./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix027_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix027_tso.i ./goblint.2024-05-07_14-17-48.files/protection/mix027_tso.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:15:49,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:15:49,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:15:49,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:15:49,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:15:49,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:15:49,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:15:49,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:15:49,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:15:49,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:15:49,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:15:49,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:15:49,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:15:49,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:15:49,628 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:15:49,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:15:49,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:15:49,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:15:49,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:15:49,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:15:49,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:15:49,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:15:49,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:15:49,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:15:49,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:15:49,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:15:49,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:15:49,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:15:49,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:15:49,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:15:49,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:15:49,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:15:49,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:15:49,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:15:49,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:15:49,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:15:49,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:15:49,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:15:49,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:15:49,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:15:49,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:15:49,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:15:49,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:15:49,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:15:49,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:15:49,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:15:49,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:15:49,870 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:15:49,871 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:15:49,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix027_tso.yml/witness.yml [2024-05-12 13:15:50,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:15:50,017 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:15:50,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-05-12 13:15:51,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:15:51,310 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:15:51,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i [2024-05-12 13:15:51,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd159430/4ba04b085bd2496396ab38097c9ba105/FLAG94e421563 [2024-05-12 13:15:51,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd159430/4ba04b085bd2496396ab38097c9ba105 [2024-05-12 13:15:51,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:15:51,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:15:51,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:15:51,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:15:51,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:15:51,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:50" (1/2) ... [2024-05-12 13:15:51,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c3e3e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:15:51, skipping insertion in model container [2024-05-12 13:15:51,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:50" (1/2) ... [2024-05-12 13:15:51,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31efd703 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:15:51, skipping insertion in model container [2024-05-12 13:15:51,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:15:51" (2/2) ... [2024-05-12 13:15:51,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c3e3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:51, skipping insertion in model container [2024-05-12 13:15:51,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:15:51" (2/2) ... [2024-05-12 13:15:51,355 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:15:51,443 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:15:51,444 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:15:51,444 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:15:51,445 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:15:51,445 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-05-12 13:15:51,445 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:15:51,446 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-05-12 13:15:51,483 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:15:51,637 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i[944,957] [2024-05-12 13:15:51,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:15:51,850 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:15:51,876 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:15:51,962 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:15:52,004 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:15:52,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52 WrapperNode [2024-05-12 13:15:52,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:15:52,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:15:52,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:15:52,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:15:52,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,059 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2024-05-12 13:15:52,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:15:52,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:15:52,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:15:52,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:15:52,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,104 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:15:52,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:15:52,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:15:52,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:15:52,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:15:52,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (1/1) ... [2024-05-12 13:15:52,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:15:52,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:15:52,202 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) [2024-05-12 13:15:52,215 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 [2024-05-12 13:15:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:15:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:15:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:15:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:15:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:15:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:15:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:15:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:15:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:15:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:15:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:15:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:15:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:15:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:15:52,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:15:52,250 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:15:52,380 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:15:52,382 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:15:52,799 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:15:52,800 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:15:52,976 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:15:52,976 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:15:52,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:15:52 BoogieIcfgContainer [2024-05-12 13:15:52,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:15:52,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:15:52,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:15:52,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:15:52,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:15:50" (1/4) ... [2024-05-12 13:15:52,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54deef94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:15:52, skipping insertion in model container [2024-05-12 13:15:52,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:15:51" (2/4) ... [2024-05-12 13:15:52,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54deef94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:15:52, skipping insertion in model container [2024-05-12 13:15:52,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:15:52" (3/4) ... [2024-05-12 13:15:52,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54deef94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:15:52, skipping insertion in model container [2024-05-12 13:15:52,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:15:52" (4/4) ... [2024-05-12 13:15:52,984 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_tso.i [2024-05-12 13:15:52,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:15:52,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:15:52,997 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:15:53,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:15:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:15:53,115 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:15:53,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:15:53,118 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 98 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:15:53,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:15:53,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:15:53,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:15:53,140 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;@5f3e453e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:15:53,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:15:53,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:15:53,145 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:15:53,145 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:15:53,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:15:53,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:53,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:53,152 INFO L85 PathProgramCache]: Analyzing trace with hash -766565410, now seen corresponding path program 1 times [2024-05-12 13:15:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985823808] [2024-05-12 13:15:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:54,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985823808] [2024-05-12 13:15:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985823808] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:54,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:15:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662332496] [2024-05-12 13:15:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:54,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:15:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:15:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:15:54,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-05-12 13:15:54,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:54,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:54,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-05-12 13:15:54,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:58,599 INFO L124 PetriNetUnfolderBase]: 29840/43849 cut-off events. [2024-05-12 13:15:58,599 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-05-12 13:15:58,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83884 conditions, 43849 events. 29840/43849 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 310901 event pairs, 25843 based on Foata normal form. 1081/41534 useless extension candidates. Maximal degree in co-relation 83868. Up to 39493 conditions per place. [2024-05-12 13:15:58,827 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 56 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-05-12 13:15:58,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 293 flow [2024-05-12 13:15:58,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:15:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:15:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-05-12 13:15:58,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655367231638418 [2024-05-12 13:15:58,838 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 116 transitions. [2024-05-12 13:15:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 293 flow [2024-05-12 13:15:58,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:15:58,847 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-05-12 13:15:58,848 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} [2024-05-12 13:15:58,851 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:15:58,851 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-05-12 13:15:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:58,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:58,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:15:58,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:15:58,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2065035709, now seen corresponding path program 1 times [2024-05-12 13:15:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214961232] [2024-05-12 13:15:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:59,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214961232] [2024-05-12 13:15:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214961232] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:15:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497712828] [2024-05-12 13:15:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:15:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:15:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:15:59,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:15:59,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:59,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:59,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:15:59,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:04,126 INFO L124 PetriNetUnfolderBase]: 35659/51367 cut-off events. [2024-05-12 13:16:04,126 INFO L125 PetriNetUnfolderBase]: For 7582/7582 co-relation queries the response was YES. [2024-05-12 13:16:04,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109819 conditions, 51367 events. 35659/51367 cut-off events. For 7582/7582 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 354650 event pairs, 28509 based on Foata normal form. 4/48180 useless extension candidates. Maximal degree in co-relation 109804. Up to 47005 conditions per place. [2024-05-12 13:16:04,421 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 72 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-05-12 13:16:04,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 418 flow [2024-05-12 13:16:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:16:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:16:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-05-12 13:16:04,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228813559322034 [2024-05-12 13:16:04,429 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 4 states and 147 transitions. [2024-05-12 13:16:04,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 418 flow [2024-05-12 13:16:04,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:16:04,431 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 220 flow [2024-05-12 13:16:04,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-05-12 13:16:04,432 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-05-12 13:16:04,432 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 220 flow [2024-05-12 13:16:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:04,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:04,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:16:04,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:04,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash -408401781, now seen corresponding path program 1 times [2024-05-12 13:16:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064175074] [2024-05-12 13:16:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:05,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064175074] [2024-05-12 13:16:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064175074] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:05,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:05,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:16:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591451024] [2024-05-12 13:16:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:16:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:16:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:16:05,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:16:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:05,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:05,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:16:05,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:09,522 INFO L124 PetriNetUnfolderBase]: 35633/51332 cut-off events. [2024-05-12 13:16:09,522 INFO L125 PetriNetUnfolderBase]: For 21176/21176 co-relation queries the response was YES. [2024-05-12 13:16:09,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120532 conditions, 51332 events. 35633/51332 cut-off events. For 21176/21176 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 354432 event pairs, 23365 based on Foata normal form. 8/48154 useless extension candidates. Maximal degree in co-relation 120515. Up to 46930 conditions per place. [2024-05-12 13:16:09,828 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 89 selfloop transitions, 19 changer transitions 0/119 dead transitions. [2024-05-12 13:16:09,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 624 flow [2024-05-12 13:16:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:16:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:16:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-05-12 13:16:09,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 13:16:09,831 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 220 flow. Second operand 5 states and 177 transitions. [2024-05-12 13:16:09,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 624 flow [2024-05-12 13:16:09,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 119 transitions, 578 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:16:09,838 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 369 flow [2024-05-12 13:16:09,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2024-05-12 13:16:09,839 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-05-12 13:16:09,839 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 369 flow [2024-05-12 13:16:09,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:09,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:09,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:16:09,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:09,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash -408551559, now seen corresponding path program 1 times [2024-05-12 13:16:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:09,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311019001] [2024-05-12 13:16:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311019001] [2024-05-12 13:16:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311019001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:09,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:09,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:16:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422390696] [2024-05-12 13:16:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:16:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:16:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:16:09,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2024-05-12 13:16:09,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:09,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:09,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2024-05-12 13:16:09,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:11,163 INFO L124 PetriNetUnfolderBase]: 6749/11742 cut-off events. [2024-05-12 13:16:11,163 INFO L125 PetriNetUnfolderBase]: For 5375/6527 co-relation queries the response was YES. [2024-05-12 13:16:11,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25914 conditions, 11742 events. 6749/11742 cut-off events. For 5375/6527 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 97543 event pairs, 3731 based on Foata normal form. 30/10718 useless extension candidates. Maximal degree in co-relation 25894. Up to 7740 conditions per place. [2024-05-12 13:16:11,248 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2024-05-12 13:16:11,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 476 flow [2024-05-12 13:16:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:16:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:16:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-05-12 13:16:11,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7570621468926554 [2024-05-12 13:16:11,251 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 369 flow. Second operand 3 states and 134 transitions. [2024-05-12 13:16:11,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 476 flow [2024-05-12 13:16:11,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 464 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:16:11,257 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 328 flow [2024-05-12 13:16:11,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-05-12 13:16:11,258 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-05-12 13:16:11,259 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 328 flow [2024-05-12 13:16:11,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:11,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:11,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:16:11,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:11,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -747207418, now seen corresponding path program 1 times [2024-05-12 13:16:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803773419] [2024-05-12 13:16:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:12,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803773419] [2024-05-12 13:16:12,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803773419] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:12,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:12,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:16:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869008393] [2024-05-12 13:16:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:16:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:16:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:16:12,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:16:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:16:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:16,175 INFO L124 PetriNetUnfolderBase]: 29369/42714 cut-off events. [2024-05-12 13:16:16,176 INFO L125 PetriNetUnfolderBase]: For 42274/42274 co-relation queries the response was YES. [2024-05-12 13:16:16,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108137 conditions, 42714 events. 29369/42714 cut-off events. For 42274/42274 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 294173 event pairs, 15508 based on Foata normal form. 8/41637 useless extension candidates. Maximal degree in co-relation 108115. Up to 38712 conditions per place. [2024-05-12 13:16:16,778 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 94 selfloop transitions, 20 changer transitions 1/126 dead transitions. [2024-05-12 13:16:16,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 126 transitions, 696 flow [2024-05-12 13:16:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:16:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:16:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-05-12 13:16:16,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-05-12 13:16:16,780 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 328 flow. Second operand 6 states and 201 transitions. [2024-05-12 13:16:16,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 126 transitions, 696 flow [2024-05-12 13:16:16,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 126 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:16:16,788 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 391 flow [2024-05-12 13:16:16,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-05-12 13:16:16,790 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2024-05-12 13:16:16,790 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 391 flow [2024-05-12 13:16:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:16,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:16,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:16,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:16:16,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:16,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1777233401, now seen corresponding path program 1 times [2024-05-12 13:16:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936991593] [2024-05-12 13:16:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:17,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:17,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936991593] [2024-05-12 13:16:17,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936991593] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:17,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:17,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:16:17,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075220114] [2024-05-12 13:16:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:17,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:16:17,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:16:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:16:17,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-05-12 13:16:17,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:17,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:17,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-05-12 13:16:17,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:21,266 INFO L124 PetriNetUnfolderBase]: 24559/36531 cut-off events. [2024-05-12 13:16:21,267 INFO L125 PetriNetUnfolderBase]: For 46391/46391 co-relation queries the response was YES. [2024-05-12 13:16:21,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97212 conditions, 36531 events. 24559/36531 cut-off events. For 46391/46391 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 254856 event pairs, 15150 based on Foata normal form. 3/35212 useless extension candidates. Maximal degree in co-relation 97189. Up to 32565 conditions per place. [2024-05-12 13:16:21,513 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 89 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-05-12 13:16:21,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 720 flow [2024-05-12 13:16:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:16:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:16:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-05-12 13:16:21,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511864406779661 [2024-05-12 13:16:21,515 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 391 flow. Second operand 5 states and 151 transitions. [2024-05-12 13:16:21,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 720 flow [2024-05-12 13:16:21,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 657 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:16:21,530 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 452 flow [2024-05-12 13:16:21,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-05-12 13:16:21,530 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-05-12 13:16:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 452 flow [2024-05-12 13:16:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:21,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:21,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:21,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:16:21,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:21,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1470002854, now seen corresponding path program 1 times [2024-05-12 13:16:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848907473] [2024-05-12 13:16:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:22,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848907473] [2024-05-12 13:16:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848907473] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:22,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:16:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473349326] [2024-05-12 13:16:22,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:16:22,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:16:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:16:22,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-05-12 13:16:22,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:22,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:22,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-05-12 13:16:22,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:26,919 INFO L124 PetriNetUnfolderBase]: 29413/42790 cut-off events. [2024-05-12 13:16:26,919 INFO L125 PetriNetUnfolderBase]: For 76702/76702 co-relation queries the response was YES. [2024-05-12 13:16:27,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122311 conditions, 42790 events. 29413/42790 cut-off events. For 76702/76702 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 291910 event pairs, 18082 based on Foata normal form. 3/41708 useless extension candidates. Maximal degree in co-relation 122285. Up to 38847 conditions per place. [2024-05-12 13:16:27,204 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 106 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-05-12 13:16:27,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 132 transitions, 855 flow [2024-05-12 13:16:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:16:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:16:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-05-12 13:16:27,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-05-12 13:16:27,206 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 452 flow. Second operand 6 states and 178 transitions. [2024-05-12 13:16:27,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 132 transitions, 855 flow [2024-05-12 13:16:27,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 830 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:16:27,236 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 559 flow [2024-05-12 13:16:27,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=559, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2024-05-12 13:16:27,237 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-05-12 13:16:27,238 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 559 flow [2024-05-12 13:16:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:27,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:16:27,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:16:27,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1475746534, now seen corresponding path program 2 times [2024-05-12 13:16:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:27,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835915626] [2024-05-12 13:16:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835915626] [2024-05-12 13:16:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835915626] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:28,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:16:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883262400] [2024-05-12 13:16:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:16:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:16:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:16:28,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-05-12 13:16:28,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:28,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:28,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-05-12 13:16:28,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand