./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:50:44,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:50:44,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:50:44,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:50:44,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:50:44,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:50:44,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:50:44,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:50:44,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:50:44,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:50:44,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:50:44,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:50:44,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:50:44,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:50:44,334 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:50:44,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:50:44,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:50:44,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:50:44,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:50:44,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:50:44,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:50:44,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:50:44,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:50:44,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:50:44,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:50:44,336 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:50:44,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:50:44,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:50:44,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:50:44,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:50:44,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:50:44,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:50:44,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:50:44,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:50:44,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:50:44,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:50:44,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:50:44,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:50:44,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:50:44,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:50:44,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:50:44,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:50:44,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:50:44,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:50:44,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:50:44,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:50:44,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:50:44,573 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:50:44,574 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:50:44,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-03 19:50:44,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:50:44,743 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:50:44,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-03 19:50:45,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:50:46,183 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:50:46,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-03 19:50:46,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdb23925/a232362c6fcb466fb086def234c6ea45/FLAG16a185c6d [2024-06-03 19:50:46,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdb23925/a232362c6fcb466fb086def234c6ea45 [2024-06-03 19:50:46,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:50:46,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:50:46,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:50:46,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:50:46,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:50:46,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:44" (1/2) ... [2024-06-03 19:50:46,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449dbc08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:50:46, skipping insertion in model container [2024-06-03 19:50:46,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:44" (1/2) ... [2024-06-03 19:50:46,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29dccd0a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:50:46, skipping insertion in model container [2024-06-03 19:50:46,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:50:46" (2/2) ... [2024-06-03 19:50:46,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449dbc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46, skipping insertion in model container [2024-06-03 19:50:46,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:50:46" (2/2) ... [2024-06-03 19:50:46,224 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:50:46,317 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:50:46,318 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:50:46,318 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:50:46,318 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:50:46,318 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || z$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || ((0 <= b && b <= 1) && (b == 0 || b == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-03 19:50:46,319 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:50:46,319 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-03 19:50:46,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:50:46,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:50:46,673 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:50:46,789 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:50:46,886 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:50:46,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46 WrapperNode [2024-06-03 19:50:46,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:50:46,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:50:46,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:50:46,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:50:46,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,944 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 163 [2024-06-03 19:50:46,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:50:46,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:50:46,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:50:46,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:50:46,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,986 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 19:50:46,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:46,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:47,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:47,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:50:47,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:50:47,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:50:47,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:50:47,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (1/1) ... [2024-06-03 19:50:47,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:50:47,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:50:47,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 19:50:47,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 19:50:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:50:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:50:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:50:47,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:50:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:50:47,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:50:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-03 19:50:47,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-03 19:50:47,088 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-03 19:50:47,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-03 19:50:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:50:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:50:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:50:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:50:47,091 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:50:47,235 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:50:47,237 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:50:47,598 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:50:47,598 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:50:47,766 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:50:47,766 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:50:47,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:50:47 BoogieIcfgContainer [2024-06-03 19:50:47,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:50:47,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:50:47,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:50:47,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:50:47,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:50:44" (1/4) ... [2024-06-03 19:50:47,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1b0db7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:50:47, skipping insertion in model container [2024-06-03 19:50:47,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:50:46" (2/4) ... [2024-06-03 19:50:47,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1b0db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:50:47, skipping insertion in model container [2024-06-03 19:50:47,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:50:46" (3/4) ... [2024-06-03 19:50:47,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1b0db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:50:47, skipping insertion in model container [2024-06-03 19:50:47,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:50:47" (4/4) ... [2024-06-03 19:50:47,773 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-03 19:50:47,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:50:47,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 19:50:47,786 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:50:47,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:50:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:50:47,888 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-03 19:50:47,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:50:47,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:50:47,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-03 19:50:47,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-03 19:50:47,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:50:47,912 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;@52ee2e8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:50:47,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-03 19:50:47,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:50:47,918 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:50:47,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:50:47,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:47,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:50:47,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:47,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -947435025, now seen corresponding path program 1 times [2024-06-03 19:50:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737789777] [2024-06-03 19:50:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:47,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:49,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:49,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737789777] [2024-06-03 19:50:49,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737789777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:49,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:49,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:50:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472580506] [2024-06-03 19:50:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:50:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:50:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:50:49,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-03 19:50:49,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:49,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:49,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-03 19:50:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:50,682 INFO L124 PetriNetUnfolderBase]: 9547/13513 cut-off events. [2024-06-03 19:50:50,683 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-03 19:50:50,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26847 conditions, 13513 events. 9547/13513 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 76386 event pairs, 7308 based on Foata normal form. 1/13120 useless extension candidates. Maximal degree in co-relation 26831. Up to 12953 conditions per place. [2024-06-03 19:50:50,761 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 45 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-03 19:50:50,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 237 flow [2024-06-03 19:50:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:50:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:50:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-03 19:50:50,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-03 19:50:50,773 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 96 transitions. [2024-06-03 19:50:50,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 237 flow [2024-06-03 19:50:50,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-03 19:50:50,780 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-03 19:50:50,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-03 19:50:50,783 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-03 19:50:50,784 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-03 19:50:50,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:50,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:50,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:50:50,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:50,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash 48040718, now seen corresponding path program 1 times [2024-06-03 19:50:50,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:50,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563050486] [2024-06-03 19:50:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:51,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563050486] [2024-06-03 19:50:51,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563050486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:51,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:50:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367900185] [2024-06-03 19:50:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:51,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:50:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:50:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:50:51,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:51,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:51,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:51,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:51,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:53,326 INFO L124 PetriNetUnfolderBase]: 10932/15102 cut-off events. [2024-06-03 19:50:53,327 INFO L125 PetriNetUnfolderBase]: For 2813/2813 co-relation queries the response was YES. [2024-06-03 19:50:53,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34117 conditions, 15102 events. 10932/15102 cut-off events. For 2813/2813 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 82853 event pairs, 7512 based on Foata normal form. 4/14922 useless extension candidates. Maximal degree in co-relation 34102. Up to 14763 conditions per place. [2024-06-03 19:50:53,405 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 56 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-03 19:50:53,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 331 flow [2024-06-03 19:50:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:50:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:50:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-03 19:50:53,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-03 19:50:53,409 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 121 transitions. [2024-06-03 19:50:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 331 flow [2024-06-03 19:50:53,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:50:53,412 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-03 19:50:53,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-03 19:50:53,413 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-03 19:50:53,413 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-03 19:50:53,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:53,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:53,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:53,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:50:53,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:53,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1489263350, now seen corresponding path program 1 times [2024-06-03 19:50:53,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366133167] [2024-06-03 19:50:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:54,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:54,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366133167] [2024-06-03 19:50:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366133167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:50:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128835568] [2024-06-03 19:50:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:54,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:50:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:50:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:50:54,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:54,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:54,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:54,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:54,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:55,694 INFO L124 PetriNetUnfolderBase]: 10950/15203 cut-off events. [2024-06-03 19:50:55,695 INFO L125 PetriNetUnfolderBase]: For 8188/8188 co-relation queries the response was YES. [2024-06-03 19:50:55,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38085 conditions, 15203 events. 10950/15203 cut-off events. For 8188/8188 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84099 event pairs, 5910 based on Foata normal form. 7/15045 useless extension candidates. Maximal degree in co-relation 38068. Up to 14684 conditions per place. [2024-06-03 19:50:55,761 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 74 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-03 19:50:55,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 547 flow [2024-06-03 19:50:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:50:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:50:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-03 19:50:55,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2024-06-03 19:50:55,763 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 158 transitions. [2024-06-03 19:50:55,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 547 flow [2024-06-03 19:50:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 528 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 19:50:55,766 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 314 flow [2024-06-03 19:50:55,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-03 19:50:55,767 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-03 19:50:55,767 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 314 flow [2024-06-03 19:50:55,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:55,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:55,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:50:55,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:55,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash 958005749, now seen corresponding path program 1 times [2024-06-03 19:50:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778179347] [2024-06-03 19:50:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778179347] [2024-06-03 19:50:56,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778179347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:56,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:56,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:50:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572684590] [2024-06-03 19:50:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:56,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:50:56,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:50:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:50:56,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:56,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:56,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:56,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:56,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:50:58,379 INFO L124 PetriNetUnfolderBase]: 10979/15246 cut-off events. [2024-06-03 19:50:58,379 INFO L125 PetriNetUnfolderBase]: For 19602/19608 co-relation queries the response was YES. [2024-06-03 19:50:58,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44479 conditions, 15246 events. 10979/15246 cut-off events. For 19602/19608 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84364 event pairs, 4816 based on Foata normal form. 18/15099 useless extension candidates. Maximal degree in co-relation 44459. Up to 14649 conditions per place. [2024-06-03 19:50:58,449 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 81 selfloop transitions, 25 changer transitions 0/113 dead transitions. [2024-06-03 19:50:58,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 692 flow [2024-06-03 19:50:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:50:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:50:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-03 19:50:58,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-06-03 19:50:58,451 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 314 flow. Second operand 6 states and 182 transitions. [2024-06-03 19:50:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 692 flow [2024-06-03 19:50:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 680 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-03 19:50:58,458 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 391 flow [2024-06-03 19:50:58,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-03 19:50:58,459 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-06-03 19:50:58,459 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 391 flow [2024-06-03 19:50:58,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:58,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:50:58,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:50:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:50:58,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:50:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:50:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 413251227, now seen corresponding path program 1 times [2024-06-03 19:50:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:50:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542548043] [2024-06-03 19:50:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:50:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:50:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:50:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:50:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:50:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542548043] [2024-06-03 19:50:59,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542548043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:50:59,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:50:59,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:50:59,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022674573] [2024-06-03 19:50:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:50:59,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:50:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:50:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:50:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:50:59,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:50:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:50:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:50:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:50:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:00,481 INFO L124 PetriNetUnfolderBase]: 9575/13634 cut-off events. [2024-06-03 19:51:00,481 INFO L125 PetriNetUnfolderBase]: For 25662/25662 co-relation queries the response was YES. [2024-06-03 19:51:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43016 conditions, 13634 events. 9575/13634 cut-off events. For 25662/25662 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 78218 event pairs, 4948 based on Foata normal form. 3/13443 useless extension candidates. Maximal degree in co-relation 42993. Up to 12980 conditions per place. [2024-06-03 19:51:00,554 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 68 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-06-03 19:51:00,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 591 flow [2024-06-03 19:51:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:51:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:51:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-03 19:51:00,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-03 19:51:00,556 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 391 flow. Second operand 5 states and 128 transitions. [2024-06-03 19:51:00,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 591 flow [2024-06-03 19:51:00,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 522 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:00,565 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 353 flow [2024-06-03 19:51:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-03 19:51:00,566 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-03 19:51:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 353 flow [2024-06-03 19:51:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:51:00,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -80599773, now seen corresponding path program 1 times [2024-06-03 19:51:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402505371] [2024-06-03 19:51:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:01,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:01,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402505371] [2024-06-03 19:51:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402505371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:01,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:51:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927652483] [2024-06-03 19:51:01,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:51:01,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:51:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:51:01,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:51:01,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 353 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:01,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:01,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:51:01,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:02,982 INFO L124 PetriNetUnfolderBase]: 9587/13706 cut-off events. [2024-06-03 19:51:02,982 INFO L125 PetriNetUnfolderBase]: For 29621/29621 co-relation queries the response was YES. [2024-06-03 19:51:03,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43820 conditions, 13706 events. 9587/13706 cut-off events. For 29621/29621 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78785 event pairs, 4728 based on Foata normal form. 5/13559 useless extension candidates. Maximal degree in co-relation 43795. Up to 12930 conditions per place. [2024-06-03 19:51:03,044 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 81 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-06-03 19:51:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 753 flow [2024-06-03 19:51:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:51:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:51:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-03 19:51:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-03 19:51:03,048 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 353 flow. Second operand 6 states and 160 transitions. [2024-06-03 19:51:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 753 flow [2024-06-03 19:51:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 724 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:03,056 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 498 flow [2024-06-03 19:51:03,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-06-03 19:51:03,057 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-06-03 19:51:03,057 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 498 flow [2024-06-03 19:51:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:03,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:03,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:03,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:51:03,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:03,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1790653336, now seen corresponding path program 1 times [2024-06-03 19:51:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221341224] [2024-06-03 19:51:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:03,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221341224] [2024-06-03 19:51:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221341224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:03,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:51:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158297287] [2024-06-03 19:51:03,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:03,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:51:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:51:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:51:03,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:03,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 498 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:03,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:03,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:05,715 INFO L124 PetriNetUnfolderBase]: 10995/15270 cut-off events. [2024-06-03 19:51:05,715 INFO L125 PetriNetUnfolderBase]: For 52050/52062 co-relation queries the response was YES. [2024-06-03 19:51:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55269 conditions, 15270 events. 10995/15270 cut-off events. For 52050/52062 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 84090 event pairs, 5541 based on Foata normal form. 14/15132 useless extension candidates. Maximal degree in co-relation 55242. Up to 14743 conditions per place. [2024-06-03 19:51:05,821 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 85 selfloop transitions, 25 changer transitions 0/117 dead transitions. [2024-06-03 19:51:05,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 861 flow [2024-06-03 19:51:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:51:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:51:05,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-03 19:51:05,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-03 19:51:05,822 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 498 flow. Second operand 6 states and 157 transitions. [2024-06-03 19:51:05,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 861 flow [2024-06-03 19:51:05,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 837 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-03 19:51:05,842 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 570 flow [2024-06-03 19:51:05,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2024-06-03 19:51:05,843 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2024-06-03 19:51:05,843 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 570 flow [2024-06-03 19:51:05,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:05,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:05,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:51:05,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:05,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1997456506, now seen corresponding path program 2 times [2024-06-03 19:51:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975363371] [2024-06-03 19:51:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:05,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:06,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:06,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975363371] [2024-06-03 19:51:06,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975363371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:06,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:06,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:51:06,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381668555] [2024-06-03 19:51:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:51:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:51:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:51:06,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:06,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 570 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:06,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:06,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:06,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:09,028 INFO L124 PetriNetUnfolderBase]: 10971/15222 cut-off events. [2024-06-03 19:51:09,028 INFO L125 PetriNetUnfolderBase]: For 58100/58106 co-relation queries the response was YES. [2024-06-03 19:51:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55742 conditions, 15222 events. 10971/15222 cut-off events. For 58100/58106 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 83804 event pairs, 5561 based on Foata normal form. 4/15067 useless extension candidates. Maximal degree in co-relation 55712. Up to 14713 conditions per place. [2024-06-03 19:51:09,206 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 78 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-06-03 19:51:09,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 840 flow [2024-06-03 19:51:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:51:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:51:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-03 19:51:09,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-03 19:51:09,208 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 570 flow. Second operand 6 states and 152 transitions. [2024-06-03 19:51:09,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 840 flow [2024-06-03 19:51:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 797 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:09,242 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 590 flow [2024-06-03 19:51:09,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=590, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-03 19:51:09,243 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-03 19:51:09,244 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 590 flow [2024-06-03 19:51:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:09,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:09,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:09,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:51:09,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:09,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 74700964, now seen corresponding path program 1 times [2024-06-03 19:51:09,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:09,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3948891] [2024-06-03 19:51:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:09,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:10,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3948891] [2024-06-03 19:51:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3948891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434706230] [2024-06-03 19:51:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:10,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:10,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:10,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:10,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:10,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:10,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:11,933 INFO L124 PetriNetUnfolderBase]: 11509/15884 cut-off events. [2024-06-03 19:51:11,934 INFO L125 PetriNetUnfolderBase]: For 73836/73845 co-relation queries the response was YES. [2024-06-03 19:51:12,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60156 conditions, 15884 events. 11509/15884 cut-off events. For 73836/73845 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 87172 event pairs, 4900 based on Foata normal form. 13/15816 useless extension candidates. Maximal degree in co-relation 60125. Up to 14734 conditions per place. [2024-06-03 19:51:12,069 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 124 selfloop transitions, 59 changer transitions 0/190 dead transitions. [2024-06-03 19:51:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 1670 flow [2024-06-03 19:51:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:51:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:51:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-03 19:51:12,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-03 19:51:12,071 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 590 flow. Second operand 8 states and 223 transitions. [2024-06-03 19:51:12,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 1670 flow [2024-06-03 19:51:12,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 190 transitions, 1507 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:51:12,122 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 941 flow [2024-06-03 19:51:12,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2024-06-03 19:51:12,123 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-03 19:51:12,123 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 941 flow [2024-06-03 19:51:12,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:12,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:12,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:12,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:51:12,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:12,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -153618174, now seen corresponding path program 2 times [2024-06-03 19:51:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:12,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67265779] [2024-06-03 19:51:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:13,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67265779] [2024-06-03 19:51:13,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67265779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:13,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:13,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043663399] [2024-06-03 19:51:13,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:13,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:13,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:13,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:13,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 941 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:13,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:13,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:14,996 INFO L124 PetriNetUnfolderBase]: 11857/16402 cut-off events. [2024-06-03 19:51:14,997 INFO L125 PetriNetUnfolderBase]: For 105933/105948 co-relation queries the response was YES. [2024-06-03 19:51:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71145 conditions, 16402 events. 11857/16402 cut-off events. For 105933/105948 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 90494 event pairs, 5043 based on Foata normal form. 25/16346 useless extension candidates. Maximal degree in co-relation 71110. Up to 15002 conditions per place. [2024-06-03 19:51:15,131 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 103 selfloop transitions, 81 changer transitions 0/191 dead transitions. [2024-06-03 19:51:15,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 191 transitions, 1813 flow [2024-06-03 19:51:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-03 19:51:15,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-03 19:51:15,133 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 941 flow. Second operand 7 states and 192 transitions. [2024-06-03 19:51:15,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 191 transitions, 1813 flow [2024-06-03 19:51:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 191 transitions, 1719 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-03 19:51:15,213 INFO L231 Difference]: Finished difference. Result has 94 places, 144 transitions, 1314 flow [2024-06-03 19:51:15,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1314, PETRI_PLACES=94, PETRI_TRANSITIONS=144} [2024-06-03 19:51:15,214 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2024-06-03 19:51:15,214 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 144 transitions, 1314 flow [2024-06-03 19:51:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:15,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:15,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:15,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:51:15,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:15,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1201396880, now seen corresponding path program 3 times [2024-06-03 19:51:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:15,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431903042] [2024-06-03 19:51:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:15,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431903042] [2024-06-03 19:51:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431903042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:16,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:16,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:16,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291446152] [2024-06-03 19:51:16,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:16,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:16,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:16,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:16,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 144 transitions, 1314 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:16,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:16,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:18,146 INFO L124 PetriNetUnfolderBase]: 11939/16517 cut-off events. [2024-06-03 19:51:18,146 INFO L125 PetriNetUnfolderBase]: For 139315/139328 co-relation queries the response was YES. [2024-06-03 19:51:18,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78204 conditions, 16517 events. 11939/16517 cut-off events. For 139315/139328 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 90915 event pairs, 5063 based on Foata normal form. 14/16432 useless extension candidates. Maximal degree in co-relation 78165. Up to 15054 conditions per place. [2024-06-03 19:51:18,287 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 107 selfloop transitions, 93 changer transitions 0/207 dead transitions. [2024-06-03 19:51:18,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 207 transitions, 2258 flow [2024-06-03 19:51:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-03 19:51:18,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-03 19:51:18,289 INFO L175 Difference]: Start difference. First operand has 94 places, 144 transitions, 1314 flow. Second operand 7 states and 190 transitions. [2024-06-03 19:51:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 207 transitions, 2258 flow [2024-06-03 19:51:18,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 207 transitions, 2131 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:18,413 INFO L231 Difference]: Finished difference. Result has 99 places, 160 transitions, 1597 flow [2024-06-03 19:51:18,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1597, PETRI_PLACES=99, PETRI_TRANSITIONS=160} [2024-06-03 19:51:18,414 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-06-03 19:51:18,414 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 160 transitions, 1597 flow [2024-06-03 19:51:18,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:18,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:18,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:18,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:51:18,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:18,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1402479620, now seen corresponding path program 4 times [2024-06-03 19:51:18,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106170920] [2024-06-03 19:51:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:19,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106170920] [2024-06-03 19:51:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106170920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:19,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:19,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51541372] [2024-06-03 19:51:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:19,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:19,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 160 transitions, 1597 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:19,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:19,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:21,551 INFO L124 PetriNetUnfolderBase]: 11954/16548 cut-off events. [2024-06-03 19:51:21,551 INFO L125 PetriNetUnfolderBase]: For 172618/172641 co-relation queries the response was YES. [2024-06-03 19:51:21,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82597 conditions, 16548 events. 11954/16548 cut-off events. For 172618/172641 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 91353 event pairs, 5043 based on Foata normal form. 23/16472 useless extension candidates. Maximal degree in co-relation 82556. Up to 15072 conditions per place. [2024-06-03 19:51:21,724 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 97 selfloop transitions, 108 changer transitions 0/212 dead transitions. [2024-06-03 19:51:21,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 212 transitions, 2418 flow [2024-06-03 19:51:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-03 19:51:21,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-06-03 19:51:21,727 INFO L175 Difference]: Start difference. First operand has 99 places, 160 transitions, 1597 flow. Second operand 7 states and 188 transitions. [2024-06-03 19:51:21,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 212 transitions, 2418 flow [2024-06-03 19:51:21,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 212 transitions, 2223 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:21,863 INFO L231 Difference]: Finished difference. Result has 103 places, 168 transitions, 1750 flow [2024-06-03 19:51:21,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1750, PETRI_PLACES=103, PETRI_TRANSITIONS=168} [2024-06-03 19:51:21,864 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-03 19:51:21,864 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 168 transitions, 1750 flow [2024-06-03 19:51:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:21,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:51:21,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:21,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1570211408, now seen corresponding path program 1 times [2024-06-03 19:51:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115506822] [2024-06-03 19:51:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:22,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115506822] [2024-06-03 19:51:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115506822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:22,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409613957] [2024-06-03 19:51:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:22,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:51:22,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 168 transitions, 1750 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:22,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:22,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:51:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:24,635 INFO L124 PetriNetUnfolderBase]: 10579/14907 cut-off events. [2024-06-03 19:51:24,636 INFO L125 PetriNetUnfolderBase]: For 158577/158582 co-relation queries the response was YES. [2024-06-03 19:51:24,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74621 conditions, 14907 events. 10579/14907 cut-off events. For 158577/158582 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 84411 event pairs, 4299 based on Foata normal form. 12/14759 useless extension candidates. Maximal degree in co-relation 74578. Up to 14195 conditions per place. [2024-06-03 19:51:24,773 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 174 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2024-06-03 19:51:24,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 208 transitions, 2400 flow [2024-06-03 19:51:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-03 19:51:24,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-06-03 19:51:24,775 INFO L175 Difference]: Start difference. First operand has 103 places, 168 transitions, 1750 flow. Second operand 7 states and 185 transitions. [2024-06-03 19:51:24,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 208 transitions, 2400 flow [2024-06-03 19:51:24,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 208 transitions, 2210 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:24,911 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1677 flow [2024-06-03 19:51:24,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2024-06-03 19:51:24,912 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-03 19:51:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1677 flow [2024-06-03 19:51:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:24,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:24,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:51:24,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash -441423975, now seen corresponding path program 1 times [2024-06-03 19:51:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600838514] [2024-06-03 19:51:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600838514] [2024-06-03 19:51:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600838514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:25,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:51:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321747710] [2024-06-03 19:51:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:25,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:51:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:51:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:51:25,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:51:25,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1677 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:25,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:25,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:51:25,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:27,351 INFO L124 PetriNetUnfolderBase]: 10572/14891 cut-off events. [2024-06-03 19:51:27,352 INFO L125 PetriNetUnfolderBase]: For 173609/173611 co-relation queries the response was YES. [2024-06-03 19:51:27,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76401 conditions, 14891 events. 10572/14891 cut-off events. For 173609/173611 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 84104 event pairs, 4456 based on Foata normal form. 2/14731 useless extension candidates. Maximal degree in co-relation 76357. Up to 14310 conditions per place. [2024-06-03 19:51:27,494 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 168 selfloop transitions, 10 changer transitions 0/186 dead transitions. [2024-06-03 19:51:27,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 186 transitions, 2077 flow [2024-06-03 19:51:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:51:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:51:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-03 19:51:27,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-03 19:51:27,498 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1677 flow. Second operand 5 states and 124 transitions. [2024-06-03 19:51:27,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 186 transitions, 2077 flow [2024-06-03 19:51:27,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 186 transitions, 1982 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-03 19:51:27,674 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1611 flow [2024-06-03 19:51:27,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1611, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2024-06-03 19:51:27,675 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2024-06-03 19:51:27,675 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1611 flow [2024-06-03 19:51:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:27,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:27,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:51:27,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:27,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1464009070, now seen corresponding path program 1 times [2024-06-03 19:51:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676088259] [2024-06-03 19:51:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676088259] [2024-06-03 19:51:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676088259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:28,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:28,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:28,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451467744] [2024-06-03 19:51:28,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:28,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:28,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:28,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1611 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:28,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:28,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:30,841 INFO L124 PetriNetUnfolderBase]: 12053/16705 cut-off events. [2024-06-03 19:51:30,841 INFO L125 PetriNetUnfolderBase]: For 216641/216662 co-relation queries the response was YES. [2024-06-03 19:51:30,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86700 conditions, 16705 events. 12053/16705 cut-off events. For 216641/216662 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 92304 event pairs, 5134 based on Foata normal form. 25/16634 useless extension candidates. Maximal degree in co-relation 86655. Up to 15181 conditions per place. [2024-06-03 19:51:31,017 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 118 selfloop transitions, 112 changer transitions 0/237 dead transitions. [2024-06-03 19:51:31,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 237 transitions, 2661 flow [2024-06-03 19:51:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-03 19:51:31,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-06-03 19:51:31,019 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1611 flow. Second operand 7 states and 194 transitions. [2024-06-03 19:51:31,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 237 transitions, 2661 flow [2024-06-03 19:51:31,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 237 transitions, 2628 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:31,163 INFO L231 Difference]: Finished difference. Result has 111 places, 189 transitions, 2157 flow [2024-06-03 19:51:31,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2157, PETRI_PLACES=111, PETRI_TRANSITIONS=189} [2024-06-03 19:51:31,164 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-06-03 19:51:31,165 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 189 transitions, 2157 flow [2024-06-03 19:51:31,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:31,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:31,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:31,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:51:31,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:31,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1464003490, now seen corresponding path program 2 times [2024-06-03 19:51:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:31,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893817032] [2024-06-03 19:51:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893817032] [2024-06-03 19:51:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893817032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:32,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822258029] [2024-06-03 19:51:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:32,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:32,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:32,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:32,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 189 transitions, 2157 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:32,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:32,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:32,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:34,399 INFO L124 PetriNetUnfolderBase]: 12133/16849 cut-off events. [2024-06-03 19:51:34,399 INFO L125 PetriNetUnfolderBase]: For 255951/255986 co-relation queries the response was YES. [2024-06-03 19:51:34,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93237 conditions, 16849 events. 12133/16849 cut-off events. For 255951/255986 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 93649 event pairs, 5122 based on Foata normal form. 37/16790 useless extension candidates. Maximal degree in co-relation 93190. Up to 15259 conditions per place. [2024-06-03 19:51:34,557 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 117 selfloop transitions, 117 changer transitions 0/241 dead transitions. [2024-06-03 19:51:34,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 241 transitions, 3067 flow [2024-06-03 19:51:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-03 19:51:34,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-06-03 19:51:34,558 INFO L175 Difference]: Start difference. First operand has 111 places, 189 transitions, 2157 flow. Second operand 7 states and 188 transitions. [2024-06-03 19:51:34,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 241 transitions, 3067 flow [2024-06-03 19:51:35,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 241 transitions, 2906 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:35,025 INFO L231 Difference]: Finished difference. Result has 115 places, 198 transitions, 2382 flow [2024-06-03 19:51:35,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2382, PETRI_PLACES=115, PETRI_TRANSITIONS=198} [2024-06-03 19:51:35,026 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2024-06-03 19:51:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 198 transitions, 2382 flow [2024-06-03 19:51:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:35,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:51:35,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:35,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -287301086, now seen corresponding path program 3 times [2024-06-03 19:51:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745374713] [2024-06-03 19:51:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:35,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745374713] [2024-06-03 19:51:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745374713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:35,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53247306] [2024-06-03 19:51:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:35,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:35,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:35,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:35,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 198 transitions, 2382 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:35,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:35,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:35,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:38,266 INFO L124 PetriNetUnfolderBase]: 12148/16886 cut-off events. [2024-06-03 19:51:38,266 INFO L125 PetriNetUnfolderBase]: For 279593/279687 co-relation queries the response was YES. [2024-06-03 19:51:38,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94573 conditions, 16886 events. 12148/16886 cut-off events. For 279593/279687 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 93966 event pairs, 5166 based on Foata normal form. 68/16822 useless extension candidates. Maximal degree in co-relation 94525. Up to 15282 conditions per place. [2024-06-03 19:51:38,431 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 113 selfloop transitions, 124 changer transitions 0/244 dead transitions. [2024-06-03 19:51:38,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 244 transitions, 3192 flow [2024-06-03 19:51:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-03 19:51:38,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-03 19:51:38,432 INFO L175 Difference]: Start difference. First operand has 115 places, 198 transitions, 2382 flow. Second operand 7 states and 182 transitions. [2024-06-03 19:51:38,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 244 transitions, 3192 flow [2024-06-03 19:51:38,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 244 transitions, 2988 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:38,682 INFO L231 Difference]: Finished difference. Result has 118 places, 207 transitions, 2586 flow [2024-06-03 19:51:38,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2586, PETRI_PLACES=118, PETRI_TRANSITIONS=207} [2024-06-03 19:51:38,683 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2024-06-03 19:51:38,683 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 207 transitions, 2586 flow [2024-06-03 19:51:38,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:38,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:38,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:51:38,683 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:38,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash -799239303, now seen corresponding path program 1 times [2024-06-03 19:51:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:38,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940107876] [2024-06-03 19:51:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:39,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:39,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940107876] [2024-06-03 19:51:39,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940107876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:39,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:39,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:51:39,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568817043] [2024-06-03 19:51:39,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:51:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:39,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:51:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:51:39,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-03 19:51:39,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 207 transitions, 2586 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:39,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:39,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-03 19:51:39,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:41,504 INFO L124 PetriNetUnfolderBase]: 10739/15686 cut-off events. [2024-06-03 19:51:41,504 INFO L125 PetriNetUnfolderBase]: For 266673/266675 co-relation queries the response was YES. [2024-06-03 19:51:41,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86999 conditions, 15686 events. 10739/15686 cut-off events. For 266673/266675 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 93545 event pairs, 4440 based on Foata normal form. 4/15670 useless extension candidates. Maximal degree in co-relation 86950. Up to 14517 conditions per place. [2024-06-03 19:51:41,681 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 208 selfloop transitions, 14 changer transitions 0/230 dead transitions. [2024-06-03 19:51:41,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 230 transitions, 3130 flow [2024-06-03 19:51:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:51:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:51:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-03 19:51:41,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-03 19:51:41,683 INFO L175 Difference]: Start difference. First operand has 118 places, 207 transitions, 2586 flow. Second operand 6 states and 146 transitions. [2024-06-03 19:51:41,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 230 transitions, 3130 flow [2024-06-03 19:51:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 230 transitions, 2918 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:41,973 INFO L231 Difference]: Finished difference. Result has 120 places, 211 transitions, 2461 flow [2024-06-03 19:51:41,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2461, PETRI_PLACES=120, PETRI_TRANSITIONS=211} [2024-06-03 19:51:41,973 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2024-06-03 19:51:41,973 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 211 transitions, 2461 flow [2024-06-03 19:51:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:41,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:41,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:51:41,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:41,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1742206855, now seen corresponding path program 1 times [2024-06-03 19:51:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704829318] [2024-06-03 19:51:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704829318] [2024-06-03 19:51:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704829318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214334997] [2024-06-03 19:51:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:42,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:42,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:42,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 211 transitions, 2461 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:42,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:42,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:42,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:45,196 INFO L124 PetriNetUnfolderBase]: 12170/17127 cut-off events. [2024-06-03 19:51:45,196 INFO L125 PetriNetUnfolderBase]: For 329156/329194 co-relation queries the response was YES. [2024-06-03 19:51:45,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99020 conditions, 17127 events. 12170/17127 cut-off events. For 329156/329194 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 96763 event pairs, 3966 based on Foata normal form. 38/17141 useless extension candidates. Maximal degree in co-relation 98969. Up to 16039 conditions per place. [2024-06-03 19:51:45,355 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 209 selfloop transitions, 41 changer transitions 0/257 dead transitions. [2024-06-03 19:51:45,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 257 transitions, 3311 flow [2024-06-03 19:51:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-03 19:51:45,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-03 19:51:45,357 INFO L175 Difference]: Start difference. First operand has 120 places, 211 transitions, 2461 flow. Second operand 7 states and 180 transitions. [2024-06-03 19:51:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 257 transitions, 3311 flow [2024-06-03 19:51:45,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 257 transitions, 3254 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-03 19:51:45,605 INFO L231 Difference]: Finished difference. Result has 123 places, 217 transitions, 2622 flow [2024-06-03 19:51:45,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2622, PETRI_PLACES=123, PETRI_TRANSITIONS=217} [2024-06-03 19:51:45,605 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-06-03 19:51:45,606 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 217 transitions, 2622 flow [2024-06-03 19:51:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:45,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:45,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:45,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:51:45,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:45,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:45,607 INFO L85 PathProgramCache]: Analyzing trace with hash 549472531, now seen corresponding path program 2 times [2024-06-03 19:51:45,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:45,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962938046] [2024-06-03 19:51:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:46,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962938046] [2024-06-03 19:51:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962938046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:46,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:51:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164544927] [2024-06-03 19:51:46,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:46,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:51:46,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:51:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:51:46,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:46,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 217 transitions, 2622 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:46,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:46,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:46,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:48,639 INFO L124 PetriNetUnfolderBase]: 12155/17101 cut-off events. [2024-06-03 19:51:48,640 INFO L125 PetriNetUnfolderBase]: For 364506/364528 co-relation queries the response was YES. [2024-06-03 19:51:48,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101788 conditions, 17101 events. 12155/17101 cut-off events. For 364506/364528 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 96543 event pairs, 4726 based on Foata normal form. 22/17097 useless extension candidates. Maximal degree in co-relation 101736. Up to 16154 conditions per place. [2024-06-03 19:51:48,859 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 208 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-06-03 19:51:48,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 255 transitions, 3248 flow [2024-06-03 19:51:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:51:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:51:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-03 19:51:48,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-03 19:51:48,861 INFO L175 Difference]: Start difference. First operand has 123 places, 217 transitions, 2622 flow. Second operand 7 states and 177 transitions. [2024-06-03 19:51:48,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 255 transitions, 3248 flow [2024-06-03 19:51:49,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 3112 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-03 19:51:49,326 INFO L231 Difference]: Finished difference. Result has 127 places, 217 transitions, 2578 flow [2024-06-03 19:51:49,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2578, PETRI_PLACES=127, PETRI_TRANSITIONS=217} [2024-06-03 19:51:49,327 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 70 predicate places. [2024-06-03 19:51:49,327 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 217 transitions, 2578 flow [2024-06-03 19:51:49,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:49,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:49,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:49,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:51:49,327 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:49,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash 664948399, now seen corresponding path program 1 times [2024-06-03 19:51:49,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:49,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404817921] [2024-06-03 19:51:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:50,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404817921] [2024-06-03 19:51:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404817921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:50,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:51:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868947261] [2024-06-03 19:51:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:50,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:51:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:51:50,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:51:50,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:50,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 217 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:50,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:50,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:50,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:53,621 INFO L124 PetriNetUnfolderBase]: 12480/17511 cut-off events. [2024-06-03 19:51:53,621 INFO L125 PetriNetUnfolderBase]: For 405402/405424 co-relation queries the response was YES. [2024-06-03 19:51:53,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105545 conditions, 17511 events. 12480/17511 cut-off events. For 405402/405424 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 98974 event pairs, 4696 based on Foata normal form. 63/17528 useless extension candidates. Maximal degree in co-relation 105491. Up to 15366 conditions per place. [2024-06-03 19:51:53,826 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 135 selfloop transitions, 133 changer transitions 0/275 dead transitions. [2024-06-03 19:51:53,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 275 transitions, 3606 flow [2024-06-03 19:51:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:51:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:51:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-03 19:51:53,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-03 19:51:53,830 INFO L175 Difference]: Start difference. First operand has 127 places, 217 transitions, 2578 flow. Second operand 8 states and 218 transitions. [2024-06-03 19:51:53,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 275 transitions, 3606 flow [2024-06-03 19:51:54,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 275 transitions, 3514 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 19:51:54,323 INFO L231 Difference]: Finished difference. Result has 129 places, 221 transitions, 2850 flow [2024-06-03 19:51:54,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2850, PETRI_PLACES=129, PETRI_TRANSITIONS=221} [2024-06-03 19:51:54,324 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-03 19:51:54,324 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 221 transitions, 2850 flow [2024-06-03 19:51:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:54,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:54,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:54,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:51:54,324 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:54,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash 968856900, now seen corresponding path program 1 times [2024-06-03 19:51:54,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:54,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553558584] [2024-06-03 19:51:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:54,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:55,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553558584] [2024-06-03 19:51:55,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553558584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:55,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:55,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:51:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685352829] [2024-06-03 19:51:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:55,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:51:55,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:51:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:51:55,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:55,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 221 transitions, 2850 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:55,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:55,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:51:58,034 INFO L124 PetriNetUnfolderBase]: 12503/17539 cut-off events. [2024-06-03 19:51:58,035 INFO L125 PetriNetUnfolderBase]: For 434308/434324 co-relation queries the response was YES. [2024-06-03 19:51:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110566 conditions, 17539 events. 12503/17539 cut-off events. For 434308/434324 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 98717 event pairs, 4733 based on Foata normal form. 18/17529 useless extension candidates. Maximal degree in co-relation 110511. Up to 16855 conditions per place. [2024-06-03 19:51:58,188 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 221 selfloop transitions, 29 changer transitions 0/257 dead transitions. [2024-06-03 19:51:58,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 257 transitions, 3672 flow [2024-06-03 19:51:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:51:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:51:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-03 19:51:58,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-03 19:51:58,190 INFO L175 Difference]: Start difference. First operand has 129 places, 221 transitions, 2850 flow. Second operand 6 states and 150 transitions. [2024-06-03 19:51:58,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 257 transitions, 3672 flow [2024-06-03 19:51:58,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 257 transitions, 3350 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-03 19:51:58,617 INFO L231 Difference]: Finished difference. Result has 129 places, 228 transitions, 2736 flow [2024-06-03 19:51:58,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2736, PETRI_PLACES=129, PETRI_TRANSITIONS=228} [2024-06-03 19:51:58,618 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-03 19:51:58,618 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 228 transitions, 2736 flow [2024-06-03 19:51:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:58,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:51:58,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:51:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:51:58,619 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:51:58,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:51:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1203188753, now seen corresponding path program 2 times [2024-06-03 19:51:58,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:51:58,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291534130] [2024-06-03 19:51:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:51:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:51:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:51:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:51:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:51:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291534130] [2024-06-03 19:51:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291534130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:51:59,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:51:59,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:51:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577372708] [2024-06-03 19:51:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:51:59,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:51:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:51:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:51:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:51:59,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:51:59,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 228 transitions, 2736 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:51:59,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:51:59,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:51:59,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:52:02,765 INFO L124 PetriNetUnfolderBase]: 12574/17609 cut-off events. [2024-06-03 19:52:02,765 INFO L125 PetriNetUnfolderBase]: For 454121/454142 co-relation queries the response was YES. [2024-06-03 19:52:02,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109965 conditions, 17609 events. 12574/17609 cut-off events. For 454121/454142 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 98937 event pairs, 4735 based on Foata normal form. 20/17558 useless extension candidates. Maximal degree in co-relation 109909. Up to 15817 conditions per place. [2024-06-03 19:52:02,957 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 134 selfloop transitions, 140 changer transitions 0/281 dead transitions. [2024-06-03 19:52:02,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 281 transitions, 3792 flow [2024-06-03 19:52:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:52:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:52:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-03 19:52:02,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-03 19:52:02,959 INFO L175 Difference]: Start difference. First operand has 129 places, 228 transitions, 2736 flow. Second operand 8 states and 212 transitions. [2024-06-03 19:52:02,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 281 transitions, 3792 flow [2024-06-03 19:52:03,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 281 transitions, 3458 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-03 19:52:03,428 INFO L231 Difference]: Finished difference. Result has 131 places, 232 transitions, 2784 flow [2024-06-03 19:52:03,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2784, PETRI_PLACES=131, PETRI_TRANSITIONS=232} [2024-06-03 19:52:03,428 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2024-06-03 19:52:03,429 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 232 transitions, 2784 flow [2024-06-03 19:52:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:03,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:52:03,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:52:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:52:03,429 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:52:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:52:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 521413923, now seen corresponding path program 3 times [2024-06-03 19:52:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:52:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613590590] [2024-06-03 19:52:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:52:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:52:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:52:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:52:04,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:52:04,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613590590] [2024-06-03 19:52:04,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613590590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:52:04,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:52:04,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:52:04,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788300064] [2024-06-03 19:52:04,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:52:04,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:52:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:52:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:52:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:52:04,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:52:04,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 232 transitions, 2784 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:04,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:52:04,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:52:04,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:52:07,484 INFO L124 PetriNetUnfolderBase]: 12645/17732 cut-off events. [2024-06-03 19:52:07,484 INFO L125 PetriNetUnfolderBase]: For 496862/496891 co-relation queries the response was YES. [2024-06-03 19:52:07,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115019 conditions, 17732 events. 12645/17732 cut-off events. For 496862/496891 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 99903 event pairs, 4723 based on Foata normal form. 28/17683 useless extension candidates. Maximal degree in co-relation 114963. Up to 15922 conditions per place. [2024-06-03 19:52:07,694 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 129 selfloop transitions, 148 changer transitions 0/284 dead transitions. [2024-06-03 19:52:07,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 284 transitions, 3774 flow [2024-06-03 19:52:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:52:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:52:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-03 19:52:07,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-03 19:52:07,696 INFO L175 Difference]: Start difference. First operand has 131 places, 232 transitions, 2784 flow. Second operand 8 states and 211 transitions. [2024-06-03 19:52:07,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 284 transitions, 3774 flow [2024-06-03 19:52:08,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 284 transitions, 3426 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-03 19:52:08,106 INFO L231 Difference]: Finished difference. Result has 133 places, 236 transitions, 2842 flow [2024-06-03 19:52:08,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2842, PETRI_PLACES=133, PETRI_TRANSITIONS=236} [2024-06-03 19:52:08,107 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2024-06-03 19:52:08,107 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 236 transitions, 2842 flow [2024-06-03 19:52:08,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:08,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:52:08,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:52:08,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:52:08,108 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:52:08,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:52:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1439660783, now seen corresponding path program 4 times [2024-06-03 19:52:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:52:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581959224] [2024-06-03 19:52:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:52:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:52:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:52:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:52:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:52:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581959224] [2024-06-03 19:52:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581959224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:52:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:52:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:52:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134186045] [2024-06-03 19:52:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:52:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:52:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:52:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:52:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:52:09,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:52:09,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 236 transitions, 2842 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:09,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:52:09,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:52:09,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:52:12,204 INFO L124 PetriNetUnfolderBase]: 12665/17748 cut-off events. [2024-06-03 19:52:12,204 INFO L125 PetriNetUnfolderBase]: For 532881/532910 co-relation queries the response was YES. [2024-06-03 19:52:12,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118125 conditions, 17748 events. 12665/17748 cut-off events. For 532881/532910 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 99893 event pairs, 4283 based on Foata normal form. 28/17705 useless extension candidates. Maximal degree in co-relation 118068. Up to 15362 conditions per place. [2024-06-03 19:52:12,385 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 121 selfloop transitions, 163 changer transitions 0/291 dead transitions. [2024-06-03 19:52:12,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 291 transitions, 3870 flow [2024-06-03 19:52:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:52:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:52:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-03 19:52:12,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-03 19:52:12,387 INFO L175 Difference]: Start difference. First operand has 133 places, 236 transitions, 2842 flow. Second operand 8 states and 215 transitions. [2024-06-03 19:52:12,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 291 transitions, 3870 flow [2024-06-03 19:52:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 291 transitions, 3498 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-03 19:52:13,010 INFO L231 Difference]: Finished difference. Result has 135 places, 240 transitions, 2913 flow [2024-06-03 19:52:13,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2913, PETRI_PLACES=135, PETRI_TRANSITIONS=240} [2024-06-03 19:52:13,011 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 78 predicate places. [2024-06-03 19:52:13,011 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 240 transitions, 2913 flow [2024-06-03 19:52:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:13,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:52:13,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:52:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:52:13,012 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-03 19:52:13,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:52:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash 993373560, now seen corresponding path program 2 times [2024-06-03 19:52:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:52:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732729533] [2024-06-03 19:52:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:52:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:52:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:52:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:52:13,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:52:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732729533] [2024-06-03 19:52:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732729533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:52:13,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:52:13,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:52:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126906792] [2024-06-03 19:52:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:52:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:52:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:52:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:52:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:52:13,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-03 19:52:13,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 240 transitions, 2913 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:52:13,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:52:13,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-03 19:52:13,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand