./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix013.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/mix013.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/mix013.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix013.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 01:23:08,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:23:08,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:23:08,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:23:08,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:23:08,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:23:08,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:23:08,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:23:08,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:23:08,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:23:08,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:23:08,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:23:08,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:23:08,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:23:08,745 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:23:08,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:23:08,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:23:08,746 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:23:08,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:23:08,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:23:08,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:23:08,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:23:08,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:23:08,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:23:08,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:23:08,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:23:08,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:23:08,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:23:08,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:23:08,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:23:08,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:23:08,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:23:08,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:23:08,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:23:08,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:23:08,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:23:08,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:23:08,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:23:08,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:23:08,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:23:08,759 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:23:08,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:23:08,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:23:08,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:23:09,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:23:09,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:23:09,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:23:09,090 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:23:09,090 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:23:09,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix013.oepc.yml/witness.yml [2024-06-28 01:23:09,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:23:09,312 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:23:09,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-06-28 01:23:10,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:23:10,795 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:23:10,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix013.oepc.i [2024-06-28 01:23:10,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7e6937e/f3c3a96a4d514e8dbdd8a4db353db746/FLAG6b904b4c5 [2024-06-28 01:23:10,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c7e6937e/f3c3a96a4d514e8dbdd8a4db353db746 [2024-06-28 01:23:10,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:23:10,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:23:10,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:23:10,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:23:10,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:23:10,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:23:09" (1/2) ... [2024-06-28 01:23:10,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671d80f7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:23:10, skipping insertion in model container [2024-06-28 01:23:10,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:23:09" (1/2) ... [2024-06-28 01:23:10,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@442539fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:23:10, skipping insertion in model container [2024-06-28 01:23:10,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:23:10" (2/2) ... [2024-06-28 01:23:10,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671d80f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:10, skipping insertion in model container [2024-06-28 01:23:10,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:23:10" (2/2) ... [2024-06-28 01:23:10,845 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:23:10,972 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:23:10,973 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:23:10,973 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:23:10,973 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:23:10,973 INFO L97 edCorrectnessWitness]: Location invariant before [L881-L881] ((((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || ((((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-28 01:23:10,974 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:23:10,974 INFO L106 edCorrectnessWitness]: ghost_update [L874-L874] multithreaded = 1; [2024-06-28 01:23:11,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:23:11,189 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/mix013.oepc.i[945,958] [2024-06-28 01:23:11,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:23:11,395 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:23:11,424 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/mix013.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:23:11,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:23:11,594 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:23:11,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11 WrapperNode [2024-06-28 01:23:11,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:23:11,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:23:11,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:23:11,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:23:11,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,667 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 137 [2024-06-28 01:23:11,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:23:11,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:23:11,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:23:11,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:23:11,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,753 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 01:23:11,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:23:11,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:23:11,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:23:11,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:23:11,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (1/1) ... [2024-06-28 01:23:11,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:23:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:23:11,841 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 01:23:11,866 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 01:23:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:23:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:23:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:23:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:23:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:23:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:23:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:23:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:23:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:23:11,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:23:11,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:23:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:23:11,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:23:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:23:11,894 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 01:23:12,061 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:23:12,063 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:23:12,556 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:23:12,557 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:23:12,734 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:23:12,734 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:23:12,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:23:12 BoogieIcfgContainer [2024-06-28 01:23:12,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:23:12,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:23:12,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:23:12,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:23:12,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:23:09" (1/4) ... [2024-06-28 01:23:12,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d37f4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:23:12, skipping insertion in model container [2024-06-28 01:23:12,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:23:10" (2/4) ... [2024-06-28 01:23:12,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d37f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:23:12, skipping insertion in model container [2024-06-28 01:23:12,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:23:11" (3/4) ... [2024-06-28 01:23:12,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d37f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:23:12, skipping insertion in model container [2024-06-28 01:23:12,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:23:12" (4/4) ... [2024-06-28 01:23:12,745 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.oepc.i [2024-06-28 01:23:12,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:23:12,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:23:12,762 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:23:12,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:23:12,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 01:23:12,924 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-28 01:23:12,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:23:12,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-28 01:23:12,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 01:23:12,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-28 01:23:12,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:23:12,960 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;@3a81a858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:23:12,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:23:12,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:23:12,963 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:23:12,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:23:12,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:12,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:23:12,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 385152244, now seen corresponding path program 1 times [2024-06-28 01:23:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478652999] [2024-06-28 01:23:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:14,185 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 01:23:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:14,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478652999] [2024-06-28 01:23:14,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478652999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:14,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:23:14,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386434266] [2024-06-28 01:23:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:23:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:23:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:23:14,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-28 01:23:14,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:23:14,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:14,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-28 01:23:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:18,287 INFO L124 PetriNetUnfolderBase]: 21343/31868 cut-off events. [2024-06-28 01:23:18,288 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-28 01:23:18,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60632 conditions, 31868 events. 21343/31868 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 227452 event pairs, 17311 based on Foata normal form. 751/30303 useless extension candidates. Maximal degree in co-relation 60619. Up to 28369 conditions per place. [2024-06-28 01:23:18,536 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 51 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-28 01:23:18,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 281 flow [2024-06-28 01:23:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:23:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:23:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-06-28 01:23:18,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-06-28 01:23:18,550 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 123 transitions. [2024-06-28 01:23:18,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 281 flow [2024-06-28 01:23:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:18,561 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-28 01:23:18,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-28 01:23:18,567 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-28 01:23:18,567 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-28 01:23:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:23:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:23:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:23:18,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:18,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 385152899, now seen corresponding path program 1 times [2024-06-28 01:23:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023698660] [2024-06-28 01:23:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:18,664 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 01:23:18,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023698660] [2024-06-28 01:23:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023698660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:23:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760099341] [2024-06-28 01:23:18,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:18,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:23:18,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:23:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:23:18,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-06-28 01:23:18,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 01:23:18,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:18,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-06-28 01:23:18,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,001 INFO L124 PetriNetUnfolderBase]: 5218/9230 cut-off events. [2024-06-28 01:23:20,002 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-28 01:23:20,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 9230 events. 5218/9230 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 74134 event pairs, 3415 based on Foata normal form. 0/8449 useless extension candidates. Maximal degree in co-relation 17511. Up to 6074 conditions per place. [2024-06-28 01:23:20,069 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-06-28 01:23:20,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 297 flow [2024-06-28 01:23:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:23:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:23:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-06-28 01:23:20,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7966101694915254 [2024-06-28 01:23:20,077 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 3 states and 141 transitions. [2024-06-28 01:23:20,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 297 flow [2024-06-28 01:23:20,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:20,081 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 154 flow [2024-06-28 01:23:20,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-28 01:23:20,083 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-28 01:23:20,085 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 154 flow [2024-06-28 01:23:20,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 01:23:20,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:20,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:23:20,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:20,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 764164658, now seen corresponding path program 1 times [2024-06-28 01:23:20,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:20,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923872248] [2024-06-28 01:23:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923872248] [2024-06-28 01:23:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923872248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:20,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:20,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:23:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323086649] [2024-06-28 01:23:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:23:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:23:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:23:21,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-28 01:23:21,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:23:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-28 01:23:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:23,463 INFO L124 PetriNetUnfolderBase]: 17593/26368 cut-off events. [2024-06-28 01:23:23,463 INFO L125 PetriNetUnfolderBase]: For 6461/6461 co-relation queries the response was YES. [2024-06-28 01:23:23,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56574 conditions, 26368 events. 17593/26368 cut-off events. For 6461/6461 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 183490 event pairs, 12193 based on Foata normal form. 4/25571 useless extension candidates. Maximal degree in co-relation 56561. Up to 23421 conditions per place. [2024-06-28 01:23:23,621 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 63 selfloop transitions, 10 changer transitions 2/91 dead transitions. [2024-06-28 01:23:23,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 400 flow [2024-06-28 01:23:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:23:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:23:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-28 01:23:23,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6567796610169492 [2024-06-28 01:23:23,625 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 154 flow. Second operand 4 states and 155 transitions. [2024-06-28 01:23:23,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 400 flow [2024-06-28 01:23:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:23,630 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 235 flow [2024-06-28 01:23:23,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-28 01:23:23,631 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-28 01:23:23,631 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 235 flow [2024-06-28 01:23:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:23:23,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:23,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:23,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:23:23,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:23,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash -77122703, now seen corresponding path program 1 times [2024-06-28 01:23:23,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:23,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338123502] [2024-06-28 01:23:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:23,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:24,993 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 01:23:24,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:24,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338123502] [2024-06-28 01:23:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338123502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:23:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376641987] [2024-06-28 01:23:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:24,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:23:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:23:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:23:25,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-28 01:23:25,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:25,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-28 01:23:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:27,581 INFO L124 PetriNetUnfolderBase]: 18391/25836 cut-off events. [2024-06-28 01:23:27,581 INFO L125 PetriNetUnfolderBase]: For 12738/12738 co-relation queries the response was YES. [2024-06-28 01:23:27,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62555 conditions, 25836 events. 18391/25836 cut-off events. For 12738/12738 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 163541 event pairs, 9778 based on Foata normal form. 4/25649 useless extension candidates. Maximal degree in co-relation 62540. Up to 24423 conditions per place. [2024-06-28 01:23:27,738 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 88 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-28 01:23:27,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 682 flow [2024-06-28 01:23:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-28 01:23:27,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6299435028248588 [2024-06-28 01:23:27,740 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 235 flow. Second operand 6 states and 223 transitions. [2024-06-28 01:23:27,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 682 flow [2024-06-28 01:23:27,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 658 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:27,748 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 394 flow [2024-06-28 01:23:27,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 01:23:27,749 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-28 01:23:27,750 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 394 flow [2024-06-28 01:23:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:27,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:27,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:23:27,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:27,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1904165082, now seen corresponding path program 1 times [2024-06-28 01:23:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593979106] [2024-06-28 01:23:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593979106] [2024-06-28 01:23:29,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593979106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:29,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70831922] [2024-06-28 01:23:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:29,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:29,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-28 01:23:29,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 394 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 01:23:29,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:29,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-28 01:23:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:31,768 INFO L124 PetriNetUnfolderBase]: 18375/25798 cut-off events. [2024-06-28 01:23:31,768 INFO L125 PetriNetUnfolderBase]: For 27086/27086 co-relation queries the response was YES. [2024-06-28 01:23:31,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69898 conditions, 25798 events. 18375/25798 cut-off events. For 27086/27086 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 163109 event pairs, 8328 based on Foata normal form. 8/25613 useless extension candidates. Maximal degree in co-relation 69879. Up to 24345 conditions per place. [2024-06-28 01:23:31,985 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 98 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-28 01:23:31,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 144 transitions, 828 flow [2024-06-28 01:23:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:23:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:23:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-06-28 01:23:31,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174334140435835 [2024-06-28 01:23:31,993 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 394 flow. Second operand 7 states and 255 transitions. [2024-06-28 01:23:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 144 transitions, 828 flow [2024-06-28 01:23:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 795 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:32,014 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 455 flow [2024-06-28 01:23:32,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-28 01:23:32,017 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-28 01:23:32,017 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 455 flow [2024-06-28 01:23:32,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 01:23:32,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:32,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:23:32,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:32,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 983515665, now seen corresponding path program 1 times [2024-06-28 01:23:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091653679] [2024-06-28 01:23:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:32,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:33,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091653679] [2024-06-28 01:23:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091653679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:33,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:23:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239939879] [2024-06-28 01:23:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:33,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:23:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:23:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:23:33,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:23:33,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:33,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:23:33,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:36,467 INFO L124 PetriNetUnfolderBase]: 25854/38720 cut-off events. [2024-06-28 01:23:36,467 INFO L125 PetriNetUnfolderBase]: For 53844/53844 co-relation queries the response was YES. [2024-06-28 01:23:36,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104019 conditions, 38720 events. 25854/38720 cut-off events. For 53844/53844 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 276428 event pairs, 14622 based on Foata normal form. 3/37821 useless extension candidates. Maximal degree in co-relation 103997. Up to 34242 conditions per place. [2024-06-28 01:23:36,785 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 84 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-28 01:23:36,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 737 flow [2024-06-28 01:23:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:23:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:23:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 01:23:36,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2024-06-28 01:23:36,787 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 455 flow. Second operand 5 states and 155 transitions. [2024-06-28 01:23:36,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 737 flow [2024-06-28 01:23:36,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 661 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:36,805 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 453 flow [2024-06-28 01:23:36,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-28 01:23:36,806 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-06-28 01:23:36,806 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 453 flow [2024-06-28 01:23:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:36,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:36,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:23:36,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 404553526, now seen corresponding path program 1 times [2024-06-28 01:23:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022254259] [2024-06-28 01:23:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:38,141 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 01:23:38,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:38,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022254259] [2024-06-28 01:23:38,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022254259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:38,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:38,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086930757] [2024-06-28 01:23:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:38,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:38,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:23:38,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:38,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:38,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:23:38,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:42,562 INFO L124 PetriNetUnfolderBase]: 25836/38688 cut-off events. [2024-06-28 01:23:42,563 INFO L125 PetriNetUnfolderBase]: For 73910/73910 co-relation queries the response was YES. [2024-06-28 01:23:42,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110456 conditions, 38688 events. 25836/38688 cut-off events. For 73910/73910 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 276023 event pairs, 14084 based on Foata normal form. 6/37792 useless extension candidates. Maximal degree in co-relation 110432. Up to 34172 conditions per place. [2024-06-28 01:23:42,771 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 96 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2024-06-28 01:23:42,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 803 flow [2024-06-28 01:23:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-28 01:23:42,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282485875706214 [2024-06-28 01:23:42,775 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 453 flow. Second operand 6 states and 187 transitions. [2024-06-28 01:23:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 803 flow [2024-06-28 01:23:42,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 763 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:42,795 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 500 flow [2024-06-28 01:23:42,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-28 01:23:42,797 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-06-28 01:23:42,797 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 500 flow [2024-06-28 01:23:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:42,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:23:42,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:42,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash -350386885, now seen corresponding path program 1 times [2024-06-28 01:23:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753798305] [2024-06-28 01:23:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:44,086 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 01:23:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:44,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753798305] [2024-06-28 01:23:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753798305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:44,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:44,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711892328] [2024-06-28 01:23:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:44,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:23:44,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:44,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:44,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:23:44,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:47,914 INFO L124 PetriNetUnfolderBase]: 25881/38685 cut-off events. [2024-06-28 01:23:47,914 INFO L125 PetriNetUnfolderBase]: For 95515/95525 co-relation queries the response was YES. [2024-06-28 01:23:48,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117488 conditions, 38685 events. 25881/38685 cut-off events. For 95515/95525 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 271631 event pairs, 13160 based on Foata normal form. 11/37643 useless extension candidates. Maximal degree in co-relation 117463. Up to 34209 conditions per place. [2024-06-28 01:23:48,130 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 109 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-06-28 01:23:48,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1007 flow [2024-06-28 01:23:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-28 01:23:48,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451977401129944 [2024-06-28 01:23:48,132 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 500 flow. Second operand 6 states and 193 transitions. [2024-06-28 01:23:48,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1007 flow [2024-06-28 01:23:48,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 945 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:48,152 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 642 flow [2024-06-28 01:23:48,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=642, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-06-28 01:23:48,153 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-06-28 01:23:48,153 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 642 flow [2024-06-28 01:23:48,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:48,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:48,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:48,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:23:48,154 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:48,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 286329245, now seen corresponding path program 2 times [2024-06-28 01:23:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:48,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428294384] [2024-06-28 01:23:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:48,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,396 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 01:23:49,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428294384] [2024-06-28 01:23:49,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428294384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:23:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291927089] [2024-06-28 01:23:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:23:49,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:23:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:23:49,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:23:49,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:49,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:23:49,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:53,796 INFO L124 PetriNetUnfolderBase]: 25872/38819 cut-off events. [2024-06-28 01:23:53,796 INFO L125 PetriNetUnfolderBase]: For 127214/127214 co-relation queries the response was YES. [2024-06-28 01:23:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125439 conditions, 38819 events. 25872/38819 cut-off events. For 127214/127214 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 277807 event pairs, 14057 based on Foata normal form. 3/37919 useless extension candidates. Maximal degree in co-relation 125411. Up to 34250 conditions per place. [2024-06-28 01:23:54,039 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 108 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-28 01:23:54,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 972 flow [2024-06-28 01:23:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:23:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:23:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-28 01:23:54,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519774011299435 [2024-06-28 01:23:54,041 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 642 flow. Second operand 6 states and 184 transitions. [2024-06-28 01:23:54,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 972 flow [2024-06-28 01:23:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 924 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 01:23:54,090 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 637 flow [2024-06-28 01:23:54,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2024-06-28 01:23:54,091 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2024-06-28 01:23:54,091 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 637 flow [2024-06-28 01:23:54,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:23:54,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:54,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:23:54,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:23:54,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2022789340, now seen corresponding path program 1 times [2024-06-28 01:23:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488152619] [2024-06-28 01:23:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:55,589 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 01:23:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488152619] [2024-06-28 01:23:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488152619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:55,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:23:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578864054] [2024-06-28 01:23:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:23:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:23:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:23:55,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:23:55,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:23:55,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:55,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:23:55,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:00,264 INFO L124 PetriNetUnfolderBase]: 25988/38842 cut-off events. [2024-06-28 01:24:00,264 INFO L125 PetriNetUnfolderBase]: For 135082/135082 co-relation queries the response was YES. [2024-06-28 01:24:00,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127326 conditions, 38842 events. 25988/38842 cut-off events. For 135082/135082 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 272827 event pairs, 12901 based on Foata normal form. 3/37790 useless extension candidates. Maximal degree in co-relation 127295. Up to 34373 conditions per place. [2024-06-28 01:24:00,694 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 131 selfloop transitions, 21 changer transitions 0/164 dead transitions. [2024-06-28 01:24:00,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1198 flow [2024-06-28 01:24:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:24:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:24:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2024-06-28 01:24:00,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978813559322034 [2024-06-28 01:24:00,696 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 637 flow. Second operand 8 states and 235 transitions. [2024-06-28 01:24:00,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1198 flow [2024-06-28 01:24:00,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1152 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:24:00,736 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 814 flow [2024-06-28 01:24:00,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-06-28 01:24:00,737 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 32 predicate places. [2024-06-28 01:24:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 814 flow [2024-06-28 01:24:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:24:00,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:00,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:24:00,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:24:00,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 506802286, now seen corresponding path program 2 times [2024-06-28 01:24:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76089142] [2024-06-28 01:24:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:02,048 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 01:24:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76089142] [2024-06-28 01:24:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76089142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:02,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:24:02,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387828978] [2024-06-28 01:24:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:02,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:24:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:02,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:24:02,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:24:02,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 01:24:02,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 814 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 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 01:24:02,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:02,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 01:24:02,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand