./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix053.opt.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/mix053.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix053.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:26:57,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:26:57,960 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:26:57,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:26:57,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:26:57,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:26:57,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:26:57,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:26:57,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:26:57,994 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:26:57,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:26:57,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:26:57,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:26:57,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:26:57,996 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:26:57,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:26:57,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:26:57,996 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:26:57,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:26:57,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:26:57,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:26:57,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:26:57,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:26:57,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:26:57,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:26:57,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:26:57,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:26:57,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:26:57,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:26:57,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:26:57,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:26:57,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:26:57,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:26:58,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:26:58,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:26:58,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:26:58,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:26:58,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:26:58,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:26:58,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:26:58,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:26:58,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:26:58,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:26:58,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:26:58,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:26:58,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:26:58,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:26:58,229 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:26:58,229 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:26:58,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix053.opt.yml/witness.yml [2024-05-12 13:26:58,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:26:58,393 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:26:58,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-05-12 13:26:59,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:26:59,653 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:26:59,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-05-12 13:26:59,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78545f7e1/2b77f06299a8401ab8d7c6f337ba7deb/FLAG5890c950a [2024-05-12 13:26:59,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78545f7e1/2b77f06299a8401ab8d7c6f337ba7deb [2024-05-12 13:26:59,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:26:59,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:26:59,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:26:59,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:26:59,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:26:59,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:58" (1/2) ... [2024-05-12 13:26:59,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7527ec1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:26:59, skipping insertion in model container [2024-05-12 13:26:59,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:58" (1/2) ... [2024-05-12 13:26:59,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41efd7c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:26:59, skipping insertion in model container [2024-05-12 13:26:59,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:26:59" (2/2) ... [2024-05-12 13:26:59,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7527ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:26:59, skipping insertion in model container [2024-05-12 13:26:59,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:26:59" (2/2) ... [2024-05-12 13:26:59,690 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:26:59,801 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:26:59,802 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-05-12 13:26:59,802 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-05-12 13:26:59,802 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-05-12 13:26:59,802 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-05-12 13:26:59,803 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:26:59,803 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-05-12 13:26:59,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:26:59,955 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/mix053.opt.i[944,957] [2024-05-12 13:27:00,091 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:27:00,102 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:27:00,132 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/mix053.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:27:00,209 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:27:00,251 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:27:00,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00 WrapperNode [2024-05-12 13:27:00,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:27:00,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:27:00,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:27:00,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:27:00,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,308 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-05-12 13:27:00,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:27:00,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:27:00,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:27:00,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:27:00,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,339 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 13:27:00,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:27:00,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:27:00,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:27:00,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:27:00,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (1/1) ... [2024-05-12 13:27:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:27:00,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:27:00,381 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 13:27:00,408 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 13:27:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:27:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:27:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:27:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:27:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:27:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:27:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:27:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:27:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:27:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:27:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:27:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:27:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:27:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:27:00,426 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 13:27:00,576 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:27:00,578 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:27:00,942 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:27:00,943 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:27:01,076 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:27:01,077 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:27:01,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:27:01 BoogieIcfgContainer [2024-05-12 13:27:01,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:27:01,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:27:01,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:27:01,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:27:01,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:26:58" (1/4) ... [2024-05-12 13:27:01,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640846e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:27:01, skipping insertion in model container [2024-05-12 13:27:01,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:26:59" (2/4) ... [2024-05-12 13:27:01,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640846e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:27:01, skipping insertion in model container [2024-05-12 13:27:01,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:27:00" (3/4) ... [2024-05-12 13:27:01,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640846e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:27:01, skipping insertion in model container [2024-05-12 13:27:01,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:27:01" (4/4) ... [2024-05-12 13:27:01,083 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2024-05-12 13:27:01,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:27:01,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:27:01,095 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:27:01,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:27:01,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:27:01,180 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-05-12 13:27:01,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:27:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-05-12 13:27:01,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:27:01,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-05-12 13:27:01,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:27:01,197 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;@4ac85b61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:27:01,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:27:01,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:27:01,200 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:27:01,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:27:01,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:01,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:27:01,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:01,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1651682966, now seen corresponding path program 1 times [2024-05-12 13:27:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117248752] [2024-05-12 13:27:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:27:02,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:02,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117248752] [2024-05-12 13:27:02,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117248752] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:02,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:02,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:27:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040996389] [2024-05-12 13:27:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:27:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:27:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:27:02,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-05-12 13:27:02,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 13:27:02,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:02,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-05-12 13:27:02,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:04,454 INFO L124 PetriNetUnfolderBase]: 17591/24325 cut-off events. [2024-05-12 13:27:04,455 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-05-12 13:27:04,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48103 conditions, 24325 events. 17591/24325 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 147914 event pairs, 11981 based on Foata normal form. 751/23822 useless extension candidates. Maximal degree in co-relation 48087. Up to 23443 conditions per place. [2024-05-12 13:27:04,603 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 52 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-05-12 13:27:04,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 281 flow [2024-05-12 13:27:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:27:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:27:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-05-12 13:27:04,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-05-12 13:27:04,614 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 118 transitions. [2024-05-12 13:27:04,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 281 flow [2024-05-12 13:27:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:27:04,624 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-05-12 13:27:04,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-05-12 13:27:04,629 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-05-12 13:27:04,629 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-05-12 13:27:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 13:27:04,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:27:04,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1870627465, now seen corresponding path program 1 times [2024-05-12 13:27:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154209884] [2024-05-12 13:27:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:04,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:05,357 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 13:27:05,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:05,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154209884] [2024-05-12 13:27:05,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154209884] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:05,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:05,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:27:05,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524166495] [2024-05-12 13:27:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:05,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:27:05,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:27:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:27:05,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:05,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 13:27:05,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:05,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:05,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:07,784 INFO L124 PetriNetUnfolderBase]: 20430/30832 cut-off events. [2024-05-12 13:27:07,784 INFO L125 PetriNetUnfolderBase]: For 4700/4700 co-relation queries the response was YES. [2024-05-12 13:27:07,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65140 conditions, 30832 events. 20430/30832 cut-off events. For 4700/4700 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 219661 event pairs, 15808 based on Foata normal form. 4/29032 useless extension candidates. Maximal degree in co-relation 65125. Up to 27124 conditions per place. [2024-05-12 13:27:07,936 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 67 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-05-12 13:27:07,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 402 flow [2024-05-12 13:27:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:27:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:27:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-05-12 13:27:07,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646551724137931 [2024-05-12 13:27:07,949 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 150 transitions. [2024-05-12 13:27:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 402 flow [2024-05-12 13:27:07,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:27:07,952 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-05-12 13:27:07,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-05-12 13:27:07,953 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-05-12 13:27:07,953 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-05-12 13:27:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 13:27:07,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:07,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:07,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:27:07,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:07,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2140088847, now seen corresponding path program 1 times [2024-05-12 13:27:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:07,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647656706] [2024-05-12 13:27:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:07,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:08,639 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 13:27:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:08,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647656706] [2024-05-12 13:27:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647656706] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:08,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:27:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34801559] [2024-05-12 13:27:08,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:08,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:27:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:27:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:27:08,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:08,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:08,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:08,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:08,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:11,116 INFO L124 PetriNetUnfolderBase]: 20470/29643 cut-off events. [2024-05-12 13:27:11,117 INFO L125 PetriNetUnfolderBase]: For 12311/12311 co-relation queries the response was YES. [2024-05-12 13:27:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70824 conditions, 29643 events. 20470/29643 cut-off events. For 12311/12311 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 195757 event pairs, 11005 based on Foata normal form. 7/28047 useless extension candidates. Maximal degree in co-relation 70807. Up to 27027 conditions per place. [2024-05-12 13:27:11,263 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 89 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-05-12 13:27:11,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 664 flow [2024-05-12 13:27:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:27:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:27:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 196 transitions. [2024-05-12 13:27:11,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6758620689655173 [2024-05-12 13:27:11,266 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 196 transitions. [2024-05-12 13:27:11,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 664 flow [2024-05-12 13:27:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 640 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:27:11,272 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 379 flow [2024-05-12 13:27:11,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-05-12 13:27:11,273 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-05-12 13:27:11,274 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 379 flow [2024-05-12 13:27:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:11,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:11,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:27:11,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:11,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash 664014064, now seen corresponding path program 1 times [2024-05-12 13:27:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084761820] [2024-05-12 13:27:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:11,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:12,271 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 13:27:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084761820] [2024-05-12 13:27:12,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084761820] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:12,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:27:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630045672] [2024-05-12 13:27:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:27:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:27:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:27:12,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:12,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:12,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:12,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:12,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:15,073 INFO L124 PetriNetUnfolderBase]: 20539/31045 cut-off events. [2024-05-12 13:27:15,073 INFO L125 PetriNetUnfolderBase]: For 32270/32275 co-relation queries the response was YES. [2024-05-12 13:27:15,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83496 conditions, 31045 events. 20539/31045 cut-off events. For 32270/32275 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 221863 event pairs, 11027 based on Foata normal form. 18/29277 useless extension candidates. Maximal degree in co-relation 83476. Up to 27008 conditions per place. [2024-05-12 13:27:15,247 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 100 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-05-12 13:27:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 144 transitions, 847 flow [2024-05-12 13:27:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-05-12 13:27:15,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6580459770114943 [2024-05-12 13:27:15,249 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 379 flow. Second operand 6 states and 229 transitions. [2024-05-12 13:27:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 144 transitions, 847 flow [2024-05-12 13:27:15,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 831 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-05-12 13:27:15,259 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 475 flow [2024-05-12 13:27:15,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-05-12 13:27:15,260 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-05-12 13:27:15,260 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 475 flow [2024-05-12 13:27:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:15,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:15,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:27:15,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:15,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -652805279, now seen corresponding path program 1 times [2024-05-12 13:27:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060352878] [2024-05-12 13:27:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:16,083 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 13:27:16,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:16,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060352878] [2024-05-12 13:27:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060352878] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:27:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433160080] [2024-05-12 13:27:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:27:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:27:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:27:16,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:16,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:16,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:16,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:16,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:18,820 INFO L124 PetriNetUnfolderBase]: 20118/27842 cut-off events. [2024-05-12 13:27:18,820 INFO L125 PetriNetUnfolderBase]: For 40970/40970 co-relation queries the response was YES. [2024-05-12 13:27:18,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86867 conditions, 27842 events. 20118/27842 cut-off events. For 40970/40970 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 170139 event pairs, 8707 based on Foata normal form. 3/26660 useless extension candidates. Maximal degree in co-relation 86844. Up to 26723 conditions per place. [2024-05-12 13:27:19,005 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 86 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2024-05-12 13:27:19,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 735 flow [2024-05-12 13:27:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:27:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:27:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-05-12 13:27:19,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-05-12 13:27:19,007 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 475 flow. Second operand 5 states and 164 transitions. [2024-05-12 13:27:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 735 flow [2024-05-12 13:27:19,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 647 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:27:19,022 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 423 flow [2024-05-12 13:27:19,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-05-12 13:27:19,023 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-05-12 13:27:19,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 423 flow [2024-05-12 13:27:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:19,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:19,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:27:19,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:19,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1193562559, now seen corresponding path program 1 times [2024-05-12 13:27:19,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:19,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821543767] [2024-05-12 13:27:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:19,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:19,909 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 13:27:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821543767] [2024-05-12 13:27:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821543767] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:19,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:27:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629340354] [2024-05-12 13:27:19,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:19,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:27:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:27:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:19,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-05-12 13:27:19,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:19,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:19,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-05-12 13:27:19,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:22,845 INFO L124 PetriNetUnfolderBase]: 20206/28263 cut-off events. [2024-05-12 13:27:22,845 INFO L125 PetriNetUnfolderBase]: For 42882/42882 co-relation queries the response was YES. [2024-05-12 13:27:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87638 conditions, 28263 events. 20206/28263 cut-off events. For 42882/42882 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 173597 event pairs, 8318 based on Foata normal form. 7/27214 useless extension candidates. Maximal degree in co-relation 87613. Up to 26597 conditions per place. [2024-05-12 13:27:23,020 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 107 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-05-12 13:27:23,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 951 flow [2024-05-12 13:27:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-05-12 13:27:23,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005747126436781 [2024-05-12 13:27:23,022 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 423 flow. Second operand 6 states and 209 transitions. [2024-05-12 13:27:23,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 951 flow [2024-05-12 13:27:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 915 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:27:23,045 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 608 flow [2024-05-12 13:27:23,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-05-12 13:27:23,048 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-05-12 13:27:23,048 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 608 flow [2024-05-12 13:27:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:27:23,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:23,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:27:23,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:23,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1659986722, now seen corresponding path program 1 times [2024-05-12 13:27:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280441843] [2024-05-12 13:27:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:24,024 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 13:27:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280441843] [2024-05-12 13:27:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280441843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:24,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:27:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058670319] [2024-05-12 13:27:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:24,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:27:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:27:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:24,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:24,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 13:27:24,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:24,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:24,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:27,396 INFO L124 PetriNetUnfolderBase]: 23520/31606 cut-off events. [2024-05-12 13:27:27,397 INFO L125 PetriNetUnfolderBase]: For 78172/78182 co-relation queries the response was YES. [2024-05-12 13:27:27,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111290 conditions, 31606 events. 23520/31606 cut-off events. For 78172/78182 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 182187 event pairs, 9899 based on Foata normal form. 14/30567 useless extension candidates. Maximal degree in co-relation 111263. Up to 30975 conditions per place. [2024-05-12 13:27:27,560 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 108 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-05-12 13:27:27,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 1068 flow [2024-05-12 13:27:27,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-05-12 13:27:27,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-05-12 13:27:27,562 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 608 flow. Second operand 6 states and 203 transitions. [2024-05-12 13:27:27,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 1068 flow [2024-05-12 13:27:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 151 transitions, 1036 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-05-12 13:27:27,611 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 694 flow [2024-05-12 13:27:27,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-05-12 13:27:27,612 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-05-12 13:27:27,612 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 694 flow [2024-05-12 13:27:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 13:27:27,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:27,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:27:27,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:27,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -280609792, now seen corresponding path program 2 times [2024-05-12 13:27:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965482731] [2024-05-12 13:27:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:28,307 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 13:27:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965482731] [2024-05-12 13:27:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965482731] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:28,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:27:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536667737] [2024-05-12 13:27:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:27:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:27:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:27:28,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:28,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 694 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 13:27:28,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:28,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:28,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:31,513 INFO L124 PetriNetUnfolderBase]: 23492/31554 cut-off events. [2024-05-12 13:27:31,513 INFO L125 PetriNetUnfolderBase]: For 81460/81460 co-relation queries the response was YES. [2024-05-12 13:27:31,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110895 conditions, 31554 events. 23492/31554 cut-off events. For 81460/81460 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 181839 event pairs, 9929 based on Foata normal form. 3/30501 useless extension candidates. Maximal degree in co-relation 110865. Up to 30941 conditions per place. [2024-05-12 13:27:31,757 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 101 selfloop transitions, 32 changer transitions 0/145 dead transitions. [2024-05-12 13:27:31,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1052 flow [2024-05-12 13:27:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:27:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:27:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-05-12 13:27:31,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-05-12 13:27:31,759 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 694 flow. Second operand 6 states and 198 transitions. [2024-05-12 13:27:31,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 1052 flow [2024-05-12 13:27:31,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 995 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:27:31,826 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 713 flow [2024-05-12 13:27:31,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-05-12 13:27:31,828 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-05-12 13:27:31,828 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 713 flow [2024-05-12 13:27:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 13:27:31,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:31,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:31,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:27:31,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:31,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1908753984, now seen corresponding path program 1 times [2024-05-12 13:27:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:31,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525755741] [2024-05-12 13:27:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:32,878 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 13:27:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525755741] [2024-05-12 13:27:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525755741] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:32,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:27:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159416397] [2024-05-12 13:27:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:27:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:27:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:27:32,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:32,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 713 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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 13:27:32,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:32,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:32,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:27:36,358 INFO L124 PetriNetUnfolderBase]: 25300/34049 cut-off events. [2024-05-12 13:27:36,359 INFO L125 PetriNetUnfolderBase]: For 99180/99184 co-relation queries the response was YES. [2024-05-12 13:27:36,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122461 conditions, 34049 events. 25300/34049 cut-off events. For 99180/99184 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 196343 event pairs, 7997 based on Foata normal form. 15/32706 useless extension candidates. Maximal degree in co-relation 122430. Up to 31166 conditions per place. [2024-05-12 13:27:36,850 INFO L140 encePairwiseOnDemand]: 39/58 looper letters, 158 selfloop transitions, 78 changer transitions 0/248 dead transitions. [2024-05-12 13:27:36,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 248 transitions, 2054 flow [2024-05-12 13:27:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:27:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:27:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2024-05-12 13:27:36,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336206896551724 [2024-05-12 13:27:36,852 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 713 flow. Second operand 8 states and 294 transitions. [2024-05-12 13:27:36,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 248 transitions, 2054 flow [2024-05-12 13:27:36,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 248 transitions, 1854 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 13:27:36,923 INFO L231 Difference]: Finished difference. Result has 96 places, 152 transitions, 1181 flow [2024-05-12 13:27:36,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=96, PETRI_TRANSITIONS=152} [2024-05-12 13:27:36,925 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-05-12 13:27:36,925 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 152 transitions, 1181 flow [2024-05-12 13:27:36,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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 13:27:36,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:27:36,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:27:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:27:36,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:27:36,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:27:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash 80020608, now seen corresponding path program 2 times [2024-05-12 13:27:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:27:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158528384] [2024-05-12 13:27:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:27:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:27:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:27:37,767 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 13:27:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:27:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158528384] [2024-05-12 13:27:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158528384] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:27:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:27:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:27:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625822551] [2024-05-12 13:27:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:27:37,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:27:37,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:27:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:27:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:27:37,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:27:37,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 152 transitions, 1181 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 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 13:27:37,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:27:37,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:27:37,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand