./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix017_power.opt_rmo.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/mix017_power.opt_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix017_power.opt_rmo.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 13:11:11,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:11:11,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:11:11,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:11:11,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:11:11,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:11:11,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:11:11,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:11:11,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:11:11,571 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:11:11,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:11:11,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:11:11,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:11:11,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:11:11,573 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:11:11,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:11:11,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:11:11,574 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:11:11,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:11:11,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:11:11,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:11:11,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:11:11,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:11:11,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:11:11,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:11:11,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:11:11,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:11:11,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:11:11,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:11:11,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:11:11,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:11:11,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:11:11,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:11:11,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:11:11,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:11:11,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:11:11,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:11:11,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:11:11,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:11:11,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:11:11,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:11:11,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:11:11,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:11:11,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:11:11,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:11:11,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:11:11,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:11:11,804 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:11:11,805 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:11:11,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix017_power.opt_rmo.opt.yml/witness.yml [2024-05-12 13:11:12,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:11:12,029 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:11:12,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-05-12 13:11:13,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:11:13,290 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:11:13,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-05-12 13:11:13,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1772ff1/5cc9fc74e01b4ff8a828494284d768fc/FLAGe20c32950 [2024-05-12 13:11:13,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1772ff1/5cc9fc74e01b4ff8a828494284d768fc [2024-05-12 13:11:13,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:11:13,318 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:11:13,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:11:13,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:11:13,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:11:13,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:12" (1/2) ... [2024-05-12 13:11:13,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21eadac1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:13, skipping insertion in model container [2024-05-12 13:11:13,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:12" (1/2) ... [2024-05-12 13:11:13,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2749f308 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:11:13, skipping insertion in model container [2024-05-12 13:11:13,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:11:13" (2/2) ... [2024-05-12 13:11:13,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21eadac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13, skipping insertion in model container [2024-05-12 13:11:13,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:11:13" (2/2) ... [2024-05-12 13:11:13,326 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:11:13,425 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:11:13,426 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-05-12 13:11:13,426 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-05-12 13:11:13,426 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-05-12 13:11:13,427 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] (((((((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-05-12 13:11:13,427 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:11:13,427 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-05-12 13:11:13,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:11:13,624 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/mix017_power.opt_rmo.opt.i[958,971] [2024-05-12 13:11:13,812 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:11:13,819 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:11:13,850 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/mix017_power.opt_rmo.opt.i[958,971] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:11:13,925 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:11:13,954 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:11:13,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13 WrapperNode [2024-05-12 13:11:13,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:11:13,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:11:13,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:11:13,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:11:13,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:13,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,007 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2024-05-12 13:11:14,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:11:14,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:11:14,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:11:14,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:11:14,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,055 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 13:11:14,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:11:14,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:11:14,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:11:14,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:11:14,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (1/1) ... [2024-05-12 13:11:14,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:11:14,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:11:14,113 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 13:11:14,136 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 13:11:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:11:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:11:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:11:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:11:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:11:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:11:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:11:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:11:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:11:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:11:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:11:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:11:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:11:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:11:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:11:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:11:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:11:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:11:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:11:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:11:14,155 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 13:11:14,297 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:11:14,299 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:11:14,718 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:11:14,719 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:11:14,860 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:11:14,861 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:11:14,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:11:14 BoogieIcfgContainer [2024-05-12 13:11:14,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:11:14,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:11:14,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:11:14,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:11:14,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:11:12" (1/4) ... [2024-05-12 13:11:14,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e1ed1e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:11:14, skipping insertion in model container [2024-05-12 13:11:14,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:11:13" (2/4) ... [2024-05-12 13:11:14,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e1ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:11:14, skipping insertion in model container [2024-05-12 13:11:14,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:11:13" (3/4) ... [2024-05-12 13:11:14,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e1ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:11:14, skipping insertion in model container [2024-05-12 13:11:14,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:11:14" (4/4) ... [2024-05-12 13:11:14,872 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017_power.opt_rmo.opt.i [2024-05-12 13:11:14,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:11:14,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:11:14,884 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:11:14,930 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:11:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:11:14,991 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-05-12 13:11:14,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:11:14,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-05-12 13:11:14,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-05-12 13:11:14,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-05-12 13:11:15,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:11:15,018 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;@a97d6fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:11:15,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:11:15,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:11:15,022 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:11:15,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:11:15,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:15,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:11:15,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:15,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash -973172283, now seen corresponding path program 1 times [2024-05-12 13:11:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:15,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454178630] [2024-05-12 13:11:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:16,252 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 13:11:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454178630] [2024-05-12 13:11:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454178630] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:16,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:16,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:11:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793155779] [2024-05-12 13:11:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:16,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:11:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:11:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:11:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-05-12 13:11:16,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:16,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:16,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-05-12 13:11:16,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:18,444 INFO L124 PetriNetUnfolderBase]: 14039/21369 cut-off events. [2024-05-12 13:11:18,445 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-05-12 13:11:18,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40479 conditions, 21369 events. 14039/21369 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 151839 event pairs, 11543 based on Foata normal form. 481/20112 useless extension candidates. Maximal degree in co-relation 40463. Up to 18797 conditions per place. [2024-05-12 13:11:18,559 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 51 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:11:18,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 281 flow [2024-05-12 13:11:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:11:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:11:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-05-12 13:11:18,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-05-12 13:11:18,570 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 123 transitions. [2024-05-12 13:11:18,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 281 flow [2024-05-12 13:11:18,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 274 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:18,579 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-05-12 13:11:18,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-05-12 13:11:18,583 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-05-12 13:11:18,583 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-05-12 13:11:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:18,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:18,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:18,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:11:18,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:18,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1084339428, now seen corresponding path program 1 times [2024-05-12 13:11:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190135732] [2024-05-12 13:11:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:19,428 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 13:11:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190135732] [2024-05-12 13:11:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190135732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:19,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:19,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:11:19,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319337558] [2024-05-12 13:11:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:11:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:11:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:11:19,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-05-12 13:11:19,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:19,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:19,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-05-12 13:11:19,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:21,656 INFO L124 PetriNetUnfolderBase]: 16749/25132 cut-off events. [2024-05-12 13:11:21,656 INFO L125 PetriNetUnfolderBase]: For 4180/4180 co-relation queries the response was YES. [2024-05-12 13:11:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53878 conditions, 25132 events. 16749/25132 cut-off events. For 4180/4180 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 177660 event pairs, 12127 based on Foata normal form. 4/23492 useless extension candidates. Maximal degree in co-relation 53863. Up to 22314 conditions per place. [2024-05-12 13:11:21,801 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 66 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-05-12 13:11:21,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 402 flow [2024-05-12 13:11:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:11:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:11:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-05-12 13:11:21,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652542372881356 [2024-05-12 13:11:21,804 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 4 states and 157 transitions. [2024-05-12 13:11:21,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 402 flow [2024-05-12 13:11:21,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:11:21,806 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 220 flow [2024-05-12 13:11:21,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-05-12 13:11:21,807 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-05-12 13:11:21,807 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 220 flow [2024-05-12 13:11:21,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:21,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:21,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:21,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:11:21,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:21,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1107947739, now seen corresponding path program 1 times [2024-05-12 13:11:21,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:21,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074183058] [2024-05-12 13:11:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:21,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:22,717 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 13:11:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074183058] [2024-05-12 13:11:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074183058] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:22,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286302137] [2024-05-12 13:11:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:11:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:11:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:11:22,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:22,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:22,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:22,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:22,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:25,188 INFO L124 PetriNetUnfolderBase]: 21261/31673 cut-off events. [2024-05-12 13:11:25,189 INFO L125 PetriNetUnfolderBase]: For 13737/13737 co-relation queries the response was YES. [2024-05-12 13:11:25,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74748 conditions, 31673 events. 21261/31673 cut-off events. For 13737/13737 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 223221 event pairs, 12625 based on Foata normal form. 8/29633 useless extension candidates. Maximal degree in co-relation 74731. Up to 28131 conditions per place. [2024-05-12 13:11:25,401 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 92 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-05-12 13:11:25,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 622 flow [2024-05-12 13:11:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-05-12 13:11:25,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632768361581921 [2024-05-12 13:11:25,407 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 220 flow. Second operand 6 states and 224 transitions. [2024-05-12 13:11:25,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 622 flow [2024-05-12 13:11:25,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 586 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:11:25,413 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 299 flow [2024-05-12 13:11:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-05-12 13:11:25,414 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-05-12 13:11:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 299 flow [2024-05-12 13:11:25,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:25,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:25,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:11:25,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:25,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 560511316, now seen corresponding path program 1 times [2024-05-12 13:11:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:25,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338978944] [2024-05-12 13:11:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:25,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:26,509 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 13:11:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:26,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338978944] [2024-05-12 13:11:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338978944] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:26,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:26,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510751872] [2024-05-12 13:11:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:11:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:11:26,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:11:26,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:26,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:26,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:26,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:26,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:29,434 INFO L124 PetriNetUnfolderBase]: 20209/28930 cut-off events. [2024-05-12 13:11:29,434 INFO L125 PetriNetUnfolderBase]: For 21843/21843 co-relation queries the response was YES. [2024-05-12 13:11:29,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77067 conditions, 28930 events. 20209/28930 cut-off events. For 21843/21843 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 188518 event pairs, 9054 based on Foata normal form. 6/27539 useless extension candidates. Maximal degree in co-relation 77048. Up to 26838 conditions per place. [2024-05-12 13:11:29,613 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 79 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-05-12 13:11:29,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 577 flow [2024-05-12 13:11:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:11:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:11:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-05-12 13:11:29,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-05-12 13:11:29,616 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 299 flow. Second operand 5 states and 170 transitions. [2024-05-12 13:11:29,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 577 flow [2024-05-12 13:11:29,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 528 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:29,627 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 326 flow [2024-05-12 13:11:29,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-05-12 13:11:29,628 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-05-12 13:11:29,628 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 326 flow [2024-05-12 13:11:29,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:29,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:29,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:29,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:11:29,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:29,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 195733618, now seen corresponding path program 1 times [2024-05-12 13:11:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898817295] [2024-05-12 13:11:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:29,738 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 13:11:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898817295] [2024-05-12 13:11:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898817295] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:11:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016500904] [2024-05-12 13:11:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:11:29,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:11:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:11:29,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2024-05-12 13:11:29,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:29,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:29,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2024-05-12 13:11:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:30,657 INFO L124 PetriNetUnfolderBase]: 5459/9972 cut-off events. [2024-05-12 13:11:30,658 INFO L125 PetriNetUnfolderBase]: For 8250/8975 co-relation queries the response was YES. [2024-05-12 13:11:30,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23851 conditions, 9972 events. 5459/9972 cut-off events. For 8250/8975 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 84450 event pairs, 1462 based on Foata normal form. 2/9169 useless extension candidates. Maximal degree in co-relation 23830. Up to 5865 conditions per place. [2024-05-12 13:11:30,717 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 37 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-05-12 13:11:30,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 402 flow [2024-05-12 13:11:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:11:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:11:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-05-12 13:11:30,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.751412429378531 [2024-05-12 13:11:30,719 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 326 flow. Second operand 3 states and 133 transitions. [2024-05-12 13:11:30,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 402 flow [2024-05-12 13:11:30,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 373 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:30,722 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 271 flow [2024-05-12 13:11:30,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-05-12 13:11:30,722 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-05-12 13:11:30,723 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 271 flow [2024-05-12 13:11:30,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:30,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:30,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:30,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:11:30,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:30,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1774765299, now seen corresponding path program 1 times [2024-05-12 13:11:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679444052] [2024-05-12 13:11:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679444052] [2024-05-12 13:11:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679444052] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557164410] [2024-05-12 13:11:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:31,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:31,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 271 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 13:11:31,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:31,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:31,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:34,867 INFO L124 PetriNetUnfolderBase]: 20047/27716 cut-off events. [2024-05-12 13:11:34,868 INFO L125 PetriNetUnfolderBase]: For 41679/41679 co-relation queries the response was YES. [2024-05-12 13:11:34,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78891 conditions, 27716 events. 20047/27716 cut-off events. For 41679/41679 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 168162 event pairs, 8543 based on Foata normal form. 6/27710 useless extension candidates. Maximal degree in co-relation 78871. Up to 26449 conditions per place. [2024-05-12 13:11:35,144 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 89 selfloop transitions, 21 changer transitions 4/127 dead transitions. [2024-05-12 13:11:35,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 127 transitions, 695 flow [2024-05-12 13:11:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-05-12 13:11:35,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2024-05-12 13:11:35,146 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 271 flow. Second operand 6 states and 206 transitions. [2024-05-12 13:11:35,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 127 transitions, 695 flow [2024-05-12 13:11:35,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:11:35,165 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 372 flow [2024-05-12 13:11:35,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-05-12 13:11:35,168 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2024-05-12 13:11:35,168 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 372 flow [2024-05-12 13:11:35,168 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 13:11:35,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:35,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:35,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:11:35,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:35,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1712178007, now seen corresponding path program 2 times [2024-05-12 13:11:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139334460] [2024-05-12 13:11:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:36,123 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 13:11:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139334460] [2024-05-12 13:11:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139334460] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516712352] [2024-05-12 13:11:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:36,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:36,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:36,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 372 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 13:11:36,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:36,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:36,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:38,831 INFO L124 PetriNetUnfolderBase]: 17596/24382 cut-off events. [2024-05-12 13:11:38,832 INFO L125 PetriNetUnfolderBase]: For 47419/47428 co-relation queries the response was YES. [2024-05-12 13:11:38,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74053 conditions, 24382 events. 17596/24382 cut-off events. For 47419/47428 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 146433 event pairs, 7608 based on Foata normal form. 12/24385 useless extension candidates. Maximal degree in co-relation 74031. Up to 23265 conditions per place. [2024-05-12 13:11:38,994 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 82 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-05-12 13:11:38,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 116 transitions, 668 flow [2024-05-12 13:11:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-05-12 13:11:38,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508474576271186 [2024-05-12 13:11:38,996 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 372 flow. Second operand 6 states and 195 transitions. [2024-05-12 13:11:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 116 transitions, 668 flow [2024-05-12 13:11:39,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 622 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 13:11:39,026 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 379 flow [2024-05-12 13:11:39,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-05-12 13:11:39,027 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-05-12 13:11:39,027 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 379 flow [2024-05-12 13:11:39,027 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 13:11:39,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:39,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:11:39,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1950810445, now seen corresponding path program 1 times [2024-05-12 13:11:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842312971] [2024-05-12 13:11:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:40,311 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 13:11:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:40,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842312971] [2024-05-12 13:11:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842312971] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:40,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:40,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233091956] [2024-05-12 13:11:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:40,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:40,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 379 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:40,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:40,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:40,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:43,158 INFO L124 PetriNetUnfolderBase]: 17789/24672 cut-off events. [2024-05-12 13:11:43,158 INFO L125 PetriNetUnfolderBase]: For 50794/50798 co-relation queries the response was YES. [2024-05-12 13:11:43,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74914 conditions, 24672 events. 17789/24672 cut-off events. For 50794/50798 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 148043 event pairs, 8044 based on Foata normal form. 10/24674 useless extension candidates. Maximal degree in co-relation 74890. Up to 23547 conditions per place. [2024-05-12 13:11:43,296 INFO L140 encePairwiseOnDemand]: 43/59 looper letters, 112 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-05-12 13:11:43,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 158 transitions, 932 flow [2024-05-12 13:11:43,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2024-05-12 13:11:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572033898305084 [2024-05-12 13:11:43,298 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 379 flow. Second operand 8 states and 263 transitions. [2024-05-12 13:11:43,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 158 transitions, 932 flow [2024-05-12 13:11:43,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 158 transitions, 858 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:43,323 INFO L231 Difference]: Finished difference. Result has 84 places, 98 transitions, 539 flow [2024-05-12 13:11:43,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=84, PETRI_TRANSITIONS=98} [2024-05-12 13:11:43,323 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-05-12 13:11:43,323 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 98 transitions, 539 flow [2024-05-12 13:11:43,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:43,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:43,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:11:43,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:43,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1927498139, now seen corresponding path program 2 times [2024-05-12 13:11:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181710767] [2024-05-12 13:11:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:43,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:44,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181710767] [2024-05-12 13:11:44,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181710767] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:44,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:44,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091297842] [2024-05-12 13:11:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:44,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:44,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:44,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 98 transitions, 539 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:44,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:44,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:44,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:47,608 INFO L124 PetriNetUnfolderBase]: 17865/24788 cut-off events. [2024-05-12 13:11:47,609 INFO L125 PetriNetUnfolderBase]: For 70813/70821 co-relation queries the response was YES. [2024-05-12 13:11:47,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81444 conditions, 24788 events. 17865/24788 cut-off events. For 70813/70821 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 148991 event pairs, 7842 based on Foata normal form. 14/24780 useless extension candidates. Maximal degree in co-relation 81418. Up to 23589 conditions per place. [2024-05-12 13:11:47,759 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 111 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-05-12 13:11:47,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 158 transitions, 1047 flow [2024-05-12 13:11:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-05-12 13:11:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5569007263922519 [2024-05-12 13:11:47,762 INFO L175 Difference]: Start difference. First operand has 84 places, 98 transitions, 539 flow. Second operand 7 states and 230 transitions. [2024-05-12 13:11:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 158 transitions, 1047 flow [2024-05-12 13:11:47,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 158 transitions, 989 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:47,796 INFO L231 Difference]: Finished difference. Result has 88 places, 102 transitions, 616 flow [2024-05-12 13:11:47,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=88, PETRI_TRANSITIONS=102} [2024-05-12 13:11:47,797 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-05-12 13:11:47,797 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 102 transitions, 616 flow [2024-05-12 13:11:47,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:47,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:47,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:47,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:11:47,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:47,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1927502789, now seen corresponding path program 3 times [2024-05-12 13:11:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:47,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299954589] [2024-05-12 13:11:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:48,984 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 13:11:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299954589] [2024-05-12 13:11:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299954589] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:48,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:48,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976524982] [2024-05-12 13:11:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:49,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:49,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:51,906 INFO L124 PetriNetUnfolderBase]: 17941/24937 cut-off events. [2024-05-12 13:11:51,907 INFO L125 PetriNetUnfolderBase]: For 93420/93422 co-relation queries the response was YES. [2024-05-12 13:11:51,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87124 conditions, 24937 events. 17941/24937 cut-off events. For 93420/93422 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 149850 event pairs, 7091 based on Foata normal form. 6/24927 useless extension candidates. Maximal degree in co-relation 87097. Up to 23402 conditions per place. [2024-05-12 13:11:52,087 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 103 selfloop transitions, 50 changer transitions 0/166 dead transitions. [2024-05-12 13:11:52,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 166 transitions, 1228 flow [2024-05-12 13:11:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-05-12 13:11:52,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738498789346247 [2024-05-12 13:11:52,089 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 616 flow. Second operand 7 states and 237 transitions. [2024-05-12 13:11:52,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 166 transitions, 1228 flow [2024-05-12 13:11:52,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 166 transitions, 1109 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:52,138 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 722 flow [2024-05-12 13:11:52,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2024-05-12 13:11:52,139 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-05-12 13:11:52,140 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 722 flow [2024-05-12 13:11:52,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:52,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:52,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:11:52,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:52,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1557572147, now seen corresponding path program 4 times [2024-05-12 13:11:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122989989] [2024-05-12 13:11:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:53,312 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 13:11:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:53,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122989989] [2024-05-12 13:11:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122989989] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616339930] [2024-05-12 13:11:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:53,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:53,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-05-12 13:11:53,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 722 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:53,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:53,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-05-12 13:11:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:56,508 INFO L124 PetriNetUnfolderBase]: 17923/24915 cut-off events. [2024-05-12 13:11:56,508 INFO L125 PetriNetUnfolderBase]: For 94041/94046 co-relation queries the response was YES. [2024-05-12 13:11:56,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86997 conditions, 24915 events. 17923/24915 cut-off events. For 94041/94046 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 149772 event pairs, 7101 based on Foata normal form. 6/24896 useless extension candidates. Maximal degree in co-relation 86969. Up to 23387 conditions per place. [2024-05-12 13:11:56,699 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 97 selfloop transitions, 50 changer transitions 0/160 dead transitions. [2024-05-12 13:11:56,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 160 transitions, 1160 flow [2024-05-12 13:11:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-05-12 13:11:56,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5569007263922519 [2024-05-12 13:11:56,701 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 722 flow. Second operand 7 states and 230 transitions. [2024-05-12 13:11:56,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 160 transitions, 1160 flow [2024-05-12 13:11:56,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 1077 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:56,781 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 750 flow [2024-05-12 13:11:56,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=750, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2024-05-12 13:11:56,782 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2024-05-12 13:11:56,782 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 750 flow [2024-05-12 13:11:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 13:11:56,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:56,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:56,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:11:56,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:11:56,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1934178143, now seen corresponding path program 1 times [2024-05-12 13:11:56,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:56,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470177757] [2024-05-12 13:11:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:58,298 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 13:11:58,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:58,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470177757] [2024-05-12 13:11:58,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470177757] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:58,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:58,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888250281] [2024-05-12 13:11:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:58,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:58,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:58,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-05-12 13:11:58,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 750 flow. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:11:58,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:58,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-05-12 13:11:58,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:01,190 INFO L124 PetriNetUnfolderBase]: 15058/21474 cut-off events. [2024-05-12 13:12:01,190 INFO L125 PetriNetUnfolderBase]: For 85743/85745 co-relation queries the response was YES. [2024-05-12 13:12:01,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76036 conditions, 21474 events. 15058/21474 cut-off events. For 85743/85745 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 133655 event pairs, 5978 based on Foata normal form. 6/21255 useless extension candidates. Maximal degree in co-relation 76006. Up to 20038 conditions per place. [2024-05-12 13:12:01,331 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 134 selfloop transitions, 17 changer transitions 0/165 dead transitions. [2024-05-12 13:12:01,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1257 flow [2024-05-12 13:12:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-05-12 13:12:01,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544794188861986 [2024-05-12 13:12:01,333 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 750 flow. Second operand 7 states and 229 transitions. [2024-05-12 13:12:01,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1257 flow [2024-05-12 13:12:01,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 165 transitions, 1116 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:01,395 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 731 flow [2024-05-12 13:12:01,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=731, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-05-12 13:12:01,395 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2024-05-12 13:12:01,396 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 731 flow [2024-05-12 13:12:01,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 13:12:01,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:01,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:12:01,396 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:01,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -879763465, now seen corresponding path program 1 times [2024-05-12 13:12:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:01,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810477598] [2024-05-12 13:12:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:02,349 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 13:12:02,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:02,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810477598] [2024-05-12 13:12:02,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810477598] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:02,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:02,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:12:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726797850] [2024-05-12 13:12:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:12:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:12:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:12:02,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-05-12 13:12:02,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 731 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:02,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:02,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-05-12 13:12:02,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:04,716 INFO L124 PetriNetUnfolderBase]: 14187/22797 cut-off events. [2024-05-12 13:12:04,716 INFO L125 PetriNetUnfolderBase]: For 104944/104973 co-relation queries the response was YES. [2024-05-12 13:12:04,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79098 conditions, 22797 events. 14187/22797 cut-off events. For 104944/104973 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 170221 event pairs, 7349 based on Foata normal form. 29/22150 useless extension candidates. Maximal degree in co-relation 79066. Up to 19001 conditions per place. [2024-05-12 13:12:04,897 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 116 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2024-05-12 13:12:04,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 1118 flow [2024-05-12 13:12:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:12:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:12:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-05-12 13:12:04,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491525423728814 [2024-05-12 13:12:04,898 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 731 flow. Second operand 5 states and 162 transitions. [2024-05-12 13:12:04,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 1118 flow [2024-05-12 13:12:04,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 146 transitions, 1050 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:04,970 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 791 flow [2024-05-12 13:12:04,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=791, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2024-05-12 13:12:04,970 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2024-05-12 13:12:04,971 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 791 flow [2024-05-12 13:12:04,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:04,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:04,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:04,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:12:04,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:12:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash 868035596, now seen corresponding path program 1 times [2024-05-12 13:12:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831847661] [2024-05-12 13:12:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat