./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_tso.oepc.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/mix055_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:41:40,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:41:40,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:41:40,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:41:40,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:41:41,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:41:41,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:41:41,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:41:41,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:41:41,019 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:41:41,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:41:41,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:41:41,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:41:41,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:41:41,022 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:41:41,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:41:41,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:41:41,022 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:41:41,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:41:41,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:41:41,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:41:41,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:41:41,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:41:41,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:41:41,024 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:41:41,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:41:41,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:41:41,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:41:41,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:41:41,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:41:41,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:41:41,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:41:41,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:41,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:41:41,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:41:41,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:41:41,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:41:41,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:41:41,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:41:41,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:41:41,028 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:41:41,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:41:41,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:41:41,029 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:41:41,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:41:41,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:41:41,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:41:41,263 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:41:41,263 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:41:41,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-28 01:41:42,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:41:42,487 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:41:42,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-28 01:41:42,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92887f0b/27e2712e3e1e407eb23ca751a243d1d6/FLAG91e2576c1 [2024-06-28 01:41:42,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92887f0b/27e2712e3e1e407eb23ca751a243d1d6 [2024-06-28 01:41:42,516 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:41:42,522 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:41:42,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_tso.oepc.yml/witness.yml [2024-06-28 01:41:42,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:41:42,703 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:41:42,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:42,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:41:42,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:41:42,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:42" (1/2) ... [2024-06-28 01:41:42,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d6c897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:42" (1/2) ... [2024-06-28 01:41:42,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@218604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/2) ... [2024-06-28 01:41:42,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d6c897 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:42, skipping insertion in model container [2024-06-28 01:41:42,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/2) ... [2024-06-28 01:41:42,713 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:41:42,829 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:41:42,860 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 01:41:42,860 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 01:41:42,860 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 01:41:42,860 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || x$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 01:41:42,861 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:41:42,861 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 01:41:42,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:41:43,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i[949,962] [2024-06-28 01:41:43,195 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:43,205 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:41:43,235 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:41:43,347 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:43,372 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:41:43,372 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:43 WrapperNode [2024-06-28 01:41:43,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:43,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:43,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:41:43,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:41:43,378 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,391 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,420 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2024-06-28 01:41:43,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:43,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:41:43,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:41:43,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:41:43,430 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,430 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,433 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,446 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:41:43,446 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,446 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,455 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,456 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,458 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,459 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:41:43,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:41:43,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:41:43,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:41:43,463 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 01:41:43" (1/1) ... [2024-06-28 01:41:43,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:41:43,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:41:43,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:41:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:41:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:41:43,552 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:41:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:41:43,553 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:41:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:41:43,553 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:41:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:41:43,553 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:41:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:41:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:41:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:41:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:41:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:41:43,557 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:41:43,684 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:41:43,686 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:41:44,111 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:41:44,111 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:41:44,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:41:44,238 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:41:44,239 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:44 BoogieIcfgContainer [2024-06-28 01:41:44,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:41:44,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:41:44,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:41:44,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:41:44,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:41:42" (1/4) ... [2024-06-28 01:41:44,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce6a415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:42" (2/4) ... [2024-06-28 01:41:44,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce6a415 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,246 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 01:41:43" (3/4) ... [2024-06-28 01:41:44,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce6a415 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:41:44, skipping insertion in model container [2024-06-28 01:41:44,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:44" (4/4) ... [2024-06-28 01:41:44,247 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_tso.oepc.i [2024-06-28 01:41:44,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:41:44,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:41:44,261 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:41:44,310 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:41:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 01:41:44,378 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-28 01:41:44,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:44,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-28 01:41:44,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-28 01:41:44,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 53 transitions, 118 flow [2024-06-28 01:41:44,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:41:44,408 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;@24dab6ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:41:44,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:41:44,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:41:44,413 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:41:44,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:44,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:44,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:41:44,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:44,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash 369435318, now seen corresponding path program 1 times [2024-06-28 01:41:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357291749] [2024-06-28 01:41:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:45,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357291749] [2024-06-28 01:41:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357291749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:45,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328404889] [2024-06-28 01:41:45,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:45,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:45,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:41:45,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:45,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:45,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:41:45,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:49,460 INFO L124 PetriNetUnfolderBase]: 29840/43324 cut-off events. [2024-06-28 01:41:49,460 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-28 01:41:49,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83357 conditions, 43324 events. 29840/43324 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 300463 event pairs, 25843 based on Foata normal form. 1081/41458 useless extension candidates. Maximal degree in co-relation 83344. Up to 39493 conditions per place. [2024-06-28 01:41:49,709 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 54 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-28 01:41:49,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 285 flow [2024-06-28 01:41:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:41:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:41:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-28 01:41:49,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:41:49,720 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 118 flow. Second operand 3 states and 114 transitions. [2024-06-28 01:41:49,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 285 flow [2024-06-28 01:41:49,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:49,729 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-28 01:41:49,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-28 01:41:49,734 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-28 01:41:49,734 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-28 01:41:49,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:49,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:49,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:49,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:41:49,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:49,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1454922795, now seen corresponding path program 1 times [2024-06-28 01:41:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:49,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224025926] [2024-06-28 01:41:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:49,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:50,340 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 01:41:50,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224025926] [2024-06-28 01:41:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224025926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:41:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018990605] [2024-06-28 01:41:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:41:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:41:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:41:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-28 01:41:50,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:50,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:50,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-28 01:41:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:54,258 INFO L124 PetriNetUnfolderBase]: 35659/47140 cut-off events. [2024-06-28 01:41:54,258 INFO L125 PetriNetUnfolderBase]: For 6791/6791 co-relation queries the response was YES. [2024-06-28 01:41:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105590 conditions, 47140 events. 35659/47140 cut-off events. For 6791/6791 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 276109 event pairs, 22084 based on Foata normal form. 4/45247 useless extension candidates. Maximal degree in co-relation 105578. Up to 47005 conditions per place. [2024-06-28 01:41:54,477 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 70 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-06-28 01:41:54,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 410 flow [2024-06-28 01:41:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:41:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:41:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-06-28 01:41:54,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2024-06-28 01:41:54,480 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 4 states and 145 transitions. [2024-06-28 01:41:54,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 410 flow [2024-06-28 01:41:54,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:54,482 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 216 flow [2024-06-28 01:41:54,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-28 01:41:54,483 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-06-28 01:41:54,483 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 216 flow [2024-06-28 01:41:54,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:54,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:54,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:54,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:41:54,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:54,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2142034365, now seen corresponding path program 1 times [2024-06-28 01:41:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:54,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894751758] [2024-06-28 01:41:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894751758] [2024-06-28 01:41:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894751758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:55,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:41:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263682686] [2024-06-28 01:41:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:41:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:41:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:41:55,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-28 01:41:55,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:55,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:55,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-28 01:41:55,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:58,733 INFO L124 PetriNetUnfolderBase]: 35633/50975 cut-off events. [2024-06-28 01:41:58,734 INFO L125 PetriNetUnfolderBase]: For 20382/20382 co-relation queries the response was YES. [2024-06-28 01:41:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120173 conditions, 50975 events. 35633/50975 cut-off events. For 20382/20382 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 350069 event pairs, 20815 based on Foata normal form. 8/47797 useless extension candidates. Maximal degree in co-relation 120159. Up to 46930 conditions per place. [2024-06-28 01:41:59,025 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 87 selfloop transitions, 19 changer transitions 0/117 dead transitions. [2024-06-28 01:41:59,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 616 flow [2024-06-28 01:41:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:41:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:41:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-06-28 01:41:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-28 01:41:59,027 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 216 flow. Second operand 5 states and 175 transitions. [2024-06-28 01:41:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 616 flow [2024-06-28 01:41:59,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 570 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:59,032 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 365 flow [2024-06-28 01:41:59,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 01:41:59,033 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-06-28 01:41:59,033 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 365 flow [2024-06-28 01:41:59,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:59,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:59,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:41:59,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:41:59,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2141794256, now seen corresponding path program 1 times [2024-06-28 01:41:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:59,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112891771] [2024-06-28 01:41:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:59,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112891771] [2024-06-28 01:41:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112891771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:59,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579095495] [2024-06-28 01:41:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:59,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:59,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2024-06-28 01:41:59,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:59,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:59,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2024-06-28 01:41:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:00,336 INFO L124 PetriNetUnfolderBase]: 6535/11548 cut-off events. [2024-06-28 01:42:00,336 INFO L125 PetriNetUnfolderBase]: For 5265/6319 co-relation queries the response was YES. [2024-06-28 01:42:00,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25232 conditions, 11548 events. 6535/11548 cut-off events. For 5265/6319 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 97276 event pairs, 3434 based on Foata normal form. 33/10563 useless extension candidates. Maximal degree in co-relation 25215. Up to 7511 conditions per place. [2024-06-28 01:42:00,407 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 45 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-06-28 01:42:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 468 flow [2024-06-28 01:42:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:42:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:42:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-06-28 01:42:00,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2024-06-28 01:42:00,411 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 365 flow. Second operand 3 states and 132 transitions. [2024-06-28 01:42:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 468 flow [2024-06-28 01:42:00,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 456 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:42:00,418 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 324 flow [2024-06-28 01:42:00,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-28 01:42:00,420 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-06-28 01:42:00,420 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 324 flow [2024-06-28 01:42:00,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:00,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:00,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:42:00,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:00,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2122797432, now seen corresponding path program 1 times [2024-06-28 01:42:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990411471] [2024-06-28 01:42:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990411471] [2024-06-28 01:42:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990411471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:01,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:01,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769813383] [2024-06-28 01:42:01,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:01,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:01,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:01,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-28 01:42:01,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:01,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:01,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-28 01:42:01,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:05,340 INFO L124 PetriNetUnfolderBase]: 29369/42155 cut-off events. [2024-06-28 01:42:05,340 INFO L125 PetriNetUnfolderBase]: For 42502/42502 co-relation queries the response was YES. [2024-06-28 01:42:05,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107576 conditions, 42155 events. 29369/42155 cut-off events. For 42502/42502 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 283046 event pairs, 15860 based on Foata normal form. 8/41078 useless extension candidates. Maximal degree in co-relation 107557. Up to 38712 conditions per place. [2024-06-28 01:42:05,598 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 92 selfloop transitions, 20 changer transitions 1/124 dead transitions. [2024-06-28 01:42:05,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 688 flow [2024-06-28 01:42:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-06-28 01:42:05,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818713450292398 [2024-06-28 01:42:05,600 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 324 flow. Second operand 6 states and 199 transitions. [2024-06-28 01:42:05,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 688 flow [2024-06-28 01:42:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:05,613 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 387 flow [2024-06-28 01:42:05,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-06-28 01:42:05,614 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 11 predicate places. [2024-06-28 01:42:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 387 flow [2024-06-28 01:42:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:05,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:05,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:42:05,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:05,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 974930110, now seen corresponding path program 1 times [2024-06-28 01:42:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:05,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685984759] [2024-06-28 01:42:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685984759] [2024-06-28 01:42:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685984759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:06,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:06,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:42:06,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783193256] [2024-06-28 01:42:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:42:06,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:42:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:42:06,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-28 01:42:06,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:06,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:06,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-28 01:42:06,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:09,580 INFO L124 PetriNetUnfolderBase]: 24559/35950 cut-off events. [2024-06-28 01:42:09,581 INFO L125 PetriNetUnfolderBase]: For 46031/46031 co-relation queries the response was YES. [2024-06-28 01:42:09,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96630 conditions, 35950 events. 24559/35950 cut-off events. For 46031/46031 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 243031 event pairs, 15150 based on Foata normal form. 3/35049 useless extension candidates. Maximal degree in co-relation 96609. Up to 32565 conditions per place. [2024-06-28 01:42:09,814 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 88 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2024-06-28 01:42:09,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 109 transitions, 714 flow [2024-06-28 01:42:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:42:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:42:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-28 01:42:09,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-28 01:42:09,816 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 387 flow. Second operand 5 states and 145 transitions. [2024-06-28 01:42:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 109 transitions, 714 flow [2024-06-28 01:42:09,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 651 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:09,837 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 448 flow [2024-06-28 01:42:09,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2024-06-28 01:42:09,838 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-06-28 01:42:09,838 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 448 flow [2024-06-28 01:42:09,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:09,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:09,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:42:09,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:09,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 604783807, now seen corresponding path program 1 times [2024-06-28 01:42:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023853858] [2024-06-28 01:42:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:10,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023853858] [2024-06-28 01:42:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023853858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520310570] [2024-06-28 01:42:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:10,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:10,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-28 01:42:10,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:10,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:10,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-28 01:42:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:14,469 INFO L124 PetriNetUnfolderBase]: 29413/42221 cut-off events. [2024-06-28 01:42:14,470 INFO L125 PetriNetUnfolderBase]: For 76477/76477 co-relation queries the response was YES. [2024-06-28 01:42:14,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121741 conditions, 42221 events. 29413/42221 cut-off events. For 76477/76477 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 280219 event pairs, 18082 based on Foata normal form. 3/41139 useless extension candidates. Maximal degree in co-relation 121717. Up to 38847 conditions per place. [2024-06-28 01:42:14,766 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 105 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2024-06-28 01:42:14,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 849 flow [2024-06-28 01:42:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-28 01:42:14,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:42:14,768 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 448 flow. Second operand 6 states and 171 transitions. [2024-06-28 01:42:14,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 849 flow [2024-06-28 01:42:14,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 824 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:14,789 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 555 flow [2024-06-28 01:42:14,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-06-28 01:42:14,790 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-06-28 01:42:14,790 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 555 flow [2024-06-28 01:42:14,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:14,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:14,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:14,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:42:14,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:42:14,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash -170736683, now seen corresponding path program 2 times [2024-06-28 01:42:14,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:14,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131631055] [2024-06-28 01:42:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:14,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131631055] [2024-06-28 01:42:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131631055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893095654] [2024-06-28 01:42:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:15,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:15,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:15,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-28 01:42:15,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 555 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:15,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:15,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-28 01:42:15,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand