 Difference]: Finished difference. Result has 171 places, 228 transitions, 2271 flow [2024-06-28 04:37:21,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=171, PETRI_TRANSITIONS=228} [2024-06-28 04:37:21,244 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 114 predicate places. [2024-06-28 04:37:21,244 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 228 transitions, 2271 flow [2024-06-28 04:37:21,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:21,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:21,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:21,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:37:21,245 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:21,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1274080888, now seen corresponding path program 1 times [2024-06-28 04:37:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295643912] [2024-06-28 04:37:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:21,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:23,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:23,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295643912] [2024-06-28 04:37:23,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295643912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:23,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:23,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:37:23,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360421182] [2024-06-28 04:37:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:23,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:37:23,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:37:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:37:23,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:23,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 228 transitions, 2271 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:23,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:23,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:23,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:26,920 INFO L124 PetriNetUnfolderBase]: 10009/14199 cut-off events. [2024-06-28 04:37:26,920 INFO L125 PetriNetUnfolderBase]: For 958458/958597 co-relation queries the response was YES. [2024-06-28 04:37:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115201 conditions, 14199 events. 10009/14199 cut-off events. For 958458/958597 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 80598 event pairs, 3502 based on Foata normal form. 11/13949 useless extension candidates. Maximal degree in co-relation 115123. Up to 13289 conditions per place. [2024-06-28 04:37:27,074 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 201 selfloop transitions, 19 changer transitions 0/261 dead transitions. [2024-06-28 04:37:27,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 261 transitions, 2937 flow [2024-06-28 04:37:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:37:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:37:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 04:37:27,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:37:27,076 INFO L175 Difference]: Start difference. First operand has 171 places, 228 transitions, 2271 flow. Second operand 6 states and 135 transitions. [2024-06-28 04:37:27,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 261 transitions, 2937 flow [2024-06-28 04:37:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 261 transitions, 2727 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 04:37:28,047 INFO L231 Difference]: Finished difference. Result has 172 places, 245 transitions, 2342 flow [2024-06-28 04:37:28,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2342, PETRI_PLACES=172, PETRI_TRANSITIONS=245} [2024-06-28 04:37:28,048 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 115 predicate places. [2024-06-28 04:37:28,048 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 245 transitions, 2342 flow [2024-06-28 04:37:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:28,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:28,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:37:28,048 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:28,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1563646920, now seen corresponding path program 1 times [2024-06-28 04:37:28,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924258778] [2024-06-28 04:37:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924258778] [2024-06-28 04:37:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924258778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:31,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:31,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:37:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362674624] [2024-06-28 04:37:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:31,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:37:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:37:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:37:31,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:37:31,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 245 transitions, 2342 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:31,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:31,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:37:31,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:35,447 INFO L124 PetriNetUnfolderBase]: 11135/15531 cut-off events. [2024-06-28 04:37:35,447 INFO L125 PetriNetUnfolderBase]: For 937680/937710 co-relation queries the response was YES. [2024-06-28 04:37:35,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122811 conditions, 15531 events. 11135/15531 cut-off events. For 937680/937710 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 85554 event pairs, 3661 based on Foata normal form. 23/15551 useless extension candidates. Maximal degree in co-relation 122730. Up to 14989 conditions per place. [2024-06-28 04:37:35,615 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 282 selfloop transitions, 52 changer transitions 0/340 dead transitions. [2024-06-28 04:37:35,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 340 transitions, 3642 flow [2024-06-28 04:37:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:37:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:37:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-28 04:37:35,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203703703703704 [2024-06-28 04:37:35,617 INFO L175 Difference]: Start difference. First operand has 172 places, 245 transitions, 2342 flow. Second operand 10 states and 227 transitions. [2024-06-28 04:37:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 340 transitions, 3642 flow [2024-06-28 04:37:36,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 340 transitions, 3612 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-28 04:37:36,376 INFO L231 Difference]: Finished difference. Result has 185 places, 277 transitions, 2931 flow [2024-06-28 04:37:36,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2931, PETRI_PLACES=185, PETRI_TRANSITIONS=277} [2024-06-28 04:37:36,376 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 128 predicate places. [2024-06-28 04:37:36,376 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 277 transitions, 2931 flow [2024-06-28 04:37:36,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:36,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:36,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:36,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:37:36,377 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:36,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash -367817260, now seen corresponding path program 2 times [2024-06-28 04:37:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:36,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824824205] [2024-06-28 04:37:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824824205] [2024-06-28 04:37:39,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824824205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:39,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:39,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:39,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111262443] [2024-06-28 04:37:39,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:39,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:39,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:37:39,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 277 transitions, 2931 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:39,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:39,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:37:39,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:42,896 INFO L124 PetriNetUnfolderBase]: 11527/16099 cut-off events. [2024-06-28 04:37:42,897 INFO L125 PetriNetUnfolderBase]: For 992593/992645 co-relation queries the response was YES. [2024-06-28 04:37:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129590 conditions, 16099 events. 11527/16099 cut-off events. For 992593/992645 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 89293 event pairs, 4126 based on Foata normal form. 51/16149 useless extension candidates. Maximal degree in co-relation 129502. Up to 15377 conditions per place. [2024-06-28 04:37:43,342 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 303 selfloop transitions, 92 changer transitions 0/401 dead transitions. [2024-06-28 04:37:43,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 401 transitions, 4697 flow [2024-06-28 04:37:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:37:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:37:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-28 04:37:43,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-28 04:37:43,348 INFO L175 Difference]: Start difference. First operand has 185 places, 277 transitions, 2931 flow. Second operand 10 states and 242 transitions. [2024-06-28 04:37:43,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 401 transitions, 4697 flow [2024-06-28 04:37:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 401 transitions, 4533 flow, removed 81 selfloop flow, removed 1 redundant places. [2024-06-28 04:37:44,618 INFO L231 Difference]: Finished difference. Result has 198 places, 328 transitions, 3852 flow [2024-06-28 04:37:44,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3852, PETRI_PLACES=198, PETRI_TRANSITIONS=328} [2024-06-28 04:37:44,618 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 141 predicate places. [2024-06-28 04:37:44,618 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 328 transitions, 3852 flow [2024-06-28 04:37:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:44,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:44,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:44,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:37:44,619 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:44,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1607905180, now seen corresponding path program 3 times [2024-06-28 04:37:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:44,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744347927] [2024-06-28 04:37:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744347927] [2024-06-28 04:37:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744347927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:47,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:47,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610681596] [2024-06-28 04:37:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:47,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:47,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:37:47,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 328 transitions, 3852 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:47,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:47,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:37:47,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:51,433 INFO L124 PetriNetUnfolderBase]: 11591/16191 cut-off events. [2024-06-28 04:37:51,433 INFO L125 PetriNetUnfolderBase]: For 1040858/1040941 co-relation queries the response was YES. [2024-06-28 04:37:51,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133490 conditions, 16191 events. 11591/16191 cut-off events. For 1040858/1040941 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 89769 event pairs, 3466 based on Foata normal form. 77/16265 useless extension candidates. Maximal degree in co-relation 133395. Up to 15197 conditions per place. [2024-06-28 04:37:51,636 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 265 selfloop transitions, 111 changer transitions 0/382 dead transitions. [2024-06-28 04:37:51,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 382 transitions, 4878 flow [2024-06-28 04:37:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 04:37:51,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43287037037037035 [2024-06-28 04:37:51,638 INFO L175 Difference]: Start difference. First operand has 198 places, 328 transitions, 3852 flow. Second operand 8 states and 187 transitions. [2024-06-28 04:37:51,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 382 transitions, 4878 flow [2024-06-28 04:37:52,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 382 transitions, 4775 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-28 04:37:52,993 INFO L231 Difference]: Finished difference. Result has 205 places, 335 transitions, 4176 flow [2024-06-28 04:37:52,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3749, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4176, PETRI_PLACES=205, PETRI_TRANSITIONS=335} [2024-06-28 04:37:52,994 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 148 predicate places. [2024-06-28 04:37:52,994 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 335 transitions, 4176 flow [2024-06-28 04:37:52,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:52,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:52,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:52,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:37:52,994 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:52,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -233184072, now seen corresponding path program 4 times [2024-06-28 04:37:52,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:52,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753042930] [2024-06-28 04:37:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:52,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753042930] [2024-06-28 04:37:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753042930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:56,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:37:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565838180] [2024-06-28 04:37:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:37:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:37:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:37:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:37:56,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 335 transitions, 4176 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:56,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:56,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:37:56,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:00,342 INFO L124 PetriNetUnfolderBase]: 11623/16243 cut-off events. [2024-06-28 04:38:00,342 INFO L125 PetriNetUnfolderBase]: For 1088227/1088309 co-relation queries the response was YES. [2024-06-28 04:38:00,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137059 conditions, 16243 events. 11623/16243 cut-off events. For 1088227/1088309 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 90071 event pairs, 4263 based on Foata normal form. 77/16317 useless extension candidates. Maximal degree in co-relation 136961. Up to 15698 conditions per place. [2024-06-28 04:38:00,519 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 303 selfloop transitions, 71 changer transitions 0/380 dead transitions. [2024-06-28 04:38:00,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 380 transitions, 5139 flow [2024-06-28 04:38:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 04:38:00,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2024-06-28 04:38:00,520 INFO L175 Difference]: Start difference. First operand has 205 places, 335 transitions, 4176 flow. Second operand 8 states and 182 transitions. [2024-06-28 04:38:00,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 380 transitions, 5139 flow [2024-06-28 04:38:01,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 380 transitions, 4827 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 04:38:01,885 INFO L231 Difference]: Finished difference. Result has 208 places, 338 transitions, 4112 flow [2024-06-28 04:38:01,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4112, PETRI_PLACES=208, PETRI_TRANSITIONS=338} [2024-06-28 04:38:01,886 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 151 predicate places. [2024-06-28 04:38:01,886 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 338 transitions, 4112 flow [2024-06-28 04:38:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:01,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:01,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:01,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:38:01,886 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash -233510502, now seen corresponding path program 5 times [2024-06-28 04:38:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424428794] [2024-06-28 04:38:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424428794] [2024-06-28 04:38:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424428794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886810665] [2024-06-28 04:38:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:04,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:38:04,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 338 transitions, 4112 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:04,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:04,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:38:04,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:08,972 INFO L124 PetriNetUnfolderBase]: 11763/16435 cut-off events. [2024-06-28 04:38:08,972 INFO L125 PetriNetUnfolderBase]: For 1041133/1041215 co-relation queries the response was YES. [2024-06-28 04:38:09,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135600 conditions, 16435 events. 11763/16435 cut-off events. For 1041133/1041215 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 91150 event pairs, 4255 based on Foata normal form. 77/16509 useless extension candidates. Maximal degree in co-relation 135501. Up to 15789 conditions per place. [2024-06-28 04:38:09,322 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 311 selfloop transitions, 79 changer transitions 0/396 dead transitions. [2024-06-28 04:38:09,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 396 transitions, 5279 flow [2024-06-28 04:38:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 04:38:09,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2024-06-28 04:38:09,323 INFO L175 Difference]: Start difference. First operand has 208 places, 338 transitions, 4112 flow. Second operand 8 states and 182 transitions. [2024-06-28 04:38:09,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 396 transitions, 5279 flow [2024-06-28 04:38:10,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 396 transitions, 5067 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 04:38:10,960 INFO L231 Difference]: Finished difference. Result has 211 places, 353 transitions, 4377 flow [2024-06-28 04:38:10,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3900, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4377, PETRI_PLACES=211, PETRI_TRANSITIONS=353} [2024-06-28 04:38:10,961 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 154 predicate places. [2024-06-28 04:38:10,961 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 353 transitions, 4377 flow [2024-06-28 04:38:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:10,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:10,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:38:10,962 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:10,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash -410669922, now seen corresponding path program 1 times [2024-06-28 04:38:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589590565] [2024-06-28 04:38:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589590565] [2024-06-28 04:38:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589590565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297802689] [2024-06-28 04:38:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:13,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:13,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:38:13,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 353 transitions, 4377 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:13,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:13,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:38:13,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:18,571 INFO L124 PetriNetUnfolderBase]: 11808/16482 cut-off events. [2024-06-28 04:38:18,571 INFO L125 PetriNetUnfolderBase]: For 1076947/1077064 co-relation queries the response was YES. [2024-06-28 04:38:18,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138597 conditions, 16482 events. 11808/16482 cut-off events. For 1076947/1077064 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 91476 event pairs, 4116 based on Foata normal form. 91/16569 useless extension candidates. Maximal degree in co-relation 138496. Up to 15536 conditions per place. [2024-06-28 04:38:18,757 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 298 selfloop transitions, 113 changer transitions 0/417 dead transitions. [2024-06-28 04:38:18,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 417 transitions, 6027 flow [2024-06-28 04:38:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 04:38:18,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:38:18,759 INFO L175 Difference]: Start difference. First operand has 211 places, 353 transitions, 4377 flow. Second operand 8 states and 200 transitions. [2024-06-28 04:38:18,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 417 transitions, 6027 flow [2024-06-28 04:38:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 417 transitions, 5796 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 04:38:19,953 INFO L231 Difference]: Finished difference. Result has 214 places, 365 transitions, 4719 flow [2024-06-28 04:38:19,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4719, PETRI_PLACES=214, PETRI_TRANSITIONS=365} [2024-06-28 04:38:19,956 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 157 predicate places. [2024-06-28 04:38:19,956 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 365 transitions, 4719 flow [2024-06-28 04:38:19,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:19,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:19,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:19,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:38:19,957 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:19,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash -410549766, now seen corresponding path program 1 times [2024-06-28 04:38:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:19,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990273185] [2024-06-28 04:38:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990273185] [2024-06-28 04:38:22,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990273185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:22,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:22,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:22,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904906985] [2024-06-28 04:38:22,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:22,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:22,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:38:22,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 365 transitions, 4719 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:22,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:22,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:38:22,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:27,341 INFO L124 PetriNetUnfolderBase]: 11846/16540 cut-off events. [2024-06-28 04:38:27,341 INFO L125 PetriNetUnfolderBase]: For 1133599/1133735 co-relation queries the response was YES. [2024-06-28 04:38:27,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141889 conditions, 16540 events. 11846/16540 cut-off events. For 1133599/1133735 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 91897 event pairs, 4060 based on Foata normal form. 108/16645 useless extension candidates. Maximal degree in co-relation 141787. Up to 15792 conditions per place. [2024-06-28 04:38:27,522 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 315 selfloop transitions, 95 changer transitions 0/416 dead transitions. [2024-06-28 04:38:27,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 416 transitions, 5812 flow [2024-06-28 04:38:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 04:38:27,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:38:27,523 INFO L175 Difference]: Start difference. First operand has 214 places, 365 transitions, 4719 flow. Second operand 8 states and 189 transitions. [2024-06-28 04:38:27,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 416 transitions, 5812 flow [2024-06-28 04:38:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 416 transitions, 5606 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-28 04:38:28,982 INFO L231 Difference]: Finished difference. Result has 219 places, 373 transitions, 4871 flow [2024-06-28 04:38:28,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4871, PETRI_PLACES=219, PETRI_TRANSITIONS=373} [2024-06-28 04:38:28,982 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 162 predicate places. [2024-06-28 04:38:28,982 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 373 transitions, 4871 flow [2024-06-28 04:38:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:28,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:28,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:28,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:38:28,983 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:28,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -410549952, now seen corresponding path program 2 times [2024-06-28 04:38:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398540975] [2024-06-28 04:38:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398540975] [2024-06-28 04:38:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398540975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415909929] [2024-06-28 04:38:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:31,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:38:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 373 transitions, 4871 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:38:31,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:36,574 INFO L124 PetriNetUnfolderBase]: 11865/16571 cut-off events. [2024-06-28 04:38:36,574 INFO L125 PetriNetUnfolderBase]: For 1187797/1187933 co-relation queries the response was YES. [2024-06-28 04:38:36,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145111 conditions, 16571 events. 11865/16571 cut-off events. For 1187797/1187933 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92182 event pairs, 4060 based on Foata normal form. 108/16676 useless extension candidates. Maximal degree in co-relation 145007. Up to 15817 conditions per place. [2024-06-28 04:38:36,771 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 319 selfloop transitions, 95 changer transitions 0/420 dead transitions. [2024-06-28 04:38:36,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 420 transitions, 5907 flow [2024-06-28 04:38:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 04:38:36,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:38:36,772 INFO L175 Difference]: Start difference. First operand has 219 places, 373 transitions, 4871 flow. Second operand 8 states and 189 transitions. [2024-06-28 04:38:36,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 420 transitions, 5907 flow [2024-06-28 04:38:38,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 420 transitions, 5614 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 04:38:38,707 INFO L231 Difference]: Finished difference. Result has 222 places, 377 transitions, 4871 flow [2024-06-28 04:38:38,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4871, PETRI_PLACES=222, PETRI_TRANSITIONS=377} [2024-06-28 04:38:38,708 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 165 predicate places. [2024-06-28 04:38:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 377 transitions, 4871 flow [2024-06-28 04:38:38,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:38,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:38,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:38,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:38:38,708 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:38,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash -233418246, now seen corresponding path program 2 times [2024-06-28 04:38:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:38,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971782932] [2024-06-28 04:38:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971782932] [2024-06-28 04:38:41,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971782932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:41,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:41,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:41,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455625253] [2024-06-28 04:38:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:41,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-28 04:38:41,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 377 transitions, 4871 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:41,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:41,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-28 04:38:41,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:45,823 INFO L124 PetriNetUnfolderBase]: 11922/16650 cut-off events. [2024-06-28 04:38:45,823 INFO L125 PetriNetUnfolderBase]: For 1231107/1231243 co-relation queries the response was YES. [2024-06-28 04:38:45,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146486 conditions, 16650 events. 11922/16650 cut-off events. For 1231107/1231243 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92542 event pairs, 4050 based on Foata normal form. 108/16755 useless extension candidates. Maximal degree in co-relation 146381. Up to 15882 conditions per place. [2024-06-28 04:38:46,017 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 326 selfloop transitions, 97 changer transitions 0/429 dead transitions. [2024-06-28 04:38:46,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 429 transitions, 6046 flow [2024-06-28 04:38:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:46,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 04:38:46,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2024-06-28 04:38:46,018 INFO L175 Difference]: Start difference. First operand has 222 places, 377 transitions, 4871 flow. Second operand 8 states and 185 transitions. [2024-06-28 04:38:46,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 429 transitions, 6046 flow